Author: "Laurent Brochard" / Topic: medicine.medical_treatment - Searchworks@Jio Institute Digital Library Search Results

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1. Noninvasive respiratory support following extubation in critically ill adults: a systematic review and network meta-analysis

Author: Samir Jaber, Shannon M. Fernando, Robert A. Fowler, Daniel Brodie, Pierre Cardinal, Laveena Munshi, Margaret S. Herridge, Laurent Brochard, Eddy Fan, Deborah J. Cook, Andrew J.E. Seely, Behnam Sadeghirad, Alexandre Tran, Arthur S. Slutsky, Niall D. Ferguson, Morten Hylander Møller, Karen E. A. Burns, Arnaud W. Thille, Ewan C. Goligher, Bram Rochwerg, University of Ottawa [Ottawa], McMaster University [Hamilton, Ontario], University of Toronto, St. Michael's Hospital, Mount Sinai Health System, University Health Network, Columbia University College of Physicians and Surgeons, New York Presbyterian Hospital, Sunnybrook Health Sciences Centre, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University of Copenhagen = Københavns Universitet (KU), Centre hospitalier universitaire de Poitiers (CHU Poitiers), CIC - Poitiers, Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), Ottawa Hospital Research Institute [Ottawa] (OHRI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), University of Copenhagen = Københavns Universitet (UCPH), and MORNET, Dominique
Subjects: medicine.medical_specialty, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Critical Care and Intensive Care Medicine, medicine.disease_cause, law.invention, 03 medical and health sciences, Mechanical ventilation, 0302 clinical medicine, Randomized controlled trial, law, Oxygen therapy, Anesthesiology, medicine, Critical care medicine, 030212 general & internal medicine, Extubation failure, Critically ill, business.industry, Incidence (epidemiology), 3. Good health, [SDV] Life Sciences [q-bio], 030228 respiratory system, Meta-analysis, High-flow nasal cannula, Emergency medicine, business, Nasal cannula
Abstract: International audience; Purpose: Systematic review and network meta-analysis to investigate the efficacy of noninvasive respiratory strategies, including noninvasive positive pressure ventilation (NIPPV) and high-flow nasal cannula (HFNC), in reducing extubation failure among critically ill adults.Methods: We searched databases from inception through October 2021 for randomized controlled trials (RCTs) evaluating noninvasive respiratory support therapies (NIPPV, HFNC, conventional oxygen therapy, or a combination of these) following extubation in critically ill adults. Two reviewers performed screening, full text review, and extraction independently. The primary outcome of interest was reintubation. We used GRADE to rate the certainty of our findings.Results: We included 36 RCTs (6806 patients). Compared to conventional oxygen therapy, NIPPV (OR 0.65 [95% CI 0.52-0.82]) and HFNC (OR 0.63 [95% CI 0.45-0.87]) reduced reintubation (both moderate certainty). Sensitivity analyses showed that the magnitude of the effect was highest in patients with increased baseline risk of reintubation. As compared to HFNC, no difference in incidence of reintubation was seen with NIPPV (OR 1.04 [95% CI 0.78-1.38], low certainty). Compared to conventional oxygen therapy, neither NIPPV (OR 0.8 [95% CI 0.61-1.04], moderate certainty) or HFNC (OR 0.9 [95% CI 0.66-1.24], low certainty) reduced short-term mortality. Consistent findings were demonstrated across multiple subgroups, including high- and low-risk patients. These results were replicated when evaluating noninvasive strategies for prevention (prophylaxis), but not in rescue (application only after evidence of deterioration) situations.Conclusions: Our findings suggest that both NIPPV and HFNC reduced reintubation in critically ill adults, compared to conventional oxygen therapy. NIPPV did not reduce incidence of reintubation when compared to HFNC. These findings support the preventative application of noninvasive respiratory support strategies to mitigate extubation failure in critically ill adults, but not in rescue conditions.
Published: 2021

2. Longitudinal changes in compliance, oxygenation and ventilatory ratio in COVID-19 versus non-COVID-19 pulmonary acute respiratory distress syndrome

Author: Ferhat Meziani, Julien Demiselle, Nicolas Fage, Antoine Studer, Sibylle Cunat, Jean-Christophe Richard, Alain Mercat, François Beloncle, Satar Mortaza, Hamid Merdji, Laurent Brochard, Bertrand Pavlovsky, Christophe Desprez, Julie Helms, Valérie Seegers, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Strasbourg, Université de Strasbourg (UNISTRA), Integrated Center for Oncology [Angers] (ICO), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), LUNAM Université [Nantes Angers Le Mans], Regenerative NanoMedicine [Strasbourg] (RNM), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), Fédération de Médecine Translationnelle de Strasbourg (FMTS), St. Michael's Hospital, University of Toronto, RICHARD, Jean-Christophe, and Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC)
Subjects: Male, ARDS, Letter, Coronavirus disease 2019 (COVID-19), [SDV]Life Sciences [q-bio], medicine.medical_treatment, Respiratory mechanics, Respiratory failure, Critical Care and Intensive Care Medicine, Severity of Illness Index, Body Mass Index, Positive-Pressure Respiration, 03 medical and health sciences, Dead space, 0302 clinical medicine, Mechanical ventilation, Medicine, Humans, 030212 general & internal medicine, Respiratory system, Propensity Score, Acute Respiratory Distress Syndrome, Aged, Respiratory Distress Syndrome, Pulmonary Gas Exchange, business.industry, SARS-CoV-2, RC86-88.9, Research, Medical emergencies. Critical care. Intensive care. First aid, Oxygenation, Middle Aged, medicine.disease, Respiration, Artificial, Respiratory Function Tests, [SDV] Life Sciences [q-bio], Compliance (physiology), Clinical trial, Intensive Care Units, 030228 respiratory system, Anesthesia, Female, Blood Gas Analysis, business, Covid-19, Body mass index
Abstract: Background Differences in physiology of ARDS have been described between COVID-19 and non-COVID-19 patients. This study aimed to compare initial values and longitudinal changes in respiratory system compliance (CRS), oxygenation parameters and ventilatory ratio (VR) in patients with COVID-19 and non-COVID-19 pulmonary ARDS matched on oxygenation. Methods 135 patients with COVID-19 ARDS from two centers were included in a physiological study; 767 non-COVID-19 ARDS from a clinical trial were used for the purpose of at least 1:2 matching. A propensity-matching was based on age, severity score, oxygenation, positive end-expiratory pressure (PEEP) and pulmonary cause of ARDS and allowed to include 112 COVID-19 and 198 non-COVID pulmonary ARDS. Results The two groups were similar on initial oxygenation. COVID-19 patients had a higher body mass index, higher CRS at day 1 (median [IQR], 35 [28–44] vs 32 [26–38] ml cmH2O−1, p = 0.037). At day 1, CRS was correlated with oxygenation only in non-COVID-19 patients; 61.6% and 68.2% of COVID-19 and non-COVID-19 pulmonary ARDS were still ventilated at day 7 (p = 0.241). Oxygenation became lower in COVID-19 than in non-COVID-19 patients at days 3 and 7, while CRS became similar. VR was lower at day 1 in COVID-19 than in non-COVID-19 patients but increased from day 1 to 7 only in COVID-19 patients. VR was higher at days 1, 3 and 7 in the COVID-19 patients ventilated using heat and moisture exchangers compared to heated humidifiers. After adjustment on PaO2/FiO2, PEEP and humidification device, CRS and VR were found not different between COVID-19 and non-COVID-19 patients at day 7. Day-28 mortality did not differ between COVID-19 and non-COVID-19 patients (25.9% and 23.7%, respectively, p = 0.666). Conclusions For a similar initial oxygenation, COVID-19 ARDS initially differs from classical ARDS by a higher CRS, dissociated from oxygenation. CRS become similar for patients remaining on mechanical ventilation during the first week of evolution, but oxygenation becomes lower in COVID-19 patients. Trial registration: clinicaltrials.gov NCT04385004
Published: 2021

3. The Pressure Paradox: Abdominal Compression to Detect Lung Hyperinflation in COVID-19 Acute Respiratory Distress Syndrome

Author: Mufid Al Shalabi, Lu Chen, Dekel Stavi, Alberto Goffi, Robert W. Jackson, Thomas Piraino, and Laurent Brochard
Subjects: Decompression, Lung Diseases, Male, Pulmonary and Respiratory Medicine, 2019-20 coronavirus outbreak, medicine.medical_specialty, ARDS, Coronavirus disease 2019 (COVID-19), medicine.medical_treatment, Hyperinflation, Respiratory physiology, Critical Care and Intensive Care Medicine, Positive-Pressure Respiration, Internal medicine, medicine, Humans, Mechanical ventilation, Respiratory Distress Syndrome, Lung, SARS-CoV-2, business.industry, COVID-19, Abdominal compression, Middle Aged, Images in Pulmonary, Critical Care, Sleep Medicine and the Sciences, medicine.disease, Treatment Outcome, medicine.anatomical_structure, Cardiology, business
Published: 2022

4. Outcome of acute hypoxaemic respiratory failure: insights from the LUNG SAFE Study

Author: Pham, Tài, Pesenti, Antonio, Bellani, Giacomo, Rubenfeld, Gordon, Fan, Eddy, Bugedo, Guillermo, Lorente, José Angel, Fernandes, Antero do Vale, Van Haren, Frank, Bruhn, Alejandro, Rios, Fernando, Esteban, Andres, Gattinoni, Luciano, Larsson, Anders, McAuley, Daniel F., Ranieri, Marco, Thompson, B. Taylor, Wrigge, Hermann, Brochard, Laurent J., Laffey, John G, Antonio Pesenti, John G Laffey, Laurent Brochard, Andres Esteban, Luciano Gattinoni, Frank van Haren, Anders Larsson, Daniel F McAuley, Marco Ranieri, Gordon Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, Giacomo Bellani, Tài Pham, Eddy Fan, Fernando Rios, Thierry Sottiaux, Pieter Depuydt, Fredy S Lora, Luciano Cesar Azevedo, Guillermo Bugedo, Haibo Qiu, Marcos Gonzalez, Juan Silesky, Vladimir Cerny, Jonas Nielsen, Manuel Jibaja, Dimitrios Matamis, Jorge Luis Ranero, Pravin Amin, S M Hashemian, Kevin Clarkson, Kiyoyasu Kurahashi, Asisclo Villagomez, Amine Ali Zeggwagh, Leo M Heunks, Jon Henrik Laake, Jose Emmanuel Palo, Antero do Vale Fernandes, Dorel Sandesc, Yaasen Arabi, Vesna Bumbasierevic, Nicolas Nin, Jose A Lorente, Lise Piquilloud, Fekri Abroug, Lia McNamee, Javier Hurtado, Ed Bajwa, Gabriel Démpaire, Hektor Sula, Lordian Nunci, Alma Cani, Alan Zazu, Christian Dellera, Carolina S Insaurralde, Risso V Alejandro, Julio Daldin, Mauricio Vinzio, Ruben O Fernandez, Luis P Cardonnet, Lisandro R Bettini, Mariano Carboni Bisso, Emilio M Osman, Mariano G Setten, Pablo Lovazzano, Javier Alvarez, Veronica Villar, Norberto C Pozo, Nicolas Grubissich, Gustavo A Plotnikow, Daniela N Vasquez, Santiago Ilutovich, Norberto Tiribelli, Ariel Chena, Carlos A Pellegrini, María G Saenz, Elisa Estenssoro, Matias Brizuela, Hernan Gianinetto, Pablo E Gomez, Valeria I Cerrato, Marco G Bezzi, Silvina A Borello, Flavia A Loiacono, Adriana M Fernandez, Serena Knowles, Claire Reynolds, Deborah M Inskip, Jennene J Miller, Jing Kong, Christina Whitehead, Shailesh Bihari, Aylin Seven, Amanda Krstevski, Helen J Rodgers, Rebecca T Millar, Toni E McKenna, Irene M Bailey, Gabrielle C Hanlon, Anders Aneman, Joan M Lynch, Raman Azad, John Neal, Paul W Woods, Brigit L Roberts, Mark R Kol, Helen S Wong, Katharina C Riss, Thomas Staudinger, Xavier Wittebole, Caroline Berghe, Pierre A Bulpa, Alain M Dive, Rik Verstraete, Herve Lebbinck, Joris Vermassen, Philippe Meersseman, Helga Ceunen, Jonas I Rosa, Daniel O Beraldo, Claudio Piras, Adenilton M Rampinelli, Antonio P Nassar Jr, Sergio Mataloun, Marcelo Moock, Marlus M Thompson, Claudio H Gonçalves, Ana Carolina P Antônio, Aline Ascoli, Rodrigo S Biondi, Danielle C Fontenele, Danielle Nobrega, Vanessa M Sales, Ahmad Yazid Bin Hj Abul Wahab, Maizatul Ismail, Suresh Shindhe, John Laffey, Francois Beloncle, Kyle G Davies, Rob Cirone, Venika Manoharan, Mehvish Ismail, Ewan C Goligher, Mandeep Jassal, Erin Nishikawa, Areej Javeed, Gerard Curley, Nuttapol Rittayamai, Matteo Parotto, Niall D Ferguson, Sangeeta Mehta, Jenny Knoll, Antoine Pronovost, Sergio Canestrini, Alejandro R Bruhn, Patricio H Garcia, Felipe A Aliaga, Pamela A Farías, Jacob S Yumha, Claudia A Ortiz, Javier E Salas, Alejandro A Saez, Luis D Vega, Eduardo F Labarca, Felipe T Martinez, Nicolás G Carreño, Pilar Lora, Haitao Liu, Ling Liu, Rui Tang, Xiaoming Luo, Youzhong An, Huiying Zhao, Yan Gao, Zhe Zhai, Zheng L Ye, Wei Wang, Wenwen Li, Qingdong Li, Ruiqiang Zheng, Wenkui Yu, Juanhong Shen, Xinyu Li, Tao Yu, Weihua Lu, Ya Q Wu, Xiao B Huang, Zhenyang He, Yuanhua Lu, Hui Han, Fan Zhang, Renhua Sun, Hua X Wang, Shu H Qin, Bao H Zhu, Jun Zhao, Jian Liu, Bin Li, Jing L Liu, Fa C Zhou, Qiong J Li, Xing Y Zhang, Zhou Li-Xin, Qiang Xin-Hua, Liangyan Jiang, Yuan N Gao, Xian Y Zhao, Yuan Y Li, Xiao L Li, Chunting Wang, Qingchun Yao, Rongguo Yu, Kai Chen, Huanzhang Shao, Bingyu Qin, Qing Q Huang, Wei H Zhu, Ai Y Hang, Ma X Hua, Yimin Li, Yonghao Xu, Yu D Di, Long L Ling, Tie H Qin, Shou H Wang, Junping Qin, Yi Han, Suming Zhou, Monica P Vargas, Juan I Silesky Jimenez, Manuel A González Rojas, Jaime E SolisQuesada, Christian M Ramirez-Alfaro, Jan Máca, Peter Sklienka, Jakob Gjedsted, Aage Christiansen, Boris G Villamagua, Iguel Llano, Philippe Burtin, Gautier Buzancais, Pascal Beuret, Nicolas Pelletier, Satar Mortaza, Alain Mercat, Jonathan Chelly, Sébastien Jochmans, Nicolas Terzi, Cédric Daubin, Guillaume Carteaux, Nicolas de Prost, Jean-Daniel Chiche, Fabrice Daviaud, Muriel Fartoukh, Guillaume Barberet, Jerome Biehler, Jean Dellamonica, Denis Doyen, Jean-Michel Arnal, Anais Briquet, Sami Hraiech, Laurent Papazian, Arnaud Follin, Damien Roux, Jonathan Messika, Evangelos Kalaitzis, Laurence Dangers, Alain Combes, Siu-Ming Au, Gaetan Béduneau, Dorothée Carpentier, Elie H Zogheib, Herve Dupont, Sylvie Ricome, Francesco L Santoli, Sebastien L Besset, Philippe Michel, Bruno Gelée, Pierre-Eric Danin, Bernard Goubaux, Philippe J Crova, Nga T Phan, Frantz Berkelmans, Julio C Badie, Romain Tapponnier, Josette Gally, Samy Khebbeb, Jean-Etienne Herbrecht, Francis Schneider, PierreLouis M Declercq, Jean-Philippe Rigaud, Jacques Duranteau, Anatole Harrois, Russell Chabanne, Julien Marin, Charlene Bigot, Sandrine Thibault, Mohammed Ghazi, Messabi Boukhazna, Salem Ould Zein, Jack R Richecoeur, Daniele M Combaux, Fabien Grelon, Charlene Le Moal, Elise P Sauvadet, Adrien Robine, Virginie Lemiale, Danielle Reuter, Martin Dres, Alexandre Demoule, Dany Goldgran-Toledano, Loredana Baboi, Claude Guérin, Ralph Lohner, Jens Kraßler, Susanne Schäfer, Kai D Zacharowski, Patrick Meybohm, Andreas W Reske, Philipp Simon, HansBernd F Hopf, Michael Schuetz, Thomas Baltus, Metaxia N Papanikolaou, Theonymfi G Papavasilopoulou, Giannis A Zacharas, Vasilis Ourailogloy, Eleni K Mouloudi, Eleni V Massa, Eva O Nagy, Electra E Stamou, Ellada V Kiourtzieva, Marina A Oikonomou, Luis E Avila, Cesar A Cortez, Johanna E Citalán, Sameer A Jog, Safal D Sable, Bhagyesh Shah, Mohan Gurjar, Arvind K Baronia, Mohammedfaruk Memon, Radhakrishnan Muthuchellappan, Venkatapura J Ramesh, Anitha Shenoy, Ramesh Unnikrishnan, Subhal B Dixit, Rachana V Rhayakar, Nagarajan Ramakrishnan, Vallish K Bhardwaj, Heera L Mahto, Sudha V Sagar, Vijayanand Palaniswamy, Deeban Ganesan, Seyed Mohammadreza Hashemian, Hamidreza Jamaati, Farshad Heidari, Edel A Meaney, Alistair Nichol, Karl M Knapman, Donall O'Croinin, Eimhin S Dunne, Dorothy M Breen, Kevin P Clarkson, Rola F Jaafar, Rory Dwyer, Fahd Amir, Olaitan O Ajetunmobi, Aogan C O'Muircheartaigh, Colin S Black, Nuala Treanor, Daniel V Collins, Wahid Altaf, Gianluca Zani, Maurizio Fusari, Savino Spadaro, Carlo A Volta, Romano Graziani, Barbara Brunettini, Salvatore Palmese, Paolo Formenti, Michele Umbrello, Andrea Lombardo, Elisabetta Pecci, Marco Botteri, Monica Savioli, Alessandro Protti, Alessia Mattei, Lorenzo Schiavoni, Andrea Tinnirello, Manuel Todeschini, Antonino Giarratano, Andrea Cortegiani, Massimo M Antonelli, Luca M Montini, Paolo Casalena, Sergio Scafetti, Giovanna Panarello, Giovanna Occhipinti, Nicolò Patroniti, Matteo Pozzi, Roberto R Biscione, Michela M Poli, Ferdinando Raimondi, Daniela Albiero, Giulia Crapelli, Eduardo Beck, Vincenzo Pota, Vincenzo Schiavone, Alexandre Molin, Fabio Tarantino, Giacomo Monti, Elena Frati, Lucia Mirabella, Gilda Cinnella, Tommaso Fossali, Riccardo Colombo, Pierpaolo Terragni, Ilaria Pattarino, Francesco Mojoli, Antonio Braschi, Erika E Borotto, Andrea N Cracchiolo, Daniela M Palma, Francesco Raponi, Giuseppe Foti, Ettore R Vascotto, Andrea Coppadoro, Luca Brazzi, Leda Floris, Giorgio A Iotti, Aaron Venti, Osamu Yamaguchi, Shunsuke Takagi, Hiroki N Maeyama, Eizo Watanabe, Yoshihiro Yamaji, Kazuyoshi Shimizu, Kyoko Shiozaki, Satoru Futami, Sekine Ryosuke, Koji Saito, Yoshinobu Kameyama, Keiko Ueno, Masayo Izawa, Nao Okuda, Hiroyuki Suzuki, Tomofumi Harasawa, Michitaka Nasu, Tadaaki Takada, Fumihito Ito, Shin Nunomiya, Kansuke Koyama, Toshikazu Abe, Kohkichi Andoh, Kohei Kusumoto, Akira Hirata, Akihiro Takaba, Hiroyasu Kimura, Shuhei Matsumoto, Ushio Higashijima, Hiroyuki Honda, Nobumasa Aoki, Hiroshi Imai, Yasuaki Ogino, Ichiko Mizuguchi, Kazuya Ichikado, Kenichi Nitta, Katsunori Mochizuki, Tomoaki Hashida, Hiroyuki Tanaka, Tomoyuki Nakamura, Daisuke Niimi, Takeshi Ueda, Yozo Kashiwa, Akinori Uchiyama, Olegs Sabelnikovs, Peteris Oss, Youssef Haddad, Kong Y Liew, Silvio A Ñamendys-Silva, Yves D Jarquin-Badiola, Luis A Sanchez-Hurtado, Saira S Gomez-Flores, Maria C Marin, Asisclo J Villagomez, Jordana S Lemus, Jonathan M Fierro, Mavy Ramirez Cervantes, Francisco Javier Flores Mejia, Dulce Dector, Alejandro Rojas, Daniel R Gonzalez, Claudia R Estrella, Jorge R Sanchez-Medina, Alvaro Ramirez-Gutierrez, Fernando G George, Janet S Aguirre, Juan A Buensuseso, Manuel Poblano, Tarek Dendane, Hicham Balkhi, Mina Elkhayari, Nacer Samkaoui, Hanane Ezzouine, Abdellatif Benslama, Mourad Amor, Wajdi Maazouzi, Nedim Cimic, Oliver Beck, Monique M Bruns, Jeroen A Schouten, Myra Rinia, Monique Raaijmakers, Hellen M van Wezel, Serge J Heines, Ulrich Strauch, Marc P Buise, Fabienne D Simonis, Marcus J Schultz, Jennifer C Goodson, Troy S Browne, Leanlove Navarra, Anna Hunt, Robyn A Hutchison, Mathew B Bailey, Lynette Newby, Colin McArthur, Michael Kalkoff, Alex Mcleod, Jonathan Casement, Danielle J Hacking, Finn H Andersen, Merete S Dolva, Jon H Laake, Andreas Barratt-Due, Kim Andre L Noremark, Eldar Søreide, Brit Å Sjøbø, Anne B Guttormsen, Hector H Leon Yoshido, Ronald Zumaran Aguilar, Fredy A Montes Oscanoa, Alain U Alisasis, Joanne B Robles, Rossini Abbie B Pasanting-Lim, Beatriz C Tan, Pawel Andruszkiewicz, Karina Jakubowska, Cristina M Coxo, António M Alvarez, Bruno S Oliveira, Gustavo M Montanha, Nelson C Barros, Carlos S Pereira, António M Messias, Jorge M Monteiro, Ana M Araujo, Nuno T Catorze, Susan M Marum, Maria J Bouw, Rui M Gomes, Vania A Brito, Silvia Castro, Joana M Estilita, Filipa M Barros, Isabel M Serra, Aurelia M Martinho, Dana R Tomescu, Alexandra Marcu, Ovidiu H Bedreag, Marius Papurica, Dan E Corneci, Silvius Ioan Negoita, Evgeny Grigoriev, Alexey I Gritsan, Andrey A Gazenkampf, Ghaleb Almekhlafi, Mohamad M Albarrak, Ghanem M Mustafa, Khalid A Maghrabi, Nawal Salahuddin, Tharwat M Aisa, Ahmed S Al Jabbary, Edgardo Tabhan, Yaseen M Arabi, Olivia A Trinidad, Hasan M Al Dorzi, Edgardo E Tabhan, Vesna Bumbasirevic, Bojan Jovanovic, Stefan Bolon, Oliver Smith, Jordi Mancebo, Hernan Aguirre-Bermeo, Juan C Lopez-Delgado, Francisco Esteve, Gemma Rialp, Catalina Forteza, Candelaria De Haro, Antonio Artigas, Guillermo M Albaiceta, Sara De Cima-Iglesias, Leticia Seoane-Quiroga, Alexandra Ceniceros-Barros, Antonio L RuizAguilar, Luis M Claraco-Vega, Juan Alfonso Soler, Maria Del Carmen Lorente, Cecilia Hermosa, Federico Gordo, Miryam PrietoGonzález, Juan B López-Messa, Manuel P Perez, Cesar P Perez, Raquel Montoiro Allue, Ferran RocheCampo, Marcos Ibañez-Santacruz, Susana TempranoSusana, Maria C Pintado, Raul De Pablo, Pilar Ricart Aroa Gómez, Silvia Rodriguez Ruiz, Silvia Iglesias Moles, Mª Teresa Jurado, Alfons Arizmendi, Enrique A Piacentini, Nieves Franco, Teresa Honrubia, Meisy Perez Cheng, Elena Perez Losada, Javier Blanco, Luis J Yuste, Cecilia Carbayo-Gorriz, Francisca G Cazorla-Barranquero, Javier G Alonso, Rosa S Alda, Ángela Algaba, Gonzalo Navarro, Enrique Cereijo, Esther Diaz-Rodriguez, Diego Pastor Marcos, Laura Alvarez Montero, Luis Herrera Para, Roberto Jimenez Sanchez, Miguel Angel Blasco Navalpotro, Ricardo Diaz Abad, Raquel Montiel González, Dácil Parrilla Toribio, Alejandro G Castro, Maria Jose D Artiga, Oscar Penuelas, Tomas P Roser, Moreno F Olga, Elena Gallego Curto, Rocío Manzano Sánchez, Vallverdu P Imma, Garcia M Elisabet, Laura Claverias, Monica Magret, Ana M Pellicer, Lucia L Rodriguez, Jesús Sánchez-Ballesteros, Ángela González-Salamanca, Antonio G Jimenez, Francisco P Huerta, Juan Carlos J Sotillo Diaz, Esther Bermejo Lopez, David D Llinares Moya, Alec A Tallet Alfonso, Palazon Sanchez Eugenio Luis, Palazon Sanchez Cesar, Sánchez I Rafael, Corcoles G Virgilio, Noelia N Recio, Christian C Rylander, Bernhard Holzgraefe, Lars M Broman, Joanna Wessbergh, Linnea Persson, Fredrik Schiöler, Hans Kedelv, Anna Oscarsson Tibblin, Henrik Appelberg, Lars Hedlund, Johan Helleberg, Karin E Eriksson, Rita Glietsch, Niklas Larsson, Ingela Nygren, Silvia L Nunes, Anna-Karin Morin, Thomas Kander, Anne Adolfsson, Hervé O Zender, Corinne Leemann-Refondini, Souheil Elatrous, Slaheddine Bouchoucha, Imed Chouchene, Islem Ouanes, Asma Ben Souissi, Salma Kamoun, Oktay Demirkiran, Mustafa Aker, Emre Erbabacan, Ilkay Ceylan, Nermin Kelebek Girgin, Menekse Ozcelik, Necmettin Ünal, Basak Ceyda Meco, Onat O Akyol, Suleyman S Derman, Barry Kennedy, Ken Parhar, Latha Srinivasa, Danny McAuley, Phil Hopkins, Clare Mellis, Vivek Kakar, Dan Hadfield, Andre Vercueil, Kaushik Bhowmick, Sally K Humphreys, Andrew Ferguson, Raymond Mckee, Ashok S Raj, Danielle A Fawkes, Philip Watt, Linda Twohey, Rajeev R Jha, Matthew Thomas, Alex Morton, Varsha Kadaba, Mark J Smith, Anil P Hormis, Santhana G Kannan, Miriam Namih, Henrik Reschreiter, Julie Camsooksai, Alek Kumar, Szabolcs Rugonfalvi, Christopher Nutt, Orla Oneill, Colette Seasman, Ged Dempsey, Christopher J Scott, Helen E Ellis, Stuart Mckechnie, Paula J Hutton, Nora N Di Tomasso, Michela N Vitale, Ruth O Griffin, Michael N Dean, Julius H Cranshaw, Emma L Willett, Nicholas Ioannou, Sarah Gillis, Peter Csabi, Rosaleen Macfadyen, Heidi Dawson, Pieter D Preez, Alexandra J Williams, Owen Boyd, Laura Ortiz-Ruiz de Gordoa, Jon Bramall, Sophie Symmonds, Simon K Chau, Tim Wenham, Tamas Szakmany, Piroska Toth-Tarsoly, Katie H McCalman, Peter Alexander, Lorraine Stephenson, Thomas Collyer, Rhiannon Chapman, Raphael Cooper, Russell M Allan, Malcolm Sim, David W Wrathall, Donald A Irvine, Kim S Zantua, John C Adams, Andrew J Burtenshaw, Gareth P Sellors, Ingeborg D Welters, Karen E Williams, Robert J Hessell, Matthew G Oldroyd, Ceri E Battle, Suresh Pillai, Istvan Kajtor, Mageswaran Sivashanmugavel, Sinead C Okane, Adrian Donnelly, Aniko D Frigyik, Jon P Careless, Martin M May, Richard Stewart, T John Trinder, Samantha J Hagan, Jade M Cole, Caroline C MacFie, Anna T Dowling, Nicolás Nin, Edgardo Nuñez, Gustavo Pittini, Ruben Rodriguez, María C Imperio, Cristina Santos, Ana G França, Alejandro Ebeid, Alberto Deicas, Carolina Serra, Aditya Uppalapati, Ghassan Kamel, Valerie M Banner-Goodspeed, Jeremy R Beitler, Satyanarayana Reddy Mukkera, Shreedhar Kulkarni, John O Shinn Iii, Dina Gomaa, Christopher Tainter, Jarone Lee, Tomaz MesarJarone Lee, Dale J Yeatts, Jessica Warren, Michael J Lanspa, Russel R Miller, Colin K Grissom, Samuel M Brown, Philippe R Bauer, Ryan J Gosselin, Barrett T Kitch, Jason E Cohen, Scott H Beegle, Shazia Choudry, Renaud M Gueret, Aiman Tulaimat, William Stigler, Hitesh Batra, Nidhi G Huff, Keith D Lamb, Trevor W Oetting, Nicholas M Mohr, Claine Judy, Shigeki Saito, Fayez M Kheir, Fayez Kheir, Adam B Schlichting, Angela Delsing, Daniel R Crouch, Mary Elmasri, Dina Ismail, Kyle R Dreyer, Thomas C Blakeman, Rebecca M Baro, Carolina Quintana Grijalba, Peter C Hou, Raghu Seethala, Imo Aisiku, Galen Henderson, Gyorgy Frendl, Sen-Kuang Hou, Robert L Owens, Ashley Schomer, Pham, Tài, Pesenti, Antonio, Bellani, Giacomo, Rubenfeld, Gordon, Fan, Eddy, Bugedo, Guillermo, Lorente, José Angel, Fernandes, Antero do Vale, Van Haren, Frank, Bruhn, Alejandro, Rios, Fernando, Esteban, Andre, Gattinoni, Luciano, Larsson, Ander, McAuley, Daniel F., Ranieri, Marco, Thompson, B. Taylor, Wrigge, Hermann, Brochard, Laurent J., Laffey, John G, Antonio Pesenti, John G Laffey, Laurent Brochard, Andres Esteban, Luciano Gattinoni, Frank van Haren, Anders Larsson, Daniel F McAuley, Marco Ranieri, Gordon Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, John G Laffey, Giacomo Bellani, Tài Pham, Eddy Fan, Fernando Rios, Frank van Haren, Thierry Sottiaux, Pieter Depuydt, Fredy S Lora, Luciano Cesar Azevedo, Eddy Fan, Guillermo Bugedo, Haibo Qiu, Marcos Gonzalez, Juan Silesky, Vladimir Cerny, Jonas Nielsen, Manuel Jibaja, Tài Pham, Hermann Wrigge, Dimitrios Matamis, Jorge Luis Ranero, Pravin Amin, S M Hashemian, Kevin Clarkson, Giacomo Bellani, Kiyoyasu Kurahashi, Asisclo Villagomez, Amine Ali Zeggwagh, Leo M Heunks, Jon Henrik Laake, Jose Emmanuel Palo, Antero do Vale Fernandes, Dorel Sandesc, Yaasen Arabi, Vesna Bumbasierevic, Nicolas Nin, Jose A Lorente, Anders Larsson, Lise Piquilloud, Fekri Abroug, Daniel F McAuley, Lia McNamee, Javier Hurtado, Ed Bajwa, Gabriel Démpaire, Hektor Sula, Lordian Nunci, Alma Cani, Alan Zazu, Christian Dellera, Carolina S Insaurralde, Risso V Alejandro, Julio Daldin, Mauricio Vinzio, Ruben O Fernandez, Luis P Cardonnet, Lisandro R Bettini, Mariano Carboni Bisso, Emilio M Osman, Mariano G Setten, Pablo Lovazzano, Javier Alvarez, Veronica Villar, Norberto C Pozo, Nicolas Grubissich, Gustavo A Plotnikow, Daniela N Vasquez, Santiago Ilutovich, Norberto Tiribelli, Ariel Chena, Carlos A Pellegrini, María G Saenz, Elisa Estenssoro, Matias Brizuela, Hernan Gianinetto, Pablo E Gomez, Valeria I Cerrato, Marco G Bezzi, Silvina A Borello, Flavia A Loiacono, Adriana M Fernandez, Serena Knowles, Claire Reynolds, Deborah M Inskip, Jennene J Miller, Jing Kong, Christina Whitehead, Shailesh Bihari, Aylin Seven, Amanda Krstevski, Helen J Rodgers, Rebecca T Millar, Toni E McKenna, Irene M Bailey, Gabrielle C Hanlon, Anders Aneman, Joan M Lynch, Raman Azad, John Neal, Paul W Woods, Brigit L Roberts, Mark R Kol, Helen S Wong, Katharina C Riss, Thomas Staudinger, Xavier Wittebole, Caroline Berghe, Pierre A Bulpa, Alain M Dive, Rik Verstraete, Herve Lebbinck, Pieter Depuydt, Joris Vermassen, Philippe Meersseman, Helga Ceunen, Jonas I Rosa, Daniel O Beraldo, Claudio Piras, Adenilton M Rampinelli, Antonio P Nassar Jr, Sergio Mataloun, Marcelo Moock, Marlus M Thompson, Claudio H Gonçalves, Ana Carolina P Antônio, Aline Ascoli, Rodrigo S Biondi, Danielle C Fontenele, Danielle Nobrega, Vanessa M Sales, Ahmad Yazid Bin Hj Abul Wahab, Maizatul Ismail, Suresh Shindhe, John Laffey, Francois Beloncle, Kyle G Davies, Rob Cirone, Venika Manoharan, Mehvish Ismail, Ewan C Goligher, Mandeep Jassal, Erin Nishikawa, Areej Javeed, Gerard Curley, Nuttapol Rittayamai, Matteo Parotto, Niall D Ferguson, Sangeeta Mehta, Jenny Knoll, Antoine Pronovost, Sergio Canestrini, Alejandro R Bruhn, Patricio H Garcia, Felipe A Aliaga, Pamela A Farías, Jacob S Yumha, Claudia A Ortiz, Javier E Salas, Alejandro A Saez, Luis D Vega, Eduardo F Labarca, Felipe T Martinez, Nicolás G Carreño, Pilar Lora, Haitao Liu, Haibo Qiu, Ling Liu, Rui Tang, Xiaoming Luo, Youzhong An, Huiying Zhao, Yan Gao, Zhe Zhai, Zheng L Ye, Wei Wang, Wenwen Li, Qingdong Li, Ruiqiang Zheng, Wenkui Yu, Juanhong Shen, Xinyu Li, Tao Yu, Weihua Lu, Ya Q Wu, Xiao B Huang, Zhenyang He, Yuanhua Lu, Hui Han, Fan Zhang, Renhua Sun, Hua X Wang, Shu H Qin, Bao H Zhu, Jun Zhao, Jian Liu, Bin Li, Jing L Liu, Fa C Zhou, Qiong J Li, Xing Y Zhang, Zhou Li-Xin, Qiang Xin-Hua, Liangyan Jiang, Yuan N Gao, Xian Y Zhao, Yuan Y Li, Xiao L Li, Chunting Wang, Qingchun Yao, Rongguo Yu, Kai Chen, Huanzhang Shao, Bingyu Qin, Qing Q Huang, Wei H Zhu, Ai Y Hang, Ma X Hua, Yimin Li, Yonghao Xu, Yu D Di, Long L Ling, Tie H Qin, Shou H Wang, Junping Qin, Yi Han, Suming Zhou, Monica P Vargas, Juan I Silesky Jimenez, Manuel A González Rojas, Jaime E SolisQuesada, Christian M Ramirez-Alfaro, Jan Máca, Peter Sklienka, Jakob Gjedsted, Aage Christiansen, Jonas Nielsen, Boris G 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Jennifer C Goodson, Troy S Browne, Leanlove Navarra, Anna Hunt, Robyn A Hutchison, Mathew B Bailey, Lynette Newby, Colin McArthur, Michael Kalkoff, Alex Mcleod, Jonathan Casement, Danielle J Hacking, Finn H Andersen, Merete S Dolva, Jon H Laake, Andreas Barratt-Due, Kim Andre L Noremark, Eldar Søreide, Brit Å Sjøbø, Anne B Guttormsen, Hector H Leon Yoshido, Ronald Zumaran Aguilar, Fredy A Montes Oscanoa, Alain U Alisasis, Joanne B Robles, Rossini Abbie B Pasanting-Lim, Beatriz C Tan, Pawel Andruszkiewicz, Karina Jakubowska, Cristina M Coxo, António M Alvarez, Bruno S Oliveira, Gustavo M Montanha, Nelson C Barros, Carlos S Pereira, António M Messias, Jorge M Monteiro, Ana M Araujo, Nuno T Catorze, Susan M Marum, Maria J Bouw, Rui M Gomes, Vania A Brito, Silvia Castro, Joana M Estilita, Filipa M Barros, Isabel M Serra, Aurelia M Martinho, Dana R Tomescu, Alexandra Marcu, Ovidiu H Bedreag, Marius Papurica, Dan E Corneci, Silvius Ioan Negoita, Evgeny Grigoriev, Alexey I Gritsan, Andrey A Gazenkampf, Ghaleb Almekhlafi, Mohamad M Albarrak, Ghanem M Mustafa, Khalid A Maghrabi, Nawal Salahuddin, Tharwat M Aisa, Ahmed S Al Jabbary, Edgardo Tabhan, Yaseen M Arabi, Yaseen M Arabi, Olivia A Trinidad, Hasan M Al Dorzi, Edgardo E Tabhan, Vesna Bumbasirevic, Bojan Jovanovic, Stefan Bolon, Oliver Smith, Jordi Mancebo, Hernan Aguirre-Bermeo, Juan C Lopez-Delgado, Francisco Esteve, Gemma Rialp, Catalina Forteza, Candelaria De Haro, Antonio Artigas, Guillermo M Albaiceta, Sara De Cima-Iglesias, Leticia Seoane-Quiroga, Alexandra Ceniceros-Barros, Antonio L RuizAguilar, Luis M Claraco-Vega, Juan Alfonso Soler, Maria Del Carmen Lorente, Cecilia Hermosa, Federico Gordo, Miryam PrietoGonzález, Juan B López-Messa, Manuel P Perez, Cesar P Perez, Raquel Montoiro Allue, Ferran RocheCampo, Marcos Ibañez-Santacruz, Susana TempranoSusana, Maria C Pintado, Raul De Pablo, Pilar Ricart Aroa Gómez, Silvia Rodriguez Ruiz, Silvia Iglesias Moles, Mª Teresa Jurado, Alfons Arizmendi, Enrique A Piacentini, Nieves Franco, Teresa Honrubia, Meisy Perez Cheng, Elena Perez Losada, Javier Blanco, Luis J Yuste, Cecilia Carbayo-Gorriz, Francisca G Cazorla-Barranquero, Javier G Alonso, Rosa S Alda, Ángela Algaba, Gonzalo Navarro, Enrique Cereijo, Esther Diaz-Rodriguez, Diego Pastor Marcos, Laura Alvarez Montero, Luis Herrera Para, Roberto Jimenez Sanchez, Miguel Angel Blasco Navalpotro, Ricardo Diaz Abad, Raquel Montiel González, Dácil Parrilla Toribio, Alejandro G Castro, Maria Jose D Artiga, Oscar Penuelas, Tomas P Roser, Moreno F Olga, Elena Gallego Curto, Rocío Manzano Sánchez, Vallverdu P Imma, Garcia M Elisabet, Laura Claverias, Monica Magret, Ana M Pellicer, Lucia L Rodriguez, Jesús Sánchez-Ballesteros, Ángela González-Salamanca, Antonio G Jimenez, Francisco P Huerta, Juan Carlos J Sotillo Diaz, Esther Bermejo Lopez, David D Llinares Moya, Alec A Tallet Alfonso, Palazon Sanchez Eugenio Luis, Palazon Sanchez Cesar, Sánchez I Rafael, Corcoles G Virgilio, Noelia N Recio, Christian C Rylander, Bernhard Holzgraefe, Lars M Broman, Joanna Wessbergh, Linnea Persson, Fredrik Schiöler, Hans Kedelv, Anna Oscarsson Tibblin, Henrik Appelberg, Lars Hedlund, Johan Helleberg, Karin E Eriksson, Rita Glietsch, Niklas Larsson, Ingela Nygren, Silvia L Nunes, Anna-Karin Morin, Thomas Kander, Anne Adolfsson, Lise Piquilloud, Hervé O Zender, Corinne Leemann-Refondini, Souheil Elatrous, Slaheddine Bouchoucha, Imed Chouchene, Islem Ouanes, Asma Ben Souissi, Salma Kamoun, Oktay Demirkiran, Mustafa Aker, Emre Erbabacan, Ilkay Ceylan, Nermin Kelebek Girgin, Menekse Ozcelik, Necmettin Ünal, Basak Ceyda Meco, Onat O Akyol, Suleyman S Derman, Barry Kennedy, Ken Parhar, Latha Srinivasa, Lia McNamee, Danny McAuley, Phil Hopkins, Clare Mellis, Vivek Kakar, Dan Hadfield, Andre Vercueil, Kaushik Bhowmick, Sally K Humphreys, Andrew Ferguson, Raymond Mckee, Ashok S Raj, Danielle A Fawkes, Philip Watt, Linda Twohey, Rajeev R Jha, Matthew Thomas, Alex Morton, Varsha Kadaba, Mark J Smith, Anil P Hormis, Santhana G Kannan, Miriam Namih, Henrik Reschreiter, Julie Camsooksai, Alek Kumar, Szabolcs Rugonfalvi, Christopher Nutt, Orla Oneill, Colette Seasman, Ged Dempsey, Christopher J Scott, Helen E Ellis, Stuart Mckechnie, Paula J Hutton, Nora N Di Tomasso, Michela N Vitale, Ruth O Griffin, Michael N Dean, Julius H Cranshaw, Emma L Willett, Nicholas Ioannou, Sarah Gillis, Peter Csabi, Rosaleen Macfadyen, Heidi Dawson, Pieter D Preez, Alexandra J Williams, Owen Boyd, Laura Ortiz-Ruiz de Gordoa, Jon Bramall, Sophie Symmonds, Simon K Chau, Tim Wenham, Tamas Szakmany, Piroska Toth-Tarsoly, Katie H McCalman, Peter Alexander, Lorraine Stephenson, Thomas Collyer, Rhiannon Chapman, Raphael Cooper, Russell M Allan, Malcolm Sim, David W Wrathall, Donald A Irvine, Kim S Zantua, John C Adams, Andrew J Burtenshaw, Gareth P Sellors, Ingeborg D Welters, Karen E Williams, Robert J Hessell, Matthew G Oldroyd, Ceri E Battle, Suresh Pillai, Istvan Kajtor, Mageswaran Sivashanmugavel, Sinead C Okane, Adrian Donnelly, Aniko D Frigyik, Jon P Careless, Martin M May, Richard Stewart, T John Trinder, Samantha J Hagan, Jade M Cole, Caroline C MacFie, Anna T Dowling, Javier Hurtado, Nicolás Nin, Javier Hurtado, Edgardo Nuñez, Gustavo Pittini, Ruben Rodriguez, María C Imperio, Cristina Santos, Ana G França, Alejandro Ebeid, Alberto Deicas, Carolina Serra, Aditya Uppalapati, Ghassan Kamel, Valerie M Banner-Goodspeed, Jeremy R Beitler, Satyanarayana Reddy Mukkera, Shreedhar Kulkarni, John O Shinn Iii, Dina Gomaa, Christopher Tainter, Jarone Lee, Tomaz MesarJarone Lee, Dale J Yeatts, Jessica Warren, Michael J Lanspa, Russel R Miller, Colin K Grissom, Samuel M Brown, Philippe R Bauer, Ryan J Gosselin, Barrett T Kitch, Jason E Cohen, Scott H Beegle, Shazia Choudry, Renaud M Gueret, Aiman Tulaimat, William Stigler, Hitesh Batra, Nidhi G Huff, Keith D Lamb, Trevor W Oetting, Nicholas M Mohr, Claine Judy, Shigeki Saito, Fayez M Kheir, Fayez Kheir, Adam B Schlichting, Angela Delsing, Daniel R Crouch, Mary Elmasri, Daniel R Crouch, Dina Ismail, Kyle R Dreyer, Thomas C Blakeman, Dina Gomaa, Rebecca M Baro, Carolina Quintana Grijalba, Peter C Hou, Raghu Seethala, Imo Aisiku, Galen Henderson, Gyorgy Frendl, Sen-Kuang Hou, Robert L Owens, Ashley Schomer, Intensive Care Medicine, ACS - Diabetes & metabolism, ACS - Pulmonary hypertension & thrombosis, ACS - Microcirculation, Pham, T, Pesenti, A, Bellani, G, Rubenfeld, G, Fan, E, Bugedo, G, Lorente, J, Fernandes, A, Van Haren, F, Bruhn, A, Rios, F, Esteban, A, Gattinoni, L, Larsson, A, Mcauley, D, Ranieri, M, Thompson, B, Wrigge, H, Brochard, L, Laffey, J, AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), St. Michael's Hospital, University of Toronto, Groupe de recherche clinique CARMAS, Centre de recherche en épidémiologie et santé des populations (CESP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Paul Brousse-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Saclay, Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Università degli Studi di Milano [Milano] (UNIMI), University of Milan, San Gerardo Hospital, Sunnybrook Health Sciences Center, Mount Sinai Hospital [Toronto, Canada] (MSH), Pontificia Universidad Católica de Chile (UC), University Hospital of Getafe, CIBER Enfermedades Respiratorias (CIBERES), Universidad Europea de Madrid, Hospital Garcia de Orta (EPE), Canberra Hospital, Medical School [Australian National University - ANU], Australian National University (ANU), University of Canberra, Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), University of Göttingen - Georg-August-Universität Göttingen, Uppsala University, Queen's University [Belfast] (QUB), Royal Victoria Hospital, McGill University Health Center [Montreal] (MUHC), Università degli Studi di Bologna, Massachusetts General Hospital [Boston], University Hospital Leipzig, Department of Anaesthesiology, Intensive Care and Emergency Medicine, Pain Therapy, Bergmannstrost Hospital Halle, 06112, Halle, National University of Ireland [Galway] (NUI Galway), Bayer GlaxoSmithKline, GSK Baxter International Boehringer Ingelheim Wellcome Trust, WT National Institute for Health Research, NIHR Queen's University Belfast, QUB Medical Research Council Canada, MRC European Society of Intensive Care Medicine, ESICM, Support statement: This work was supported by the European Society of Intensive Care Medicine. Funding information for this article has been deposited with the Crossref Funder Registry., Conflict of interest: T. Pham has nothing to disclose. A. Pesenti reports personal fees from Maquet, Novalung/Xenios, Baxter, Gilead and Boehringer Ingelheim, outside the submitted work. G. Bellani reports grants and personal fees from Draeger Medical, personal fees from Getinge, Hamilton, GE Healthcare, Dimar SRL, Intersurgical and Flowmeter SPA, outside the submitted work. G. Rubenfeld has nothing to disclose. E. Fan reports personal fees from ALung Technologies, Getinge and MC3 Cardiopulmonary, grants, personal fees and non-financial support from Fresenius Medical Care, outside the submitted work. G. Bugedo has nothing to disclose. J.A. Lorente has nothing to disclose. A.D. V. Fernandes has nothing to disclose. F. Van Haren has nothing to disclose. A. Bruhn has nothing to disclose. F. Rios has nothing to disclose. A. Esteban has nothing to disclose. L. Gattinoni has nothing to disclose. A. Larsson reports grants from the Swedish Heart and Lung Foundation, during the conduct of the study. D.F. McAuley reports personal fees from consultancy for GlaxoSmithKline, Boehringer Ingelheim and Bayer, outside the submitted work, in addition, his institution has received funds from grants from the UK NIHR, Wellcome Trust, Innovate UK, NI HSC R&D Division, NI Chest Heart and Stroke, and MRC, is one of four named inventors on a patent US8962032 covering the use of sialic acid-bearing nanoparticles as anti-inflammatory agents issued to his institution, The Queen’s University of Belfast (http://www.google.com/patents/US8962032), and is a Director of Research for the Intensive Care Society and NIHR EME Programme Director. M. Ranieri has nothing to disclose. B.T. Thompson reports personal fees from Bayer, Thetis and Novartis, outside the submitted work. H. Wrigge reports personal fees for consultancy from Dräger Medical, personal fees for advisory board work from Liberate Medical, grants and personal fees for lectures from InfectoPharm, personal fees for lectures from MSD and GE, outside the submitted work. L.J. Brochard reports grants from Medtronic Covidien, grants and non-financial support from Fisher Paykel, non-financial support from Air Liquide, Sentec and Philips, other (patent) from General Electric, outside the submitted work. J.G. Laffey reports grants and personal fees from Baxter, grants and non-financial support from Aerogen and Factor Biosciences, outside the submitted work., LUNG SAFE Investigators and the European Society of Intensive Care Medicine Trials Group: Antonio Pesenti, John G Laffey, Laurent Brochard, Andres Esteban, Luciano Gattinoni, Frank van Haren, Anders Larsson, Daniel F McAuley, Marco Ranieri, Gordon Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, John G Laffey, Giacomo Bellani, Tài Pham, Eddy Fan, Fernando Rios, Frank van Haren, Thierry Sottiaux, Pieter Depuydt, Fredy S Lora, Luciano Cesar Azevedo, Eddy Fan, Guillermo Bugedo, Haibo Qiu, Marcos Gonzalez, Juan Silesky, Vladimir Cerny, Jonas Nielsen, Manuel Jibaja, Tài Pham, Hermann Wrigge, Dimitrios Matamis, Jorge Luis Ranero, Pravin Amin, S M Hashemian, Kevin Clarkson, Giacomo Bellani, Kiyoyasu Kurahashi, Asisclo Villagomez, Amine Ali Zeggwagh, Leo M Heunks, Jon Henrik Laake, Jose Emmanuel Palo, Antero do Vale Fernandes, Dorel Sandesc, Yaasen Arabi, Vesna Bumbasierevic, Nicolas Nin, Jose A Lorente, Anders Larsson, Lise Piquilloud, Fekri Abroug, Daniel F McAuley, Lia McNamee, Javier Hurtado, Ed Bajwa, Gabriel Démpaire, Hektor Sula, Lordian Nunci, Alma Cani, Alan Zazu, Christian Dellera, Carolina S Insaurralde, Risso V Alejandro, Julio Daldin, Mauricio Vinzio, Ruben O Fernandez, Luis P Cardonnet, Lisandro R Bettini, Mariano Carboni Bisso, Emilio M Osman, Mariano G Setten, Pablo Lovazzano, Javier Alvarez, Veronica Villar, Norberto C Pozo, Nicolas Grubissich, Gustavo A Plotnikow, Daniela N Vasquez, Santiago Ilutovich, Norberto Tiribelli, Ariel Chena, Carlos A Pellegrini, María G Saenz, Elisa Estenssoro, Matias Brizuela, Hernan Gianinetto, Pablo E Gomez, Valeria I Cerrato, Marco G Bezzi, Silvina A Borello, Flavia A Loiacono, Adriana M Fernandez, Serena Knowles, Claire Reynolds, Deborah M Inskip, Jennene J Miller, Jing Kong, Christina Whitehead, Shailesh Bihari, Aylin Seven, Amanda Krstevski, Helen J Rodgers, Rebecca T Millar, Toni E McKenna, Irene M Bailey, Gabrielle C Hanlon, Anders Aneman, Joan M Lynch, Raman Azad, John Neal, Paul W Woods, Brigit L Roberts, Mark R Kol, Helen S Wong, Katharina C Riss, Thomas Staudinger, Xavier Wittebole, Caroline Berghe, Pierre A Bulpa, Alain M Dive, Rik Verstraete, Herve Lebbinck, Pieter Depuydt, Joris Vermassen, Philippe Meersseman, Helga Ceunen, Jonas I Rosa, Daniel O Beraldo, Claudio Piras, Adenilton M Rampinelli, Antonio P Nassar Jr, Sergio Mataloun, Marcelo Moock, Marlus M Thompson, Claudio H Gonçalves, Ana Carolina P Antônio, Aline Ascoli, Rodrigo S Biondi, Danielle C Fontenele, Danielle Nobrega, Vanessa M Sales, Ahmad Yazid Bin Hj Abul Wahab, Maizatul Ismail, Suresh Shindhe, John Laffey, Francois Beloncle, Kyle G Davies, Rob Cirone, Venika Manoharan, Mehvish Ismail, Ewan C Goligher, Mandeep Jassal, Erin Nishikawa, Areej Javeed, Gerard Curley, Nuttapol Rittayamai, Matteo Parotto, Niall D Ferguson, Sangeeta Mehta, Jenny Knoll, Antoine Pronovost, Sergio Canestrini, Alejandro R Bruhn, Patricio H Garcia, Felipe A Aliaga, Pamela A Farías, Jacob S Yumha, Claudia A Ortiz, Javier E Salas, Alejandro A Saez, Luis D Vega, Eduardo F Labarca, Felipe T Martinez, Nicolás G Carreño, Pilar Lora, Haitao Liu, Haibo Qiu, Ling Liu, Rui Tang, Xiaoming Luo, Youzhong An, Huiying Zhao, Yan Gao, Zhe Zhai, Zheng L Ye, Wei Wang, Wenwen Li, Qingdong Li, Ruiqiang Zheng, Wenkui Yu, Juanhong Shen, Xinyu Li, Tao Yu, Weihua Lu, Ya Q Wu, Xiao B Huang, Zhenyang He, Yuanhua Lu, Hui Han, Fan Zhang, Renhua Sun, Hua X Wang, Shu H Qin, Bao H Zhu, Jun Zhao, Jian Liu, Bin Li, Jing L Liu, Fa C Zhou, Qiong J Li, Xing Y Zhang, Zhou Li-Xin, Qiang Xin-Hua, Liangyan Jiang, Yuan N Gao, Xian Y Zhao, Yuan Y Li, Xiao L Li, Chunting Wang, Qingchun Yao, Rongguo Yu, Kai Chen, Huanzhang Shao, Bingyu Qin, Qing Q Huang, Wei H Zhu, Ai Y Hang, Ma X Hua, Yimin Li, Yonghao Xu, Yu D Di, Long L Ling, Tie H Qin, Shou H Wang, Junping Qin, Yi Han, Suming Zhou, Monica P Vargas, Juan I Silesky Jimenez, Manuel A González Rojas, Jaime E SolisQuesada, Christian M Ramirez-Alfaro, Jan Máca, Peter Sklienka, Jakob Gjedsted, Aage Christiansen, Jonas Nielsen, Boris G Villamagua, Iguel Llano, Philippe Burtin, Gautier Buzancais, Pascal Beuret, Nicolas Pelletier, Satar Mortaza, Alain Mercat, Jonathan Chelly, Sébastien Jochmans, Nicolas Terzi, Cédric Daubin, Guillaume Carteaux, Nicolas de Prost, Jean-Daniel Chiche, Fabrice Daviaud, Tài Pham, Muriel Fartoukh, Guillaume Barberet, Jerome Biehler, Jean Dellamonica, Denis Doyen, Jean-Michel Arnal, Anais Briquet, Sami Hraiech, Laurent Papazian, Arnaud Follin, Damien Roux, Jonathan Messika, Evangelos Kalaitzis, Laurence Dangers, Alain Combes, Siu-Ming Au, Gaetan Béduneau, Dorothée Carpentier, Elie H Zogheib, Herve Dupont, Sylvie Ricome, Francesco L Santoli, Sebastien L Besset, Philippe Michel, Bruno Gelée, Pierre-Eric Danin, Bernard Goubaux, Philippe J Crova, Nga T Phan, Frantz Berkelmans, Julio C Badie, Romain Tapponnier, Josette Gally, Samy Khebbeb, Jean-Etienne Herbrecht, Francis Schneider, PierreLouis M Declercq, Jean-Philippe Rigaud, Jacques Duranteau, Anatole Harrois, Russell Chabanne, Julien Marin, Charlene Bigot, Sandrine Thibault, Mohammed Ghazi, Messabi Boukhazna, Salem Ould Zein, Jack R Richecoeur, Daniele M Combaux, Fabien Grelon, Charlene Le Moal, Elise P Sauvadet, Adrien Robine, Virginie Lemiale, Danielle Reuter, Martin Dres, Alexandre Demoule, Dany Goldgran-Toledano, Loredana Baboi, Claude Guérin, Ralph Lohner, Jens Kraßler, Susanne Schäfer, Kai D Zacharowski, Patrick Meybohm, Andreas W Reske, Philipp Simon, HansBernd F Hopf, Michael Schuetz, Thomas Baltus, Metaxia N Papanikolaou, Theonymfi G Papavasilopoulou, Giannis A Zacharas, Vasilis Ourailogloy, Eleni K Mouloudi, Eleni V Massa, Eva O Nagy, Electra E Stamou, Ellada V Kiourtzieva, Marina A Oikonomou, Luis E Avila, Cesar A Cortez, Johanna E Citalán, Sameer A Jog, Safal D Sable, Bhagyesh Shah, Mohan Gurjar, Arvind K Baronia, Mohammedfaruk Memon, Radhakrishnan Muthuchellappan, Venkatapura J Ramesh, Anitha Shenoy, Ramesh Unnikrishnan, Subhal B Dixit, Rachana V Rhayakar, Nagarajan Ramakrishnan, Vallish K Bhardwaj, Heera L Mahto, Sudha V Sagar, Vijayanand Palaniswamy, Deeban Ganesan, Seyed Mohammadreza Hashemian, Hamidreza Jamaati, Farshad Heidari, Edel A Meaney, Alistair Nichol, Karl M Knapman, Donall O'Croinin, Eimhin S Dunne, Dorothy M Breen, Kevin P Clarkson, Rola F Jaafar, Rory Dwyer, Fahd Amir, Olaitan O Ajetunmobi, Aogan C O'Muircheartaigh, Colin S Black, Nuala Treanor, Daniel V Collins, Wahid Altaf, Gianluca Zani, Maurizio Fusari, Savino Spadaro, Carlo A Volta, Romano Graziani, Barbara Brunettini, Salvatore Palmese, Paolo Formenti, Michele Umbrello, Andrea Lombardo, Elisabetta Pecci, Marco Botteri, Monica Savioli, Alessandro Protti, Alessia Mattei, Lorenzo Schiavoni, Andrea Tinnirello, Manuel Todeschini, Antonino Giarratano, Andrea Cortegiani, Antonino Giarratano, Andrea Cortegiani, Massimo M Antonelli, Luca M Montini, Paolo Casalena, Sergio Scafetti, Giovanna Panarello, Giovanna Occhipinti, Nicolò Patroniti, Matteo Pozzi, Roberto R Biscione, Michela M Poli, Ferdinando Raimondi, Daniela Albiero, Giulia Crapelli, Eduardo Beck, Vincenzo Pota, Vincenzo Schiavone, Alexandre Molin, Fabio Tarantino, Giacomo Monti, Elena Frati, Lucia Mirabella, Gilda Cinnella, Tommaso Fossali, Riccardo Colombo, Pierpaolo Terragni, Ilaria Pattarino, Francesco Mojoli, Antonio Braschi, Erika E Borotto, Andrea N Cracchiolo, Daniela M Palma, Francesco Raponi, Giuseppe Foti, Ettore R Vascotto, Andrea Coppadoro, Luca Brazzi, Leda Floris, Giorgio A Iotti, Aaron Venti, Osamu Yamaguchi, Shunsuke Takagi, Hiroki N Maeyama, Eizo Watanabe, Yoshihiro Yamaji, Kazuyoshi Shimizu, Kyoko Shiozaki, Satoru Futami, Sekine Ryosuke, Koji Saito, Yoshinobu Kameyama, Keiko Ueno, Masayo Izawa, Nao Okuda, Hiroyuki Suzuki, Tomofumi Harasawa, Michitaka Nasu, Tadaaki Takada, Fumihito Ito, Shin Nunomiya, Kansuke Koyama, Toshikazu Abe, Kohkichi Andoh, Kohei Kusumoto, Akira Hirata, Akihiro Takaba, Hiroyasu Kimura, Shuhei Matsumoto, Ushio Higashijima, Hiroyuki Honda, Nobumasa Aoki, Hiroshi Imai, Yasuaki Ogino, Ichiko Mizuguchi, Kazuya Ichikado, Kenichi Nitta, Katsunori Mochizuki, Tomoaki Hashida, Hiroyuki Tanaka, Tomoyuki Nakamura, Daisuke Niimi, Takeshi Ueda, Yozo Kashiwa, Akinori Uchiyama, Olegs Sabelnikovs, Peteris Oss, Youssef Haddad, Kong Y Liew, Silvio A Ñamendys-Silva, Yves D Jarquin-Badiola, Luis A Sanchez-Hurtado, Saira S Gomez-Flores, Maria C Marin, Asisclo J Villagomez, Jordana S Lemus, Jonathan M Fierro, Mavy Ramirez Cervantes, Francisco Javier Flores Mejia, Dulce Dector, Alejandro Rojas, Daniel R Gonzalez, Claudia R Estrella, Jorge R Sanchez-Medina, Alvaro Ramirez-Gutierrez, Fernando G George, Janet S Aguirre, Juan A Buensuseso, Manuel Poblano, Juan A Buensuseso, Manuel Poblano, Tarek Dendane, Amine Ali Zeggwagh, Hicham Balkhi, Mina Elkhayari, Nacer Samkaoui, Hanane Ezzouine, Abdellatif Benslama, Mourad Amor, Wajdi Maazouzi, Nedim Cimic, Oliver Beck, Monique M Bruns, Jeroen A Schouten, Myra Rinia, Monique Raaijmakers, Leo M Heunks, Hellen M van Wezel, Serge J Heines, Ulrich Strauch, Marc P Buise, Fabienne D Simonis, Marcus J Schultz, Jennifer C Goodson, Troy S Browne, Leanlove Navarra, Anna Hunt, Robyn A Hutchison, Mathew B Bailey, Lynette Newby, Colin McArthur, Michael Kalkoff, Alex Mcleod, Jonathan Casement, Danielle J Hacking, Finn H Andersen, Merete S Dolva, Jon H Laake, Andreas Barratt-Due, Kim Andre L Noremark, Eldar Søreide, Brit Å Sjøbø, Anne B Guttormsen, Hector H Leon Yoshido, Ronald Zumaran Aguilar, Fredy A Montes Oscanoa, Alain U Alisasis, Joanne B Robles, Rossini Abbie B Pasanting-Lim, Beatriz C Tan, Pawel Andruszkiewicz, Karina Jakubowska, Cristina M Coxo, António M Alvarez, Bruno S Oliveira, Gustavo M Montanha, Nelson C Barros, Carlos S Pereira, António M Messias, Jorge M Monteiro, Ana M Araujo, Nuno T Catorze, Susan M Marum, Maria J Bouw, Rui M Gomes, Vania A Brito, Silvia Castro, Joana M Estilita, Filipa M Barros, Isabel M Serra, Aurelia M Martinho, Dana R Tomescu, Alexandra Marcu, Ovidiu H Bedreag, Marius Papurica, Dan E Corneci, Silvius Ioan Negoita, Evgeny Grigoriev, Alexey I Gritsan, Andrey A Gazenkampf, Ghaleb Almekhlafi, Mohamad M Albarrak, Ghanem M Mustafa, Khalid A Maghrabi, Nawal Salahuddin, Tharwat M Aisa, Ahmed S Al Jabbary, Edgardo Tabhan, Yaseen M Arabi, Yaseen M Arabi, Olivia A Trinidad, Hasan M Al Dorzi, Edgardo E Tabhan, Vesna Bumbasirevic, Bojan Jovanovic, Stefan Bolon, Oliver Smith, Jordi Mancebo, Hernan Aguirre-Bermeo, Juan C Lopez-Delgado, Francisco Esteve, Gemma Rialp, Catalina Forteza, Candelaria De Haro, Antonio Artigas, Guillermo M Albaiceta, Sara De Cima-Iglesias, Leticia Seoane-Quiroga, Alexandra Ceniceros-Barros, Antonio L RuizAguilar, Luis M Claraco-Vega, Juan Alfonso Soler, Maria Del Carmen Lorente, Cecilia Hermosa, Federico Gordo, Miryam PrietoGonzález, Juan B López-Messa, Manuel P Perez, Cesar P Perez, Raquel Montoiro Allue, Ferran RocheCampo, Marcos Ibañez-Santacruz, Susana TempranoSusana, Maria C Pintado, Raul De Pablo, Pilar Ricart Aroa Gómez, Silvia Rodriguez Ruiz, Silvia Iglesias Moles, Mª Teresa Jurado, Alfons Arizmendi, Enrique A Piacentini, Nieves Franco, Teresa Honrubia, Meisy Perez Cheng, Elena Perez Losada, Javier Blanco, Luis J Yuste, Cecilia Carbayo-Gorriz, Francisca G Cazorla-Barranquero, Javier G Alonso, Rosa S Alda, Ángela Algaba, Gonzalo Navarro, Enrique Cereijo, Esther Diaz-Rodriguez, Diego Pastor Marcos, Laura Alvarez Montero, Luis Herrera Para, Roberto Jimenez Sanchez, Miguel Angel Blasco Navalpotro, Ricardo Diaz Abad, Raquel Montiel González, Dácil Parrilla Toribio, Alejandro G Castro, Maria Jose D Artiga, Oscar Penuelas, Tomas P Roser, Moreno F Olga, Elena Gallego Curto, Rocío Manzano Sánchez, Vallverdu P Imma, Garcia M Elisabet, Laura Claverias, Monica Magret, Ana M Pellicer, Lucia L Rodriguez, Jesús Sánchez-Ballesteros, Ángela González-Salamanca, Antonio G Jimenez, Francisco P Huerta, Juan Carlos J Sotillo Diaz, Esther Bermejo Lopez, David D Llinares Moya, Alec A Tallet Alfonso, Palazon Sanchez Eugenio Luis, Palazon Sanchez Cesar, Sánchez I Rafael, Corcoles G Virgilio, Noelia N Recio, Christian C Rylander, Bernhard Holzgraefe, Lars M Broman, Joanna Wessbergh, Linnea Persson, Fredrik Schiöler, Hans Kedelv, Anna Oscarsson Tibblin, Henrik Appelberg, Lars Hedlund, Johan Helleberg, Karin E Eriksson, Rita Glietsch, Niklas Larsson, Ingela Nygren, Silvia L Nunes, Anna-Karin Morin, Thomas Kander, Anne Adolfsson, Lise Piquilloud, Hervé O Zender, Corinne Leemann-Refondini, Souheil Elatrous, Slaheddine Bouchoucha, Imed Chouchene, Islem Ouanes, Asma Ben Souissi, Salma Kamoun, Oktay Demirkiran, Mustafa Aker, Emre Erbabacan, Ilkay Ceylan, Nermin Kelebek Girgin, Menekse Ozcelik, Necmettin Ünal, Basak Ceyda Meco, Onat O Akyol, Suleyman S Derman, Barry Kennedy, Ken Parhar, Latha Srinivasa, Lia McNamee, Danny McAuley, Phil Hopkins, Clare Mellis, Vivek Kakar, Dan Hadfield, Andre Vercueil, Kaushik Bhowmick, Sally K Humphreys, Andrew Ferguson, Raymond Mckee, Ashok S Raj, Danielle A Fawkes, Philip Watt, Linda Twohey, Rajeev R Jha, Matthew Thomas, Alex Morton, Varsha Kadaba, Mark J Smith, Anil P Hormis, Santhana G Kannan, Miriam Namih, Henrik Reschreiter, Julie Camsooksai, Alek Kumar, Szabolcs Rugonfalvi, Christopher Nutt, Orla Oneill, Colette Seasman, Ged Dempsey, Christopher J Scott, Helen E Ellis, Stuart Mckechnie, Paula J Hutton, Nora N Di Tomasso, Michela N Vitale, Ruth O Griffin, Michael N Dean, Julius H Cranshaw, Emma L Willett, Nicholas Ioannou, Sarah Gillis, Peter Csabi, Rosaleen Macfadyen, Heidi Dawson, Pieter D Preez, Alexandra J Williams, Owen Boyd, Laura Ortiz-Ruiz de Gordoa, Jon Bramall, Sophie Symmonds, Simon K Chau, Tim Wenham, Tamas Szakmany, Piroska Toth-Tarsoly, Katie H McCalman, Peter Alexander, Lorraine Stephenson, Thomas Collyer, Rhiannon Chapman, Raphael Cooper, Russell M Allan, Malcolm Sim, David W Wrathall, Donald A Irvine, Kim S Zantua, John C Adams, Andrew J Burtenshaw, Gareth P Sellors, Ingeborg D Welters, Karen E Williams, Robert J Hessell, Matthew G Oldroyd, Ceri E Battle, Suresh Pillai, Istvan Kajtor, Mageswaran Sivashanmugavel, Sinead C Okane, Adrian Donnelly, Aniko D Frigyik, Jon P Careless, Martin M May, Richard Stewart, T John Trinder, Samantha J Hagan, Jade M Cole, Caroline C MacFie, Anna T Dowling, Javier Hurtado, Nicolás Nin, Javier Hurtado, Edgardo Nuñez, Gustavo Pittini, Ruben Rodriguez, María C Imperio, Cristina Santos, Ana G França, Alejandro Ebeid, Alberto Deicas, Carolina Serra, Aditya Uppalapati, Ghassan Kamel, Valerie M Banner-Goodspeed, Jeremy R Beitler, Satyanarayana Reddy Mukkera, Shreedhar Kulkarni, John O Shinn Iii, Dina Gomaa, Christopher Tainter, Jarone Lee, Tomaz MesarJarone Lee, Dale J Yeatts, Jessica Warren, Michael J Lanspa, Russel R Miller, Colin K Grissom, Samuel M Brown, Philippe R Bauer, Ryan J Gosselin, Barrett T Kitch, Jason E Cohen, Scott H Beegle, Shazia Choudry, Renaud M Gueret, Aiman Tulaimat, William Stigler, Hitesh Batra, Nidhi G Huff, Keith D Lamb, Trevor W Oetting, Nicholas M Mohr, Claine Judy, Shigeki Saito, Fayez M Kheir, Fayez Kheir, Adam B Schlichting, Angela Delsing, Daniel R Crouch, Mary Elmasri, Daniel R Crouch, Dina Ismail, Kyle R Dreyer, Thomas C Blakeman, Dina Gomaa, Rebecca M Baro, Carolina Quintana Grijalba, Peter C Hou, Raghu Seethala, Imo Aisiku, Galen Henderson, Gyorgy Frendl, Sen-Kuang Hou, Robert L Owens, Ashley Schomer, UCL - SSS/IREC/MEDA - Pôle de médecine aiguë, UCL - (MGD) Services des soins intensifs, and UCL - (SLuc) Service de soins intensifs
Subjects: Pulmonary and Respiratory Medicine, ARDS, Unidades de cuidados intensivos, [SDV]Life Sciences [q-bio], medicine.medical_treatment, mechanical ventilation, NO, law.invention, 03 medical and health sciences, Tratamiento médico, 0302 clinical medicine, law, Settore MED/41 - ANESTESIOLOGIA, Insuficiencia respiratoria, Medicine, Humans, 030212 general & internal medicine, Prospective Studies, Prospective cohort study, Lung, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, Respiration, Incidence (epidemiology), medicine.disease, Intensive care unit, Respiration, Artificial, 3. Good health, Intensive Care Units, lnfectious Diseases and Global Health Radboud Institute for Health Sciences [Radboudumc 4], medicine.anatomical_structure, 030228 respiratory system, Respiratory failure, Heart failure, Anesthesia, Artificial, ards, business, Respiratory Insufficiency, Enfermedad
Abstract: BackgroundCurrent incidence and outcome of patients with acute hypoxaemic respiratory failure requiring mechanical ventilation in the intensive care unit (ICU) are unknown, especially for patients not meeting criteria for acute respiratory distress syndrome (ARDS).MethodsAn international, multicentre, prospective cohort study of patients presenting with hypoxaemia early in the course of mechanical ventilation, conducted during four consecutive weeks in the winter of 2014 in 459 ICUs from 50 countries (LUNG SAFE). Patients were enrolled with arterial oxygen tension/inspiratory oxygen fraction ratio ≤300 mmHg, new pulmonary infiltrates and need for mechanical ventilation with a positive end-expiratory pressure of ≥5 cmH2O. ICU prevalence, causes of hypoxaemia, hospital survival and factors associated with hospital mortality were measured. Patients with unilateral versus bilateral opacities were compared.Findings12 906 critically ill patients received mechanical ventilation and 34.9% with hypoxaemia and new infiltrates were enrolled, separated into ARDS (69.0%), unilateral infiltrate (22.7%) and congestive heart failure (CHF; 8.2%). The global hospital mortality was 38.6%. CHF patients had a mortality comparable to ARDS (44.1% versus 40.4%). Patients with unilateral-infiltrate had lower unadjusted mortality, but similar adjusted mortality compared to those with ARDS. The number of quadrants on chest imaging was associated with an increased risk of death. There was no difference in mortality comparing patients with unilateral-infiltrate and ARDS with only two quadrants involved.InterpretationMore than one-third of patients receiving mechanical ventilation have hypoxaemia and new infiltrates with a hospital mortality of 38.6%. Survival is dependent on the degree of pulmonary involvement whether or not ARDS criteria are reached.
Published: 2021

5. Positive End-Expiratory Pressure, Pleural Pressure, and Regional Compliance during Pronation. An Experimental Study

Author: Niall D. Ferguson, Takeshi Yoshida, Laurent Brochard, Doreen Engelberts, L. Bastia, K. Osada, Han Chen, L. Felipe Damiani, Marcelo B. P. Amato, Martin Post, Brian P. Kavanagh, Xuehan Li, and Bhushan H. Katira
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, Swine, medicine.medical_treatment, Acute respiratory distress, Critical Care and Intensive Care Medicine, Pleural pressure, Patient Positioning, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Prone Position, Supine Position, Animals, Medicine, 030212 general & internal medicine, Lung Compliance, Positive end-expiratory pressure, Mechanical ventilation, Pleural Cavity, Respiratory Distress Syndrome, Lung protection, business.industry, Lung Injury, respiratory system, respiratory tract diseases, Compliance (physiology), Disease Models, Animal, 030228 respiratory system, Respiratory Mechanics, Cardiology, business, Transpulmonary pressure
Abstract: Rationale: The physiological basis of lung protection and the impact of positive end-expiratory pressure (PEEP) during pronation in acute respiratory distress syndrome are not fully elucidated. Obj...
Published: 2021

6. Role of Positive End-Expiratory Pressure and Regional Transpulmonary Pressure in Asymmetrical Lung Injury

Author: Lu Chen, Marcelo B. P. Amato, Martin Post, Brian P. Kavanagh, Bhushan H. Katira, Doreen Engelberts, Niall D. Ferguson, L. Bastia, L. Felipe Damiani, Takeshi Yoshida, Laurent Brochard, and K. Osada
Subjects: Pulmonary and Respiratory Medicine, Mechanical ventilation, medicine.medical_specialty, business.industry, medicine.medical_treatment, Hyperinflation, Respiratory physiology, respiratory system, Lung injury, Critical Care and Intensive Care Medicine, respiratory tract diseases, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Internal medicine, Cardiology, Medicine, Esophageal pressure, 030212 general & internal medicine, business, Positive end-expiratory pressure, Transpulmonary pressure
Abstract: Rationale: Asymmetrical lung injury is a frequent clinical presentation. Regional distribution of Vt and positive end-expiratory pressure (PEEP) could result in hyperinflation of the less-injured l...
Published: 2021

7. Lung-Protective Ventilation and Associated Outcomes and Costs Among Patients Receiving Invasive Mechanical Ventilation in the ED

Author: Eddy Fan, Peter Tanuseputro, Venkatesh Thiruganasambandamoorthy, Deborah J. Cook, Daniel Brodie, Niall D. Ferguson, Alexandre Tran, Shannon M. Fernando, Laurent Brochard, Allan J. Walkey, Catherine L. Hough, Jeffrey J. Perry, Kwadwo Kyeremanteng, Bram Rochwerg, Andrew J.E. Seely, and Karen E. A. Burns
Subjects: Male, Pulmonary and Respiratory Medicine, ARDS, medicine.medical_specialty, medicine.medical_treatment, Critical Care and Intensive Care Medicine, law.invention, 03 medical and health sciences, 0302 clinical medicine, Primary outcome, Risk Factors, law, Tidal Volume, medicine, Humans, Registries, 030212 general & internal medicine, Hospital Costs, Positive end-expiratory pressure, Retrospective Studies, Ontario, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, Incidence (epidemiology), Lung protective ventilation, Emergency department, Length of Stay, Middle Aged, medicine.disease, Respiration, Artificial, 3. Good health, 030228 respiratory system, Ventilation (architecture), Emergency medicine, Female, Emergency Service, Hospital, Cardiology and Cardiovascular Medicine, business
Abstract: Invasive mechanical ventilation is often initiated in the ED, and mechanically ventilated patients may be kept in the ED for hours before ICU transfer. Although lung-protective ventilation is beneficial, particularly in ARDS, it remains uncertain how often lung-protective tidal volumes are used in the ED, and whether lung-protective ventilation in this setting impacts patient outcomes.What is the association between the use of lung-protective ventilation in the ED and outcomes among invasively ventilated patients?A retrospective analysis (2011-2017) of a prospective registry from eight EDs enrolling consecutive adult patients (≥ 18 years) who received invasive mechanical ventilation in the ED was performed. Lung-protective ventilation was defined by use of tidal volumes ≤ 8 mL/kg predicted body weight. The primary outcome was hospital mortality. Secondary outcomes included development of ARDS, hospital length of stay, and total hospital costs.The study included 4,174 patients, of whom 2,437 (58.4%) received lung-protective ventilation in the ED. Use of lung-protective ventilation was associated with decreased odds of hospital death (adjusted OR [aOR], 0.91; 95% CI, 0.84-0.96) and development of ARDS (aOR, 0.87; 95% CI, 0.81-0.92). Patients who received lung-protective ventilation in the ED had shorter median duration of mechanical ventilation (4 vs 5 days; P 0.01), shorter median hospital length of stay (11 vs 14 days; P .001), and reduced total hospital costs (Can$44,348 vs Can$52,484 [US$34,153 vs US$40,418]; P = .03) compared with patients who received higher tidal volumes.Use of lung-protective ventilation in the ED was associated with important patient- and system-centered outcomes, including lower hospital mortality, decreased incidence of ARDS, lower hospital length of stay, and decreased total costs. Protocol development promoting the regular use of lung-protective ventilation in the ED may be of value.
Published: 2021

8. Prevalence of Reverse Triggering in Early ARDS

Author: Pablo O. Rodriguez, Norberto Tiribelli, Sebastián Fredes, Emiliano Gogniat, Gustavo Plotnikow, Ignacio Fernandez Ceballos, Romina Pratto, Alejandro Raimondi, María Guaymas, Santiago Ilutovich, Eduardo San Román, Matías Madorno, Patricio Maskin, Laurent Brochard, Mariano Setten, and Sebastian Fredes
Subjects: Pulmonary and Respiratory Medicine, Mechanical ventilation, ARDS, business.industry, medicine.medical_treatment, Hazard ratio, Critical Care and Intensive Care Medicine, medicine.disease, Discontinuation, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Interquartile range, Anesthesia, Breathing, Medicine, 030212 general & internal medicine, Respiratory system, Cardiology and Cardiovascular Medicine, business, Tidal volume
Abstract: Background The prevalence of reverse triggering (RT) in the early phase of ARDS is unknown. Research Question During early ARDS, what is the proportion of patients affected by RT, what are its potential predictors, and what is its association with clinical outcomes? Study Design and Methods This was prospective, multicenter, and observational study. Patients who met the Berlin definition of ARDS with less than 72 h of mechanical ventilation and had not been paralyzed with neuromuscular blockers were screened. A 30-min recording of respiratory signals was obtained from the patients as soon as they were enrolled, and the number of breaths with RT were counted. Results One hundred patients were included. ARDS was mild to moderate in 92% of them. The recordings were obtained after a median of 1 day (interquartile range, 1-2 days) of ventilation. Fifty patients had RT, and most of these events (97%) were not associated with breath stacking. Detecting RT was associated with lower tidal volume (V t ) and less opiate infusion. The presence of RT was not associated with time to discontinuation of mechanical ventilation (subdistribution hazard ratio, 1.03; 95% CI, 0.6-1.77), but it possibly was associated with a reduced hospital mortality (hazard ratio, 0.65; 95% CI, 0.57-0.73). Interpretation Fifty percent of patients receiving assist-control ventilation for mild or moderate ARDS, sedated and nonparalyzed, demonstrate RT without breath stacking on the first day of mechanical ventilation. RT may be associated with low VTS and opiate doses. Trial Registry ClinicalTrials.gov ; No.: NCT02732041; URL: www.clinicaltrials.gov .
Published: 2021

9. Oesophageal pressure as a surrogate of pleural pressure in mechanically ventilated patients

Author: Sami Hraiech, Jean-Marie Forel, Takeshi Yoshida, Antoine Roch, Karine Baumstarck, Florence Daviet, Laurent Brochard, Antoine Tilmont, Geoffrey Brioude, Christophe Guervilly, Laurent Papazian, and Benjamin Coiffard
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, Critical Care, medicine.medical_treatment, lcsh:Medicine, Pleural pressure, law.invention, 03 medical and health sciences, 0302 clinical medicine, law, Internal medicine, medicine, Mechanical ventilation, Lung, business.industry, lcsh:R, Oesophageal pressure, 030208 emergency & critical care medicine, Original Articles, respiratory system, University hospital, Intensive care unit, respiratory tract diseases, medicine.anatomical_structure, 030228 respiratory system, Cardiology, business, Airway, Transpulmonary pressure
Abstract: Background Oesophageal pressure (Poes) is used to approximate pleural pressure (Ppl) and therefore to estimate transpulmonary pressure (PL). We aimed to compare oesophageal and regional pleural pressures and to calculate transpulmonary pressures in a prospective physiological study on lung transplant recipients during their stay in the intensive care unit of a tertiary university hospital. Methods Lung transplant recipients receiving invasive mechanical ventilation and monitored by oesophageal manometry and dependent and nondependent pleural catheters were investigated during the post-operative period. We performed simultaneous short-time measurements and recordings of oesophageal manometry and pleural pressures. Expiratory and inspiratory PL were computed by subtracting regional Ppl or Poes from airway pressure; inspiratory PL was also calculated with the elastance ratio method. Results 16 patients were included. Among them, 14 were analysed. Oesophageal pressures correlated with dependent and nondependent pleural pressures during expiration (R2=0.71, p=0.005 and R2=0.77, p=0.001, respectively) and during inspiration (R2=0.66 for both, p=0.01 and p=0.014, respectively). PL values calculated using Poes were close to those obtained from the dependent pleural catheter but higher than those obtained from the nondependent pleural catheter both during expiration and inspiration. Conclusions In ventilated lung transplant recipients, oesophageal manometry is well correlated with pleural pressure. The absolute value of Poes is higher than Ppl of nondependent lung regions and could therefore underestimate the highest level of lung stress in those at high risk of overinflation., During controlled ventilation without respiratory muscle activity, absolute oesophageal pressure is higher than the pleural pressure of the nondependent lung regions and could therefore underestimate the highest level of lung stress in that lung https://bit.ly/3a95CUh
Published: 2021

10. Identifying Subjects at Risk for Diaphragm Atrophy During Mechanical Ventilation Using Routinely Available Clinical Data

Author: Stefannie Vorona, Gordon D. Rubenfeld, Michael C. Sklar, Laurent Brochard, Martin Urner, Eddy Fan, Niall D. Ferguson, Lu Chen, Martin Dres, Ewan C. Goligher, and Nicholas Mitsakakis
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, Respiratory rate, medicine.medical_treatment, Diaphragm, Diaphragmatic breathing, Critical Care and Intensive Care Medicine, Contractility, 03 medical and health sciences, 0302 clinical medicine, Atrophy, Internal medicine, medicine, Humans, Prospective Studies, Ultrasonography, Mechanical ventilation, Receiver operating characteristic, business.industry, General Medicine, Odds ratio, medicine.disease, Respiration, Artificial, Diaphragm (structural system), Editorial, 030228 respiratory system, Cardiology, business
Abstract: Diaphragmatic respiratory effort during mechanical ventilation is an important determinant of patient outcome, but direct measurement of diaphragmatic contractility requires specialized instrumentation and technical expertise. We sought to determine whether routinely collected clinical variables can predict diaphragmatic contractility and stratify the risk of diaphragm atrophy.We conducted a secondary analysis of a prospective cohort study on diaphragm ultrasound in mechanically ventilated subjects. Clinical variables, such as breathing frequency, ventilator settings, and blood gases, were recorded longitudinally. Machine learning techniques were used to identify variables predicting diaphragm contractility and stratifying the risk of diaphragm atrophy (10% decrease in thickness from baseline). Performance of the variables was evaluated in mixed-effects logistic regression and random-effects tree models using the area under the receiver operating characteristic curve.Measurements were available for 761 study days in 191 subjects, of whom 73 (38%) developed diaphragm atrophy. No routinely collected clinical variable, alone or in combination, could accurately predict either diaphragm contractility or the development of diaphragm atrophy (model area under the receiver operating characteristic curve 0.63-0.75). The risk of diaphragm atrophy was not significantly different according to the presence or absence of patient-triggered breaths (38.3% vs 38.6%; odds ratio 1.01, 95% CI 0.05-2.03). Diaphragm thickening fraction15% during either of the first 2 d of the study was associated with a higher risk of atrophy (44.6% vs 26.1%; odds ratio 2.28, 95% CI 1.05-4.95).Diaphragmatic contractility and the risk of diaphragm atrophy could not be reliably determined from routinely collected clinical variables and ventilator settings. A single measurement of diaphragm thickening fraction measured within 48 h of initiating mechanical ventilation can be used to stratify the risk of diaphragm atrophy during mechanical ventilation.
Published: 2020

11. Proportional modes of ventilation

Author: Laurent Brochard, Leo M. A. Heunks, Michela Rauseo, Annemijn H. Jonkman, Guillaume Carteaux, Michael C. Sklar, and Irene Telias
Subjects: Male, medicine.medical_specialty, Technology, medicine.medical_treatment, Respiratory effort, Pressure support ventilation, Critical Care and Intensive Care Medicine, law.invention, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Proportional Assist Ventilation, Physical medicine and rehabilitation, Mechanical ventilation, law, medicine, Neurally adjusted ventilatory assist, Tidal Volume, Humans, Interactive Ventilatory Support, Lung, business.industry, 030208 emergency & critical care medicine, Respiration, Artificial, 030228 respiratory system, Inspiratory assist, Ventilation (architecture), Female, Narrative Review, Proportional modes, business
Abstract: Proportional modes of ventilation assist the patient by adapting to his/her effort, which contrasts with all other modes. The two proportional modes are referred to as neurally adjusted ventilatory assist (NAVA) and proportional assist ventilation with load-adjustable gain factors (PAV+): they deliver inspiratory assist in proportion to the patient’s effort, and hence directly respond to changes in ventilatory needs. Due to their working principles, NAVA and PAV+ have the ability to provide self-adjusted lung and diaphragm-protective ventilation. As these proportional modes differ from ‘classical’ modes such as pressure support ventilation (PSV), setting the inspiratory assist level is often puzzling for clinicians at the bedside as it is not based on usual parameters such as tidal volumes and PaCO2 targets. This paper provides an in-depth overview of the working principles of NAVA and PAV+ and the physiological differences with PSV. Understanding these differences is fundamental for applying any assisted mode at the bedside. We review different methods for setting inspiratory assist during NAVA and PAV+ , and (future) indices for monitoring of patient effort. Last, differences with automated modes are mentioned.
Published: 2020

12. High-Flow Nasal Cannula in the Immediate Postoperative Period

Author: Laurent Brochard, Dipayan Chaudhuri, Vatsal Trivedi, Bram Rochwerg, Sharon Einav, Karen E.A. Burns, Jean Pierre Frat, Sameer Jog, David Granton, Yigal Helviz, Tommaso Mauri, Samir Jaber, Dominic Xiang Wang, Salvatore Maurizio Maggiore, Ewan C. Goligher, Carol L. Hodgson, Gonzalo Hernández, Lawrence Mbuagbaw, Jean-Damien Ricard, and Jordi Mancebo
Subjects: Pulmonary and Respiratory Medicine, business.industry, medicine.medical_treatment, Absolute risk reduction, Subgroup analysis, Critical Care and Intensive Care Medicine, medicine.disease_cause, 3. Good health, law.invention, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Respiratory failure, Randomized controlled trial, law, Anesthesia, Oxygen therapy, Relative risk, Medicine, Intubation, 030212 general & internal medicine, Cardiology and Cardiovascular Medicine, business, Nasal cannula
Abstract: Background Studies have demonstrated that high-flow nasal cannula (HFNC) prevents intubation in acute hypoxic respiratory failure when compared with conventional oxygen therapy (COT). However, the data examining routine HFNC use in the immediate postoperative period are less clear. Research Question Is routine HFNC use superior to COT or noninvasive ventilation (NIV) use in preventing intubation in patients postoperatively? Study Design and Methods We comprehensively searched databases (PubMed, Embase, Web of Science) to identify randomized controlled trials (RCTs) that compared the effect of HFNC use with that of COT or NIV in the immediate postoperative period on reintubation, escalation of respiratory support, hospital mortality, ICU and hospital length of stay (LOS), postoperative hypoxemia, and treatment complications. We assessed individual study risk of bias (RoB) by using the revised Cochrane RoB 2 tool and rated certainty in outcomes by using the Grading of Recommendations Assessment, Development and Evaluation framework. Results We included 11 RCTs enrolling 2,201 patients. Ten compared HFNC with COT and one with NIV. Compared with COT use, HFNC use in the postoperative period was associated with a lower reintubation rate (relative risk [RR], 0.32; 95% CI, 0.12-0.88; absolute risk reduction [ARR], 2.9%; moderate certainty) and decreased escalation of respiratory support (RR, 0.54; 95% CI, 0.31-0.94; ARR, 5.8%; very low certainty). Post hoc subgroup analysis suggested that this effect was driven by patients who were obese and/or at high risk (subgroup differences, P = .06). We did not find differences in any of the other stated outcomes between HFNC and COT. HFNC was also no different from NIV in reintubation rate, respiratory therapy failure, or ICU LOS. Interpretation With evidence of moderate certainty, prophylactic HFNC reduces reintubation and escalation of respiratory support compared with COT in the immediate postoperative period after cardiothoracic surgery. This effect is likely driven by patients who are at high risk and/or obese. These findings support postoperative prophylactic HFNC use in the patients who are at high risk and/or obese undergoing cardiothoracic surgery.
Published: 2020

13. High-Flow Nasal Cannula Compared With Conventional Oxygen Therapy or Noninvasive Ventilation Immediately Postextubation: A Systematic Review and Meta-Analysis

Author: Jean Pierre Frat, Samir Jaber, Gonzalo Hernández, Sameer Jog, Dominic Xiang Wang, Ewan C. Goligher, Jean-Damien Ricard, Vatsal Trivedi, Karen E. A. Burns, Bram Rochwerg, Jordi Mancebo, Salvatore Maurizio Maggiore, Dipayan Chaudhuri, Yigal Helviz, Tommaso Mauri, David Granton, Laurent Brochard, Sharon Einav, and Carol L. Hodgson
Subjects: business.industry, medicine.medical_treatment, 030208 emergency & critical care medicine, Oxygenation, Critical Care and Intensive Care Medicine, medicine.disease_cause, 3. Good health, law.invention, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Respiratory failure, Randomized controlled trial, law, Anesthesia, Relative risk, Meta-analysis, Oxygen therapy, Medicine, Noninvasive ventilation, business, Nasal cannula
Abstract: Objectives Reintubation after failed extubation is associated with increased mortality and longer hospital length of stay. Noninvasive oxygenation modalities may prevent reintubation. We conducted a systematic review and meta-analysis to determine the safety and efficacy of high-flow nasal cannula after extubation in critically ill adults. Data sources We searched MEDLINE, EMBASE, and Web of Science. Study selection We included randomized controlled trials comparing high-flow nasal cannula to other noninvasive methods of oxygen delivery after extubation in critically ill adults. Data extraction We included the following outcomes: reintubation, postextubation respiratory failure, mortality, use of noninvasive ventilation, ICU and hospital length of stay, complications, and comfort. Data synthesis We included eight randomized controlled trials (n = 1,594 patients). Compared with conventional oxygen therapy, high-flow nasal cannula decreased reintubation (relative risk, 0.46; 95% CI, 0.30-0.70; moderate certainty) and postextubation respiratory failure (relative risk, 0.52; 95% CI, 0.30-0.91; very low certainty), but had no effect on mortality (relative risk, 0.93; 95% CI, 0.57-1.52; moderate certainty), or ICU length of stay (mean difference, 0.05 d fewer; 95% CI, 0.83 d fewer to 0.73 d more; high certainty). High-flow nasal cannula may decrease use of noninvasive ventilation (relative risk, 0.64; 95% CI, 0.34-1.22; moderate certainty) and hospital length of stay (mean difference, 0.98 d fewer; 95% CI, 2.16 d fewer to 0.21 d more; moderate certainty) compared with conventional oxygen therapy, however, certainty was limited by imprecision. Compared with noninvasive ventilation, high-flow nasal cannula had no effect on reintubation (relative risk, 1.16; 95% CI, 0.86-1.57; low certainty), mortality (relative risk, 1.12; 95% CI, 0.82-1.53; moderate certainty), or postextubation respiratory failure (relative risk, 0.82; 95% CI, 0.48-1.41; very low certainty). High-flow nasal cannula may reduce ICU length of stay (moderate certainty) and hospital length of stay (moderate certainty) compared with noninvasive ventilation. Conclusions High-flow nasal cannula reduces reintubation compared with conventional oxygen therapy, but not compared with noninvasive ventilation after extubation.
Published: 2020

14. Comparing the Effects of Tidal Volume, Driving Pressure, and Mechanical Power on Mortality in Trials of Lung-Protective Mechanical Ventilation

Author: E. L. V. Costa, Eddy Fan, Carol L. Hodgson, Manuel Tisminetzky, Jose Dianti, Laurent Brochard, Lorenzo Del Sorbo, John Matelski, Allan J. Walkey, Laveena Munshi, and Ewan C. Goligher
Subjects: Adult, Pulmonary and Respiratory Medicine, medicine.medical_specialty, ARDS, medicine.medical_treatment, Subgroup analysis, Lung injury, Critical Care and Intensive Care Medicine, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Tidal Volume, medicine, Humans, Lung, Tidal volume, Original Research, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, General Medicine, Odds ratio, respiratory system, medicine.disease, Respiration, Artificial, respiratory tract diseases, medicine.anatomical_structure, 030228 respiratory system, Cardiology, Breathing, business
Abstract: BACKGROUND: The unifying goal of lung-protective ventilation strategies in ARDS is to minimize the strain and stress applied by mechanical ventilation to the lung to reduce ventilator-induced lung injury (VILI). The relative contributions of the magnitude and frequency of mechanical stress and the end-expiratory pressure to the development of VILI is unknown. Consequently, it is uncertain whether the risk of VILI is best quantified in terms of tidal volume (V(T)), driving pressure (ΔP), or mechanical power. METHODS: The correlation between differences in V(T), ΔP, and mechanical power and the magnitude of mortality benefit in trials of lung-protective ventilation strategies in adult subjects with ARDS was assessed by meta-regression. Modified mechanical power was computed including PEEP (Power(elastic)), excluding PEEP (Power(dynamic)), and using ΔP (Power(driving)). The primary analysis incorporated all included trials. A secondary subgroup analysis was restricted to trials of lower versus higher PEEP strategies. RESULTS: We included 9 trials involving 4,731 subjects in the analysis. Odds ratios for moderation derived from meta-regression showed that variations in V(T), ΔP, and Power(dynamic) were associated with increased mortality with odds ratios of 1.24 (95% CI 1.03–1.49), 1.31 (95% CI 1.03–1.66), and 1.37 (95% CI 1.05–1.78), respectively. In trials comparing higher versus lower PEEP strategies, Power(elastic) was increased in the higher PEEP arm (24 ± 1.7 vs 20 ± 1.5 J/min, respectively), whereas the other parameters were not affected on average by a higher PEEP ventilation strategy. CONCLUSIONS: In trials of lung-protective ventilation strategies, V(T), ΔP, Power(elastic), Power(dynamic), and Power(driving) exhibited similar moderation of treatment effect on mortality. In this study, modified mechanical power did not add important information on the risk of death from VILI in comparison to V(T) or ΔP.
Published: 2020

15. An extracellular oxygen carrier during prolonged pulmonary preservation improves post-transplant lung function

Author: Aadil Ali, Thomas K. Waddell, Mingyao Liu, William E. Stansfield, Marcelo Cypel, Khaled Ramadan, Y. Watanabe, Shaf Keshavjee, Laurent Brochard, A. Gazzalle, Manyin Chen, M. Galasso, Tatsuaki Watanabe, Eddy Fan, H. Gokhale, and R. Ribeiro
Subjects: 0301 basic medicine, Pulmonary and Respiratory Medicine, Extracorporeal Circulation, Swine, medicine.medical_treatment, chemistry.chemical_element, 030204 cardiovascular system & hematology, Oxygen, 03 medical and health sciences, 0302 clinical medicine, medicine, Extracellular, Animals, Lung transplantation, Lung, Transplantation, business.industry, Liter, Organ Preservation, Oxygenation, Right pulmonary artery, Tissue Donors, Disease Models, Animal, 030104 developmental biology, medicine.anatomical_structure, chemistry, Reperfusion Injury, Anesthesia, Surgery, Cardiology and Cardiovascular Medicine, business, Lung Transplantation
Abstract: Background The use of a novel extracellular oxygen carrier (EOC) preservation additive known as HEMO2Life has recently been shown to lead to a superior preservation of different types of solid organs. Our study aimed to investigate the effect of this EOC on extending lung preservation time and its mechanism of action. Methods Donor pigs were randomly allocated to either of the following 2 groups (n = 6 per group): (1) 36 hours cold preservation or (2) 36 hours cold preservation with 1 g/liter of EOC. The lungs were evaluated through 12 hours of normothermic ex vivo lung perfusion (EVLP) followed by a left-single lung transplant into a recipient pig. Grafts were reperfused for 4 hours, followed by right pulmonary artery clamping to assess graft oxygenation function. Results During EVLP assessment, EOC-treated lungs showed improvements in physiologic parameters, whereas the control lungs deteriorated. After a total of 48 hours of preservation (36 hours cold + 12 hours normothermic EVLP), transplanted grafts in the treatment group displayed significantly better oxygenation than in the controls (PaO2/FiO2: 437 ± 36 mm Hg vs 343 ± 27 mm Hg, p = 0.041). In addition, the use of EOC led to significantly less edema formation (wet-to-dry ratio: 4.95 ± 0.29 vs 6.05 ± 0.33, p = 0.026), less apoptotic cell death (p = 0.041), improved tight junction preservation (p = 0.002), and lower levels of circulating IL-6 within recipient plasma (p = 0.004) compared with non-use of EOC in the control group after transplantation. Conclusion The use of an EOC during an extended pulmonary preservation period led to significantly superior early post-transplant lung function.
Published: 2020

16. Moderate Certainty Evidence Suggests the Use of High-Flow Nasal Cannula Does Not Decrease Hypoxia When Compared With Conventional Oxygen Therapy in the Peri-Intubation Period

Author: Jean Pierre Frat, Karen E. A. Burns, Dipayan Chaudhuri, Samir Jaber, Gonzalo Hernández, Yigal Helviz, David Granton, Jean-Damien Ricard, Bram Rochwerg, Jordi Mancebo, Sameer Jog, Tommaso Mauri, Salvatore Maurizio Maggiore, Sharon Einav, Dominic Xiang Wang, Carol L. Hodgson, and Laurent Brochard
Subjects: medicine.medical_treatment, Settore MED/41 - Anestesiologia, Critical Care and Intensive Care Medicine, Artificial respiration, medicine.disease_cause, Hypoxemia, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, law, Oxygen therapy, Intubation, Intratracheal, medicine, Cannula, Humans, Intubation, Hypoxia, Noninvasive Ventilation, business.industry, Oxygen Inhalation Therapy, 030208 emergency & critical care medicine, 3. Good health, Oxygen, Intensive Care Units, 030228 respiratory system, Anesthesia, Relative risk, medicine.symptom, Respiratory Insufficiency, business, Nasal cannula
Abstract: Objective: The role of high-flow nasal cannula during and before intubation is unclear despite a number of randomized clinical trials. Our objective was to conduct a systematic review and meta-analysis examining the benefits of high-flow nasal cannula in the peri-intubation period. Data Sources: We performed a comprehensive search of relevant databases (MEDLINE, EMBASE, and Web of Science). Study Selection: We included randomized clinical trials that compared high-flow nasal cannula to other noninvasive oxygen delivery systems in the peri-intubation period. Data Extraction: Our primary outcome was severe desaturation (defined as peripheral oxygen saturation reading < 80% during intubation). Secondary outcomes included peri-intubation complications, apneic time, Pao2 before and after intubation, Paco2 after intubation, ICU length of stay, and short-term mortality. Data Synthesis: We included 10 randomized clinical trials (n = 1,017 patients). High-flow nasal cannula had no effect on the occurrence rate of peri-intubation hypoxemia (relative risk, 0.98; 95% CI, 0.68–1.42; 0.3% absolute risk reduction, moderate certainty), serious complications (relative risk, 0.87; 95% CI, 0.71–1.06), apneic time (mean difference, 10.3 s higher with high-flow nasal cannula; 95% CI, 11.0 s lower to 31.7 s higher), Pao2 measured after preoxygenation (mean difference, 3.6 mm Hg higher; 95% CI, 3.5 mm Hg lower to 10.7 mm Hg higher), or Pao2 measured after intubation (mean difference, 27.0 mm Hg higher; 95% CI, 13.2 mm Hg lower to 67.2 mm Hg higher), when compared with conventional oxygen therapy. There was also no effect on postintubation Paco2, ICU length of stay, or 28-day mortality. Conclusions: We found moderate-to-low certainty evidence that the use of high-flow nasal cannula likely has no effect on severe desaturation, serious complications, apneic time, oxygenation, ICU length of stay, or overall survival when used in the peri-intubation period when compared with conventional oxygen therapy.
Published: 2020

17. Mechanical Ventilation for Acute Respiratory Distress Syndrome during Extracorporeal Life Support. Research and Practice

Author: Daniel F. McAuley, Eddy Fan, V. Marco Ranieri, Alain Combes, Niall D. Ferguson, Kiran Shekar, Tài Pham, Carol L. Hodgson, James J. McNamee, Catherine L. Hough, Vin Pellegrino, Kathy Rowan, M. Elizabeth Wilcox, Thomas Mueller, Daniel Brodie, Ewan C. Goligher, Alain Mercat, Laurent Brochard, Matthieu Schmidt, Jeremy R. Beitler, John F. Fraser, Nicolò Patroniti, Michael Quintel, Darryl Abrams, Antonio Pesenti, Abrams, Darryl, Schmidt, Matthieu, Pham, Tài, Beitler, Jeremy R, Fan, Eddy, Goligher, Ewan C, McNamee, James J, Patroniti, Nicolò, Wilcox, M Elizabeth, Combes, Alain, Ferguson, Niall D, McAuley, Danny F, Pesenti, Antonio, Quintel, Michael, Fraser, John, Hodgson, Carol L, Hough, Catherine L, Mercat, Alain, Mueller, Thoma, Pellegrino, Vin, Ranieri, V Marco, Rowan, Kathy, Shekar, Kiran, Brochard, Laurent, and Brodie, Daniel
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, ARDS, medicine.medical_treatment, Lung injury, Critical Care and Intensive Care Medicine, extracorporeal life support, Extracorporeal, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, law, ECCO2R, Extracorporeal membrane oxygenation, Medicine, Intensive care medicine, Ventilator-induced lung injury, Mechanical ventilation, business.industry, 030208 emergency & critical care medicine, medicine.disease, 3. Good health, 030228 respiratory system, Life support, Breathing, ECMO, business
Abstract: Ventilator-induced lung injury remains a key contributor to the morbidity and mortality of the acute respiratory distress syndrome. Efforts to minimize this injury are typically limited by the need to preserve adequate gas exchange. In the most severe forms of the syndrome, extracorporeal life support is increasingly being deployed for severe hypoxemia or hypercapnic acidosis refractory to conventional ventilator management strategies. Data from a recent randomized controlled trial, a post-hoc analysis of that trial, a meta-analysis, and a large, international, multicenter observational study, all suggest that extracorporeal life support, when combined with lower tidal volumes and airway pressures than the current standard of care, may improve outcomes compared with conventional management in patients with the most severe forms of the acute respiratory distress syndrome. These findings raise important questions not only about the optimal ventilator strategies for patients receiving extracorporeal support, but how various mechanisms of lung injury in the acute respiratory distress syndrome may potentially be mitigated by ultra-lung-protective ventilation strategies when gas exchange is sufficiently managed with the extracorporeal circuit. Additional studies are needed to more precisely delineate the best strategies for optimizing invasive mechanical ventilation in this patient population.
Published: 2020

18. Diaphragm echodensity in mechanically ventilated patients: a description of technique and outcomes

Author: Benjamin Coiffard, Laurent Brochard, Niall D. Ferguson, Martin Dres, Michael C. Sklar, Stephen Riegler, Stefannie Vorona, Ewan C. Goligher, W. Darlene Reid, University Health Network, University of Toronto, St. Michael's Hospital, Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), Toronto General Hospital Research Institute [Canada] (TGHRI), and Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: Male, medicine.medical_specialty, Percentile, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Diaphragm, Critical Care and Intensive Care Medicine, Artificial respiration, Acute respiratory failure, 03 medical and health sciences, 0302 clinical medicine, Interquartile range, Ventilator weaning, Internal medicine, Outcome Assessment, Health Care, medicine, Humans, 030212 general & internal medicine, Ultrasonography, Ontario, Measurement reproducibility, Mechanical ventilation, business.industry, Research, Ultrasound, lcsh:Medical emergencies. Critical care. Intensive care. First aid, Reproducibility of Results, lcsh:RC86-88.9, Middle Aged, Weights and Measures, Respiration, Artificial, Diaphragm (structural system), 030228 respiratory system, Cardiology, Breathing, Female, business
Abstract: Background Acute increases in muscle sonographic echodensity reflect muscle injury. Diaphragm echodensity has not been measured in mechanically ventilated patients. We undertook to develop a technique to characterize changes in diaphragm echodensity during mechanical ventilation and to assess whether these changes are correlated with prolonged mechanical ventilation. Methods Diaphragm ultrasound images were prospectively collected in mechanically ventilated patients and in 10 young healthy subjects. Echodensity was quantified based on the right-skewed distribution of grayscale values (50th percentile, ED50; 85th percentile, ED85). Intra- and inter-analyzer measurement reproducibility was determined. Outcomes recorded included duration of ventilation and ICU complications (including reintubation, tracheostomy, prolonged ventilation, or death). Results Echodensity measurements were obtained serially in 34 patients comprising a total of 104 images. Baseline (admission) diaphragm ED85 was increased in mechanically ventilated patients compared to younger healthy subjects (median 56, interquartile range (IQR) 42–84, vs. 39, IQR 36–52, p = 0.04). Patients with an initial increase in median echodensity over time (≥ + 10 in ED50 from baseline) had fewer ventilator-free days to day 60 (n = 13, median 46, IQR 0–52) compared to patients without this increase (n = 21, median 53 days, IQR 49–56, unadjusted p = 0.03). Both decreases and increases in diaphragm thickness during mechanical ventilation were associated with increases in ED50 over time (adjusted p = 0.03, conditional R2 = 0.80) and the association between increase in ED50 and outcomes persisted after adjusting for changes in diaphragm thickness. Conclusions Many patients exhibit increased diaphragm echodensity at the outset of mechanical ventilation. Increases in diaphragm echodensity during the early course of mechanical ventilation are associated with prolonged mechanical ventilation. Both decreases and increases in diaphragm thickness during mechanical ventilation are associated with increased echodensity.
Published: 2021

19. Automated detection and quantification of reverse triggering effort under mechanical ventilation

Author: Tài Pham, Thomas Piraino, Ricard Mellado Artigas, Rudys Magrans, L. Felipe Damiani, Lluis Blanch, Laurent Brochard, Jaume Montanya, Matías Madorno, Rémi Coudroy, Irene Telias, Intensive care medicine, and ACS - Pulmonary hypertension & thrombosis
Subjects: Male, medicine.medical_specialty, Dyssynchrony, Lung and diaphragm protection, Mechanical ventilation, Respiratory muscles, Reverse triggering, medicine.medical_treatment, Pressure support ventilation, Critical Care and Intensive Care Medicine, NO, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Pressure, medicine, Respiratory muscle, Humans, Aged, Work of Breathing, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, Mean age, lcsh:RC86-88.9, Middle Aged, Weights and Measures, Respiration, Artificial, Predictive value, Diaphragm (structural system), ROC Curve, 030228 respiratory system, Area Under Curve, Respiratory Mechanics, Cardiology, Esophageal pressure, Female, business, Airway
Abstract: Background Reverse triggering (RT) is a dyssynchrony defined by a respiratory muscle contraction following a passive mechanical insufflation. It is potentially harmful for the lung and the diaphragm, but its detection is challenging. Magnitude of effort generated by RT is currently unknown. Our objective was to validate supervised methods for automatic detection of RT using only airway pressure (Paw) and flow. A secondary objective was to describe the magnitude of the efforts generated during RT. Methods We developed algorithms for detection of RT using Paw and flow waveforms. Experts having Paw, flow and esophageal pressure (Pes) assessed automatic detection accuracy by comparison against visual assessment. Muscular pressure (Pmus) was measured from Pes during RT, triggered breaths and ineffective efforts. Results Tracings from 20 hypoxemic patients were used (mean age 65 ± 12 years, 65% male, ICU survival 75%). RT was present in 24% of the breaths ranging from 0 (patients paralyzed or in pressure support ventilation) to 93.3%. Automatic detection accuracy was 95.5%: sensitivity 83.1%, specificity 99.4%, positive predictive value 97.6%, negative predictive value 95.0% and kappa index of 0.87. Pmus of RT ranged from 1.3 to 36.8 cmH20, with a median of 8.7 cmH20. RT with breath stacking had the highest levels of Pmus, and RTs with no breath stacking were of similar magnitude than pressure support breaths. Conclusion An automated detection tool using airway pressure and flow can diagnose reverse triggering with excellent accuracy. RT generates a median Pmus of 9 cmH2O with important variability between and within patients. Trial registration BEARDS, NCT03447288.
Published: 2021

20. Continuous positive airway pressure for respiratory support during COVID-19 pandemic: a frugal approach from bench to bedside

Author: Bilal Badat, Nicolas Mongardon, Keyvan Razazi, C. Deguillard, Frédéric Schlemmer, Mehdi Khellaf, Raphaëlle Huguet, Pascal Lim, Nicolas de Prost, François Templier, Karim Jaffal, Dominique Savary, Francois Morin, Elena Fois, Yvon Deplante, François Beloncle, François Perier, Constance Guillaud, Laurent Brochard, Philippe Grimbert, Armand Mekontso Dessap, Anne-Fleur Haudebourg, Jean-Christophe Richard, Samuel Tuffet, Manuella Pons, Vincent Audard, Arnaud Lesimple, Alain Mercat, Guillaume Carteaux, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), CHU Henri Mondor [Créteil], Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Centre Hospitalier Universitaire [Grenoble] (CHU), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Département de neurosciences (CHU Henri Mondor), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor, University of Toronto, Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Modeling & analysis for medical imaging and Diagnosis (MYRIAD), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Henri Mondor, Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Chard-Hutchinson, Xavier, Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
Subjects: medicine.medical_specialty, medicine.medical_treatment, Continuous positive airway pressure, Context (language use), Respiratory physiology, Critical Care and Intensive Care Medicine, [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, 03 medical and health sciences, Work of breathing, 0302 clinical medicine, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Anesthesiology, medicine, Intubation, Tidal volume, Acute hypoxemic respiratory failure, Frugal innovation, [SDV.MHEP.ME] Life Sciences [q-bio]/Human health and pathology/Emerging diseases, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, COVID-19, 030208 emergency & critical care medicine, lcsh:RC86-88.9, Oxygenation, 3. Good health, respiratory tract diseases, 030228 respiratory system, Emergency medicine, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, [SDV.MHEP.PSR] Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, business
Abstract: Background We describe a frugal approach (focusing on needs, performance, and costs) to manage a massive influx of COVID-19 patients with acute hypoxemic respiratory failure (AHRF) using the Boussignac valve protected by a filter (“Filter Frugal CPAP”, FF-CPAP) in and out the ICU. Methods (1) A bench study measured the impact of two filters with different mechanical properties on CPAP performances, and pressures were also measured in patients. (2) Non-ICU healthcare staff working in COVID-19 intermediate care units were trained with a video tutorial posted on a massive open online course. (3) A clinical study assessed the feasibility and safety of using FF-CPAP to maintain oxygenation and manage patients out of the ICU during a massive outbreak. Results Bench assessments showed that adding a filter did not affect the effective pressure delivered to the patient. The resistive load induced by the filter variably increased the simulated patient’s work of breathing (6–34%) needed to sustain the tidal volume, depending on the filter’s resistance, respiratory mechanics and basal inspiratory effort. In patients, FF-CPAP achieved pressures similar to those obtained on the bench. The massive training tool provided precious information on the use of Boussignac FF-CPAP on COVID-19 patients. Then 85 COVID-19 patients with ICU admission criteria over a 1-month period were studied upon FF-CPAP initiation for AHRF. FF-CPAP significantly decreased respiratory rate and increased SpO2. Thirty-six (43%) patients presented with respiratory indications for intubation prior to FF-CPAP initiation, and 13 (36%) of them improved without intubation. Overall, 31 patients (36%) improved with FF-CPAP alone and 17 patients (20%) did not require ICU admission. Patients with a respiratory rate > 32 breaths/min upon FF-CPAP initiation had a higher cumulative probability of intubation (p Conclusion Adding a filter to the Boussignac valve does not affect the delivered pressure but may variably increase the resistive load depending on the filter used. Clinical assessment suggests that FF-CPAP is a frugal solution to provide a ventilatory support and improve oxygenation to numerous patients suffering from AHRF in the context of a massive outbreak.
Published: 2021

21. Duration of diaphragmatic inactivity after endotracheal intubation of critically ill patients

Author: Jan O. Friedrich, Sebastian Dubo, Ewan C. Goligher, Leo M. A. Heunks, Michael C. Sklar, Fabiana Madotto, Michela Rauseo, Ibrahim Soliman, Ricard M. Artigas, Nuttapol Rittayamai, L. Felipe Damiani, Rémi Coudroy, Lu Chen, Irene Telias, Annemijn H. Jonkman, Guang-Qiang Chen, Laurent Brochard, Tài Pham, Martin Dres, Christer Sinderby, Intensive care medicine, ACS - Pulmonary hypertension & thrombosis, University of Toronto, St. Michael's Hospital, Università degli Studi di Milano, IRCCS Policlinico San Donato, VU University Medical Center [Amsterdam], Università degli Studi di Foggia - University of Foggia, Pontificia Universidad Católica de Chile (UC), Universidad de Concepción - University of Concepcion [Chile], Universidad de la frontera [Chile], Siriraj Hospital, Mahidol University, Mahidol University [Bangkok], Mount Sinai Health System, Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CIC - Poitiers, Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Università degli Studi di Foggia = University of Foggia (Unifg), HAL-SU, Gestionnaire, and Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: Male, Time Factors, [SDV.MHEP.PHY] Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], Sedation, medicine.medical_treatment, Critical Illness, Diaphragm, Diaphragmatic breathing, Critical Care and Intensive Care Medicine, Electrical activity of the diaphragm, 03 medical and health sciences, 0302 clinical medicine, Mechanical ventilation, Interquartile range, Severity of illness, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], Intubation, Intratracheal, Medicine, Intubation, Humans, Prospective Studies, Aged, Aged, 80 and over, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, lcsh:RC86-88.9, Middle Aged, Respiration, Artificial, 3. Good health, Diaphragm (structural system), Critical care, 030228 respiratory system, Anesthesia, Breathing, Female, medicine.symptom, Sedentary Behavior, business
Abstract: BackgroundIn patients intubated for mechanical ventilation, prolonged diaphragm inactivity could lead to weakness and poor outcome. Time to resume a minimal diaphragm activity may be related to sedation practice and patient severity.MethodsProspective observational study in critically ill patients. Diaphragm electrical activity (EAdi) was continuously recorded after intubation looking for resumption of a minimal level of diaphragm activity (beginning of the first 24 h period with median EAdi > 7 µV, a threshold based on literature and correlations with diaphragm thickening fraction). Recordings were collected until full spontaneous breathing, extubation, death or 120 h. A 1 h waveform recording was collected daily to identify reverse triggering.ResultsSeventy-five patients were enrolled and 69 analyzed (mean age ± standard deviation 63 ± 16 years). Reasons for ventilation were respiratory (55%), hemodynamic (19%) and neurologic (20%). Eight catheter disconnections occurred. The median time for resumption of EAdi was 22 h (interquartile range 0–50 h); 35/69 (51%) of patients resumed activity within 24 h while 4 had no recovery after 5 days. Late recovery was associated with use of sedative agents, cumulative doses of propofol and fentanyl, controlled ventilation and age (older patients receiving less sedation). Severity of illness, oxygenation, renal and hepatic function, reason for intubation were not associated with EAdi resumption. At least 20% of patients initiated EAdi with reverse triggering.ConclusionLow levels of diaphragm electrical activity are common in the early course of mechanical ventilation: 50% of patients do not recover diaphragmatic activity within one day. Sedatives are the main factors accounting for this delay independently from lung or general severity.Trial RegistrationClinicalTrials.gov (NCT02434016). Registered on April 27, 2015. First patients enrolled June 2015.
Published: 2021

22. Evolution Over Time of Ventilatory Management and Outcome of Patients With Neurologic Disease

Author: Tejerina E. E., Pelosi P., Robba C., Penuelas O., Muriel A., Barrios D., Frutos-Vivar F., Raymondos K., Du B., Thille A. W., Rios F., Gonzalez M., Del-Sorbo L., Marin M. D. C., Valle Pinheiro B., Soares M. A., Nin N., Maggiore S. M., Bersten A., Amin P., Cakar N., Young Suh G., Abroug F., Jibaja M., Matamis D., Ali Zeggwagh A., Sutherasan Y., Anzueto A., Esteban A, Fernando Ríos, Damian Violi, Marisol Rodríguez-Goñi, Roger Lamoglie, Fernando Villarejo, Norberto Tiribelli, Santiago Ilutovich, Matías Brizuela, Mariana Monllau, Fernando Saldarini, Silvina Borello, Alberto Marino, Mauricio Vinzio, Karina Bonasegla, Julián Hernández, María Belén Yapur, María Eugenia González, Sebastián E Mare, Judith Sagardía, Marco Bezzi, Cecilia Pereyra, Julian Strati, Daniel Vargas, Claudia Diaz, Pablo Gómez, Marcelo Palavecino, Graciela Elizabeth, Aguilera García, M Eugenia, Luis Pablo Cardonnet, Lisandro Betttini, Hernán Nuñez, Lucas Vallejo, Fernando Fernández, Jorge Arroyo, Daniel Duarte, Gerardo Filippa, Cayetano Galetti, Hernan Nunia, Fernando Lambert, Elisa Estenssoro, Marina Busico, Javier Horacio Álvarez, Alejandro Raimondi, Gustavo Badariotti, Martín Lugaro, Fernando Lipovestky, Alan Javier Zazu, Hugo Capponcelli, Patricia Vogl, Cristina Orlandi, Alejandro Gómez, Gustavo Jannello, Alejandro Risso, Leticia Rapetti, Guillermo Chiappero, Juan Domingo Fernández, Rodrigo E Gómez-Paz, Marcos Juan Zec, Pascual Valdez, Jorgelina Guyon, Ariel Chena, Sergio Lasdica, Martin Deheza, Schimdt Alejandra, Francisco Criado, Norma Beatriz Márquez, Pablo Desmery, José Luis Scapellato, Gonzalo Javier Ríos, Cristian Casabella, Jasmin Board, Andrew Davies, Andrew Bersten, Elisha Matheson, Amy Waters, John Santamaria, Jennifer Holmes, Cartan Costello, Manoj K Saxena, John Myburgh, Ellen Kinkel, Forbes McGain, Claire Cattigan, Allison Bone, Ian Seppelt, Leonie Weisbrodt, Cheryl Cuzner, Christopher MacIsaac, Deborah Barge, Tania Caf, Cameron Knott, Graeme Duke, Imogen Mitchell, Helen Rodgers, Rachel Whyte, Elisha Fulton, Alistair Nichol, Hergen Buscher, Priya Nair, Claire Reynolds, Simon J G Hockley, Ian Moore, Katherine Davidson, David Milliss, Raju Pusapati, Helen Wong, Jason Fletcher, Julie Smith, Paul Goldrick, Dianne Stephens, Jane Thomas, Anders Aneman, Sutrisno Gunawan, Tom Cowlam, George Lukas, Rick McAllister, Minka Springham, Joanne Sutton, Jeff Presneill, Tony Sutherland, Dianne Hill, Howard Connor, Jenny Dennett, Tim Coles, Freddy Sandy, Sando Chavarria, Marcelo Choque, Ronald Pairumani, Juan Guerra, Marco Antônio Soares Reis, José Carlos Versiani, Eduardo Fonseca Sad, Maria Aparecida Braga, Dinalva Aparecida Gomes, Fernando Antônio Botoni, Maurício Meireles Góes, Frederico Costa Val Barros, Rogério de Castro Pereira, Hugo Urbano, Valéria de Carvalho Magela, Aline Camile Yehia, Bruno Bonaccorsi Fernandino, Marco Antônio Ribeiro Leão, Rovílson Lara, Rubens Altair Amaral de Pádua, Janine Dias Alves, Aloísio Marques do Nascimento, Bruno do Valle Pinheiro, Carlos Alberto Studart Gomes, Marcelo Alcântara Holanda, Frederico Rodrigues Anselmo, Niall Ferguson, Neill Adhikari, Robert Fowler, Cheromi Sittambalam, Mehar-Un-Nisa Raja, Nicole Marinoff, Lauralyn McIntryre, Shawna Reddie, Laura Jones, Irene Watpool, Jeffrey Singh, Madison Dennis, Andrea Matte, Marc Lipkus, Ryan Albert, Andrew Steel, Emily Stern, Michael Miletin, Antonio Raso, Robyn Klages, Jan Friedrich, Orla Smith, Laura Wilson, Deborah Cook, Mark Bailey, Sangeeta Mehta, Stephen Lapinsky, Hannah Mathers, Cheryl Ethier, Stephanie Lubchansky, Samer Haj-Bakri, Dietrich Henzler, Lisa Julien, Luis Soto-Román, Juan Carlos Maurelia, César Antonio Maquilon, Luis Soto-Germani, Bin Du, Yan Kang, Bo Wang, Fachun Zhou, Fang Xu, Haibo Qiu, Yi Yang, Qingyuan Zhan, Bing Sun, Zhenjie Hu, Bin Yu, Xi Zhu, Yu Bai, Gang Li, Yi Li, Geng Zhang, Jianbiao Meng, Xiaobo Huang, Hong Pu, Daxing Yu, Chuanyun Qian, Wei Zhang, Yongjie Yin, Debiao Song, Yunxuan Yue, Zhengxuan Lv, Chengmin Yu, Qunmei Yao, Xue Wang, Yuan Xu, Wei He, Mian Chen, Zhihua Hu, Dongpo Jiang, Jian Huang, Wei Yu, Juanxian Gu, Yangong Chao, Zhixiang Li, Zhicheng Zhang, Wanxia Li, Zhenyang He, Jianguo Li, Chang Liu, Tiehe Qin, Shouhong Wang, Feng Li, Jun Jin, Jianhong Fu, Hongyang Xu, Hongyuan Lin, Jianying Guo, Yalin Liu, Jinghua Wang, Maoqin Li, Jiaqiong Li, Lei Chen, Qing Song, Liang Pan, Xianyao Wan, Jiuzhi Zhang, Weihai Yao, Yuhong Guo, Pang Wing Yan, Kelly Choy, Kwan Ming Chit, Patricia Leung, Chau Chin Man, Marco González, Ricardo Buitrago, Marcela Granados, Guillermo Ortiz, Cesar Enciso, Mario Gómez, Bladimir Alejandro Gil, Juan Pablo Sedano, Luis Fernando Castro Castro, Carlo Alberto Acosta, Marco Gonzalez, Francisco Molina, Camilo Pizarro, Mario Villabon, Carmelo Dueñas, Carlos Andrés Díaz, Nelson Fonseca, Rubén Camargo, Juan David Uribe, Hans-Henrik Bülow, Simona Beniczky, Jens Brushoj, Mikkel Præst, Birgitte Viebaek, Sine Wichman, Anette Mortensen, Susanne Andi Iversen, Bo Broberg, Edgard Luna, Manuel Jibaja, Leonardo Pazmiño, Katty Trelles, Fabricio Picoita, Gustavo Paredes, Vanesa Ramírez, Guillermo Falconí, Cristian Cevallos, Boris Villamagua, Marco Escobar, Freddy Sánchez, Miguel Llano, Miguel Lazcano, Ramiro Puetate, José Miguel Guerrero, Mijail Játiva, Myriam Montalvo, Franklin Villegas, Luis González Zambrano, Ronnie Mantilla, Gina Quinde, Andrea Gimenez, Luis Gonzalez Mosquera, Henry Caballero, María Fernanda García, Marcelo Ochoa, Soraya Puertas, Jackeline Coello, Mario Acosta, Medhat Soliman, Arnaud W Thille, Achille Kouatchet, Alain Mercat, Laurent Brochard, François Collet, Guillaume Marcotte, Pascal Beuret, Jean-Christophe M Richard, Gaëtan Bedunaeu, Pierre-Gildas Guitard, Fabien Soulis, Frédéric Bellec, Philippe Berger, Dorothée Carpentier, Benoit Veber, Salem Ould Zein, Géraldine Dessertaine, C Canevet, Fabien Grelon, Konstantinos Raymondos, Rolf Dembinski, Rolf Rossaint, Steffen Weber-Carstens, Christian Putensen, Maximillian Ragaller, Michael Quintel, Winfried Schubert, Thomas Bein, Heinrich Paulus, Walter Brandt, Lutz Pfeiffer, Silke Frenzel, Thoralf Kerner, P Kruska, Leila Eckholt, Joachim Hartung, Harald Fritz, Monika Holler, Johannes Busch, Andreas Viehöfer, Jens Buettner, Jörn Schlechtweg, Achim Lunkeit, Roland Schneider, Maria Wussow, Nils Marquardt, Christian Frenkel, Falk Hildebrandt, Tumbass Volker, Thomas Lipp, Cezar Mihailescu, Thomas Moellhoff, Thomas Steinke, Oliver Franke, Marcus Ruecker, Markus Schappacher, Steffen Appel, Heinz Kerger, Andreas Schwartz, Jan Dittmann, Jörg Haberkorn, Wolfgang Baier, Walter Seyde, Dimitros Matamis, Eleni Antoniadou, Pertsas Evangelos, Maria Giannakou, Zoltan Szentkereszty, Zsolt Molnar, Pravin Amin, Farhad N Kapadia, Nagarajan Ramakrishnan, Deepak Govil, Anitha Shenoy, Umesh G, Samir Sahu, Sheila Nainan Myatra, Subhash Kumar Todi, Sanjay Dhanuka, Mayur Patel, P Samaddar, Dhruva Chaudhry, Vivek Joshi, Srinivas Samavedam, Ankur Devendra Bhavsar, Prachee Sathe, Sujoy Mukherjee, Salvatore Maurizio Maggiore, Francesco Idone, Federica Antonicelli, Paolo Navalesi, Rosanna Vaschetto, Arianna Boggero, Rosalba Tufano, Michele Iannuzzi, Edoardo De Robertis, Romano Tetamo, Andrea Neville Cracchiolo, Antonio Braschi, Francesco Mojoli, Ilaria Curro', Mirko Belliato, Chiara Verga, Marta Ferrari, Erika Mannelli, Valerio Mangani, Giorgio Tulli, Francesca Frigieri, Armando Pedulla', Monica Rocco, Giorgia Citterio, Di Russo, Gaetano Perchiazzi, Loredana Pitagora, Antonio Pesenti, Michela Bombino, Davide Chiumello, Federica Tallarini, Serena Azzari, Antonina Pigna, Ivano Aprile, Marco Adversi, Antonio Corcione, Marianna Esposito, Annunziata Mattei, Vito Marco Ranieri, Rosario Urbino, Ilaria Maria Mastromauro, Antonino Giarratano, Maurizio Raineri Santi, Ambrogio Sansone, Younsuck Koh, Moo Suk Park, Je Hyeong Kim, Kyung Chan Kim, Hye Sook Choi, Yun Seong Kim, Jin Hwa Lee, Myung-Goo Lee, Won-Yeon Lee, Jin Young An, Gee Young Suh, Ki-Suck Jung, Asisclo J Villagómez Ortiz, César Cruz Lozano, Zalatiel Maycotte Luna, José Francisco López Baca, José Elizalde, Guillermo Cueto Robledo, Mario Alonso Treviño Salinas, Ricardo Martinez Zubieta, Claudia Olvera-Guzman, Marco Montes De Oca, Silvio A Ñamendys-Silva, José Salvador Martínez Cano, Jose Angel Baltazar Torres, Gustavo Morales Muñoz, Antonio Villa Delgado, Javier Ladape Martinez, Amine Ali Zeggwagh, Tarek Dendane, Abderrahim Azzouzi, Ahmed Sbihi, Wajdi Maazouzi, Mourad Amor, Charki Haimeur, Michael A Kuiper, Matty Koopmans, Uli Strauch, Dennis Bergmans, Serge Heines, Sylvia den Boer, Bas M Kors, Peter van der Voort, Paul J Dennesen, Bert Beishuizen, Ingrid van den Hul, Erna Alberts, Harry P P M Gelissen, Eduard Bootsma, Auke Reidinga, Kim Heus, Diane Mackle, Paul Young, Rachael Parke, Eileen Gilder, Jodi Brown, Lynette Newby, Catherine Simmonds, Jan Mehrtens, Seton Henderson, Tony Williams, Judi Tai, Chantal Hogan, Mary La Pine, John Durning, Sheree Gare, Troy Browne, Shirley Nelson, Jennifer Goodson, Julio Osorio, Chabu Coronado, Rollin Roldán Mori, Rosa Luz López Martínez, Adam Mikstacki, Barbara Tamowicz, Rui Moreno, Eduardo Almeida, Joana Silvestre, Heloisa Castro, Irene Aragão, Susana Alves Ferreira, Nelson Barros, Filomena Faria, Carlos André Correia Casado, Fausto Fialho Moura, Paulo Marcal, Ricardo Matos, Edward Nicolayenko, Mikhail Kirov, Andrey Yaroshetskiy, Andrei Piontek, Valery Subbotin, Yaseen Arabi, Olivia Dulfo, Chafrina Marie Olay, Edgardo E Tabhan, Nicolas Nin, Alfonso Muñoz, César Aragón, Ana Villagrá, Ainhoa Rosselló, Joan Maria Raurich, María Garitacelaya, Miguel Ángel González-Gallego, Francisco Ortuño, Miguel Fernández-Vivas, David Freire, Francisco Guerrero, Francisco Manzano, Juan Carlos, Alfredo Padrón, Pedro Rosa, Rafael Morales, Liliana Caipe, Maurizio Bottiroli, José María Nicolás, Marta Ugalde, Javier Ruiz, Lucia Capilla, Guillermo Muñiz, Jesús Sánchez-Ruiz, Javier Cebrián, Begoña Balerdi, Elena Parreño, Alvaro van Bommel, César Pérez-Calvo, Irene Dot, Javier Blanco, Raquel Manzanedo, José J Blanco, Daniel Fontaneda, Raúl González, Javier Díaz Domínguez, Alfonso Moreno, Antonio Reyes, Ian Carrasco, Itziar Mintegui, Rosa Sebastián, Javier García-Alonso, Carolina Lorencio, Josep Maria Sirvent, Patricia Jimeno, Miguel León, Pedro Galdos, Nuria Alonso, Julia López-Díaz, María Victoria de la Torre, Jorge Vidal Hernández, Nicolás Zamboschi, Francisco Lucena, Gemma Rialp, Raquel Montoiro, Victoria Goñi, María Ángeles Pena, Antonio Maestre, Marc Fabra, Jacinto Baena, Eva Benveniste, Susana Temprano, Jesús Sánchez, Carmen Campos, Sara Cabañes, María Elena Pérez-Losada, José Claudio Leo, Enrique Piacentini, María Del Carmen de la Torre, Laura Álvarez-Montero, Fernando Sánchez, Antonio Viñuales, Bernabé Álvarez, Javier Castañeda, Ángela Alonso, María Isabel Ruiz, Pedro Jesús Domínguez, Marcos Delgado, Eugenio Palazón, Antonio García-Jiménez, Rosa Álvaro, Clara Laplaza Eva Regidor, Enrique Maraví, José María Quiroga, Amalia Martínez de la Gandara, Cecilia Carbayo, María Luisa Navarrete, Manuel Valledor, Raquel Yano, José María Gutiérrez, Javier González-Robledo, Amparo Ferrandiz, Alberto Belenguer, Lidón Mateu, Laura Sayagues, María José Tolón, Nieves Franco, Elena Gallego, Félix Lacoma, Patricia Albert, Vicente Arraez, Mar Gobernado, Susana Moradillo, Carolina Gímenez-Esparza, Teresa Sánchez de Dios, Carlos Marian Crespo, Cecilia Hermosa, Federico Gordo, Genis Carrasco, María Ángeles Alonso, Alejandro Algora, Raúl de Pablo, Sofía García, Ana Carolina Caballero, José María Montón, Teresa Mut, Eva Manteiga, Alejandro de la Serna, Ana Esther Trujillo, Rafael Blancas, Inmaculada Vallverdú, José Manuel Serrano, Miquel Ferrer, Juan Diego Jiménez, Carlos Gallego, Dolores Vila, Luis Marina, Valentín Parra, Juan Ramón Cortés, Chen Chin-Ming, Ai-Chin Cheng, Fekri Abroug, Besbes Mohamed, Imed Chouchene, Mounir Bouaziz, Stambouli Neji, Islem Ouanes, Ayed Samia, Nahit Cakar, Ismail Kati, Ali Aydım Altunkan, Remzi Iscimen, Zafer Dogan, Bilge Çetin, Tayfun Adanir, Sabriye Guvenc, Unase Büyükkoçak, Antonio Anzueto, Ashley Ellis, Gary Kinasewitz, Allan Walkey, Phil Alkana, Gregory A Schmidt, Susan Gillen, Kathleen Lilli, Jennifer Twombley, Denice Wells, Larry Welder, Alejandro Arroliga, Alfredo Vasquez-Sandoval, Vincent John Scott, Craig Cernosek, Christopher Spradley, Dimple Tejwani, Sindhaghatta Venkatram, Gilda Diaz-Fuentes, Amber Monson, Anthony Saleh, Madhav Gudi, George Liziamma, Mohamed A Saad, Crissie De Spirito, Bryan Beatty, Samir Vermani, Crissie Despirito, Zaza Cohen, Amee Patrawalla, Samir Abdelhadi, Rupesh Vakil, Steven Y Chang, Brian Sherman, Rosanna Del Giudice, John Oropell, Timothy D Girard, Cayce Strength, Joyce Okahashi, Leanne Boehm, Matthew Kirchner, Erwin J Oei, Sebastian Circo, Nelson Medina, Mohammed Al-Jagbeer, V J Cardenas Jr, Smyth Smith, Shelby Sutton, Marcela Canola-Mazo, Tim Houlihan, Yogeet Kaur, Travis Parry, Craig A Piquette, Kerry Canady, Rahul Nanchal, Dana K Soetaert, Maria Del Mar Torres-Perez, Carlos Robles-Arias, William Rodriguez-Cintron, Mark Tidswell, Jennifer Germain, Lori-Ann Kozikowski, Erin Braden, Geneva Tatem, Javier Hurtado, Alberto Deicas, Daniel Weiss, Marta Beron, Román Garrido, Cristina Santos, Mario Cancela, Raúl Lombardi, Pedro Alzugaray, Jorge Gerez, Silvia Mareque, Graciela Franca, Oscar Cluzet, Edgardo Nuñez, Julio Pontet, Sergio Cáceres, Elias Caragna, Alberto Soler, Frank Torres, Gastón Pittini, Gabriel D Empaire, Stevens Salva, Fernando Pérez, Clara Pacheco, Zoraida Parra, Ingrid Von der Osten, Luis Williams, José Salinas, Do Danh Quynh, Pham Thi Van Anh, Nguyen Huu Hoang, Nghuyen Ba Tuan, RS: NUTRIM - R2 - Liver and digestive health, MUMC+: MA Arts Assistenten IC (9), Intensive Care, MUMC+: MA Medische Staf IC (9), Tejerina E.E., Pelosi P., Robba C., Penuelas O., Muriel A., Barrios D., Frutos-Vivar F., Raymondos K., Du B., Thille A.W., Rios F., Gonzalez M., Del-Sorbo L., Marin M.D.C., Valle Pinheiro B., Soares M.A., Nin N., Maggiore S.M., Bersten A., Amin P., Cakar N., Young Suh G., Abroug F., Jibaja M., Matamis D., Ali Zeggwagh A., Sutherasan Y., Anzueto A., Esteban A, and Fernando Ríos, Damian Violi, Marisol Rodríguez-Goñi, Roger Lamoglie, Fernando Villarejo, Norberto Tiribelli, Santiago Ilutovich, Matías Brizuela, Mariana Monllau, Fernando Saldarini, Silvina Borello, Alberto Marino, Norberto Tiribelli, Mauricio Vinzio, Karina Bonasegla, Julián Hernández, María Belén Yapur, María Eugenia González, Sebastián E Mare, Judith Sagardía, Marco Bezzi, Cecilia Pereyra, Julian Strati, Daniel Vargas, Claudia Diaz, Pablo Gómez, Marcelo Palavecino, Graciela Elizabeth, Aguilera García, M Eugenia, Luis Pablo Cardonnet, Lisandro Betttini, Hernán Nuñez, Lucas Vallejo, Fernando Fernández, Jorge Arroyo, Daniel Duarte, Gerardo Filippa, Cayetano Galetti, Hernan Nunia, Fernando Lambert, Elisa Estenssoro, Marina Busico, Fernando Villarejo, Javier Horacio Álvarez, Alejandro Raimondi, Gustavo Badariotti, Martín Lugaro, Fernando Lipovestky, Alan Javier Zazu, Hugo Capponcelli, Patricia Vogl, Cristina Orlandi, Alejandro Gómez, Gustavo Jannello, Alejandro Risso, Leticia Rapetti, Guillermo Chiappero, Juan Domingo Fernández, Rodrigo E Gómez-Paz, Marcos Juan Zec, Pascual Valdez, Jorgelina Guyon, Ariel Chena, Sergio Lasdica, Martin Deheza, Schimdt Alejandra, Francisco Criado, Norma Beatriz Márquez, Pablo Desmery, José Luis Scapellato, Gonzalo Javier Ríos, Cristian Casabella, Jasmin Board, Andrew Davies, Andrew Bersten, Elisha Matheson, Amy Waters, John Santamaria, Jennifer Holmes, Cartan Costello, Manoj K Saxena, John Myburgh, Ellen Kinkel, Forbes McGain, Claire Cattigan, Allison Bone, Ian Seppelt, Leonie Weisbrodt, Cheryl Cuzner, Christopher MacIsaac, Deborah Barge, Tania Caf, Cameron Knott, Graeme Duke, Imogen Mitchell, Helen Rodgers, Rachel Whyte, Elisha Fulton, Jasmin Board, Andrew Davies, Alistair Nichol, Hergen Buscher, Priya Nair, Claire Reynolds, Simon J G Hockley, Ian Moore, Katherine Davidson, David Milliss, Raju Pusapati, Helen Wong, Jason Fletcher, Julie Smith, Paul Goldrick, Dianne Stephens, Jane Thomas, Anders Aneman, Sutrisno Gunawan, Tom Cowlam, George Lukas, Rick McAllister, Minka Springham, Joanne Sutton, Jeff Presneill, Tony Sutherland, Dianne Hill, Howard Connor, Jenny Dennett, Tim Coles, Freddy Sandy, Sando Chavarria, Marcelo Choque, Ronald Pairumani, Juan Guerra, Marco Antônio Soares Reis, José Carlos Versiani, Eduardo Fonseca Sad, Maria Aparecida Braga, Dinalva Aparecida Gomes, Fernando Antônio Botoni, Maurício Meireles Góes, Frederico Costa Val Barros, Rogério de Castro Pereira, Hugo Urbano, Valéria de Carvalho Magela, Aline Camile Yehia, Bruno Bonaccorsi Fernandino, Marco Antônio Ribeiro Leão, Rovílson Lara, Rovílson Lara, Rubens Altair Amaral de Pádua, Janine Dias Alves, Aloísio Marques do Nascimento, Bruno do Valle Pinheiro, Carlos Alberto Studart Gomes, Marcelo Alcântara Holanda, Frederico Rodrigues Anselmo, Niall Ferguson, Neill Adhikari, Robert Fowler, Cheromi Sittambalam, Mehar-Un-Nisa Raja, Nicole Marinoff, Lauralyn McIntryre, Shawna Reddie, Laura Jones, Irene Watpool, Jeffrey Singh, Madison Dennis, Andrea Matte, Marc Lipkus, Ryan Albert, Andrew Steel, Emily Stern, Michael Miletin, Antonio Raso, Robyn Klages, Jan Friedrich, Orla Smith, Laura Wilson, Deborah Cook, Mark Bailey, Sangeeta Mehta, Stephen Lapinsky, Hannah Mathers, Cheryl Ethier, Stephanie Lubchansky, Samer Haj-Bakri, Dietrich Henzler, Lisa Julien, Luis Soto-Román, Juan Carlos Maurelia, César Antonio Maquilon, Luis Soto-Germani, Bin Du, Yan Kang, Bo Wang, Fachun Zhou, Fang Xu, Haibo Qiu, Yi Yang, Qingyuan Zhan, Bing Sun, Zhenjie Hu, Bin Yu, Xi Zhu, Yu Bai, Gang Li, Yi Li, Geng Zhang, Jianbiao Meng, Xiaobo Huang, Hong Pu, Bin Du, Daxing Yu, Chuanyun Qian, Wei Zhang, Yongjie Yin, Debiao Song, Yunxuan Yue, Zhengxuan Lv, Chengmin Yu, Qunmei Yao, Xue Wang, Yuan Xu, Wei He, Mian Chen, Zhihua Hu, Dongpo Jiang, Jian Huang, Wei Yu, Juanxian Gu, Yangong Chao, Zhixiang Li, Zhicheng Zhang, Wanxia Li, Zhenyang He, Jianguo Li, Chang Liu, Tiehe Qin, Shouhong Wang, Feng Li, Jun Jin, Jianhong Fu, Hongyang Xu, Hongyuan Lin, Jianying Guo, Yalin Liu, Jinghua Wang, Maoqin Li, Jiaqiong Li, Lei Chen, Qing Song, Liang Pan, Xianyao Wan, Jiuzhi Zhang, Weihai Yao, Yuhong Guo, Pang Wing Yan, Kelly Choy, Kwan Ming Chit, Patricia Leung, Chau Chin Man, Marco González, Ricardo Buitrago, Marcela Granados, Guillermo Ortiz, Cesar Enciso, Mario Gómez, Bladimir Alejandro Gil, Juan Pablo Sedano, Luis Fernando Castro Castro, Carlo Alberto Acosta, Marco Gonzalez, Francisco Molina, Camilo Pizarro, Mario Villabon, Carmelo Dueñas, Carlos Andrés Díaz, Nelson Fonseca, Rubén Camargo, Juan David Uribe, Hans-Henrik Bülow, Simona Beniczky, Jens Brushoj, Mikkel Præst, Birgitte Viebaek, Sine Wichman, Anette Mortensen, Susanne Andi Iversen, Bo Broberg, Edgard Luna, Manuel Jibaja, Leonardo Pazmiño, Katty Trelles, Fabricio Picoita, Gustavo Paredes, Vanesa Ramírez, Guillermo Falconí, Cristian Cevallos, Boris Villamagua, Marco Escobar, Freddy Sánchez, Miguel Llano, Miguel Lazcano, Ramiro Puetate, José Miguel Guerrero, Mijail Játiva, Myriam Montalvo, Franklin Villegas, Luis González Zambrano, Ronnie Mantilla, Gina Quinde, Andrea Gimenez, Luis Gonzalez Mosquera, Henry Caballero, María Fernanda García, Marcelo Ochoa, Soraya Puertas, Jackeline Coello, Mario Acosta, Medhat Soliman, Arnaud W Thille, Achille Kouatchet, Alain Mercat, Laurent Brochard, François Collet, Guillaume Marcotte, Pascal Beuret, Jean-Christophe M Richard, Gaëtan Bedunaeu, Pierre-Gildas Guitard, Fabien Soulis, Frédéric Bellec, Philippe Berger, Dorothée Carpentier, Benoit Veber, Salem Ould Zein, Géraldine Dessertaine, C Canevet, Fabien Grelon, Konstantinos Raymondos, Rolf Dembinski, Rolf Rossaint, Steffen Weber-Carstens, Christian Putensen, Maximillian Ragaller, Michael Quintel, Winfried Schubert, Thomas Bein, Heinrich Paulus, Walter Brandt, Lutz Pfeiffer, Silke Frenzel, Thoralf Kerner, P Kruska, Leila Eckholt, Joachim Hartung, Harald Fritz, Monika Holler, Johannes Busch, Andreas Viehöfer, Jens Buettner, Jörn Schlechtweg, Achim Lunkeit, Roland Schneider, Maria Wussow, Nils Marquardt, Christian Frenkel, Falk Hildebrandt, Tumbass Volker, Thomas Lipp, Cezar Mihailescu, Thomas Moellhoff, Thomas Steinke, Oliver Franke, Marcus Ruecker, Markus Schappacher, Steffen Appel, Heinz Kerger, Andreas Schwartz, Jan Dittmann, Jörg Haberkorn, Wolfgang Baier, Walter Seyde, Dimitros Matamis, Eleni Antoniadou, Pertsas Evangelos, Maria Giannakou, Zoltan Szentkereszty, Zsolt Molnar, Pravin Amin, Farhad N Kapadia, Nagarajan Ramakrishnan, Deepak Govil, Anitha Shenoy, Umesh G, Samir Sahu, Sheila Nainan Myatra, Subhash Kumar Todi, Sanjay Dhanuka, Mayur Patel, P Samaddar, Dhruva Chaudhry, Vivek Joshi, Srinivas Samavedam, Ankur Devendra Bhavsar, Prachee Sathe, Sujoy Mukherjee, Salvatore Maurizio Maggiore, Francesco Idone, Federica Antonicelli, Paolo Navalesi, Rosanna Vaschetto, Arianna Boggero, Rosalba Tufano, Michele Iannuzzi, Edoardo De Robertis, Romano Tetamo, Andrea Neville Cracchiolo, Antonio Braschi, Francesco Mojoli, Ilaria Curro', Mirko Belliato, Chiara Verga, Marta Ferrari, Erika Mannelli, Valerio Mangani, Giorgio Tulli, Francesca Frigieri, Armando Pedulla', Monica Rocco, Giorgia Citterio, Di Russo, Gaetano Perchiazzi, Loredana Pitagora, Antonio Pesenti, Michela Bombino, Davide Chiumello, Federica Tallarini, Serena Azzari, Antonina Pigna, Ivano Aprile, Marco Adversi, Antonio Corcione, Marianna Esposito, Annunziata Mattei, Vito Marco Ranieri, Rosario Urbino, Ilaria Maria Mastromauro, Antonino Giarratano, Maurizio Raineri Santi, Ambrogio Sansone, Younsuck Koh, Moo Suk Park, Je Hyeong Kim, Kyung Chan Kim, Hye Sook Choi, Yun Seong Kim, Jin Hwa Lee, Myung-Goo Lee, Won-Yeon Lee, Jin Young An, Gee Young Suh, Ki-Suck Jung, Asisclo J Villagómez Ortiz, César Cruz Lozano, Zalatiel Maycotte Luna, José Francisco López Baca, José Elizalde, Guillermo Cueto Robledo, Mario Alonso Treviño Salinas, Ricardo Martinez Zubieta, Claudia Olvera-Guzman, Marco Montes De Oca, Silvio A Ñamendys-Silva, José Salvador Martínez Cano, Jose Angel Baltazar Torres, Gustavo Morales Muñoz, Antonio Villa Delgado, Javier Ladape Martinez, Amine Ali Zeggwagh, Tarek Dendane, Abderrahim Azzouzi, Ahmed Sbihi, Wajdi Maazouzi, Mourad Amor, Charki Haimeur, Michael A Kuiper, Matty Koopmans, Uli Strauch, Dennis Bergmans, Serge Heines, Sylvia den Boer, Bas M Kors, Peter van der Voort, Paul J Dennesen, Bert Beishuizen, Ingrid van den Hul, Erna Alberts, Harry P P M Gelissen, Eduard Bootsma, Auke Reidinga, Jasmin Board, Andrew Davies, Kim Heus, Diane Mackle, Paul Young, Rachael Parke, Eileen Gilder, Jodi Brown, Lynette Newby, Catherine Simmonds, Jan Mehrtens, Seton Henderson, Tony Williams, Judi Tai, Chantal Hogan, Mary La Pine, John Durning, Sheree Gare, Troy Browne, Shirley Nelson, Jennifer Goodson, Julio Osorio, Chabu Coronado, Rollin Roldán Mori, Rosa Luz López Martínez, Adam Mikstacki, Barbara Tamowicz, Rui Moreno, Eduardo Almeida, Joana Silvestre, Heloisa Castro, Irene Aragão, Susana Alves Ferreira, Nelson Barros, Filomena Faria, Carlos André Correia Casado, Fausto Fialho Moura, Paulo Marcal, Ricardo Matos, Edward Nicolayenko, Mikhail Kirov, Andrey Yaroshetskiy, Andrei Piontek, Valery Subbotin, Yaseen Arabi, Olivia Dulfo, Chafrina Marie Olay, Edgardo E Tabhan, Nicolas Nin, Alfonso Muñoz, César Aragón, Ana Villagrá, Ainhoa Rosselló, Joan Maria Raurich, María Garitacelaya, Miguel Ángel González-Gallego, Francisco Ortuño, Miguel Fernández-Vivas, David Freire, Francisco Guerrero, Francisco Manzano, Juan Carlos, Alfredo Padrón, Pedro Rosa, Rafael Morales, Liliana Caipe, Maurizio Bottiroli, José María Nicolás, Marta Ugalde, Javier Ruiz, Lucia Capilla, Guillermo Muñiz, Jesús Sánchez-Ruiz, Javier Cebrián, Begoña Balerdi, Elena Parreño, Alvaro van Bommel, César Pérez-Calvo, Irene Dot, Javier Blanco, Raquel Manzanedo, José J Blanco, Daniel Fontaneda, Raúl González, Javier Díaz Domínguez, Alfonso Moreno, Antonio Reyes, Ian Carrasco, Itziar Mintegui, Rosa Sebastián, Javier García-Alonso, Carolina Lorencio, Josep Maria Sirvent, Patricia Jimeno, Miguel León, Pedro Galdos, Nuria Alonso, Julia López-Díaz, María Victoria de la Torre, Jorge Vidal Hernández, Nicolás Zamboschi, Francisco Lucena, Gemma Rialp, Raquel Montoiro, Victoria Goñi, María Ángeles Pena, Antonio Maestre, Marc Fabra, Jacinto Baena, Eva Benveniste, Susana Temprano, Jesús Sánchez, Carmen Campos, Sara Cabañes, María Elena Pérez-Losada, José Claudio Leo, Enrique Piacentini, María Del Carmen de la Torre, Laura Álvarez-Montero, Fernando Sánchez, Antonio Viñuales, Bernabé Álvarez, Javier Castañeda, Ángela Alonso, María Isabel Ruiz, Pedro Jesús Domínguez, Marcos Delgado, Eugenio Palazón, Antonio García-Jiménez, Rosa Álvaro, Clara Laplaza Eva Regidor, Enrique Maraví, José María Quiroga, Amalia Martínez de la Gandara, Cecilia Carbayo, María Luisa Navarrete, Manuel Valledor, Raquel Yano, José María Gutiérrez, Javier González-Robledo, Amparo Ferrandiz, Alberto Belenguer, Lidón Mateu, Laura Sayagues, María José Tolón, Nieves Franco, Elena Gallego, Félix Lacoma, Patricia Albert, Vicente Arraez, Mar Gobernado, Susana Moradillo, Carolina Gímenez-Esparza, Teresa Sánchez de Dios, Carlos Marian Crespo, Cecilia Hermosa, Federico Gordo, Genis Carrasco, María Ángeles Alonso, Alejandro Algora, Raúl de Pablo, Sofía García, Ana Carolina Caballero, José María Montón, Teresa Mut, Eva Manteiga, Alejandro de la Serna, Ana Esther Trujillo, Rafael Blancas, Inmaculada Vallverdú, José Manuel Serrano, Miquel Ferrer, Juan Diego Jiménez, Carlos Gallego, Dolores Vila, Luis Marina, Valentín Parra, Juan Ramón Cortés, Chen Chin-Ming, Ai-Chin Cheng, Fekri Abroug, Besbes Mohamed, Imed Chouchene, Mounir Bouaziz, Stambouli Neji, Islem Ouanes, Ayed Samia, Nahit Cakar, Ismail Kati, Ali Aydım Altunkan, Remzi Iscimen, Zafer Dogan, Bilge Çetin, Tayfun Adanir, Sabriye Guvenc, Unase Büyükkoçak, Antonio Anzueto, Ashley Ellis, Gary Kinasewitz, Allan Walkey, Phil Alkana, Gregory A Schmidt, Susan Gillen, Kathleen Lilli, Jennifer Twombley, Denice Wells, Larry Welder, Alejandro Arroliga, Alfredo Vasquez-Sandoval, Vincent John Scott, Craig Cernosek, Christopher Spradley, Dimple Tejwani, Sindhaghatta Venkatram, Gilda Diaz-Fuentes, Amber Monson, Anthony Saleh, Madhav Gudi, George Liziamma, Mohamed A Saad, Crissie De Spirito, Bryan Beatty, Samir Vermani, Crissie Despirito, Zaza Cohen, Amee Patrawalla, Samir Abdelhadi, Rupesh Vakil, Steven Y Chang, Brian Sherman, Rosanna Del Giudice, John Oropell, Timothy D Girard, Cayce Strength, Joyce Okahashi, Leanne Boehm, Matthew Kirchner, Ashley Ellis, Gary Kinasewitz, Erwin J Oei, Sebastian Circo, Nelson Medina, Mohammed Al-Jagbeer, V J Cardenas Jr, Smyth Smith, Shelby Sutton, Marcela Canola-Mazo, Tim Houlihan, Yogeet Kaur, Travis Parry, Craig A Piquette, Kerry Canady, Rahul Nanchal, Dana K Soetaert, Maria Del Mar Torres-Perez, Carlos Robles-Arias, William Rodriguez-Cintron, Mark Tidswell, Jennifer Germain, Lori-Ann Kozikowski, Erin Braden, Geneva Tatem, Javier Hurtado, Alberto Deicas, Daniel Weiss, Marta Beron, Román Garrido, Cristina Santos, Mario Cancela, Raúl Lombardi, Pedro Alzugaray, Jorge Gerez, Silvia Mareque, Graciela Franca, Oscar Cluzet, Edgardo Nuñez, Julio Pontet, Sergio Cáceres, Elias Caragna, Alberto Soler, Frank Torres, Gastón Pittini, Gabriel D Empaire, Stevens Salva, Fernando Pérez, Clara Pacheco, Zoraida Parra, Ingrid Von der Osten, Luis Williams, José Salinas, Do Danh Quynh, Pham Thi Van Anh, Nguyen Huu Hoang, Nghuyen Ba Tuan
Subjects: Male, medicine.medical_treatment, pulmonary complications, RESPIRATORY-DISTRESS-SYNDROME, Critical Care and Intensive Care Medicine, CASE-FATALITY, 0302 clinical medicine, Risk Factors, Brain Injuries, Traumatic, Multicenter Studies as Topic, Hospital Mortality, Prospective Studies, Simplified Acute Physiology Score, Stroke, POPULATION, Age Factors, ANEURYSMAL SUBARACHNOID HEMORRHAGE, Middle Aged, Hemorrhagic Stroke, Intensive Care Units, Observational Studies as Topic, Anesthesia, Breathing, Female, medicine.symptom, Ventilator Weaning, Cohort study, Adult, TRAUMATIC BRAIN-INJURY, Pressure support ventilation, mechanical ventilation, prognosis factors, ACUTE LUNG INJURY, 03 medical and health sciences, medicine, Humans, Aged, Ischemic Stroke, Mechanical ventilation, Noninvasive Ventilation, business.industry, MORTALITY, neurologic patients, Organ dysfunction, 030208 emergency & critical care medicine, Length of Stay, medicine.disease, TRENDS, Respiration, Artificial, 030228 respiratory system, Etiology, NEUROCRITICAL CARE, Nervous System Diseases, Tracheotomy, business
Abstract: OBJECTIVES: To describe the changes in ventilator management over time in patients with neurologic disease at ICU admission and to estimate factors associated with 28-day hospital mortality. DESIGN: Secondary analysis of three prospective, observational, multicenter studies. SETTING: Cohort studies conducted in 2004, 2010, and 2016. PATIENTS: Adult patients who received mechanical ventilation for more than 12 hours. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Among the 20,929 patients enrolled, we included 4,152 (20%) mechanically ventilated patients due to different neurologic diseases. Hemorrhagic stroke and brain trauma were the most common pathologies associated with the need for mechanical ventilation. Although volume-cycled ventilation remained the preferred ventilation mode, there was a significant (p < 0.001) increment in the use of pressure support ventilation. The proportion of patients receiving a protective lung ventilation strategy was increased over time: 47% in 2004, 63% in 2010, and 65% in 2016 (p < 0.001), as well as the duration of protective ventilation strategies: 406 days per 1,000 mechanical ventilation days in 2004, 523 days per 1,000 mechanical ventilation days in 2010, and 585 days per 1,000 mechanical ventilation days in 2016 (p < 0.001). There were no differences in the length of stay in the ICU, mortality in the ICU, and mortality in hospital from 2004 to 2016. Independent risk factors for 28-day mortality were age greater than 75 years, Simplified Acute Physiology Score II greater than 50, the occurrence of organ dysfunction within first 48 hours after brain injury, and specific neurologic diseases such as hemorrhagic stroke, ischemic stroke, and brain trauma. CONCLUSIONS: More lung-protective ventilatory strategies have been implemented over years in neurologic patients with no effect on pulmonary complications or on survival. We found several prognostic factors on mortality such as advanced age, the severity of the disease, organ dysfunctions, and the etiology of neurologic disease.
Published: 2021

23. Outcomes of weaning from mechanical ventilation after spinal cord injury: a systematic review and meta-analysis

Author: Dekel Stavi, Karen E. A. Burns, Fernando Vieira, Jacopo Garlasco, Jan O. Friedrich, Laurent Brochard, Yie Hui Lau, Annia Schreiber, Andrea Rigamonti, and Jeffrey M. Singh
Subjects: Mechanical ventilation, business.industry, medicine.medical_treatment, Meta-analysis, Anesthesia, medicine, Weaning, business, medicine.disease, Spinal cord injury
Published: 2021

24. Hyperoxemia and excess oxygen use in early acute respiratory distress syndrome: Insights from the LUNG SAFE study

Author: Madotto F, Rezoagli E, Pham T, Schmidt M, McNicholas B, Protti A, Panwar R, Bellani G, Fan E, van Haren F, Brochard L, Laffey JG, Antonio Pesenti, John G Laffey, Laurent Brochard, Andres Esteban, Luciano Gattinoni, Frank van Haren, Anders Larsson, Daniel F McAuley, Marco Ranieri, Gordon Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, Fernando Rios, T Sottiaux, P Depuydt, Fredy S Lora, Luciano Cesar Azevedo, Eddy Fan, Guillermo Bugedo, Haibo Qiu, Marcos Gonzalez, Juan Silesky, Vladimir Cerny, Jonas Nielsen, Manuel Jibaja, Tài Pham, Dimitrios Matamis, Jorge Luis Ranero, Pravin Amin, S M Hashemian, Kevin Clarkson, Giacomo Bellani, Kiyoyasu Kurahashi, Asisclo Villagomez, Amine Ali Zeggwagh, Leo M Heunks, Jon Henrik Laake, Jose Emmanuel Palo, Antero do Vale Fernandes, Dorel Sandesc, Yaasen Arabi, Vesna Bumbasierevic, Nicolas Nin, Jose A Lorente, Lise Piquilloud, Fekri Abroug, Lia McNamee, Javier Hurtado, Ed Bajwa, Gabriel Démpaire, Uhc Mother Theresa, Hektor Sula, Lordian Nunci, Alma Cani, Villa Maria, Alan Zazu, Christian Dellera, Carolina S Insaurralde, Risso V Alejandro, Julio Daldin, Mauricio Vinzio, Ruben O Fernandez, Luis P Cardonnet, Lisandro R Bettini, Mariano Carboni Bisso, Emilio M Osman, Mariano G Setten, Pablo Lovazzano, Javier Alvarez, Veronica Villar, Norberto C Pozo, Nicolas Grubissich, Gustavo A Plotnikow, Daniela N Vasquez, Santiago Ilutovich, Norberto Tiribelli, Ariel Chena, Carlos A Pellegrini, María G Saenz, Elisa Estenssoro, Matias Brizuela, Hernan Gianinetto, Pablo E Gomez, Valeria I Cerrato, Marco G Bezzi, Silvina A Borello, Flavia A Loiacono, Adriana M Fernandez, Serena Knowles, Claire Reynolds, Deborah M Inskip, Jennene J Miller, Jing Kong, Christina Whitehead, Shailesh Bihari, Aylin Seven, Amanda Krstevski, Helen J Rodgers, Rebecca T Millar, Toni E Mckenna, Irene M Bailey, Gabrielle C Hanlon, Anders Aneman, Joan M Lynch, Raman Azad, John Neal, Paul W Woods, Brigit L Roberts, Mark R Kol, Helen S Wong, Katharina C Riss, Thomas Staudinger, Xavier Wittebole, Caroline Berghe, Pierre A Bulpa, Alain M Dive, Rik Verstraete, Herve Lebbinck, Pieter Depuydt, Joris Vermassen, Philippe Meersseman, Helga Ceunen, Jonas I Rosa, Daniel O Beraldo, Claudio Piras, Adenilton M Rampinelli, Antonio P Nassar Jr, Sergio Mataloun, Marcelo Moock, Marlus M Thompson, Claudio H Gonçalves, Ana Carolina P Antônio, Aline Ascoli, Rodrigo S Biondi, Danielle C Fontenele, Danielle Nobrega, Vanessa M Sales, Suresh Shindhe, Dk Maizatul Aiman B Pg Hj Ismail, John Laffey, Francois Beloncle, Kyle G Davies, Rob Cirone, Venika Manoharan, Mehvish Ismail, Ewan C Goligher, Mandeep Jassal, Erin Nishikawa, Areej Javeed, Gerard Curley, Nuttapol Rittayamai, Matteo Parotto, Niall D Ferguson, Sangeeta Mehta, Jenny Knoll, Antoine Pronovost, Sergio Canestrini, Alejandro R Bruhn, Patricio H Garcia, Felipe A Aliaga, Pamela A Farías, Jacob S Yumha, Claudia A Ortiz, Javier E Salas, Alejandro A Saez, Luis D Vega, Eduardo F Labarca, Felipe T Martinez, Nicolás G Carreño, Pilar Lora, Haitao Liu, Ling Liu, Rui Tang, Xiaoming Luo, Youzhong An, Huiying Zhao, Yan Gao, Zhe Zhai, Zheng L Ye, Wei Wang, Wenwen Li, Qingdong Li, Ruiqiang Zheng, Wenkui Yu, Juanhong Shen, Xinyu Li, Tao Yu, Weihua Lu, Ya Q Wu, Xiao B Huang, Zhenyang He, Yuanhua Lu, Hui Han, Fan Zhang, Renhua Sun, Hua X Wang, Shu H Qin, Bao H Zhu, Jun Zhao, Jian Liu, Bin Li, Jing L Liu, Fa C Zhou, Qiong J Li, Xing Y Zhang, Zhou Li-Xin, Qiang Xin-Hua, Liangyan Jiang, Yuan N Gao, Xian Y Zhao, Yuan Y Li, Xiao L Li, Chunting Wang, Qingchun Yao, Rongguo Yu, Kai Chen, Huanzhang Shao, Bingyu Qin, Qing Q Huang, Wei H Zhu, Ai Y Hang, Ma X Hua, Yimin Li, Yonghao Xu, Yu D Di, Long L Ling, Tie H Qin, Shou H Wang, Junping Qin, Yi Han, Suming Zhou, Monica P Vargas, Juan I Silesky Jimenez, Manuel A González Rojas, Jaime E Solis-Quesada, Christian M Ramirez-Alfaro, Jan Máca, Peter Sklienka, Jakob Gjedsted, Aage Christiansen, Boris G Villamagua, Miguel Llano, Philippe Burtin, Gautier Buzancais, Pascal 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Mohammadreza Hashemian, Hamidreza Jamaati, Farshad Heidari, Edel A Meaney, Alistair Nichol, Karl M Knapman, Donall O'Croinin, Eimhin S Dunne, Dorothy M Breen, Kevin P Clarkson, Rola F Jaafar, Rory Dwyer, Fahd Amir, Olaitan O Ajetunmobi, Aogan C O'Muircheartaigh, Colin S Black, Nuala Treanor, Daniel V Collins, Wahid Altaf, Gianluca Zani, Maurizio Fusari, Savino Spadaro, Carlo A Volta, Romano Graziani, Barbara Brunettini, Salvatore Palmese, Paolo Formenti, Michele Umbrello, Andrea Lombardo, Elisabetta Pecci, Marco Botteri, Monica Savioli, Alessandro Protti, Alessia Mattei, Lorenzo Schiavoni, Andrea Tinnirello, Manuel Todeschini, Antonino Giarratano, Andrea Cortegiani, Sara Sher, Anna Rossi, Massimo M Antonelli, Luca M Montini, Paolo Casalena, Sergio Scafetti, Giovanna Panarello, Giovanna Occhipinti, Nicolò Patroniti, Matteo Pozzi, Roberto R Biscione, Michela M Poli, Ferdinando Raimondi, Daniela Albiero, Giulia Crapelli, Eduardo Beck, Vincenzo Pota, Vincenzo Schiavone, Alexandre Molin, Fabio Tarantino, Giacomo Monti, Elena Frati, Lucia Mirabella, Gilda Cinnella, Tommaso Fossali, Riccardo Colombo, Pierpaolo Terragni Ilaria Pattarino, Francesco Mojoli, Antonio Braschi, Erika E Borotto, Andrea N Cracchiolo, Daniela M Palma, Francesco Raponi, Giuseppe Foti, Ettore R Vascotto, Andrea Coppadoro, Luca Brazzi, Leda Floris, Giorgio A Iotti, Aaron Venti, Osamu Yamaguchi, Shunsuke Takagi, Hiroki N Maeyama, Eizo Watanabe, Yoshihiro Yamaji, Kazuyoshi Shimizu, Kyoko Shiozaki, Satoru Futami, Sekine Ryosuke, Koji Saito, Yoshinobu Kameyama, Keiko Ueno, Masayo Izawa, Nao Okuda, Hiroyuki Suzuki, Tomofumi Harasawa, Michitaka Nasu, Tadaaki Takada, Fumihito Ito, Shin-Nunomiya Kansuke-Koyama, Toshikazu Abe, Kohkichi Andoh, Kohei Kusumoto, Akira Hirata, Akihiro Takaba, Hiroyasu Kimura, Shuhei Matsumoto, Ushio Higashijima, Hiroyuki Honda, Nobumasa Aoki, Hiroshi Imai, Yasuaki Ogino, Ichiko Mizuguchi, Kazuya Ichikado, Kenichi Nitta, Katsunori Mochizuki, Tomoaki Hashida, Hiroyuki Tanaka, Tomoyuki Nakamura, Daisuke Niimi, Takeshi Ueda, Yozo Kashiwa, Akinori Uchiyama, Olegs Sabelnikovs, Peteris Oss, Youssef Haddad, Kong Y Liew, Silvio A Ñamendys-Silva, Yves D Jarquin-Badiola, Luis A Sanchez-Hurtado, Saira S Gomez-Flores, Maria C Marin, Asisclo J Villagomez, Jordana S Lemus, Jonathan M Fierro, Mavy Ramirez Cervantes, Francisco Javier Flores Mejia, Dulce Dector, Dulce M Dector, Daniel R Gonzalez, Claudia R Estrella, Jorge R Sanchez-Medina, Alvaro Ramirez-Gutierrez, Fernando G George, Janet S Aguirre, Juan A Buensuseso, Manuel Poblano, Tarek Dendane, Hicham Balkhi, Mina Elkhayari, Nacer Samkaoui, Hanane Ezzouine, Abdellatif Benslama Mourad Amor, Wajdi Maazouzi, Nedim Cimic, Oliver Beck, Monique M Bruns, Jeroen A Schouten, Myra-Rinia, Monique Raaijmakers, Hellen M Van Wezel, Serge J Heines, Ulrich Strauch, Marc P Buise, Fabienne D Simonis, Marcus J Schultz, Jennifer C Goodson, Troy S Browne, Leanlove Navarra, Anna Hunt, Robyn A Hutchison, Mathew B Bailey, Lynette Newby, 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Alonso, Rosa S Alda, Ángela Algaba, Gonzalo Navarro, Enrique Cereijo, Esther Diaz-Rodriguez, Diego Pastor Marcos, Laura Alvarez Montero, Luis Herrera Para, Roberto Jimenez Sanchez, Miguel Angel Blasco Navalpotro, Ricardo Diaz Abad, Raquel Montiel Gonz Á Lez, D Á Cil Parrilla Toribio, Alejandro G Castro, Maria Jose D Artiga, Oscar Penuelas, Tomas P Roser, Moreno F Olga, Elena Gallego Curto, Rocío Manzano Sánchez, Vallverdu P Imma, Garcia M Elisabet, Laura Claverias, Monica Magret, Ana M Pellicer, Lucia L Rodriguez, Jesús Sánchez-Ballesteros, Ángela González-Salamanca, Antonio G Jimenez, Francisco P Huerta, Juan Carlos J Sotillo Diaz, Esther Bermejo Lopez, David D Llinares Moya, Alec A Tallet Alfonso, Palazon Sanchez Eugenio Luis, Palazon Sanchez Cesar, Sánchez I Rafael, Corcoles G Virgilio, Noelia N Recio, Richard O Adamsson, Christian C Rylander, Bernhard Holzgraefe, Lars M Broman, Joanna Wessbergh, Linnea Persson, Fredrik Schiöler, Hans Kedelv, Anna Oscarsson Tibblin, Henrik Appelberg, Lars Hedlund, Johan Helleberg, Karin E Eriksson, Rita Glietsch, Niklas Larsson, Ingela Nygren, Silvia L Nunes, Anna-Karin Morin, Thomas Kander, Anne Adolfsson, Hervé O Zender, Corinne Leemann-Refondini, Souheil Elatrous, Slaheddine Bouchoucha, Imed Chouchene, Islem Ouanes, Asma Ben Souissi, Salma Kamoun, Oktay Demirkiran, Mustafa Aker, Emre Erbabacan, Ilkay Ceylan, Nermin Kelebek Girgin, Menekse Ozcelik, Necmettin Ünal, Basak Ceyda Meco, Onat O Akyol, Suleyman S Derman, Barry Kennedy, Ken Parhar, Latha Srinivasa, Danny McAuley, Phil Hopkins, Clare Mellis, Vivek Kakar, Dan Hadfield, Andre Vercueil, Kaushik Bhowmick, Sally K Humphreys, Andrew Ferguson, Raymond Mckee, Ashok S Raj, Danielle A Fawkes, Philip Watt, Linda Twohey, Rajeev R JhaMatthew Thomas, Alex Morton, Varsha Kadaba, Mark J Smith, Anil P Hormis, Santhana G Kannan, Miriam Namih, Henrik Reschreiter, Julie Camsooksai, Alek Kumar, Szabolcs Rugonfalvi, Christopher Nutt, Orla O'Neill, Colette Seasman, Ged Dempsey, Christopher J Scott, Helen E Ellis, Stuart Mckechnie, Paula J Hutton, Nora N Di Tomasso, Michela N Vitale, Ruth O Griffin, Michael N Dean, Julius H Cranshaw, Emma L Willett, Nicholas Ioannou, Sarah Gillis, Peter Csabi, Rosaleen Macfadyen, Heidi Dawson, Pieter D Preez, Alexandra J Williams, Owen Boyd, Laura Ortiz-Ruiz De Gordoa, Jon Bramall, Sophie Symmonds, Simon K Chau, Tim Wenham, Tamas Szakmany, Piroska Toth-Tarsoly, Katie H McCalman, Peter Alexander, Lorraine Stephenson, Thomas Collyer, Rhiannon Chapman, Raphael Cooper, Russell M Allan, Malcolm Sim, David W Wrathall, Donald A Irvine, Kim S Zantua, John C Adams, Andrew J Burtenshaw, Gareth P Sellors, Ingeborg D Welters, Karen E Williams, Robert J Hessell, Matthew G Oldroyd, Ceri E Battle, Suresh Pillai, Istvan Kajtor, Mageswaran Sivashanmugavel, Sinead C O'Kane, Adrian Donnelly, Aniko D Frigyik, Jon P Careless, Martin M May, Richard Stewart, T John Trinder, Samantha J Hagan, Matt P Wise, Jade M Cole, Caroline C MacFie, Anna T Dowling, Nicolás Nin, Edgardo Nuñez, Gustavo Pittini, Ruben Rodriguez, María C Imperio, Cristina Santos, Ana G França, Alejandro Ebeid, Alberto Deicas, Carolina Serra, Aditya Uppalapati, Ghassan Kamel, Valerie M Banner-Goodspeed, Jeremy R Beitler, Satyanarayana Reddy Mukkera, Shreedhar Kulkarni, Jarone Lee, Tomaz Mesar, John O Shinn 3rd, Dina Gomaa, Christopher Tainter, Dale J Yeatts, Jessica Warren, Michael J Lanspa, Russel R Miller, Colin K Grissom, LUNG SAFE Investigators and the ESICM Trials Group, Samuel M Brown, Philippe R Bauer, Ryan J Gosselin, Barrett T Kitch, Jason E Cohen, Scott H Beegle, Renaud M Gueret, Aiman Tulaimat, Shazia Choudry, William Stigler, Hitesh Batra, Nidhi G Huff, Keith D Lamb, Trevor W Oetting, Nicholas M Mohr, Claine Judy, Shigeki Saito, Fayez M Kheir, Fayez Kheir, Adam B Schlichting, Angela Delsing, Daniel R Crouch, Mary Elmasri, Dina Ismail, Kyle R Dreyer, Thomas C Blakeman, Rebecca M Baron, Carolina Quintana Grijalba, Peter C Hou, Raghu Seethala, Imo Aisiku, Galen Henderson, Gyorgy Frendl, Sen-Kuang Hou, Robert L Owens, Ashley Schomer, Vesna Bumbasirevic, Bojan Jovanovic, Maja Surbatovic, Milic Veljovic, Madotto, F., Rezoagli, E., Pham, T., Schmidt, M., Mcnicholas, B., Protti, A., Panwar, R., Bellani, G., Fan, E., Van Haren, F., Brochard, L., Laffey, J. 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N., Ilutovich, S., Tiribelli, N., Chena, A., Pellegrini, C. A., Saenz, M. G., Estenssoro, E., Brizuela, M., Gianinetto, H., Gomez, P. E., Cerrato, V. I., Bezzi, M. G., Borello, S. A., Loiacono, F. A., Fernandez, A. M., Knowles, S., Reynolds, C., Inskip, D. M., Miller, J. J., Kong, J., Whitehead, C., Bihari, S., Seven, A., Krstevski, A., Rodgers, H. J., Millar, R. T., Mckenna, T. E., Bailey, I. M., Hanlon, G. C., Aneman, A., Lynch, J. M., Azad, R., Neal, J., Woods, P. W., Roberts, B. L., Kol, M. R., Wong, H. S., Riss, K. C., Staudinger, T., Wittebole, X., Berghe, C., Bulpa, P. A., Dive, A. M., Verstraete, R., Lebbinck, H., Vermassen, J., Meersseman, P., Ceunen, H., Rosa, J. I., Beraldo, D. O., Piras, C., Rampinelli, A. M., Nassar, A. P., Mataloun, S., Moock, M., Thompson, M. M., Goncalves, C. H., Antonio, A. C. P., Ascoli, A., Biondi, R. S., Fontenele, D. C., Nobrega, D., Sales, V. M., Shindhe, S., Pg Hj Ismail, D. M. A. B., Laffey, J., Beloncle, F., Davies, K. G., Cirone, R., Manoharan, V., Ismail, M., Goligher, E. C., Jassal, M., Nishikawa, E., Javeed, A., Curley, G., Rittayamai, N., Parotto, M., Ferguson, N. D., Mehta, S., Knoll, J., Pronovost, A., Canestrini, S., Bruhn, A. R., Garcia, P. H., Aliaga, F. A., Farias, P. A., Yumha, J. S., Ortiz, C. A., Salas, J. E., Saez, A. A., Vega, L. D., Labarca, E. F., Martinez, F. T., Carreno, N. G., Lora, P., Liu, H., Liu, L., Tang, R., Luo, X., An, Y., Zhao, H., Gao, Y., Zhai, Z., Ye, Z. L., Wang, W., Li, W., Li, Q., Zheng, R., Yu, W., Shen, J., Li, X., Yu, T., Lu, W., Wu, Y. Q., Huang, X. B., He, Z., Lu, Y., Han, H., Zhang, F., Sun, R., Wang, H. X., Qin, S. H., Zhu, B. H., Zhao, J., Liu, J., Li, B., Liu, J. L., Zhou, F. C., Li, Q. J., Zhang, X. Y., Li-Xin, Z., Xin-Hua, Q., Jiang, L., Gao, Y. N., Zhao, X. Y., Li, Y. Y., Li, X. L., Wang, C., Yao, Q., Yu, R., Chen, K., Shao, H., Qin, B., Huang, Q. Q., Zhu, W. H., Hang, A. Y., Hua, M. X., Li, Y., Xu, Y., Di, Y. D., Ling, L. L., Qin, T. H., Wang, S. 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M., Rigaud, J. -P., Duranteau, J., Harrois, A., Chabanne, R., Marin, J., Bigot, C., Thibault, S., Ghazi, M., Boukhazna, M., Zein, S. O., Richecoeur, J. R., Combaux, D. M., Grelon, F., Le Moal, C., Sauvadet, E. P., Robine, A., Lemiale, V., Reuter, D., Dres, M., Demoule, A., Goldgran-Toledano, D., Baboi, L., Guerin, C., Lohner, R., Krassler, J., Schafer, S., Zacharowski, K. D., Meybohm, P., Reske, A. W., Simon, P., Hopf, H. -B. F., Schuetz, M., Baltus, T., Papanikolaou, M. N., Papavasilopoulou, T. G., Zacharas, G. A., Ourailogloy, V., Mouloudi, E. K., Massa, E. V., Nagy, E. O., Stamou, E. E., Kiourtzieva, E. V., Oikonomou, M. A., Avila, L. E., Cortez, C. A., Citalan, J. E., Jog, S. A., Sable, S. D., Shah, B., Gurjar, M., Baronia, A. K., Memon, M., Muthuchellappan, R., Ramesh, V. J., Shenoy, A., Unnikrishnan, R., Dixit, S. B., Rhayakar, R. V., Ramakrishnan, N., Bhardwaj, V. K., Mahto, H. L., Sagar, S. V., Palaniswamy, V., Ganesan, D., Jamaati, H., Heidari, F., Meaney, E. A., Nichol, A., Knapman, K. M., O'Croinin, D., Dunne, E. S., Breen, D. M., Clarkson, K. P., Jaafar, R. F., Dwyer, R., Amir, F., Ajetunmobi, O. O., O'Muircheartaigh, A. C., Black, C. S., Treanor, N., Collins, D. V., Altaf, W., Zani, G., Fusari, M., Spadaro, S., Volta, C. A., Graziani, R., Brunettini, B., Palmese, S., Formenti, P., Umbrello, M., Lombardo, A., Pecci, E., Botteri, M., Savioli, M., Mattei, A., Schiavoni, L., Tinnirello, A., Todeschini, M., Giarratano, A., Cortegiani, A., Sher, S., Rossi, A., Antonelli, M. M., Montini, L. M., Casalena, P., Scafetti, S., Panarello, G., Occhipinti, G., Patroniti, N., Pozzi, M., Biscione, R. R., Poli, M. M., Raimondi, F., Albiero, D., Crapelli, G., Beck, E., Pota, V., Schiavone, V., Molin, A., Tarantino, F., Monti, G., Frati, E., Mirabella, L., Cinnella, G., Fossali, T., Colombo, R., Pattarino, P. T. I., Mojoli, F., Braschi, A., Borotto, E. E., Cracchiolo, A. N., Palma, D. M., Raponi, F., Foti, G., Vascotto, E. R., Coppadoro, A., Brazzi, L., Floris, L., Iotti, G. A., Venti, A., Yamaguchi, O., Takagi, S., Maeyama, H. N., Watanabe, E., Yamaji, Y., Shimizu, K., Shiozaki, K., Futami, S., Ryosuke, S., Saito, K., Kameyama, Y., Ueno, K., Izawa, M., Okuda, N., Suzuki, H., Harasawa, T., Nasu, M., Takada, T., Ito, F., Shin-Nunomiya, Andoh, K., Kusumoto, K., Hirata, A., Takaba, A., Kimura, H., Kansuke-Koyama, Abe, T., Honda, H., Aoki, N., Imai, H., Ogino, Y., Mizuguchi, I., Ichikado, K., Nitta, K., Mochizuki, K., Hashida, T., Tanaka, H., Nakamura, T., Niimi, D., Ueda, T., Kashiwa, Y., Uchiyama, A., Sabelnikovs, O., Oss, P., Haddad, Y., Liew, K. Y., Namendys-Silva, S. A., Jarquin-Badiola, Y. D., Sanchez-Hurtado, L. A., Gomez-Flores, S. S., Marin, M. C., Villagomez, A. J., Lemus, J. S., Fierro, J. M., Cervantes, M. R., Mejia, F. J. F., Dector, D., Dector, D. M., Gonzalez, D. R., Estrella, C. R., Sanchez-Medina, J. R., Ramirez-Gutierrez, A., George, F. G., Aguirre, J. S., Buensuseso, J. A., Poblano, M., Dendane, T., Balkhi, H., Elkhayari, M., Samkaoui, N., Ezzouine, H., Amor, A. B. M., Maazouzi, W., Cimic, N., Beck, O., Bruns, M. M., Schouten, J. A., Myra-Rinia, Van Wezel, H. M., Heines, S. J., Strauch, U., Buise, M. P., Simonis, F. D., Schultz, M. J., Goodson, J. C., Browne, T. S., Raaijmakers, M., Hunt, A., Hutchison, R. A., Bailey, M. B., Newby, L., Mcarthur, C., Kalkoff, M., Mcleod, A., Casement, J., Hacking, D. J., Andersen, F. H., Dolva, M. S., Barratt-Due, A., Noremark, K. A. L., Soreide, E., Sjobo, B. A., Guttormsen, A. B., Leon Yoshido, H. H., Aguilar, R. Z., Montes Oscanoa, F. A., Alisasis, A. U., Robles, J. B., Pasanting-Lim, R. A. B., Tan, B. C., Andruszkiewicz, P., Jakubowska, K., Coxo, C. M., Alvarez, A. M., Oliveira, B. S., Montanha, G. M., Barros, N. C., Pereira, C. S., Messias, A. M., Monteiro, J. M., Araujo, A. M., Catorze, N. T., Marum, S. M., Bouw, M. J., Gomes, R. M., Brito, V. A., Castro, S., Estilita, J. M., Barros, F. M., Serra, I. M., Martinho, A. M., Tomescu, D. R., Marcu, A., Bedreag, O. H., Papurica, M., Corneci, D. E., Negoita, S. I., Grigoriev, E., Gritsan, A. I., Gazenkampf, A. A., Almekhlafi, G., Albarrak, M. M., Mustafa, G. M., Maghrabi, K. A., Salahuddin, N., Aisa, T. M., Al Jabbary, A. S., Tabhan, E., Arabi, Y. M., Trinidad, O. A., Al Dorzi, H. M., Tabhan, E. E., Bolon, S., Smith, O., Mancebo, J., Aguirre-Bermeo, H., Lopez-Delgado, J. C., Esteve, F., Rialp, G., Forteza, C., De Haro, C., Artigas, A., Albaiceta, G. M., De Cima-Iglesias, S., Seoane-Quiroga, L., Ceniceros-Barros, A., Ruiz-Aguilar, A. L., Claraco-Vega, L. M., Soler, J. A., Del Carmen Lorente, M., Hermosa, C., Gordo, F., Miryam-Prieto-Gonzalez, Perez, M. P., Perez, C. P., Allue, R. M., Roche-Campo, F., Ibanez-Santacruz, M., Susana-Temprano, De Pablo, R., Gomez, P. R. A., Ruiz, S. R., Moles, S. I., Jurado, Mª. T., Arizmendi, A., Piacentini, E. A., Franco, N., Honrubia, T., Cheng, M. P., Losada, E. P., Javier-Blanco, Pintado, M. C., Cazorla-Barranquero, F. G., Alonso, J. G., Alda, R. S., Algaba, A., Navarro, G., Cereijo, E., Diaz-Rodriguez, E., Marcos, D. P., Montero, L. A., Para, L. H., Sanchez, R. J., Navalpotro, M. A. B., Abad, R. D., Gonz A Lez, R. M., Toribio, D. A. C. P., Castro, A. G., Artiga, M. J. D., Penuelas, O., Roser, T. P., Olga, M. F., Curto, E. G., Sanchez, R. M., Imma, V. P., Elisabet, G. M., Claverias, L., Magret, M., Pellicer, A. M., Rodriguez, L. L., Sanchez-Ballesteros, J., Gonzalez-Salamanca, A., Jimenez, A. G., Huerta, F. P., Sotillo Diaz, J. C. J., Lopez, E. B., Llinares Moya, D. D., Tallet Alfonso, A. A., Luis, P. S. E., Cesar, P. S., Rafael, S. I., Virgilio, C. G., Recio, N. N., Adamsson, R. O., Rylander, C. C., Holzgraefe, B., Broman, L. M., Wessbergh, J., Persson, L., Schioler, F., Kedelv, H., Tibblin, A. O., Appelberg, H., Hedlund, L., Helleberg, J., Eriksson, K. E., Glietsch, R., Larsson, N., Nygren, I., Nunes, S. L., Morin, A. -K., Kander, T., Adolfsson, A., Zender, H. O., Leemann-Refondini, C., Elatrous, S., Bouchoucha, S., Chouchene, I., Ouanes, I., Souissi, A. B., Kamoun, S., Demirkiran, O., Aker, M., Erbabacan, E., Ceylan, I., Girgin, N. K., Ozcelik, M., Unal, N., Meco, B. C., Akyol, O. O., Derman, S. S., Kennedy, B., Parhar, K., Srinivasa, L., Hopkins, P., Mellis, C., Kakar, V., Hadfield, D., Vercueil, A., Bhowmick, K., Humphreys, S. K., Ferguson, A., Mckee, R., Raj, A. S., Fawkes, D. A., Watt, P., Twohey, L., Jhamatthew Thomas, R. R., Morton, A., Kadaba, V., Smith, M. J., Hormis, A. P., Kannan, S. G., Namih, M., Reschreiter, H., Camsooksai, J., Kumar, A., Rugonfalvi, S., Nutt, C., O'Neill, O., Seasman, C., Dempsey, G., Scott, C. J., Ellis, H. E., Mckechnie, S., Hutton, P. J., Di Tomasso, N. N., Vitale, M. N., Griffin, R. O., Dean, M. N., Cranshaw, J. H., Willett, E. L., Ioannou, N., Gillis, S., Csabi, P., Macfadyen, R., Dawson, H., Preez, P. D., Williams, A. J., Boyd, O., De Gordoa, L. O. -R., Bramall, J., Symmonds, S., Chau, S. K., Wenham, T., Szakmany, T., Toth-Tarsoly, P., Mccalman, K. H., Alexander, P., Stephenson, L., Collyer, T., Chapman, R., Cooper, R., Allan, R. M., Sim, M., Wrathall, D. W., Irvine, D. A., Zantua, K. S., Adams, J. C., Burtenshaw, A. J., Sellors, G. P., Welters, I. D., Williams, K. E., Hessell, R. J., Oldroyd, M. G., Battle, C. E., Pillai, S., Kajtor, I., Sivashanmugavel, M., O'Kane, S. C., Donnelly, A., Frigyik, A. D., Careless, J. P., May, M. M., Stewart, R., Trinder, T. J., Hagan, S. J., Wise, M. P., Cole, J. M., Macfie, C. C., Dowling, A. T., Nunez, E., Pittini, G., Rodriguez, R., Imperio, M. C., Santos, C., Franca, A. G., Ebeid, A., Deicas, A., Serra, C., Uppalapati, A., Kamel, G., Banner-Goodspeed, V. M., Beitler, J. R., Mukkera, S. R., Kulkarni, S., Lee, J., Mesar, T., Shinn, J. O., Gomaa, D., Tainter, C., Yeatts, D. J., Warren, J., Lanspa, M. J., Miller, R. R., Grissom, C. K., Brown, S. M., Bauer, P. R., Gosselin, R. J., Kitch, B. T., Cohen, J. E., Beegle, S. H., Gueret, R. M., Tulaimat, A., Choudry, S., Stigler, W., Batra, H., Huff, N. G., Lamb, K. D., Oetting, T. W., Mohr, N. M., Judy, C., Saito, S., Kheir, F. M., Kheir, F., Schlichting, A. B., Delsing, A., Crouch, D. R., Elmasri, M., Ismail, D., Dreyer, K. R., Blakeman, T. C., Baron, R. M., Grijalba, C. Q., Hou, P. C., Seethala, R., Aisiku, I., Henderson, G., Frendl, G., Hou, S. -K., Owens, R. L., Schomer, A., Bumbasirevic, V., Jovanovic, B., Surbatovic, M., Veljovic, M., UCL - SSS/IREC/MEDA - Pôle de médecine aiguë, UCL - (MGD) Services des soins intensifs, UCL - (SLuc) Service de soins intensifs, Graduate School, Intensive Care Medicine, ACS - Heart failure & arrhythmias, ACS - Diabetes & metabolism, ACS - Pulmonary hypertension & thrombosis, ACS - Microcirculation, Madotto, F, Rezoagli, E, Pham, T, Schmidt, M, Mcnicholas, B, Protti, A, Panwar, R, Bellani, G, Fan, E, Van Haren, F, Brochard, L, Laffey, J, Pesenti, A, Esteban, A, Gattinoni, L, Larsson, A, Mcauley, D, Ranieri, M, Rubenfeld, G, Thompson, B, Wrigge, H, Slutsky, A, Rios, F, Sottiaux, T, Depuydt, P, Lora, F, Azevedo, L, Bugedo, G, Qiu, H, Gonzalez, M, Silesky, J, Cerny, V, Nielsen, J, Jibaja, M, Matamis, D, Ranero, J, Amin, P, Hashemian, S, Clarkson, K, Kurahashi, K, Villagomez, A, Zeggwagh, A, Heunks, L, Laake, J, Palo, J, Do Vale Fernandes, A, Sandesc, D, Arabi, Y, Bumbasierevic, V, Nin, N, Lorente, J, Piquilloud, L, Abroug, F, Mcnamee, L, Hurtado, J, Bajwa, E, Dempaire, G, Theresa, U, Sula, H, Nunci, L, Cani, A, Maria, V, Zazu, A, Dellera, C, Insaurralde, C, Alejandro, R, Daldin, J, Vinzio, M, Fernandez, R, Cardonnet, L, Bettini, L, Bisso, M, Osman, E, Setten, M, Lovazzano, P, Alvarez, J, Villar, V, Pozo, N, Grubissich, N, Plotnikow, G, Vasquez, D, Ilutovich, S, Tiribelli, N, Chena, A, Pellegrini, C, Saenz, M, Estenssoro, E, Brizuela, M, Gianinetto, H, Gomez, P, Cerrato, V, Bezzi, M, Borello, S, Loiacono, F, Fernandez, A, Knowles, S, Reynolds, C, Inskip, D, Miller, J, Kong, J, Whitehead, C, Bihari, S, Seven, A, Krstevski, A, Rodgers, H, Millar, R, Mckenna, T, Bailey, I, Hanlon, G, Aneman, A, Lynch, J, Azad, R, Neal, J, Woods, P, Roberts, B, Kol, M, Wong, H, Riss, K, Staudinger, T, Wittebole, X, Berghe, C, Bulpa, P, Dive, A, Verstraete, R, Lebbinck, H, Vermassen, J, Meersseman, P, Ceunen, H, Rosa, J, Beraldo, D, Piras, C, Rampinelli, A, Nassar, A, Mataloun, S, Moock, M, Thompson, M, Goncalves, C, Antonio, A, Ascoli, A, Biondi, R, Fontenele, D, Nobrega, D, Sales, V, Shindhe, S, Pg Hj Ismail, D, Beloncle, F, Davies, K, Cirone, R, Manoharan, V, Ismail, M, Goligher, E, Jassal, M, Nishikawa, E, Javeed, A, Curley, G, Rittayamai, N, Parotto, M, Ferguson, N, Mehta, S, Knoll, J, Pronovost, A, Canestrini, S, Bruhn, A, Garcia, P, Aliaga, F, Farias, P, Yumha, J, Ortiz, C, Salas, J, Saez, A, Vega, L, Labarca, E, Martinez, F, Carreno, N, Lora, P, Liu, H, Liu, L, Tang, R, Luo, X, An, Y, Zhao, H, Gao, Y, Zhai, Z, Ye, Z, Wang, W, Li, W, Li, Q, Zheng, R, Yu, W, Shen, J, Li, X, Yu, T, Lu, W, Wu, Y, Huang, X, He, Z, Lu, Y, Han, H, Zhang, F, Sun, R, Wang, H, Qin, S, Zhu, B, Zhao, J, Liu, J, Li, B, Zhou, F, Zhang, X, Li-Xin, Z, Xin-Hua, Q, Jiang, L, Zhao, X, Li, Y, Wang, C, Yao, Q, Yu, R, Chen, K, Shao, H, Qin, B, Huang, Q, Zhu, W, Hang, A, Hua, M, Xu, Y, Di, Y, Ling, L, Qin, T, Wang, S, Qin, J, Han, Y, Zhou, S, Vargas, M, Silesky Jimenez, J, Gonzalez Rojas, M, Solis-Quesada, J, Ramirez-Alfaro, C, Maca, J, Sklienka, P, Gjedsted, J, Christiansen, A, Villamagua, B, Llano, M, Burtin, P, Buzancais, G, Beuret, P, Pelletier, N, Mortaza, S, Mercat, A, Chelly, J, Jochmans, S, Terzi, N, Daubin, C, Carteaux, G, De Prost, N, Chiche, J, Daviaud, F, Fartoukh, M, Barberet, G, Biehler, J, Dellamonica, J, Doyen, D, Arnal, J, Briquet, A, Hraiech, S, Papazian, L, Follin, A, Roux, D, Messika, J, Kalaitzis, E, Dangers, L, Combes, A, Au, S, Beduneau, G, Carpentier, D, Zogheib, E, Dupont, H, Ricome, S, Santoli, F, Besset, S, Michel, P, Gelee, B, Danin, P, Goubaux, B, Crova, P, Phan, N, Berkelmans, F, Badie, J, Tapponnier, R, Gally, J, Khebbeb, S, Herbrecht, J, Schneider, F, Declercq, P, Rigaud, J, Duranteau, J, Harrois, A, Chabanne, R, Marin, J, Bigot, C, Thibault, S, Ghazi, M, Boukhazna, M, Zein, S, Richecoeur, J, Combaux, D, Grelon, F, Le Moal, C, Sauvadet, E, Robine, A, Lemiale, V, Reuter, D, Dres, M, Demoule, A, Goldgran-Toledano, D, Baboi, L, Guerin, C, Lohner, R, Krassler, J, Schafer, S, Zacharowski, K, Meybohm, P, Reske, A, Simon, P, Hopf, H, Schuetz, M, Baltus, T, Papanikolaou, M, Papavasilopoulou, T, Zacharas, G, Ourailogloy, V, Mouloudi, E, Massa, E, Nagy, E, Stamou, E, Kiourtzieva, E, Oikonomou, M, Avila, L, Cortez, C, Citalan, J, Jog, S, Sable, S, Shah, B, Gurjar, M, Baronia, A, Memon, M, Muthuchellappan, R, Ramesh, V, Shenoy, A, Unnikrishnan, R, Dixit, S, Rhayakar, R, Ramakrishnan, N, Bhardwaj, V, Mahto, H, Sagar, S, Palaniswamy, V, Ganesan, D, Jamaati, H, Heidari, F, Meaney, E, Nichol, A, Knapman, K, O'Croinin, D, Dunne, E, Breen, D, Jaafar, R, Dwyer, R, Amir, F, Ajetunmobi, O, O'Muircheartaigh, A, Black, C, Treanor, N, Collins, D, Altaf, W, Zani, G, Fusari, M, Spadaro, S, Volta, C, Graziani, R, Brunettini, B, Palmese, S, Formenti, P, Umbrello, M, Lombardo, A, Pecci, E, Botteri, M, Savioli, M, Mattei, A, Schiavoni, L, Tinnirello, A, Todeschini, M, Giarratano, A, Cortegiani, A, Sher, S, Rossi, A, Antonelli, M, Montini, L, Casalena, P, Scafetti, S, Panarello, G, Occhipinti, G, Patroniti, N, Pozzi, M, Biscione, R, Poli, M, Raimondi, F, Albiero, D, Crapelli, G, Beck, E, Pota, V, Schiavone, V, Molin, A, Tarantino, F, Monti, G, Frati, E, Mirabella, L, Cinnella, G, Fossali, T, Colombo, R, Pattarino, P, Mojoli, F, Braschi, A, Borotto, E, Cracchiolo, A, Palma, D, Raponi, F, Foti, G, Vascotto, E, Coppadoro, A, Brazzi, L, Floris, L, Iotti, G, Venti, A, Yamaguchi, O, Takagi, S, Maeyama, H, Watanabe, E, Yamaji, Y, Shimizu, K, Shiozaki, K, Futami, S, Ryosuke, S, Saito, K, Kameyama, Y, Ueno, K, Izawa, M, Okuda, N, Suzuki, H, Harasawa, T, Nasu, M, Takada, T, Ito, F, Shin-Nunomiya, K, Abe, T, Andoh, K, Kusumoto, K, Hirata, A, Takaba, A, Kimura, H, Matsumoto, S, Higashijima, U, Honda, H, Aoki, N, Imai, H, Ogino, Y, Mizuguchi, I, Ichikado, K, Nitta, K, Mochizuki, K, Hashida, T, Tanaka, H, Nakamura, T, Niimi, D, Ueda, T, Kashiwa, Y, Uchiyama, A, Sabelnikovs, O, Oss, P, Haddad, Y, Liew, K, Namendys-Silva, S, Jarquin-Badiola, Y, Sanchez-Hurtado, L, Gomez-Flores, S, Marin, M, Lemus, J, Fierro, J, Cervantes, M, Mejia, F, Dector, D, Gonzalez, D, Estrella, C, Sanchez-Medina, J, Ramirez-Gutierrez, A, George, F, Aguirre, J, Buensuseso, J, Poblano, M, Dendane, T, Balkhi, H, Elkhayari, M, Samkaoui, N, Ezzouine, H, Amor, A, Maazouzi, W, Cimic, N, Beck, O, Bruns, M, Schouten, J, Raaijmakers, M, Van Wezel, H, Heines, S, Strauch, U, Buise, M, Simonis, F, Schultz, M, Goodson, J, Browne, T, Navarra, L, Hunt, A, Hutchison, R, Bailey, M, Newby, L, Mcarthur, C, Kalkoff, M, Mcleod, A, Casement, J, Hacking, D, Andersen, F, Dolva, M, Barratt-Due, A, Noremark, K, Soreide, E, Sjobo, B, Guttormsen, A, Leon Yoshido, H, Aguilar, R, Montes Oscanoa, F, Alisasis, A, Robles, J, Pasanting-Lim, R, Tan, B, Andruszkiewicz, P, Jakubowska, K, Coxo, C, Alvarez, A, Oliveira, B, Montanha, G, Barros, N, Pereira, C, Messias, A, Monteiro, J, Araujo, A, Catorze, N, Marum, S, Bouw, M, Gomes, R, Brito, V, Castro, S, Estilita, J, Barros, F, Serra, I, Martinho, A, Tomescu, D, Marcu, A, Bedreag, O, Papurica, M, Corneci, D, Negoita, S, Grigoriev, E, Gritsan, A, Gazenkampf, A, Almekhlafi, G, Albarrak, M, Mustafa, G, Maghrabi, K, Salahuddin, N, Aisa, T, Al Jabbary, A, Tabhan, E, Trinidad, O, Al Dorzi, H, Bolon, S, Smith, O, Mancebo, J, Aguirre-Bermeo, H, Lopez-Delgado, J, Esteve, F, Rialp, G, Forteza, C, De Haro, C, Artigas, A, Albaiceta, G, De Cima-Iglesias, S, Seoane-Quiroga, L, Ceniceros-Barros, A, Ruiz-Aguilar, A, Claraco-Vega, L, Soler, J, Del Carmen Lorente, M, Hermosa, C, Gordo, F, Lopez-Messa, J, Perez, M, Perez, C, Allue, R, Roche-Campo, F, Ibanez-Santacruz, M, Pintado, M, De Pablo, R, Ruiz, S, Moles, S, Jurado, M, Arizmendi, A, Piacentini, E, Franco, N, Honrubia, T, Cheng, M, Losada, E, Yuste, L, Carbayo-Gorriz, C, Cazorla-Barranquero, F, Alonso, J, Alda, R, Algaba, A, Navarro, G, Cereijo, E, Diaz-Rodriguez, E, Marcos, D, Montero, L, Para, L, Sanchez, R, Navalpotro, M, Abad, R, Gonz A Lez, R, Toribio, D, Castro, A, Artiga, M, Penuelas, O, Roser, T, 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S, Lee, J, Mesar, T, Shinn, J, Gomaa, D, Tainter, C, Yeatts, D, Warren, J, Lanspa, M, Miller, R, Grissom, C, Brown, S, Bauer, P, Gosselin, R, Kitch, B, Cohen, J, Beegle, S, Gueret, R, Tulaimat, A, Choudry, S, Stigler, W, Batra, H, Huff, N, Lamb, K, Oetting, T, Mohr, N, Judy, C, Saito, S, Kheir, F, Schlichting, A, Delsing, A, Crouch, D, Elmasri, M, Ismail, D, Dreyer, K, Blakeman, T, Baron, R, Grijalba, C, Hou, P, Seethala, R, Aisiku, I, Henderson, G, Frendl, G, Hou, S, Owens, R, Schomer, A, Bumbasirevic, V, Jovanovic, B, Surbatovic, M, Veljovic, M, Madotto F, Rezoagli E, Pham T, Schmidt M, McNicholas B, Protti A, Panwar R, Bellani G, Fan E, van Haren F, Brochard L, Laffey JG, Antonio Pesenti, John G Laffey, Laurent Brochard, Andres Esteban, Luciano Gattinoni, Frank van Haren, Anders Larsson, Daniel F McAuley, Marco Ranieri, Gordon Rubenfeld, B Taylor Thompson, Hermann Wrigge, Arthur S Slutsky, Fernando Rios, T Sottiaux, P Depuydt, Fredy S Lora, Luciano Cesar Azevedo, Eddy Fan, Guillermo Bugedo, Haibo Qiu, Marcos Gonzalez, Juan Silesky, Vladimir Cerny, Jonas Nielsen, Manuel Jibaja, Tài Pham, Dimitrios Matamis, Jorge Luis Ranero, Pravin Amin, S M Hashemian, Kevin Clarkson, Giacomo Bellani, Kiyoyasu Kurahashi, Asisclo Villagomez, Amine Ali Zeggwagh, Leo M Heunks, Jon Henrik Laake, Jose Emmanuel Palo, Antero do Vale Fernandes, Dorel Sandesc, Yaasen Arabi, Vesna Bumbasierevic, Nicolas Nin, Jose A Lorente, Lise Piquilloud, Fekri Abroug, Daniel F McAuley, Lia McNamee, Javier Hurtado, Ed Bajwa, Gabriel Démpaire, Uhc Mother Theresa, Hektor Sula, Lordian Nunci, Alma Cani, Villa Maria, Alan Zazu, Christian Dellera, Carolina S Insaurralde, Risso V Alejandro, Julio Daldin, Mauricio Vinzio, Ruben O Fernandez, Luis P Cardonnet, Lisandro R Bettini, Mariano Carboni Bisso, Emilio M Osman, Mariano G Setten, Pablo Lovazzano, Javier Alvarez, Veronica Villar, Norberto C Pozo, Nicolas Grubissich, Gustavo A Plotnikow, Daniela N Vasquez, Santiago Ilutovich, Norberto Tiribelli, Ariel Chena, Carlos A Pellegrini, María G Saenz, Elisa Estenssoro, Matias Brizuela, Hernan Gianinetto, Pablo E Gomez, Valeria I Cerrato, Marco G Bezzi, Silvina A Borello, Flavia A Loiacono, Adriana M Fernandez, Serena Knowles, Claire Reynolds, Deborah M Inskip, Jennene J Miller, Jing Kong, Christina Whitehead, Shailesh Bihari, Aylin Seven, Amanda Krstevski, Helen J Rodgers, Rebecca T Millar, Toni E Mckenna, Irene M Bailey, Gabrielle C Hanlon, Anders Aneman, Joan M Lynch, Raman Azad, John Neal, Paul W Woods, Brigit L Roberts, Mark R Kol, Helen S Wong, Katharina C Riss, Thomas Staudinger, Xavier Wittebole, Caroline Berghe, Pierre A Bulpa, Alain M Dive, Rik Verstraete, Herve Lebbinck, Pieter Depuydt, Joris Vermassen, Philippe Meersseman, Helga Ceunen, Jonas I Rosa, Daniel O Beraldo, Claudio Piras, Adenilton M Rampinelli, Antonio P Nassar Jr, Sergio Mataloun, Marcelo Moock, Marlus M Thompson, Claudio H Gonçalves, Ana Carolina P Antônio, Aline Ascoli, Rodrigo S Biondi, Danielle C Fontenele, Danielle 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Laurence Dangers, Alain Combes, Siu-Ming Au, Gaetan Béduneau, Dorothée Carpentier, Elie H Zogheib, Herve Dupont, Sylvie Ricome, Francesco L Santoli, Sebastien L Besset, Philippe Michel, Bruno Gelée, Pierre-Eric Danin, Bernard Goubaux, Philippe J Crova, Nga T Phan, Frantz Berkelmans, Julio C Badie, Romain Tapponnier, Josette Gally, Samy Khebbeb, Jean-Etienne Herbrecht, Francis Schneider, Pierre-Louis M Declercq, Jean-Philippe Rigaud, Jacques Duranteau, Anatole Harrois, Russell Chabanne, Julien Marin, Charlene Bigot, Sandrine Thibault, Mohammed Ghazi, Messabi Boukhazna, Salem Ould Zein, Jack R Richecoeur, Daniele M Combaux, Fabien Grelon, Charlene Le Moal, Elise P Sauvadet, Adrien Robine, Virginie Lemiale, Danielle Reuter, Martin Dres, Alexandre Demoule, Dany Goldgran-Toledano, Loredana Baboi, Claude Guérin, Ralph Lohner, Jens Kraßler, Susanne Schäfer, Kai D Zacharowski, Patrick Meybohm, Andreas W Reske, Philipp Simon, Hans-Bernd F Hopf, Michael Schuetz, Thomas Baltus, Metaxia N Papanikolaou, Theonymfi G Papavasilopoulou, Giannis A Zacharas, Vasilis Ourailogloy, Eleni K Mouloudi, Eleni V Massa, Eva O Nagy, Electra E Stamou, Ellada V Kiourtzieva, Marina A Oikonomou, Luis E Avila, Cesar A Cortez, Johanna E Citalán, Sameer A Jog, Safal D Sable, Bhagyesh Shah, Mohan Gurjar, Arvind K Baronia, Mohammedfaruk Memon, Radhakrishnan Muthuchellappan, Venkatapura J Ramesh, Anitha Shenoy, Ramesh Unnikrishnan, Subhal B Dixit, Rachana V Rhayakar, Nagarajan Ramakrishnan, Vallish K Bhardwaj, Heera L Mahto, Sudha V Sagar, Vijayanand Palaniswamy, Deeban Ganesan, Seyed Mohammadreza Hashemian, Hamidreza Jamaati, Farshad Heidari, Edel A Meaney, Alistair Nichol, Karl M Knapman, Donall O'Croinin, Eimhin S Dunne, Dorothy M Breen, Kevin P Clarkson, Rola F Jaafar, Rory Dwyer, Fahd Amir, Olaitan O Ajetunmobi, Aogan C O'Muircheartaigh, Colin S Black, Nuala Treanor, Daniel V Collins, Wahid Altaf, Gianluca Zani, Maurizio Fusari, Savino Spadaro, Carlo A Volta, Romano Graziani, Barbara Brunettini, Salvatore Palmese, Paolo Formenti, Michele Umbrello, Andrea Lombardo, Elisabetta Pecci, Marco Botteri, Monica Savioli, Alessandro Protti, Alessia Mattei, Lorenzo Schiavoni, Andrea Tinnirello, Manuel Todeschini, Antonino Giarratano, Andrea Cortegiani, Sara Sher, Anna Rossi, Massimo M Antonelli, Luca M Montini, Paolo Casalena, Sergio Scafetti, Giovanna Panarello, Giovanna Occhipinti, Nicolò Patroniti, Matteo Pozzi, Roberto R Biscione, Michela M Poli, Ferdinando Raimondi, Daniela Albiero, Giulia Crapelli, Eduardo Beck, Vincenzo Pota, Vincenzo Schiavone, Alexandre Molin, Fabio Tarantino, Giacomo Monti, Elena Frati, Lucia Mirabella, Gilda Cinnella, Tommaso Fossali, Riccardo Colombo, Pierpaolo Terragni Ilaria Pattarino, Francesco Mojoli, Antonio Braschi, Erika E Borotto, Andrea N Cracchiolo, Daniela M Palma, Francesco Raponi, Giuseppe Foti, Ettore R Vascotto, Andrea Coppadoro, Luca Brazzi, Leda Floris, Giorgio A Iotti, Aaron Venti, Osamu Yamaguchi, Shunsuke Takagi, Hiroki N Maeyama, Eizo Watanabe, Yoshihiro Yamaji, Kazuyoshi Shimizu, Kyoko Shiozaki, Satoru Futami, Sekine Ryosuke, Koji Saito, Yoshinobu Kameyama, Keiko Ueno, Masayo Izawa, Nao Okuda, Hiroyuki Suzuki, Tomofumi Harasawa, Michitaka Nasu, Tadaaki Takada, Fumihito Ito, Shin-Nunomiya, Kansuke-Koyama, Toshikazu Abe, Kohkichi Andoh, Kohei Kusumoto, Akira Hirata, Akihiro Takaba, Hiroyasu Kimura, Shuhei Matsumoto, Ushio Higashijima, Hiroyuki Honda, Nobumasa Aoki, Hiroshi Imai, Yasuaki Ogino, Ichiko Mizuguchi, Kazuya Ichikado, Kenichi Nitta, Katsunori Mochizuki, Tomoaki Hashida, Hiroyuki Tanaka, Tomoyuki Nakamura, Daisuke Niimi, Takeshi Ueda, Yozo Kashiwa, Akinori Uchiyama, Olegs Sabelnikovs, Peteris Oss, Youssef Haddad, Kong Y Liew, Silvio A Ñamendys-Silva, Yves D Jarquin-Badiola, Luis A Sanchez-Hurtado, Saira S Gomez-Flores, Maria C Marin, Asisclo J Villagomez, Jordana S Lemus, Jonathan M Fierro, Mavy Ramirez Cervantes, Francisco Javier Flores Mejia, Dulce Dector, Dulce M Dector, Daniel R Gonzalez, Claudia R Estrella, Jorge R Sanchez-Medina, Alvaro Ramirez-Gutierrez, Fernando G George, Janet S Aguirre, Juan A Buensuseso, Manuel Poblano, Tarek Dendane, Hicham Balkhi, Mina Elkhayari, Nacer Samkaoui, Hanane Ezzouine, Abdellatif Benslama Mourad Amor, Wajdi Maazouzi, Nedim Cimic, Oliver Beck, Monique M Bruns, Jeroen A Schouten, Myra-Rinia, Monique Raaijmakers, Hellen M Van Wezel, Serge J Heines, Ulrich Strauch, Marc P Buise, Fabienne D Simonis, Marcus J Schultz, Jennifer C Goodson, Troy S Browne, Leanlove Navarra, Anna Hunt, Robyn A Hutchison, Mathew B Bailey, Lynette Newby, Colin Mcarthur, Michael Kalkoff, Alex Mcleod, Jonathan Casement, Danielle J Hacking, Finn H Andersen, Merete S Dolva, Jon H Laake, Andreas Barratt-Due, Kim Andre L Noremark, Eldar Søreide, Brit Å Sjøbø, Anne B Guttormsen, Hector H Leon Yoshido, Ronald Zumaran Aguilar, Fredy A Montes Oscanoa, Alain U Alisasis, Joanne B Robles, Rossini Abbie B Pasanting-Lim, Beatriz C Tan, Pawel Andruszkiewicz, Karina Jakubowska, Cristina M Coxo, António M Alvarez, Bruno S Oliveira, Gustavo M Montanha, Nelson C Barros, Carlos S Pereira, António M Messias, Jorge M Monteiro, Ana M Araujo, Nuno T Catorze, Susan M Marum, Maria J Bouw, Rui M Gomes, Vania A Brito, Silvia Castro, Joana M Estilita, Filipa M Barros, Isabel M Serra, Aurelia M Martinho, Dana R Tomescu, Alexandra Marcu, Ovidiu H Bedreag, Marius Papurica, Dan E Corneci, Silvius Ioan Negoita, Evgeny Grigoriev, Alexey I Gritsan, Andrey A Gazenkampf, Ghaleb Almekhlafi, Mohamad M Albarrak, Ghanem M Mustafa, Khalid A Maghrabi, Nawal Salahuddin, Tharwat M Aisa, Ahmed S Al Jabbary, Edgardo Tabhan, Yaseen M Arabi, Olivia A Trinidad, Hasan M Al Dorzi, Edgardo E Tabhan, Stefan Bolon, Oliver Smith, Jordi Mancebo, Hernan Aguirre-Bermeo, Juan C Lopez-Delgado, Francisco Esteve, Gemma Rialp, Catalina Forteza, Candelaria De Haro, Antonio Artigas, Guillermo M Albaiceta, Sara De Cima-Iglesias, Leticia Seoane-Quiroga, Alexandra Ceniceros-Barros, Antonio L Ruiz-Aguilar, Luis M Claraco-Vega, Juan Alfonso Soler, Maria Del Carmen Lorente, Cecilia Hermosa, Federico Gordo, Miryam-Prieto-González, Juan B López-Messa, Manuel P Perez, Cesar P Perez, Raquel Montoiro Allue, Ferran Roche-Campo, Marcos Ibañez-Santacruz, Susana-Temprano, Maria C Pintado, Raul De Pablo, Pilar Ricart Aroa Gómez, Silvia Rodriguez Ruiz, Silvia Iglesias Moles, Mª Teresa Jurado, Alfons Arizmendi, Enrique A Piacentini, Nieves Franco, Teresa Honrubia, Meisy Perez Cheng, Elena Perez Losada, Javier-Blanco, Luis J Yuste, Cecilia Carbayo-Gorriz, Francisca G Cazorla-Barranquero, Javier G Alonso, Rosa S Alda, Ángela Algaba, Gonzalo Navarro, Enrique Cereijo, Esther Diaz-Rodriguez, Diego Pastor Marcos, Laura Alvarez Montero, Luis Herrera Para, Roberto Jimenez Sanchez, Miguel Angel Blasco Navalpotro, Ricardo Diaz Abad, Raquel Montiel Gonz Á Lez, D Á Cil Parrilla Toribio, Alejandro G Castro, Maria Jose D Artiga, Oscar Penuelas, Tomas P Roser, Moreno F Olga, Elena Gallego Curto, Rocío Manzano Sánchez, Vallverdu P Imma, Garcia M Elisabet, Laura Claverias, Monica Magret, Ana M Pellicer, Lucia L Rodriguez, Jesús Sánchez-Ballesteros, Ángela González-Salamanca, Antonio G Jimenez, Francisco P Huerta, Juan Carlos J Sotillo Diaz, Esther Bermejo Lopez, David D Llinares Moya, Alec A Tallet Alfonso, Palazon Sanchez Eugenio Luis, Palazon Sanchez Cesar, Sánchez I Rafael, Corcoles G Virgilio, Noelia N Recio, Richard O Adamsson, Christian C Rylander, Bernhard Holzgraefe, Lars M Broman, Joanna Wessbergh, Linnea Persson, Fredrik Schiöler, Hans Kedelv, Anna Oscarsson Tibblin, Henrik Appelberg, Lars Hedlund, Johan Helleberg, Karin E Eriksson, Rita Glietsch, Niklas Larsson, Ingela Nygren, Silvia L Nunes, Anna-Karin Morin, Thomas Kander, Anne Adolfsson, Hervé O Zender, Corinne Leemann-Refondini, Souheil Elatrous, Slaheddine Bouchoucha, Imed Chouchene, Islem Ouanes, Asma Ben Souissi, Salma Kamoun, Oktay Demirkiran, Mustafa Aker, Emre Erbabacan, Ilkay Ceylan, Nermin Kelebek Girgin, Menekse Ozcelik, Necmettin Ünal, Basak Ceyda Meco, Onat O Akyol, Suleyman S Derman, Barry Kennedy, Ken Parhar, Latha Srinivasa, Danny McAuley, Phil Hopkins, Clare Mellis, Vivek Kakar, Dan Hadfield, Andre Vercueil, Kaushik Bhowmick, Sally K Humphreys, Andrew Ferguson, Raymond Mckee, Ashok S Raj, Danielle A Fawkes, Philip Watt, Linda Twohey, Rajeev R JhaMatthew Thomas, Alex Morton, Varsha Kadaba, Mark J Smith, Anil P Hormis, Santhana G Kannan, Miriam Namih, Henrik Reschreiter, Julie Camsooksai, Alek Kumar, Szabolcs Rugonfalvi, Christopher Nutt, Orla O'Neill, Colette Seasman, Ged Dempsey, Christopher J Scott, Helen E Ellis, Stuart Mckechnie, Paula J Hutton, Nora N Di Tomasso, Michela N Vitale, Ruth O Griffin, Michael N Dean, Julius H Cranshaw, Emma L Willett, Nicholas Ioannou, Sarah Gillis, Peter Csabi, Rosaleen Macfadyen, Heidi Dawson, Pieter D Preez, Alexandra J Williams, Owen Boyd, Laura Ortiz-Ruiz De Gordoa, Jon Bramall, Sophie Symmonds, Simon K Chau, Tim Wenham, Tamas Szakmany, Piroska Toth-Tarsoly, Katie H McCalman, Peter Alexander, Lorraine Stephenson, Thomas Collyer, Rhiannon Chapman, Raphael Cooper, Russell M Allan, Malcolm Sim, David W Wrathall, Donald A Irvine, Kim S Zantua, John C Adams, Andrew J Burtenshaw, Gareth P Sellors, Ingeborg D Welters, Karen E Williams, Robert J Hessell, Matthew G Oldroyd, Ceri E Battle, Suresh Pillai, Istvan Kajtor, Mageswaran Sivashanmugavel, Sinead C O'Kane, Adrian Donnelly, Aniko D Frigyik, Jon P Careless, Martin M May, Richard Stewart, T John Trinder, Samantha J Hagan, Matt P Wise, Jade M Cole, Caroline C MacFie, Anna T Dowling, Nicolás Nin, Edgardo Nuñez, Gustavo Pittini, Ruben Rodriguez, María C Imperio, Cristina Santos, Ana G França, Alejandro Ebeid, Alberto Deicas, Carolina Serra, Aditya Uppalapati, Ghassan Kamel, Valerie M Banner-Goodspeed, Jeremy R Beitler, Satyanarayana Reddy Mukkera, Shreedhar Kulkarni, Jarone Lee, Tomaz Mesar, John O Shinn 3rd, Dina Gomaa, Christopher Tainter, Dale J Yeatts, Jessica Warren, Michael J Lanspa, Russel R Miller, Colin K Grissom, Madotto F, Rezoagli E, Pham T, Schmidt M, McNicholas B, Protti A, Panwar R, Bellani G, Fan E, van Haren F, Brochard L, Laffey JG, and LUNG SAFE Investigators and the ESICM Trials Group, Samuel M Brown, Philippe R Bauer, Ryan J Gosselin, Barrett T Kitch, Jason E Cohen, Scott H Beegle, Renaud M Gueret, Aiman Tulaimat, Shazia Choudry, William Stigler, Hitesh Batra, Nidhi G Huff, Keith D Lamb, Trevor W Oetting, Nicholas M Mohr, Claine Judy, Shigeki Saito, Fayez M Kheir, Fayez Kheir, Adam B Schlichting, Angela Delsing, Daniel R Crouch, Mary Elmasri, Dina Ismail, Kyle R Dreyer, Thomas C Blakeman, Rebecca M Baron, Carolina Quintana Grijalba, Peter C Hou, Raghu Seethala, Imo Aisiku, Galen Henderson, Gyorgy Frendl, Sen-Kuang Hou, Robert L Owens, Ashley Schomer, Vesna Bumbasirevic, Bojan Jovanovic, Maja Surbatovic, Milic Veljovic
Subjects: ARDS, medicine.medical_treatment, 030204 cardiovascular system & hematology, Critical Care and Intensive Care Medicine, Hyperoxemia, Hypoxemia, law.invention, 0302 clinical medicine, law, Fraction of inspired oxygen, Oxygen therapy, Prevalence, Medicine, Hypoxia, Acute respiratory distress syndrome, Hyperoxia, Invasive mechanical ventilation, Mortality, Respiratory Distress Syndrome, Hyperbaric Oxygenation, Respiration, lcsh:Medical emergencies. Critical care. Intensive care. First aid, Intensive care unit, Intensive Care Units, Anesthesia, Artificial, medicine.symptom, Human, Artificial ventilation, Intensive Care Unit, NO, 03 medical and health sciences, Intensive care, Settore MED/41 - ANESTESIOLOGIA, Humans, business.industry, Research, Respiratory Distress Syndrome, Adult, lcsh:RC86-88.9, medicine.disease, Respiration, Artificial, respiratory tract diseases, Oxygen, lnfectious Diseases and Global Health Radboud Institute for Health Sciences [Radboudumc 4], 030228 respiratory system, business
Abstract: Background Concerns exist regarding the prevalence and impact of unnecessary oxygen use in patients with acute respiratory distress syndrome (ARDS). We examined this issue in patients with ARDS enrolled in the Large observational study to UNderstand the Global impact of Severe Acute respiratory FailurE (LUNG SAFE) study. Methods In this secondary analysis of the LUNG SAFE study, we wished to determine the prevalence and the outcomes associated with hyperoxemia on day 1, sustained hyperoxemia, and excessive oxygen use in patients with early ARDS. Patients who fulfilled criteria of ARDS on day 1 and day 2 of acute hypoxemic respiratory failure were categorized based on the presence of hyperoxemia (PaO2 > 100 mmHg) on day 1, sustained (i.e., present on day 1 and day 2) hyperoxemia, or excessive oxygen use (FIO2 ≥ 0.60 during hyperoxemia). Results Of 2005 patients that met the inclusion criteria, 131 (6.5%) were hypoxemic (PaO2 2 use occurred in 400 (66%) out of 607 patients with hyperoxemia. Excess FIO2 use decreased from day 1 to day 2 of ARDS, with most hyperoxemic patients on day 2 receiving relatively low FIO2. Multivariate analyses found no independent relationship between day 1 hyperoxemia, sustained hyperoxemia, or excess FIO2 use and adverse clinical outcomes. Mortality was 42% in patients with excess FIO2 use, compared to 39% in a propensity-matched sample of normoxemic (PaO2 55–100 mmHg) patients (P = 0.47). Conclusions Hyperoxemia and excess oxygen use are both prevalent in early ARDS but are most often non-sustained. No relationship was found between hyperoxemia or excessive oxygen use and patient outcome in this cohort. Trial registration LUNG-SAFE is registered with ClinicalTrials.gov, NCT02010073
Published: 2020

25. A novel non-invasive method to detect excessively high respiratory effort and dynamic transpulmonary driving pressure during mechanical ventilation

Author: Michael Long, Jenna Wong, Irene Telias, Ling Liu, Eddy Fan, Martin Urner, Haibo Qiu, Niall D. Ferguson, Lorenzo Del Sorbo, Arthur S. Slutsky, Christer Sinderby, Ewan C. Goligher, Laurent Brochard, Michele Bertoni, and Jennifer Beck
Subjects: Male, medicine.medical_specialty, medicine.medical_treatment, Respiratory monitoring, Lung injury, Critical Care and Intensive Care Medicine, Artificial respiration, 03 medical and health sciences, 0302 clinical medicine, Mechanical ventilation, Internal medicine, medicine, Respiratory muscle, Pressure, Acute lung injury, Humans, Aged, Monitoring, Physiologic, Work of Breathing, Noninvasive Ventilation, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, lcsh:RC86-88.9, respiratory system, Middle Aged, Weights and Measures, Respiration, Artificial, Respiratory Muscles, 3. Good health, Diaphragm (structural system), Myotrauma, 030228 respiratory system, Breathing, Cardiology, Female, business, Transpulmonary pressure
Abstract: Background Excessive respiratory muscle effort during mechanical ventilation may cause patient self-inflicted lung injury and load-induced diaphragm myotrauma, but there are no non-invasive methods to reliably detect elevated transpulmonary driving pressure and elevated respiratory muscle effort during assisted ventilation. We hypothesized that the swing in airway pressure generated by respiratory muscle effort under assisted ventilation when the airway is briefly occluded (ΔPocc) could be used as a highly feasible non-invasive technique to screen for these conditions. Methods Respiratory muscle pressure (Pmus), dynamic transpulmonary driving pressure (ΔPL,dyn, the difference between peak and end-expiratory transpulmonary pressure), and ΔPocc were measured daily in mechanically ventilated patients in two ICUs in Toronto, Canada. A conversion factor to predict ΔPL,dyn and Pmus from ΔPocc was derived and validated using cross-validation. External validity was assessed in an independent cohort (Nanjing, China). Results Fifty-two daily recordings were collected in 16 patients. In this sample, Pmus and ΔPL were frequently excessively high: Pmus exceeded 10 cm H2O on 84% of study days and ΔPL,dyn exceeded 15 cm H2O on 53% of study days. ΔPocc measurements accurately detected Pmus > 10 cm H2O (AUROC 0.92, 95% CI 0.83–0.97) and ΔPL,dyn > 15 cm H2O (AUROC 0.93, 95% CI 0.86–0.99). In the external validation cohort (n = 12), estimating Pmus and ΔPL,dyn from ΔPocc measurements detected excessively high Pmus and ΔPL,dyn with similar accuracy (AUROC ≥ 0.94). Conclusions Measuring ΔPocc enables accurate non-invasive detection of elevated respiratory muscle pressure and transpulmonary driving pressure. Excessive respiratory effort and transpulmonary driving pressure may be frequent in spontaneously breathing ventilated patients.
Published: 2019

26. Effects of levosimendan on respiratory muscle function in patients weaning from mechanical ventilation

Author: Tim Frenzel, Hans van der Hoeven, Jonne Doorduin, Laurent Brochard, Leo M. A. Heunks, Christer Sinderby, Coen A.C. Ottenheijm, Lisanne H Roesthuis, Physiology, ACS - Pulmonary hypertension & thrombosis, and Intensive care medicine
Subjects: Original, Calcium sensitization, Levosimendan, medicine.medical_treatment, Critical Illness, Diaphragm, Other Research Radboud Institute for Molecular Life Sciences [Radboudumc 0], Critical Care and Intensive Care Medicine, Placebo, Mechanical ventilation weaning, Double-Blind Method, medicine, Respiratory muscle, Pressure, Humans, Continuous positive airway pressure, Tidal volume, Simendan, Mechanical ventilation, Muscle Weakness, business.industry, Other Research Radboud Institute for Health Sciences [Radboudumc 0], Respiration, Artificial, Respiratory Muscles, respiratory tract diseases, Diaphragm (structural system), Critical-illness-associated respiratory muscle weakness, lnfectious Diseases and Global Health Radboud Institute for Health Sciences [Radboudumc 4], Anesthesia, business, Electromagnetic Phenomena, Ventilator Weaning, Respiratory minute volume, medicine.drug
Abstract: Purpose Respiratory muscle weakness frequently develops in critically ill patients and is associated with adverse outcome, including difficult weaning from mechanical ventilation. Today, no drug is approved to improve respiratory muscle function in these patients. Previously, we have shown that the calcium sensitizer levosimendan improves calcium sensitivity of human diaphragm muscle fibers in vitro and contractile efficiency of the diaphragm in healthy subjects. The main purpose of this study is to investigate the effects of levosimendan on diaphragm contractile efficiency in mechanically ventilated patients. Methods In a double-blind randomized placebo-controlled trial, mechanically ventilated patients performed two 30-min continuous positive airway pressure (CPAP) trials with 5-h interval. After the first CPAP trial, study medication (levosimendan 0.2 µg/kg/min continuous infusion or placebo) was administered. During the CPAP trials, electrical activity of the diaphragm (EAdi), transdiaphragmatic pressure (Pdi), and flow were measured. Neuromechanical efficiency (primary outcome parameter) was calculated. Results Thirty-nine patients were included in the study. Neuromechanical efficiency was not different during the CPAP trial after levosimendan administration compared to the CPAP trial before study medication. Tidal volume and minute ventilation were higher after levosimendan administration (11 and 21%, respectively), whereas EAdi and Pdi were higher in both groups in the CPAP trial after study medication compared to the CPAP trial before study medication. Conclusions Levosimendan does not improve diaphragm contractile efficiency. Electronic supplementary material The online version of this article (10.1007/s00134-019-05767-y) contains supplementary material, which is available to authorized users.
Published: 2019

27. Early Neuromuscular Blockade in the Acute Respiratory Distress Syndrome

Author: Laurent Brochard, Takeshi Yoshida, and Brian P. Kavanagh
Subjects: ARDS, Randomization, Sedation, medicine.medical_treatment, 030204 cardiovascular system & hematology, law.invention, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, law, Fraction of inspired oxygen, medicine, Humans, 030212 general & internal medicine, Mechanical ventilation, Respiratory Distress Syndrome, Neuromuscular Blockade, business.industry, General Medicine, Interim analysis, medicine.disease, Respiration, Artificial, Dyspnea, Anesthesia, Neuromuscular Blocking Agents, medicine.symptom, business
Abstract: BACKGROUND The benefits of early continuous neuromuscular blockade in patients with acute respiratory distress syndrome (ARDS) who are receiving mechanical ventilation remain unclear. METHODS We randomly assigned patients with moderate-to-severe ARDS (defined by a ratio of the partial pressure of arterial oxygen to the fraction of inspired oxygen of
Published: 2019

28. Expiratory muscle dysfunction in critically ill patients: towards improved understanding

Author: Zhong-Hua Shi, Annemijn H. Jonkman, Armand R. J. Girbes, Coen A.C. Ottenheijm, Jian-Xin Zhou, Diana Jansen, Angelique M. E. Spoelstra-de Man, Laurent Brochard, Leo M. A. Heunks, and Heder J de Vries
Subjects: Weakness, medicine.medical_specialty, Respiratory muscle weakness, Critical Illness, medicine.medical_treatment, Review, Acute respiratory failure, Critical Care and Intensive Care Medicine, Healthcare improvement science Radboud Institute for Health Sciences [Radboudumc 18], 03 medical and health sciences, Mechanical ventilation, 0302 clinical medicine, Respiratory muscle monitoring, Muscular Diseases, Internal medicine, Anesthesiology, medicine, Respiratory muscle, Humans, Lung volumes, Respiratory system, Work of Breathing, Rib cage, business.industry, 030208 emergency & critical care medicine, Respiratory Muscles, 030228 respiratory system, Exhalation, Cardiology, Expiratory muscles, medicine.symptom, business, Transpulmonary pressure
Abstract: Contains fulltext : 215210.pdf (Publisher’s version ) (Open Access) INTRODUCTION: This narrative review summarizes current knowledge on the physiology and pathophysiology of expiratory muscle function in ICU patients, as shared by academic professionals from multidisciplinary, multinational backgrounds, who include clinicians, clinical physiologists and basic physiologists. RESULTS: The expiratory muscles, which include the abdominal wall muscles and some of the rib cage muscles, are an important component of the respiratory muscle pump and are recruited in the presence of high respiratory load or low inspiratory muscle capacity. Recruitment of the expiratory muscles may have beneficial effects, including reduction in end-expiratory lung volume, reduction in transpulmonary pressure and increased inspiratory muscle capacity. However, severe weakness of the expiratory muscles may develop in ICU patients and is associated with worse outcomes, including difficult ventilator weaning and impaired airway clearance. Several techniques are available to assess expiratory muscle function in the critically ill patient, including gastric pressure and ultrasound. CONCLUSION: The expiratory muscles are the "neglected component" of the respiratory muscle pump. Expiratory muscles are frequently recruited in critically ill ventilated patients, but a fundamental understanding of expiratory muscle function is still lacking in these patients.
Published: 2019

29. Frequency of Screening for Weaning From Mechanical Ventilation

Author: Deborah J. Cook, Maureen O. Meade, Ashley Cohen, Leena Rizvi, Sangeeta Mehta, Karen E. A. Burns, Andre Carlos Kajdacsy-Balla Amaral, Michelle E. Kho, Laurent Brochard, Francois Lamontagne, Peter Dodek, Jan O. Friedrich, Pierre Aslanian, Jessica T Y Wong, Paul C. Hébert, Lori Hand, and Andrew J.E. Seely
Subjects: Adult, Male, medicine.medical_specialty, Time Factors, Critical Illness, medicine.medical_treatment, Psychological intervention, Pilot Projects, Context (language use), Critical Care and Intensive Care Medicine, Proof of Concept Study, law.invention, Spontaneous breathing trial, 03 medical and health sciences, 0302 clinical medicine, Clinical Protocols, Randomized controlled trial, law, Informed consent, medicine, Humans, Adverse effect, Aged, Aged, 80 and over, Mechanical ventilation, Informed Consent, business.industry, Patient Selection, 030208 emergency & critical care medicine, Middle Aged, 030228 respiratory system, Emergency medicine, Airway Extubation, Breathing, Feasibility Studies, Female, business, Ventilator Weaning
Abstract: Objectives It is unknown whether more frequent screening of invasively ventilated patients, identifies patients earlier for a spontaneous breathing trial, and shortens the duration of ventilation. We assessed the feasibility of conducting a large trial to evaluate screening frequency in critically ill adults in the North American context. Design We conducted two contemporaneous, multicenter, pilot, randomized controlled trials (the LibeRation from MEchanicaL VEntilAtion and ScrEening Frequency [RELEASE] and Screening Elderly PatieNts For InclusiOn in a Weaning [SENIOR] trials) to address concerns regarding the potential for higher enrollment, fewer adverse events, and better outcomes in younger patients. Setting Ten and 11 ICUs in Canada, respectively. Patients Parallel trials of younger (RELEASE Interventions Each trial compared once daily screening to "at least twice daily" screening led by respiratory therapists. Measurements and main results In both trials, we evaluated recruitment (aim: 1-2 patients/month/ICU) and consent rates, reasons for trial exclusion, protocol adherence (target: ≥ 80%), crossovers (aim: ≤ 10%), and the effect of the alternative screening frequencies on adverse events and clinical outcomes. We included 155 patients (53 patients [23 once daily, 30 at least twice daily] in RELEASE and 102 patients [54 once daily, 48 at least twice daily] in SENIOR). Between trials, we found similar recruitment rates (1.32 and 1.26 patients/month/ICU) and reasons for trial exclusion, high consent and protocol adherence rates (> 92%), infrequent crossovers, and few adverse events. Although underpowered, at least twice daily screening was associated with a nonsignificantly faster time to successful extubation and more successful extubations but significantly increased use of noninvasive ventilation in both trials combined. Conclusions Similar recruitment and consent rates, few adverse events, and comparable outcomes in younger and older patients support conduct of a single large trial in North American ICUs assessing the net clinical benefits associated with more frequent screening.
Published: 2019

30. Sleep and Pathological Wakefulness at the Time of Liberation from Mechanical Ventilation (SLEEWE). A Prospective Multicenter Physiological Study

Author: Irene Telias, Tetyana Kendzerska, Tài Pham, Xavier Drouot, Laurent Brochard, Sangeeta Mehta, Detajin Junhasavasdikul, Edmond Chau, Martin Dres, M. Elizabeth Wilcox, Domenico Luca Grieco, Richard Leung, Nuttapol Rittayamai, and Magdy Younes
Subjects: Pulmonary and Respiratory Medicine, Mechanical ventilation, business.industry, Sedation, medicine.medical_treatment, Critical Care and Intensive Care Medicine, Sleep in non-human animals, Anesthesia, Medicine, Liberation, Delirium, Weaning, Wakefulness, medicine.symptom, business, Pathological
Abstract: Rationale: Abnormal patterns of sleep and wakefulness exist in mechanically ventilated patients.Objectives: In this study (SLEEWE [Effect of Sleep Disruption on the Outcome of Weaning from Mechanic...
Published: 2019

31. Intrathoracic Airway Closure Impacts CO2 Signal and Delivered Ventilation during Cardiopulmonary Resuscitation

Author: Cécile Ricard, Gilles Bronchti, Irene Telias, Jordi Mancebo, Paul Ouellet, Dominique Savary, Jean-Christophe M. Richard, Stéphane Delisle, Adrien Drouet, Alain Mercat, Rigollot Marceau, Emmanuel Charbonney, Domenico Luca Grieco, Bilal Badat, and Laurent Brochard
Subjects: Pulmonary and Respiratory Medicine, Pulmonary mechanics, Resuscitation, business.industry, medicine.medical_treatment, food and beverages, respiratory system, Critical Care and Intensive Care Medicine, Cardiac massage, respiratory tract diseases, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Anesthesia, Breathing, medicine, Esophageal pressure, 030212 general & internal medicine, Cardiopulmonary resuscitation, business, Airway closure
Abstract: Rationale: End-tidal CO2 (EtCO2) is used to monitor cardiopulmonary resuscitation (CPR), but it can be affected by intrathoracic airway closure. Chest compressions induce oscillations in expired CO...
Published: 2019

32. High-Flow Oxygen Therapy in Tracheostomized Subjects With Prolonged Mechanical Ventilation: A Randomized Crossover Physiologic Study

Author: Patharapan Lersritwimanmaen, Nuttapol Rittayamai, Laurent Brochard, and Jamsak Tscheikuna
Subjects: Pulmonary and Respiratory Medicine, Mechanical ventilation, Adult, Mean arterial pressure, Respiratory rate, business.industry, medicine.medical_treatment, Oxygen Inhalation Therapy, Pressure support ventilation, General Medicine, Critical Care and Intensive Care Medicine, Respiration, Artificial, Oxygen, Positive-Pressure Respiration, Blood pressure, Tracheostomy, Anesthesia, Oxygen therapy, Heart rate, medicine, Breathing, Humans, business, Original Research
Abstract: BACKGROUND: High-flow oxygen therapy via tracheostomy (HFT) can be used in tracheostomized patients during ventilator disconnection. The physiologic effects of this technique are unknown. We hypothesized that HFT would reduce inspiratory effort and improve breathing pattern compared to conventional oxygen therapy via T-tube. This study aimed to evaluate the physiologic effects of HFT compared to conventional O2 in patients with prolonged mechanical ventilation. METHODS: A randomized crossover physiologic study was conducted in adult tracheostomized patients who experienced temporary periods of ventilator disconnection. Subjects were ventilated with pressure support ventilation (PSV) for 15 min and were then randomly assigned to HFT or conventional O2 via T-tube for 30 min. After a washout period, subjects were switched to the other system. Esophageal pressure (Pes), breathing frequency, blood pressure, heart rate, S pO 2 , and transcutaneously measured pressure of carbon dioxide ( P tcCO 2 ) were recorded. The primary outcome was inspiratory effort as determined by the simplified esophageal pressure-time product (sPTPes). Secondary outcomes were Pes swing, breathing frequency, heart rate, mean arterial pressure, S pO 2 , and P tcCO 2 between groups. RESULTS: Twenty-two subjects were enrolled: sPTPes per minute was significantly higher with HFT and conventional O2 compared to PSV (153.5 ± 97.9, 163.5 ± 111.3, and 86.8 ± 51.1 cm H2O × s/min, respectively, P = .001), but it was not different between HFT and conventional O2 (P = .72). Breathing frequency increased significantly after switching from PSV to HFT and conventional O2 (23 ± 4 vs 26 ± 6 and 23 ± 4 vs 27 ± 5 breaths/min, respectively, P = .001). S pO 2 was higher with conventional O2 compared to HFT (P = .02). No differences in P tcCO 2 , mean arterial pressure, or heart rate were observed between HFT and conventional O2. CONCLUSIONS: Inspiratory effort and breathing frequency increased significantly during unassisted breathing compared to PSV in tracheostomized subjects, but HFT via tracheostomy provided no measurable additional physiologic benefit compared to O2 therapy via T-tube.
Published: 2021

33. Early Prediction of Mechanical Ventilation-Free Survival in Patients Admitted with Traumatic Spinal Cord Injury: A Registry-Based Observational Study

Author: Jacopo Garlasco, Andrea Rigamonti, Andrew J. Baker, Annia Schreiber, M. Urner, A. McFarlan, Jeffrey M. Singh, and Laurent Brochard
Subjects: Mechanical ventilation, Traumatic spinal cord injury, business.industry, Anesthesia, medicine.medical_treatment, Early prediction, Medicine, In patient, Observational study, business
Published: 2021

34. The central nervous system during lung injury and mechanical ventilation: a narrative review

Author: Dimitris Georgopoulos, Amal Jubran, Mary Elizabeth Wilcox, Lluis Blanch, Paolo Pelosi, Rafael Fernandez, Laurent Brochard, Jordi Mancebo, Timothy D. Girard, Arnaud W. Thille, Yoanna Skrobik, Guillermo M. Albaiceta, Josefina López-Aguilar, and Claudia C. dos Santos
Subjects: Mechanical ventilation, Central Nervous System, Lung, business.industry, medicine.medical_treatment, Critical Illness, Multiple Organ Failure, Central nervous system, Brain, Lung Injury, Lung injury, Multiorgan failure, Respiration, Artificial, Positive-Pressure Respiration, Crosstalk (biology), Anesthesiology and Pain Medicine, medicine.anatomical_structure, Reflex, Medicine, Animals, Humans, Narrative review, business, Neuroscience
Abstract: Mechanical ventilation induces a number of systemic responses for which the brain plays an essential role. During the last decade, substantial evidence has emerged showing that the brain modifies pulmonary responses to physical and biological stimuli by various mechanisms, including the modulation of neuroinflammatory reflexes and the onset of abnormal breathing patterns. Afferent signals and circulating factors from injured peripheral tissues, including the lung, can induce neuronal reprogramming, potentially contributing to neurocognitive dysfunction and psychological alterations seen in critically ill patients. These impairments are ubiquitous in the presence of positive pressure ventilation. This narrative review summarises current evidence of lung-brain crosstalk in patients receiving mechanical ventilation and describes the clinical implications of this crosstalk. Further, it proposes directions for future research ranging from identifying mechanisms of multiorgan failure to mitigating long-term sequelae after critical illness.
Published: 2021

35. Expert consensus statements for the management of COVID-19-related acute respiratory failure using a Delphi method

Author: Ognjen Gajic, Samuel M. Galvagno, Elie Azoulay, Adam M. Deane, Jan Bakker, Massimo Antonelli, Sangeeta Mehta, Pauline K. Park, Yaseen M. Arabi, David Pilcher, Krishnaswamy Sundararajan, Gopi C. Khilnani, Paolo Pelosi, Suveer Singh, Laurent Brochard, Younsuck Koh, Bin Du, Massimiliano Sorbello, Waleed Alhazzani, Jason Phua, Lise Piquilloud, John Victor Peter, Prashant Nasa, Sachin Gupta, Armand Mekontso-Dessap, Manu L N G Malbrain, Sharon Einav, Michael T. McCurdy, Manu Shankar-Hari, Claude Guérin, Yash Javeri, Jean-Baptiste Lascarrou, Samir Jaber, Ashish Khanna, Jordi Mancebo, Pradeep Rangappa, Deven Juneja, Andrés Esteban, Sheila Nainan Myatra, Marcus J. Schultz, Ravindranath Tiruvoipati, Andrew A. Udy, Brendan McGrath, Flávia Ribeiro Machado, Michael Nurok, Tobias Welte, Mervyn Mer, Ravi Jain, Peter Schellongowski, NMC Specialty Hospital, Al Nahda, Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Wake Forest School of Medicine [Winston-Salem], Wake Forest Baptist Medical Center, Mahatma Gandhi Hospital, Narayana Super Speciality Hospital, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, King Saud Bin Abdulaziz University for Health Sciences [Riyadh] (KSAU-HS), New York University School of Medicine (NYU), New York University School of Medicine, NYU System (NYU)-NYU System (NYU), Erasmus University Medical Center [Rotterdam] (Erasmus MC), Pontificia Universidad Católica de Chile (UC), Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], The Royal Melbourne Hospital, Peking Union Medical College Hospital [Beijing] (PUMCH), Shaare Zedek Medical Center [Jerusalem, Israel], CIBER de Epidemiología y Salud Pública (CIBERESP), Mayo Clinic, University of Maryland School of Medicine, University of Maryland System, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University of Ulsan, Centre hospitalier universitaire de Nantes (CHU Nantes), Federal University of Sao Paulo (Unifesp), International Fluid Academy, Vrije Universiteit Brussel [Bruxelles] (VUB), Hospital Universitari Sant Pau, Barcelona, Manchester University NHS Foundation Trust (MFT), Manchester Academic Health Sciences Centre [Manchester, UK], Mount Sinai Health System, Hôpital Henri Mondor, Groupe de recherche clinique CARMAS (Cardiovascular and Respiratory Manifestations of Acute lung injury and Sepsis) (CARMAS), CHU Tenon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Henri Mondor, University of the Witwatersrand [Johannesburg] (WITS), Cedars-Sinai Medical Center, University of Michigan Medical School [Ann Arbor], University of Michigan [Ann Arbor], University of Michigan System-University of Michigan System, Ospedale Policlinico San Martino [Genoa], Università degli studi di Genova = University of Genoa (UniGe), Christian Medical College and Hospital Ludhiana [Punjab, India] (CMCHL), National and Kapodistrian University of Athens (NKUA), Monash University [Melbourne], Lausanne University Hospital, Medizinische Universität Wien = Medical University of Vienna, VU University Medical Center [Amsterdam], Mahidol University [Bangkok], University of Oxford [Oxford], Guy's and St Thomas' Hospital [London], King‘s College London, Royal Brompton Hospital, Chelsea and Westminster Hospital, Monash College [Melbourne], German Center for Lung Research - DZL [Munich, Germany], Tata Memorial Centre, Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-IFR10, ACS - Pulmonary hypertension & thrombosis, Intensive Care Medicine, AII - Infectious diseases, ACS - Diabetes & metabolism, ACS - Microcirculation, and Epidemiology
Subjects: medicine.medical_specialty, ARDS, COVID-19 acute respiratory distress syndrome, Consensus, Delphi Technique, medicine.medical_treatment, education, Delphi method, Critical Care and Intensive Care Medicine, [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, Prone ventilation, 03 medical and health sciences, 0302 clinical medicine, Respiratory Insufficiency/therapy, COVID-19 high flow nasal oxygen, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, COVID-19 respiratory management, medicine, Humans, COVID-19/complications, Respiratory Insufficiency/virology, COVID 19 invasive mechanical ventilation, COVID-19 ventilatory management, Respiratory distress syndrome adult, Intensive care medicine, Personal protective equipment, Positive end-expiratory pressure, 11 Medical and Health Sciences, [SDV.MHEP.ME]Life Sciences [q-bio]/Human health and pathology/Emerging diseases, business.industry, Research, Tracheal intubation, lcsh:Medical emergencies. Critical care. Intensive care. First aid, COVID-19, 030208 emergency & critical care medicine, lcsh:RC86-88.9, medicine.disease, Emergency & Critical Care Medicine, COVID-19 high fow nasal oxygen, 3. Good health, 030228 respiratory system, Respiratory failure, Breathing, business, Respiratory Insufficiency
Abstract: Background Coronavirus disease 2019 (COVID-19) pandemic has caused unprecedented pressure on healthcare system globally. Lack of high-quality evidence on the respiratory management of COVID-19-related acute respiratory failure (C-ARF) has resulted in wide variation in clinical practice. Methods Using a Delphi process, an international panel of 39 experts developed clinical practice statements on the respiratory management of C-ARF in areas where evidence is absent or limited. Agreement was defined as achieved when > 70% experts voted for a given option on the Likert scale statement or > 80% voted for a particular option in multiple-choice questions. Stability was assessed between the two concluding rounds for each statement, using the non-parametric Chi-square (χ2) test (p Results Agreement was achieved for 27 (73%) management strategies which were then used to develop expert clinical practice statements. Experts agreed that COVID-19-related acute respiratory distress syndrome (ARDS) is clinically similar to other forms of ARDS. The Delphi process yielded strong suggestions for use of systemic corticosteroids for critical COVID-19; awake self-proning to improve oxygenation and high flow nasal oxygen to potentially reduce tracheal intubation; non-invasive ventilation for patients with mixed hypoxemic-hypercapnic respiratory failure; tracheal intubation for poor mentation, hemodynamic instability or severe hypoxemia; closed suction systems; lung protective ventilation; prone ventilation (for 16–24 h per day) to improve oxygenation; neuromuscular blocking agents for patient-ventilator dyssynchrony; avoiding delay in extubation for the risk of reintubation; and similar timing of tracheostomy as in non-COVID-19 patients. There was no agreement on positive end expiratory pressure titration or the choice of personal protective equipment. Conclusion Using a Delphi method, an agreement among experts was reached for 27 statements from which 20 expert clinical practice statements were derived on the respiratory management of C-ARF, addressing important decisions for patient management in areas where evidence is either absent or limited. Trial registration: The study was registered with Clinical trials.gov Identifier: NCT04534569.
Published: 2021

36. Separation from mechanical ventilation and survival after spinal cord injury: a systematic review and meta-analysis

Author: Karen E. A. Burns, Fernando Vieira, Dekel Stavi, Laurent Brochard, Jan O. Friedrich, David Lightfoot, Annia Schreiber, Yie Hui Lau, Andrea Rigamonti, Jacopo Garlasco, and Jeffrey M. Singh
Subjects: medicine.medical_specialty, medicine.medical_treatment, Review, Spinal cord injury, Weaning, Respiratory failure, Critical Care and Intensive Care Medicine, Spinal cord injury, Mechanical ventilation, Respiratory failure, Weaning, Intensive care unit, Rehabilitation, law.invention, Mechanical ventilation, law, Intensive care, Medicine, Intensive care unit, Rehabilitation, business.industry, RC86-88.9, Medical emergencies. Critical care. Intensive care. First aid, medicine.disease, Meta-analysis, Emergency medicine, business
Abstract: Background Prolonged need for mechanical ventilation greatly impacts life expectancy of patients after spinal cord injury (SCI). Weaning outcomes have never been systematically assessed. In this systematic review and meta-analysis, we aimed to investigate the probability of weaning success, duration of mechanical ventilation, mortality, and their predictors in mechanically ventilated patients with SCI. Methods We searched six databases from inception until August 2021 for randomized-controlled trials and observational studies enrolling adult patients (≥ 16 years) with SCI from any cause requiring mechanical ventilation. Titles and abstracts were screened independently by two reviewers. Full texts of the identified articles were then assessed for eligibility. Data were extracted independently and in duplicate by pairs of authors, using a standardized data collection form. Synthetic results are reported as meta-analytic means and proportions, based on random effects models. Results Thirty-nine studies (14,637 patients, mean age 43) were selected. Cervical lesions were predominant (12,717 patients had cervical lesions only, 1843 in association with other levels’ lesions). Twenty-five studies were conducted in intensive care units (ICUs), 14 in rehabilitative settings. In ICU, the mean time from injury to hospitalization was 8 h [95% CI 7–9], mean duration of mechanical ventilation 27 days [20–34], probability of weaning success 63% [45–78] and mortality 8% [5–11]. Patients hospitalized in rehabilitation centres had a greater number of high-level lesions (C3 or above), were at 40 days [29–51] from injury and were ventilated for a mean of 97 days [65–128]; 82% [70–90] of them were successfully weaned, while mortality was 1% [0–19]. Conclusions Although our study highlights the lack of uniform definition of weaning success, of clear factors associated with weaning outcomes, and of high-level evidence to guide optimal weaning in patients with SCI, it shows that around two-thirds of mechanically ventilated patients can be weaned in ICU after SCI. A substantial gain in weaning success can be obtained during rehabilitation, with additional duration of stay but minimal increase in mortality. The study is registered with PROSPERO (CRD42020156788).
Published: 2021

37. Reliability and limits of transport-ventilators to safely ventilate severe patients in special surge situations

Author: Francois Morin, François Beloncle, Dominique Savary, Alexandre Broc, Laurent Brochard, François Templier, Jean-Christophe M. Richard, Arnaud Lesimple, Alain Mercat, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Strasbourg (UNISTRA), University of Toronto, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Centre de Recherche en Acquisition et Traitement de l'Image pour la Santé (CREATIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Modeling & analysis for medical imaging and Diagnosis (MYRIAD), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), HAL UR1, Admin, Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Université de Lyon-Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Hospices Civils de Lyon (HCL)-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL)
Subjects: medicine.medical_specialty, Coronavirus disease 2019 (COVID-19), medicine.medical_treatment, Respiratory mechanics, [SDV]Life Sciences [q-bio], Respiratory physiology, Acute respiratory distress, Respiratory failure, Critical Care and Intensive Care Medicine, law.invention, 03 medical and health sciences, 0302 clinical medicine, Mechanical ventilation, law, Intensive care, Medicine, 030212 general & internal medicine, Respiratory system, Oxygen pressure, Acute Respiratory Distress Syndrome, Medical systems, business.industry, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, COVID-19, 030208 emergency & critical care medicine, lcsh:RC86-88.9, [SDV] Life Sciences [q-bio], 030228 respiratory system, Anesthesia, Emergency medicine, Ventilation (architecture), Breathing, business
Abstract: Background Intensive Care Units (ICU) have sometimes been overwhelmed by the surge of COVID-19 patients. Extending ICU capacity can be limited by the lack of air and oxygen pressure sources available. Transport ventilators requiring only one O2 source may be used in such places. Objective To evaluate the performances of four transport ventilators and an ICU ventilator in simulated severe respiratory conditions. Materials and methods Two pneumatic transport ventilators, (Oxylog 3000, Draeger; Osiris 3, Air Liquide Medical Systems), two turbine transport ventilators (Elisee 350, ResMed; Monnal T60, Air Liquide Medical Systems) and an ICU ventilator (Engström Carestation—GE Healthcare) were evaluated on a Michigan test lung. We tested each ventilator with different set volumes (Vtset = 350, 450, 550 ml) and compliances (20 or 50 ml/cmH2O) and a resistance of 15 cmH2O/l/s based on values described in COVID-19 Acute Respiratory Distress Syndrome. Volume error (percentage of Vtset) with P0.1 of 4 cmH2O and trigger delay during assist-control ventilation simulating spontaneous breathing activity with P0.1 of 4 cmH2O and 8 cmH2O were measured. Results Grouping all conditions, the volume error was 2.9 ± 2.2% for Engström Carestation; 3.6 ± 3.9% for Osiris 3; 2.5 ± 2.1% for Oxylog 3000; 5.4 ± 2.7% for Monnal T60 and 8.8 ± 4.8% for Elisee 350. Grouping all conditions (P0.1 of 4 cmH2O and 8 cmH2O), trigger delay was 50 ± 11 ms, 71 ± 8 ms, 132 ± 22 ms, 60 ± 12 and 67 ± 6 ms for Engström Carestation, Osiris 3, Oxylog 3000, Monnal T60 and Elisee 350, respectively. Conclusions In surge situations such as COVID-19 pandemic, transport ventilators may be used to accurately control delivered volumes in locations, where only oxygen pressure supply is available. Performances regarding triggering function are acceptable for three out of the four transport ventilators tested.
Published: 2020

38. The role for high flow nasal cannula as a respiratory support strategy in adults: a clinical practice guideline

Author: Alexandre Demoule, Dipayan Chaudhuri, Carol L. Hodgson, Antonio Pesenti, Jean-Damien Ricard, Karen E. A. Burns, Armand Dessap-Mekontso, Ewan C. Goligher, Jordi Mancebo, Alain Mercat, M. Elizabeth Wilcox, Gilda Cinnella, Tommaso Mauri, Arthur S. Slutsky, Lamia Ouanes-Besbes, Samir Jaber, Renee D. Stapleton, Massimo Antonelli, David Granton, Salvatore Maurizio Maggiore, Jean-Pierre Frat, Dominic Xiang Wang, Michela Rauseo, Laurent Brochard, Arnaud W. Thille, Charles D. Gomersall, Sharon Einav, John F. Fraser, Daniel Talmor, Elie Azoulay, Bram Rochwerg, Yigal Helviz, Giacomo Grasselli, Elisabeth D. Riviello, Nuttapol Rittayamai, Oriol Roca, Carlos Roberto Ribeiro de Carvalho, Sameer Jog, Gonzalo Hernández, McMaster University [Hamilton, Ontario], Shaare Zedek Medical Center [Jerusalem, Israel], The Hebrew University of Jerusalem (HUJ), Hospital Universitari Sant Pau, Barcelona, Università degli Studi di Milano [Milano] (UNIMI), Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, University Health Network, University of Toronto, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Hôpital Louis Mourier - AP-HP [Colombes], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Infection, Anti-microbiens, Modélisation, Evolution (IAME (UMR_S_1137 / U1137)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC)-Université Sorbonne Paris Nord, Siriraj Hospital, Mahidol University, Mahidol University [Bangkok], Vall d'Hebron University Hospital [Barcelona], Vall d’Hebron Research Institute (VHIR), Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Instituto de Salud Carlos III [Madrid] (ISC), Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Università cattolica del Sacro Cuore = Catholic University of the Sacred Heart [Roma] (Unicatt), Università degli studi 'G. d'Annunzio' Chieti-Pescara [Chieti-Pescara] (Ud'A), Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Monash University [Melbourne], Alfred Health, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Hopital Saint-Louis [AP-HP] (AP-HP), CHU Fattouma Bourguiba [Monastir] (HFB), Université de Monastir - University of Monastir (UM), Università degli Studi di Foggia - University of Foggia, University of São Paulo (USP), Hôpital Henri Mondor, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), University of Queensland [Brisbane], The Prince Charles Hospital, Centre hospitalier universitaire de Poitiers (CHU Poitiers), CIC - Poitiers, Université de Poitiers-Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Direction Générale de l'Organisation des Soins (DGOS)-Institut National de la Santé et de la Recherche Médicale (INSERM), The Chinese University of Hong Kong [Hong Kong], Hospital Virgen de la Salud, Toledo, Spain, Deenanath Mangeshkar Hospital [Pune], Beth Israel Deaconess Medical Center [Boston] (BIDMC), Harvard Medical School [Boston] (HMS), Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], St. Michael's Hospital, Larner College of Medicine [University of Vermont, Burlington], University of Vermont [Burlington], Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)-Université Sorbonne Paris Nord, Fondazione 'Policlinico Universitario A. Gemelli' [Rome], Università cattolica del Sacro Cuore [Roma] (Unicatt), Neurophysiologie Respiratoire Expérimentale et Clinique, Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), The Prince Charles Hospital [Queensland, Australia] (Metro North Hospital and Health Service), Università degli Studi di Milano = University of Milan (UNIMI), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Université Sorbonne Paris Nord, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Università degli Studi di Foggia = University of Foggia (Unifg), and Universidade de São Paulo = University of São Paulo (USP)
Subjects: Adult, medicine.medical_specialty, medicine.medical_treatment, Conference Reports and Expert Panel, [SDV]Life Sciences [q-bio], Peri-intubation, Respiratory failure, Critical Care and Intensive Care Medicine, medicine.disease_cause, 03 medical and health sciences, 0302 clinical medicine, Extubation, Anesthesiology, Oxygen therapy, Settore MED/41 - ANESTESIOLOGIA, Medicine, Cannula, Humans, Postoperative, Mortality, Intensive care medicine, ComputingMilieux_MISCELLANEOUS, Noninvasive Ventilation, business.industry, Oxygen Inhalation Therapy, 030208 emergency & critical care medicine, Guideline, 3. Good health, Clinical Practice, Oxygen, High flow nasal cannula, 030228 respiratory system, Cardiothoracic surgery, Airway Extubation, business, High flow, Respiratory Insufficiency, Nasal cannula
Abstract: Purpose High flow nasal cannula (HFNC) is a relatively recent respiratory support technique which delivers high flow, heated and humidified controlled concentration of oxygen via the nasal route. Recently, its use has increased for a variety of clinical indications. To guide clinical practice, we developed evidence-based recommendations regarding use of HFNC in various clinical settings. Methods We formed a guideline panel composed of clinicians, methodologists and experts in respiratory medicine. Using GRADE, the panel developed recommendations for four actionable questions. Results The guideline panel made a strong recommendation for HFNC in hypoxemic respiratory failure compared to conventional oxygen therapy (COT) (moderate certainty), a conditional recommendation for HFNC following extubation (moderate certainty), no recommendation regarding HFNC in the peri-intubation period (moderate certainty), and a conditional recommendation for postoperative HFNC in high risk and/or obese patients following cardiac or thoracic surgery (moderate certainty). Conclusions This clinical practice guideline synthesizes current best-evidence into four recommendations for HFNC use in patients with hypoxemic respiratory failure, following extubation, in the peri-intubation period, and postoperatively for bedside clinicians. Electronic supplementary material The online version of this article (10.1007/s00134-020-06312-y) contains supplementary material, which is available to authorized users.
Published: 2020

39. A Gas-Powered, Patient-Responsive Automatic Resuscitator For Use In Acute Respiratory Failure

Author: Paul Dorian, Annemijn H. Jonkman, Bhushan H. Katira, Doreen Engelberts, Fernando Vieira, Laurent Brochard, Annia Schreiber, Cong Lu, Alexandra M. Marquez, Arthur S. Slutsky, Intensive care medicine, and ACS - Pulmonary hypertension & thrombosis
Subjects: Pulmonary and Respiratory Medicine, Resuscitator, Respiratory rate, medicine.medical_treatment, Respiratory physiology, Lung injury, Critical Care and Intensive Care Medicine, 03 medical and health sciences, 0302 clinical medicine, Tidal Volume, Medicine, Humans, Respiratory system, Tidal volume, Original Research, Mechanical ventilation, Respiratory Distress Syndrome, Ventilators, Mechanical, business.industry, Editorials, COVID-19, General Medicine, Equipment Design, respiratory system, Benchmarking, Treatment Outcome, 030228 respiratory system, Anesthesia, Breathing, Respiratory Mechanics, business, Respiratory Insufficiency
Abstract: BACKGROUND: During the COVID-19 pandemic, a need for innovative, inexpensive, and simple ventilator devices for mass use has emerged. The Oxylator (CPR Medical Devices, Markham, Ontario, Canada) is an FDA-approved, fist-size, portable ventilation device developed for out-of-hospital emergency ventilation. It has not been tested in conditions of severe lung injury or with added PEEP. We aimed to assess the performance and reliability of the device in simulated and experimental conditions of severe lung injury, and to derive monitoring methods to allow the delivery of safe, individualized ventilation during situations of surge.METHODS: We bench-tested the functioning of the device with an added PEEP valve extensively, mimicking adult patients with various respiratory mechanics during controlled ventilation, spontaneous breathing, and prolonged unstable conditions where mechanics or breathing effort was changed at every breath. The device was further tested on a porcine model (4 animals) after inducing lung injury, and these results were compared with conventional ventilation modes.RESULTS: The device was stable and predictable, delivering a constant flow (30 L/min) and cycling automatically at the inspiratory pressure set (minimum of 20 cm H2O) above auto-PEEP. Changes in respiratory mechanics manifested as changes in respiratory timing, allowing prediction of tidal volumes from breathing frequency. Simulating lung injury resulted in relatively low tidal volumes (330 mL with compliance of 20 mL/cm H2O). In the porcine model, arterial oxygenation, CO2, and pH were comparable to conventional modes of ventilation.CONCLUSIONS: The Oxylator is a simple device that delivered stable ventilation with tidal volumes within a clinically acceptable range in bench and porcine lung models with low compliance. External monitoring of respiratory timing is advisable, allowing tidal volume estimation and recognition of changes in respiratory mechanics. The device can be an efficient, low-cost, and practical rescue solution for providing ventilatory support as a temporary bridge, but it requires a caregiver at the bedside.
Published: 2020

40. Respiratory physiology of COVID-19-induced respiratory failure compared to ARDS of other etiologies

Author: Filippo Bongiovanni, Maria Grazia Bocci, Lu Chen, Teresa Michi, Massimo Antonelli, Gennaro De Pascale, Andrea Urbani, Giuseppe Bello, Salvatore Maurizio Maggiore, Eloisa Sofia Tanzarella, Antonio Maria Dell'Anna, Laurent Brochard, Simone Carelli, Flava Torrini, Gabriele Pintaudi, Domenico Luca Grieco, Gianmarco Lombardi, Luca S Menga, Salvatore Lucio Cutuli, and Gian Marco Anzellotti
Subjects: Male, medicine.medical_specialty, ARDS, medicine.medical_treatment, Respiratory mechanics, Alveolar recruitment, Pneumonia, Viral, Respiratory physiology, Critical Care and Intensive Care Medicine, law.invention, Hypoxemia, Positive-Pressure Respiration, Betacoronavirus, law, Internal medicine, Settore MED/41 - ANESTESIOLOGIA, medicine, Humans, Respiratory system, Pandemics, Tidal volume, PEEP, Aged, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, SARS-CoV-2, Research, lcsh:Medical emergencies. Critical care. Intensive care. First aid, COVID-19, lcsh:RC86-88.9, respiratory system, Middle Aged, medicine.disease, Intensive care unit, respiratory tract diseases, Respiratory Function Tests, Intensive Care Units, Respiratory failure, Italy, Cardiology, Female, medicine.symptom, business, Coronavirus Infections, circulatory and respiratory physiology
Abstract: Background Whether respiratory physiology of COVID-19-induced respiratory failure is different from acute respiratory distress syndrome (ARDS) of other etiologies is unclear. We conducted a single-center study to describe respiratory mechanics and response to positive end-expiratory pressure (PEEP) in COVID-19 ARDS and to compare COVID-19 patients to matched-control subjects with ARDS from other causes. Methods Thirty consecutive COVID-19 patients admitted to an intensive care unit in Rome, Italy, and fulfilling moderate-to-severe ARDS criteria were enrolled within 24 h from endotracheal intubation. Gas exchange, respiratory mechanics, and ventilatory ratio were measured at PEEP of 15 and 5 cmH2O. A single-breath derecruitment maneuver was performed to assess recruitability. After 1:1 matching based on PaO2/FiO2, FiO2, PEEP, and tidal volume, COVID-19 patients were compared to subjects affected by ARDS of other etiologies who underwent the same procedures in a previous study. Results Thirty COVID-19 patients were successfully matched with 30 ARDS from other etiologies. At low PEEP, median [25th–75th percentiles] PaO2/FiO2 in the two groups was 119 mmHg [101–142] and 116 mmHg [87–154]. Average compliance (41 ml/cmH2O [32–52] vs. 36 ml/cmH2O [27–42], p = 0.045) and ventilatory ratio (2.1 [1.7–2.3] vs. 1.6 [1.4–2.1], p = 0.032) were slightly higher in COVID-19 patients. Inter-individual variability (ratio of standard deviation to mean) of compliance was 36% in COVID-19 patients and 31% in other ARDS. In COVID-19 patients, PaO2/FiO2 was linearly correlated with respiratory system compliance (r = 0.52 p = 0.003). High PEEP improved PaO2/FiO2 in both cohorts, but more remarkably in COVID-19 patients (p = 0.005). Recruitability was not different between cohorts (p = 0.39) and was highly inter-individually variable (72% in COVID-19 patients and 64% in ARDS from other causes). In COVID-19 patients, recruitability was independent from oxygenation and respiratory mechanics changes due to PEEP. Conclusions Early after establishment of mechanical ventilation, COVID-19 patients follow ARDS physiology, with compliance reduction related to the degree of hypoxemia, and inter-individually variable respiratory mechanics and recruitability. Physiological differences between ARDS from COVID-19 and other causes appear small.
Published: 2020

41. COVID-19-associated acute respiratory distress syndrome: is a different approach to management warranted?

Author: Arthur S. Slutsky, Niall D. Ferguson, Carolyn S. Calfee, Jeremy R. Beitler, Laurent Brochard, Eddy Fan, and Daniel Brodie
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, ARDS, medicine.medical_treatment, Pneumonia, Viral, MEDLINE, Context (language use), Respiratory physiology, Article, Betacoronavirus, 03 medical and health sciences, 0302 clinical medicine, Intensive care, Pandemic, medicine, Humans, 030212 general & internal medicine, Intensive care medicine, Pandemics, Mechanical ventilation, Respiratory Distress Syndrome, SARS-CoV-2, business.industry, COVID-19, medicine.disease, Respiration, Artificial, Pneumonia, 030228 respiratory system, Respiratory Mechanics, Coronavirus Infections, business
Abstract: Summary The COVID-19 pandemic has seen a surge of patients with acute respiratory distress syndrome (ARDS) in intensive care units across the globe. As experience of managing patients with COVID-19-associated ARDS has grown, so too have efforts to classify patients according to respiratory system mechanics, with a view to optimising ventilatory management. Personalised lung-protective mechanical ventilation reduces mortality and has become the mainstay of treatment in ARDS. In this Viewpoint, we address ventilatory strategies in the context of recent discussions on phenotypic heterogeneity in patients with COVID-19-associated ARDS. Although early reports suggested that COVID-19-associated ARDS has distinctive features that set it apart from historical ARDS, emerging evidence indicates that the respiratory system mechanics of patients with ARDS, with or without COVID-19, are broadly similar. In the absence of evidence to support a shift away from the current paradigm of ventilatory management, we strongly recommend adherence to evidence-based management, informed by bedside physiology, as resources permit.
Published: 2020
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42. Impact of Respiratory Rate and Dead Space in the Current Era of Lung Protective Mechanical Ventilation

Author: Laurent Brochard, François Lellouche, Mathieu Delorme, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Faculty of Medicine, Université Laval, Québec, QC, Canada., Equipe de Recherche Paramédicale sur le Handicap NeuroMoteur (ERPHAN), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Paris-Saclay, Interdepartmental Division of Critical Care Medicine, University of Toronto, Keenan Research Centre for Biomedical Science [Toronto, ON, Canada], and Li Ka Shing Knowledge Institute [Toronto, ON, Canada]-St. Michael’s Hopsital [Toronto, ON, Canada]
Subjects: Pulmonary and Respiratory Medicine, medicine.medical_specialty, Critical Care, Respiratory rate, medicine.medical_treatment, Dead space, [SDV]Life Sciences [q-bio], Critical Care and Intensive Care Medicine, 03 medical and health sciences, MESH: Positive-Pressure Respiration, 0302 clinical medicine, Respiratory Rate, Internal medicine, Tidal Volume, medicine, Humans, 030212 general & internal medicine, Mechanical ventilation, Lung, MESH: Adult Respiratory Distress Syndrome, Pulmonary Gas Exchange, business.industry, MESH: Ventilator-Induced Lung Injury, Respiratory Dead Space, Respiration, Artificial, 3. Good health, medicine.anatomical_structure, 030228 respiratory system, Cardiology, Current (fluid), Cardiology and Cardiovascular Medicine, business
Abstract: International audience; Protective ventilation should potentially be applied in most or all patients undergoing invasive mechanical ventilation.1,2 Reduction of tidal volume (VT) has progressively been incorporated over the years.3 Protective ventilation is not limited to VT reduction, however, but needs a combination of ventilator settings and associated procedures.1,4 The progressive reduction of VT has necessitated to increase the respiratory rate (RR), but no clear recommendation for setting the rate exists. In addition, the impact of dead space, including instrumental dead space (VDinstr), became highly relevant. Reducing the VDinstr should be recommended as part of lung protective ventilation,4 especially for patients requiring VT ≤ 6 mL/kg of predicted body weight (PBW).5 In this report, we reviewed data from the literature of the last 20 years to try to offer some clues to physicians on the questions of rate setting and the impact of dead space.
Published: 2020

43. Personalized Ventilation to Multiple Patients Using a Single Ventilator: Description and Proof of Concept

Author: Azad Mashari, Michael Long, David Preiss, Joseph A. Fisher, William C. K. Ng, Robert M. Kacmarek, Devin Singh, Ewan C. Goligher, Alex Vesely, Jay S. Han, Marcin Wasowicz, Shaf Keshavjee, Arthur S. Slutsky, Jose Dianti, and Laurent Brochard
Subjects: Mechanical ventilation, Ventilator circuit, ventilator, Pressure control, business.industry, medicine.medical_treatment, Methodology, Exhalation, General Medicine, respiratory system, mechanical ventilation, Artificial respiration, respiratory tract diseases, law.invention, coronavirus disease 2019, law, Anesthesia, Ventilation (architecture), medicine, ComputingMethodologies_DOCUMENTANDTEXTPROCESSING, Relief valve, artificial respiration, business, Tidal volume
Abstract: Supplemental Digital Content is available in the text., Objectives: To design and test a ventilator circuit that can be used for ventilation of two or more patients with a single ventilator, while allowing individualization of tidal volume, fractional concentration of oxygen, and positive end-expiratory pressure to each patient, irrespective of the other patient’s respiratory system mechanics. Design: Description and proof of concept studies. Settings: Respiratory therapy laboratory. Subjects: Ventilation of mechanical test lungs. Interventions: Following a previously advocated design, we used components readily available in our hospital to assemble two “bag-in-a-box” breathing circuits. Each patient circuit consisted of a flexible bag in a rigid container connected via one-way valve to a test lung, along with an inline positive end-expiratory pressure valve, connected to the ventilator’s expiratory limb. Compressed gas fills the bags during “patient” exhalation. During inspiration, gas from the ventilator, in pressure control mode, enters the containers and displaces gas from the bags to the test lungs. We varied tidal volume, “respiratory system” compliance, and positive end-expiratory pressure in one lung and observed the effect on the tidal volume of the other. Measurements and Main Results: We were able to obtain different tidal volume, dynamic driving pressure, and positive end-expiratory pressure in the two lungs under widely different compliances in both lungs. Complete obstruction, or disconnection at the circuit connection to one test lung, had minimal effect (< 5% on average) on the ventilation to the co-ventilated lung. Conclusions: A secondary circuit “bag-in-the-box” system enables individualized ventilation of two lungs overcoming many of the concerns of ventilating more than one patient with a single ventilator.
Published: 2020

44. Usefulness of Parasternal Intercostal Muscle Ultrasound during Weaning from Mechanical Ventilation

Author: Alexandre Demoule, Elise Morawiec, Julien Mayaux, Thomas Similowski, Martin Dres, Laurent Brochard, Bruno-Pierre Dubé, Stefannie Vorona, Ewan C. Goligher, Suela Demiri, dres, martin, Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), St. Michael's Hospital, Centre de recherche du CHU Sainte-Justine / Research Center of the Sainte-Justine University Hospital [Montreal, Canada], Université de Montréal (UdeM)-CHU Sainte Justine [Montréal], University of Toronto, Mount Sinai Hospital [Toronto, Canada] (MSH), Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Neurophysiologie Respiratoire Expérimentale et Clinique, Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], Centre Hospitalier de l'Université de Montréal (CHUM), Université de Montréal (UdeM), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)
Subjects: Adult, Male, medicine.medical_specialty, Weakness, Intraclass correlation, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Diaphragm, Intercostal Muscles, Spontaneous breathing trial, 03 medical and health sciences, Young Adult, 0302 clinical medicine, Internal medicine, medicine, Humans, Ultrasonography, Interventional, Mechanical ventilation, business.industry, Ultrasound, 030208 emergency & critical care medicine, Respiration, Artificial, Diaphragm (structural system), [SDV] Life Sciences [q-bio], Anesthesiology and Pain Medicine, medicine.anatomical_structure, 030228 respiratory system, Parasternal line, Cardiology, Female, medicine.symptom, business, Ventilator Weaning, Intercostal muscle
Abstract: Background The assessment of diaphragm function with diaphragm ultrasound seems to bring important clinical information to describe diaphragm work and weakness. When the diaphragm is weak, extradiaphragmatic muscles may play an important role, but whether ultrasound can also assess their activity and function is unknown. This study aimed to (1) evaluate the feasibility of measuring the thickening of the parasternal intercostal and investigate the responsiveness of this muscle to assisted ventilation; and (2) evaluate whether a combined evaluation of the parasternal and the diaphragm could predict failure of a spontaneous breathing trial. Methods First, an exploratory evaluation of the parasternal in 23 healthy subjects. Second, the responsiveness of parasternal to several pressure support levels were studied in 16 patients. Last, parasternal activity was compared in presence or absence of diaphragm dysfunction (assessed by magnetic stimulation of the phrenic nerves and ultrasound) and in case of success/failure of a spontaneous breathing trial in 54 patients. Results The parasternal was easily accessible in all patients. The interobserver reproducibility was good (intraclass correlation coefficient, 0.77 (95% CI, 0.53 to 0.89). There was a progressive decrease in parasternal muscle thickening fraction with increasing levels of pressure support (Spearman ρ = −0.61 [95% CI, −0.74 to −0.44]; P < 0.0001) and an inverse correlation between parasternal muscle thickening fraction and the pressure generating capacity of the diaphragm (Spearman ρ = −0.79 [95% CI, −0.87 to −0.66]; P < 0.0001). The parasternal muscle thickening fraction was higher in patients with diaphragm dysfunction: 17% (10 to 25) versus 5% (3 to 8), P < 0.0001. The pressure generating capacity of the diaphragm, the diaphragm thickening fraction and the parasternal thickening fraction similarly predicted failure or the spontaneous breathing trial. Conclusions Ultrasound assessment of the parasternal intercostal muscle is feasible in the intensive care unit and provides novel information regarding the respiratory capacity load balance. Editor’s Perspective What We Already Know about This Topic What This Article Tells Us That Is New
Published: 2020

45. Clinical strategies for implementing lung and diaphragm-protective ventilation: avoiding insufficient and excessive effort

Author: Giacomo Bellani, Leo M. A. Heunks, Katerina Vaporidi, Martin Dres, Bhakti K. Patel, Alexandre Demoule, Takeshi Yoshida, Tommaso Mauri, Samir Jaber, Jeremy R. Beitler, Jose Dianti, Ewan C. Goligher, Laurent Brochard, Annemijn H. Jonkman, Interdepartmental Division of Critical Care Medicine, Departments of Medicine and Physiology and Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Keenan Centre for Biomedical Research, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Canada., University of Crete [Heraklion] (UOC), Columbia University College of Physicians and Surgeons, New York, NY, USA., University of Illinois [Chicago] (UIC), University of Illinois System, Osaka University Graduate School of Medicine, Suita, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Fondazione IRCCS Ca’ Granda – Ospedale Maggiore Policlinico [Milan, Italy], Università degli Studi di Milano-Bicocca [Milano] (UNIMIB), University of Toronto, Toronto, Amsterdam UMC, Location VUmc, De Boelelaan 1117, 1081 HV, Amsterdam, University of Toronto, University Health Network, Toronto General Hospital Research Institute [Canada] (TGHRI), Amsterdam UMC - Amsterdam University Medical Center, St. Michael's Hospital, Columbia University College of Physicians and Surgeons, University of Chicago, University Graduate School of Medicine [Osaka, Japan], Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Hôpital Saint Eloi (CHRU Montpellier), Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Università degli Studi di Milano = University of Milan (UNIMI), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), dres, martin, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), MORNET, Dominique, Goligher, E, Jonkman, A, Dianti, J, Vaporidi, K, Beitler, J, Patel, B, Yoshida, T, Jaber, S, Dres, M, Mauri, T, Bellani, G, Demoule, A, Brochard, L, and Heunks, L
Subjects: medicine.medical_specialty, Mechanical ventilation’, medicine.medical_treatment, Respiratory effort, [SDV]Life Sciences [q-bio], Diaphragm, Diaphragm weakne, Lung injury, Critical Care and Intensive Care Medicine, Diaphragm weakness, 03 medical and health sciences, 0302 clinical medicine, medicine, Humans, Respiratory system, Intensive care medicine, Lung, ComputingMilieux_MISCELLANEOUS, Mechanical ventilation, Neuromuscular Blockade, Ventilators, Mechanical, business.industry, Respiration, 030208 emergency & critical care medicine, Respiration, Artificial, Diaphragm (structural system), [SDV] Life Sciences [q-bio], medicine.anatomical_structure, 030228 respiratory system, Control of respiration, Breathing, Narrative Review, business
Abstract: International audience; Mechanical ventilation may have adverse effects on both the lung and the diaphragm. Injury to the lung is mediated by excessive mechanical stress and strain, whereas the diaphragm develops atrophy as a consequence of low respiratory effort and injury in case of excessive effort. The lung and diaphragm-protective mechanical ventilation approach aims to protect both organs simultaneously whenever possible. This review summarizes practical strategies for achieving lung and diaphragm-protective targets at the bedside, focusing on inspiratory and expiratory ventilator settings, monitoring of inspiratory effort or respiratory drive, management of dyssynchrony, and sedation considerations. A number of potential future adjunctive strategies including extracorporeal CO2 removal, partial neuromuscular blockade, and neuromuscular stimulation are also discussed. While clinical trials to confirm the benefit of these approaches are awaited, clinicians should become familiar with assessing and managing patients' respiratory effort, based on existing physiological principles. To protect the lung and the diaphragm, ventilation and sedation might be applied to avoid excessively weak or very strong respiratory efforts and patient-ventilator dysynchrony.
Published: 2020

46. Lung- and Diaphragm-Protective Ventilation

Author: Robinder G. Khemani, Eddy Fan, Samir Jaber, Giacomo Grasselli, Alexandre Demoule, Sarina K. Sahetya, Jose Dianti, Dimitrios Georgopoulos, Francesco Mojoli, Tommaso Mauri, Laurent Brochard, Katerina Vaporidi, Claude Guérin, Coen A.C. Ottenheijm, Jeremy R. Beitler, Tom Schepens, Savino Spadaro, Takeshi Yoshida, Antonio Pesenti, Franco Laghi, Marcelo B. P. Amato, Ewan C. Goligher, Alain Mercat, Domenico Luca Grieco, Giacomo Bellani, L.M.A. Heunks, Irene Telias, Niall D. Ferguson, Martin Dres, Jordi Mancebo, Bhakti K. Patel, Physiology, ACS - Pulmonary hypertension & thrombosis, Intensive care medicine, University Health Network, Toronto General Hospital Research Institute [Canada] (TGHRI), Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), University of Chicago, Johns Hopkins University (JHU), Columbia University [New York], St. Michael's Hospital, Osaka University, University of Crete [Heraklion] (UOC), Università cattolica del Sacro Cuore = Catholic University of the Sacred Heart [Roma] (Unicatt), Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Antwerp University Hospital [Edegem] (UZA), Fondazione IRCCS Ca' Granda - Ospedale Maggiore Policlinico, Università degli Studi di Milano = University of Milan (UNIMI), Università degli Studi di Ferrara = University of Ferrara (UniFE), Italian Hospital of Buenos Aires, Universidade de São Paulo = University of São Paulo (USP), Università degli Studi di Milano-Bicocca = University of Milano-Bicocca (UNIMIB), University of Toronto, Hôpital Edouard Herriot [CHU - HCL], Hospices Civils de Lyon (HCL), Molecular virology and immunology – Physiopathology and therapeutic of chronic viral hepatitis (Team 18) (Inserm U955), Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Children’s Hospital Los Angeles [Los Angeles], University of Southern California (USC), Loyola University [Chicago], Endocrinologie pédiatrique[CHU Angers], Université d'Angers (UA)-Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), Università degli Studi di Pavia = University of Pavia (UNIPV), Amsterdam UMC - Amsterdam University Medical Center, Hôpital Saint Eloi (CHRU Montpellier), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Hospital de la Santa Creu i Sant Pau, dres, martin, Interdepartmental Division of Critical Care Medicine, Biomécanique cellulaire et respiratoire (BCR), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), VU University Medical Center [Amsterdam], European Soc Intensive Care Med, Goligher, E, Dres, M, Patel, B, Sahetya, S, Beitler, J, Telias, I, Yoshida, T, Vaporidi, K, Grieco, D, Schepens, T, Grasselli, G, Spadaro, S, Dianti, J, Amato, M, Bellani, G, Demoule, A, Fan, E, Ferguson, N, Georgopoulos, D, Guérin, C, Khemani, R, Laghi, F, Mercat, A, Mojoli, F, Ottenheijm, C, Jaber, S, Heunks, L, Mancebo, J, Mauri, T, Pesenti, A, Brochard, L, Sorbonne Université - Faculté de médecine [CHU Pitié Salpétrière], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), The University of Chicago Medicine [Chicago], Johns Hopkins University School of Medicine [Baltimore], Columbia University College of Physicians and Surgeons, Keenan Research Centre of the Li Ka Shing Knowledge Institute [Toronto], Graduate School of Medicine [Osaka], Osaka University [Osaka], Department of Physiopatology and Transplantation, University of Milan (DEPT), Universidade de São Paulo Medical School (FMUSP), Service de Pneumologie - R3S [CHU Pitié-Salpêtrière] (SPMIR-R3S), IMRB - 'Biomechanics and Respiratory Apparatus' [Créteil] (U955 Inserm - UPEC), Stritch School of Medicine, Edward Hines, Jr. VA Hospital, and Fondazione IRCCS Policlinico San Matteo [Pavia]
Subjects: Pulmonary and Respiratory Medicine, Artificial ventilation, medicine.medical_specialty, Consensus, Critical Care, Ventilator-Induced Lung Injury, [SDV]Life Sciences [q-bio], medicine.medical_treatment, Diaphragm, Electric Stimulation Therapy, Lung injury, Critical Care and Intensive Care Medicine, Artificial respiration, [SDV.MHEP.PSR]Life Sciences [q-bio]/Human health and pathology/Pulmonology and respiratory tract, NO, 03 medical and health sciences, Extracorporeal Membrane Oxygenation, 0302 clinical medicine, Mechanical ventilation, Intensive care, [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO], medicine, Extracorporeal membrane oxygenation, Humans, Myotrauma, 030212 general & internal medicine, Intensive care medicine, business.industry, Decision Support Systems, Clinical, Respiration, Artificial, 3. Good health, Diaphragm (structural system), Phrenic Nerve, [SDV] Life Sciences [q-bio], Muscular Atrophy, 030228 respiratory system, Breathing, Human medicine, business, Critical Care Perspective
Abstract: International audience; Mechanical ventilation can cause acute diaphragm atrophy and injury, and this is associated with poor clinical outcomes. Although the importance and impact of lung-protective ventilation is widely appreciated and well established, the concept of diaphragm-protective ventilation has recently emerged as a potential complementary therapeutic strategy. This Perspective, developed from discussions at a meeting of international experts convened by PLUG (the Pleural Pressure Working Group) of the European Society of Intensive Care Medicine, outlines a conceptual framework for an integrated lung- and diaphragm-protective approach to mechanical ventilation on the basis of growing evidence about mechanisms of injury. We propose targets for diaphragm protection based on respiratory effort and patient–ventilator synchrony. The potential for conflict between diaphragm protection and lung protection under certain conditions is discussed; we emphasize that when conflicts arise, lung protection must be prioritized over diaphragm protection. Monitoring respiratory effort is essential to concomitantly protect both the diaphragm and the lung during mechanical ventilation. To implement lung- and diaphragm-protective ventilation, new approaches to monitoring, to setting the ventilator, and to titrating sedation will be required. Adjunctive interventions, including extracorporeal life support techniques, phrenic nerve stimulation, and clinical decision-support systems, may also play an important role in selected patients in the future. Evaluating the clinical impact of this new paradigm will be challenging, owing to the complexity of the intervention. The concept of lung- and diaphragm-protective ventilation presents a new opportunity to potentially improve clinical outcomes for critically ill patients.
Published: 2020

47. How to ventilate obstructive and asthmatic patients

Author: Lamia Ouanes-Besbes, Leo M. A. Heunks, Laurent Brochard, Martin Dres, Amal Jubran, Franco Laghi, Oscar Peñuelas, Theodoros P. Vassilakopoulos, Armand Mekontso-Dessap, Alexandre Demoule, Jordi Mancebo, Stefano Nava, Lise Piquilloud, Demoule A., Brochard L., Dres M., Heunks L., Jubran A., Laghi F., Mekontso-Dessap A., Nava S., Ouanes-Besbes L., Penuelas O., Piquilloud L., Vassilakopoulos T., Mancebo J., Service de Pneumologie et Réanimation Médicale [CHU Pitié-Salpêtrière] (Département ' R3S '), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), University of Toronto, St. Michael's Hospital, VU University Medical Center [Amsterdam], Loyola University [Chicago], CHU Henri Mondor, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), CHU Fattouma Bourguiba [Monastir] (HFB), Université de Monastir - University of Monastir (UM), Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), Université de Lausanne = University of Lausanne (UNIL), University of Athens Medical School [Athens], Hospital de la Santa Creu i Sant Pau, Gestionnaire, Hal Sorbonne Université, Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Neurophysiologie Respiratoire Expérimentale et Clinique, and Université de Lausanne (UNIL)
Subjects: medicine.medical_specialty, Respiratory Therapy, medicine.medical_treatment, Pain medicine, [SDV]Life Sciences [q-bio], Review, Weaning, Critical Care and Intensive Care Medicine, 03 medical and health sciences, Pulmonary Disease, Chronic Obstructive, 0302 clinical medicine, Mechanical ventilation, Anesthesiology, Humans, Medicine, Intubation, Non-invasive ventilation, Asthmatic patient, Intensive care medicine, Asthma, Chronic obstructive pulmonary disease, Intrisic positive end-expiratory pressure (PEEP), business.industry, 030208 emergency & critical care medicine, medicine.disease, Respiration, Artificial, 3. Good health, [SDV] Life Sciences [q-bio], Natural history, 030228 respiratory system, business, Respiratory Insufficiency, Ventilator Weaning, Human
Abstract: International audience; Exacerbations are part of the natural history of chronic obstructive pulmonary disease and asthma. Severe exacerbations can cause acute respiratory failure, which may ultimately require mechanical ventilation. This review summarizes practical ventilator strategies for the management of patients with obstructive airway disease. Such strategies include non-invasive mechanical ventilation to prevent intubation, invasive mechanical ventilation, from the time of intubation to weaning, and strategies intended to prevent post-extubation acute respiratory failure. The role of tracheostomy, the long-term prognosis, and potential future adjunctive strategies are also discussed. Finally, the physiological background that underlies these strategies is detailed.
Published: 2020

48. Patient self-inflicted lung injury and positive end-expiratory pressure for safe spontaneous breathing

Author: Takeshi Yoshida, Yuji Fujino, Laurent Brochard, and Domenico Luca Grieco
Subjects: medicine.medical_treatment, Poison control, Lung injury, Critical Care and Intensive Care Medicine, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Injury prevention, medicine, Humans, Lung, Positive end-expiratory pressure, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, 030208 emergency & critical care medicine, Lung Injury, respiratory system, Respiration, Artificial, medicine.anatomical_structure, 030228 respiratory system, Anesthesia, Breathing, business
Abstract: The potential risks of spontaneous effort and their prevention during mechanical ventilation is an important concept for clinicians and patients. The effort-dependent lung injury has been termed 'patient self-inflicted lung injury (P-SILI)' in 2017. As one of the potential strategies to render spontaneous effort less injurious in severe acute respiratory distress syndrome (ARDS), the role of positive end-expiratory pressure (PEEP) is now discussed.Experimental and clinical data indicate that vigorous spontaneous effort may worsen lung injury, whereas, at the same time, the intensity of spontaneous effort seems difficult to control when lung injury is severe. Experimental studies found that higher PEEP strategy can be effective to reduce lung injury from spontaneous effort while maintaining some muscle activity. The recent clinical trial to reevaluate systemic early neuromuscular blockade in moderate-severe ARDS (i.e., reevaluation of systemic early neuromuscular blockade (ROSE) trial) support that a higher PEEP strategy can facilitate 'safe' spontaneous breathing under the light sedation targets (i.e., no increase in barotrauma nor 90 days mortality versus early muscle paralysis).To prevent P-SILI in ARDS, it seems feasible to facilitate 'safe' spontaneous breathing in patients using a higher PEEP strategy in severe ARDS.
Published: 2019

49. Continuous Negative Abdominal Pressure Reduces Ventilator-induced Lung Injury in a Porcine Model

Author: Niall D. Ferguson, Bhushan H. Katira, Marcelo B. P. Amato, Martin Post, Brian P. Kavanagh, Laurent Brochard, Gail Otulakowski, Doreen Engelberts, and Takeshi Yoshida
Subjects: Swine, Ventilator-Induced Lung Injury, medicine.medical_treatment, Atelectasis, Lung injury, 03 medical and health sciences, 0302 clinical medicine, Positive airway pressure, Electric Impedance, Pressure, Tidal Volume, medicine, Animals, Positive end-expiratory pressure, Abdominal Muscles, Mechanical ventilation, business.industry, 030208 emergency & critical care medicine, respiratory system, Pulmonary edema, medicine.disease, respiratory tract diseases, Disease Models, Animal, Anesthesiology and Pain Medicine, 030228 respiratory system, SUÍNOS, Anesthesia, Breathing, business, Transpulmonary pressure
Abstract: Background In supine patients with acute respiratory distress syndrome, the lung typically partitions into regions of dorsal atelectasis and ventral aeration (“baby lung”). Positive airway pressure is often used to recruit atelectasis, but often overinflates ventral (already aerated) regions. A novel approach to selective recruitment of dorsal atelectasis is by “continuous negative abdominal pressure.” Methods A randomized laboratory study was performed in anesthetized pigs. Lung injury was induced by surfactant lavage followed by 1 h of injurious mechanical ventilation. Randomization (five pigs in each group) was to positive end-expiratory pressure (PEEP) alone or PEEP with continuous negative abdominal pressure (−5 cm H2O via a plexiglass chamber enclosing hindlimbs, pelvis, and abdomen), followed by 4 h of injurious ventilation (high tidal volume, 20 ml/kg; low expiratory transpulmonary pressure, −3 cm H2O). The level of PEEP at the start was ≈7 (vs. ≈3) cm H2O in the PEEP (vs. PEEP plus continuous negative abdominal pressure) groups. Esophageal pressure, hemodynamics, and electrical impedance tomography were recorded, and injury determined by lung wet/dry weight ratio and interleukin-6 expression. Results All animals survived, but cardiac output was decreased in the PEEP group. Addition of continuous negative abdominal pressure to PEEP resulted in greater oxygenation (Pao2/fractional inspired oxygen 316 ± 134 vs. 80 ± 24 mmHg at 4 h, P = 0.005), compliance (14.2 ± 3.0 vs. 10.3 ± 2.2 ml/cm H2O, P = 0.049), and homogeneity of ventilation, with less pulmonary edema (≈10% less) and interleukin-6 expression (≈30% less). Conclusions Continuous negative abdominal pressure added to PEEP reduces ventilator-induced lung injury in a pig model compared with PEEP alone, despite targeting identical expiratory transpulmonary pressure.
Published: 2018

50. Continuous negative abdominal pressure: mechanism of action and comparison with prone position

Author: Laurent Brochard, Gail Otulakowski, Doreen Engelberts, Bhushan H. Katira, Takeshi Yoshida, Marcelo B. P. Amato, Brian P. Kavanagh, and Niall D. Ferguson
Subjects: medicine.medical_specialty, ARDS, Swine, Physiology, Ventilator-Induced Lung Injury, medicine.medical_treatment, Atelectasis, Lung injury, Patient Positioning, Positive-Pressure Respiration, COMPLICAÇÕES PÓS-OPERATÓRIAS, 03 medical and health sciences, 0302 clinical medicine, Physiology (medical), Internal medicine, Pressure, Prone Position, medicine, Animals, 030212 general & internal medicine, Lung, Lung Compliance, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, Oxygenation, respiratory system, medicine.disease, Oxygen, Prone position, medicine.anatomical_structure, 030228 respiratory system, Respiratory Mechanics, Respiratory Physiological Phenomena, Cardiology, business, Transpulmonary pressure
Abstract: We recently reported that continuous negative abdominal pressure (CNAP) could recruit dorsal atelectasis in experimental lung injury and that oxygenation improved at different transpulmonary pressure values compared with increases in airway pressure (Yoshida T, Engelberts D, Otulakowski G, Katira BH, Post M, Ferguson ND, Brochard L, Amato MBP, Kavanagh BP. Am J Respir Crit Care Med 197: 534–537, 2018). The mechanism of recruitment with CNAP is uncertain, and its impact compared with a commonly proposed alternative approach to recruitment, prone positioning, is not known. We hypothesized that CNAP recruits lung by decreasing the vertical pleural pressure (Ppl) gradient (i.e., difference between dependent and nondependent Ppl), thought to be one mechanism of action of prone positioning. An established porcine model of lung injury (surfactant depletion followed by ventilator-induced lung injury) was used. CNAP was applied using a plexiglass chamber that completely enclosed the abdomen at a constant negative pressure (−5 cmH2O). Lungs were recruited to maximal positive end-expiratory pressure (PEEP; 25 cmH2O) and deflated in steps of PEEP (2 cmH2O, 10 min each). CNAP lowered the Ppl in dependent but not in nondependent lung, and therefore, in contrast to PEEP, it narrowed the vertical Ppl gradient. CNAP increased respiratory system compliance and oxygenation and appeared to selectively displace the posterior diaphragm caudad (computerized tomography images). Compared with prone position without CNAP, CNAP in the supine position was associated with higher arterial partial pressure of oxygen and compliance, as well as greater homogeneity of ventilation. The mechanism of action of CNAP appears to be via selective narrowing of the vertical gradient of Ppl. CNAP appears to offer physiological advantages over prone positioning. NEW & NOTEWORTHY Continuous negative abdominal pressure reduces the vertical gradient in (dependent vs. nondependent) pleural pressure and increases oxygenation and lung compliance; it is more effective than prone positioning at comparable levels of positive end-expiratory pressure.
Published: 2018

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