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2. The Effect of an Accelerated Renal Replacement Therapy Initiation Is Not Modified by Baseline Risk

Author

Federico Angriman, Bruno L. Ferreyro, Natalia Angeloni, Bruno R. da Costa, Ron Wald, Sean M. Bagshaw, Neill K.J. Adhikari, Rinaldo Bellomo, Didier Dreyfuss, Bin Du, Martin P. Gallagher, Stéphane Gaudry, François Lamontagne, Michael Joannidis, Kathleen D. Liu, Daniel F. McAuley, Shay P. McGuinness, Alistair D. Nichol, Marlies Ostermann, Paul M. Palevsky, Haibo Qiu, Ville Pettilä, Antoine G. Schneider, Orla M. Smith, Suvi T. Vaara, Matthew Weir, Glenn M. Eastwood, Leah Peck, Helen Young, Peter Kruger, Gordon Laurie, Emma Saylor, Jason Meyer, Ellen Venz, Krista Wetzig, Craig French, Forbes McGain, John Mulder, Gerard Fennessy, Sathyajith Koottayi, Samantha Bates, Miriam Towns, Rebecca Morgan, Anna Tippett, Andrew Udy, Chris Mason, Elisa Licari, Dashiell Gantner, Jason McClure, Alistair Nichol, Phoebe McCracken, Jasmin Board, Emma Martin, Shirley Vallance, Meredith Young, Chelsey Vladic, Steve McGloughlin, David Gattas, Heidi Buhr, Jennifer Coles, Debra Hutch, James Wun, Louise Cole, Christina Whitehead, Julie Lowrey, Kristy Masters, Rebecca Gresham, Victoria Campbell, David Gutierrez, Jane Brailsford, Loretta Forbes, Lauren Murray, Teena Maguire, Martina NiChonghaile, Neil Orford, Allison Bone, Tania Elderkin, Tania Salerno, Tim Chimunda, Jason Fletcher, Emma Broadfield, Sanjay Porwal, Cameron Knott, Catherine Boschert, Julie Smith, Angus Richardson, Dianne Hill, Graeme Duke, Peter Oziemski, Santiago Cegarra, Peter Chan, Deborah Welsh, Stephanie Hunter, Owen Roodenburg, John Dyett, Nicos Kokotsis, Max Moser, Yang Yang, Laven Padayachee, Joseph Vetro, Himangsu Gangopadhyay, Melissa Kaufman, Angaj Ghosh, Simone Said, Alpesh Patel, Shailesh Bihari, Elisha Matheson, Xia Jin, Tapaswi Shrestha, Kate Schwartz, Rosalba Cross, Winston Cheung, Helen Wong, Mark Kol, Asim Shah, Amanda Y. Wang, Zoltan Endre, Celia Bradford, Pierre Janin, Simon Finfer, Naomi Diel, Jonathan Gatward, Naomi Hammond, Anthony Delaney, Frances Bass, Elizabeth Yarad, Hergen Buscher, Claire Reynolds, Nerilee Baker, Romuald Bellmann, Andreas Peer, Julia Hasslacher, Paul Koglberger, Sebastian Klein, Klemens Zotter, Anna Brandtner, Armin Finkenstedt, Adelheid Ditlbacher, Frank Hartig, Dietmar Fries, Mirjam Bachler, Bettina Schenk, Martin Wagner, Philipp Eller, Thomas Staudinger, Esther Tiller, Peter Schellongowski, Andja Bojic, Eric A. Hoste, Stephanie Bracke, Luc De Crop, Daisy Vermeiren, Fernando Thome, Bianca Chiella, Lucia Fendt, Veronica Antunes, Frédérick D'Aragon, Charles St-Arnaud, Michael Mayette, Élaine Carbonnaeu, Joannie Marchand, Marie-Hélène Masse, Marilène Ladouceur, Alexis F. Turgeon, François Lauzier, David Bellemare, Charles Langis Francoeur, Guillaume LeBlanc, Gabrielle Guilbault, Stéphanie Grenier, Eve Cloutier, Annick Boivin, Charles Delisle-Thibault, Panagiota Giannakouros, Olivier Costerousse, Jean-François Cailhier, François-Martin Carrier, Ali Ghamraoui, Martine Lebrasseur, Fatna Benettaib, Maya Salamé, Dounia Boumahni, Ying Tung Sia, Jean-François Naud, Isabelle Roy, Henry T. Stelfox, Stacey Ruddell, Braden J. Manns, Shelley Duggan, Dominic Carney, Jennifer Barchard, Richard P. Whitlock, Emilie Belley-Cote, Nevena Savija, Alexandra Sabev, Troy Campbell, Thais Creary, Kelson Devereaux, Shira Brodutch, Claudio Rigatto, Bojan Paunovic, Owen Mooney, Anna Glybina, Oksana Harasemiw, Michelle Di Nella, John Harmon, Navdeep Mehta, Louis Lakatos, Nicole Haslam, Francois Lellouche, Mathieu Simon, Ying Tung, Patricia Lizotte, Pierre-Alexandre Bourchard, Bram Rochwerg, Tim Karachi, Tina Millen, John Muscedere, David Maslove, J. Gordon Boyd, Stephanie Sibley, John Drover, Miranda Hunt, Ilinca Georgescu, Randy Wax, Ilan Lenga, Kavita Sridhar, Andrew Steele, Kelly Fusco, Taneera Ghate, Michael Tolibas, Holly Robinson, Matthew A. Weir, Ravi Taneja, Ian M. Ball, Amit Garg, Eileen Campbell, Athena Ovsenek, Sean van Diepen, Nadia Baig, Sheldon Magder, Han Yao, Ahsan Alam, Josie Campisi, Erika MacIntyre, Ella Rokosh, Kimberly Scherr, Stephen Lapinsky, Sangeeta Mehta, Sumesh Shah, Daniel J. Niven, Michael Russell, Kym Jim, Gillian Brown, Kerry Oxtoby, Adam Hall, Luc Benoit, Colleen Sokolowski, Bhanu Prasad, Jag Rao, Shelley Giebel, Demetrios J. Kutsogiannis, Patricia Thompson, Tayne Thompson, Robert Cirone, Kanthi Kavikondala, Mark Soth, France Clarke, Alyson Takaoka, David Mazer, Karen Burns, Jan Friedrich, David Klein, Gyan Sandhu, Marlene Santos, Imrana Khalid, Jennifer Hodder, Peter Dodek, Najib Ayas, Victoria Alcuaz, Gabriel Suen, Oleksa Rewa, Gurmeet Singh, Sean Norris, Neil Gibson, Castro Arias, Aysha Shami, Celine Pelletier, Alireza Zahirieh, Andre Amaral, Nicole Marinoff, Navjot Kaur, Adic Perez, Jane Wang, Gregory Haljan, Christopher Condin, Lauralyn McIntyre, Brigette Gomes, Rebecca Porteous, Irene Watpool, Swapnil Hiremath, Edward Clark, Margaret S. Herridge, Felicity Backhouse, M. Elizabeth Wilcox, Karolina Walczak, Vincent Ki, Asheer Sharman, Martin Romano, R.T. Noel Gibney, Adam S. Romanovsky, Lorena McCoshen, Gordon Wood, Daniel Ovakim, Fiona Auld, Gayle Carney, Meili Duan, Xiaojun Ji, Dongchen Guo, Zhili Qi, Jin Lin, Meng Zhang, Lei Dong, Jingfeng Liu, Pei Liu, Deyuan Zhi, Guoqiang Bai, Yu Qiu, Ziqi Yang, Jing Bai, Zhuang Liu, Haizhou Zhuang, Haiman Wang, Jian Li, Mengya Zhao, Xiao Zhou, Xianqing Shi, Baning Ye, Manli Liu, Jing Wu, Yongjian Fu, Dali Long, Yu Pan, Jinlong Wang, Huaxian Mei, Songsong Zhang, Mingxiang Wen, Enyu Yang, Sijie Mu, Jianquan Li, Tingting Hu, Bingyu Qin, Min Li, Cunzhen Wang, Xin Dong, Kaiwu Wang, Haibo Wang, Jianxu Yang, Chuanyao Wang, Dongxin Wang, Nan Li, Zhui Yu, Song Xu, Lan Yao, Guo Hou, Zhou Liu, Liping Lu, Yingtao Lian, Chunting Wang, Jichen Zhang, Ruiqi Ding, Guoqing Qi, Qizhi Wang, Peng Wang, Zhaoli Meng, Man Chen, Xiaobo Hu, Xiandi He, Shibing Zhao, Lele Hang, Rui Li, Suhui Qin, Kun Lu, Shijuan Dun, Cheng Liu, Qi Zhou, Zhenzhen Chen, Jing Mei, Minwei Zhang, Hao Xu, Jincan Lin, Qindong Shi, Lijuan Fu, Qinjing Zeng, Hongye Ma, Jinqi Yan, Lan Gao, Hongjuan Liu, Lei Zhang, Hao Li, Xiaona He, Jingqun Fan, Litao Guo, Yu Liu, Xue Wang, Jingjing Sun, Zhongmin Liu, Juan Yang, Lili Ding, Lulu Sheng, Xingang Liu, Jie Yan, Quihui Wang, Yifeng Wang, Dan Zhao, Shuangping Zhao, Chenghuan Hu, Jing Li, Fuxing Deng, Haibo Qui, Yi Yang, Min Mo, Chun Pan, Changde Wu, Yingzi Huang, Lili Huang, Airan Liu, Anna-Maija Korhonen, Sanna Törnblom, Sari Sutinen, Leena Pettilä, Jonna Heinonen, Eliria Lappi, Taria Suhonen, Sari Karlsson, Sanna Hoppu, Ville Jalkanen, Anne Kuitunen, Markus Levoranta, Jaakko Långsjö, Sanna Ristimäki, Kaisa Malila, Anna Wootten, Simo Varila, Mikko J Järvisalo, Outi Inkinen, Satu Kentala, Keijo Leivo, Paivi Haltia, Jean-Damien Ricard, Jonathan Messika, Abirami Tiagarajah, Malo Emery, Aline Dechanet, Coralie Gernez, Damien Roux, Laurent Martin-Lefevre, Maud Fiancette, Isabelle Vinatier, Jean Claude Lacherade, Gwenhaël Colin, Christine Lebert, Marie-Ange Azais, Aihem Yehia, Caroline Pouplet, Matthieu Henry- Lagarrigue, Amélie Seguin, Laura Crosby, Julien Maizel, Dimitri Titeca-Beauport, Alain Combes, Ania Nieszkowska, Paul Masi, Alexandre Demoule, Julien Mayaux, Martin Dres, Elise Morawiec, Maxens Decalvele, Suela Demiri, Morgane Faure, Clémence Marios, Maxime Mallet, Marie Amélie Ordon, Laura Morizot, Marie Cantien, François Pousset, Florent Poirson, Yves Cohen, Laurent Argaud, Martin Cour, Laurent Bitker, Marie Simon, Romain Hernu, Thomas Baudry, Sylvie De La Salle, Adrien Robine, Nicholas Sedillot, Xavier Tchenio, Camille Bouisse, Sylvie Roux, Fabienne Tamion, Steven Grangé, Dorothée Carpentier, Guillaume Chevrel, Luis Ensenyat-Martin, Sophie Marque, Jean-Pierre Quenot, Pascal Andreu, Auguste Dargent, Audrey Large, Nicolas Chudeau, Mickael Landais, Benoit Derrien, Jean Christophe Callahan, Christophe Guitton, Charlène Le Moal, Alain Robert, Karim Asehnoune, Raphaël Cinotti, Nicolas Grillot, Dominique Demeure, Christophe Vinsonneau, Imen Rahmani, Mehdi Marzouk, Thibault Dekeyser, Caroline Sejourne, Mélanie Verlay, Fabienne Thevenin, Lucie Delecolle, Didier Thevenin, Bertrand Souweine, Elisabeth Coupez, Mireille Adda, Jean-Pierre Eraldi, Antoine Marchalot, Nicolas De Prost, Armand Mekontso Dessap, Keyvan Razazi, Ferhat Meziani, Julie Boisrame-Helms, Raphael Clere-Jehl, Xavier Delabranche, Christine Kummerlen, Hamid Merdji, Alexandra Monnier, Yannick Rabouel, Hassene Rahmani, Hayat Allam, Samir Chenaf, Vincenta Franja, Bertrand Pons, Michel Carles, Frédéric Martino, Régine Richard, Benjamin Zuber, Guillaume Lacave, Karim Lakhal, Bertrand Rozec, Hoa Dang Van, Éric Boulet, Fouad Fadel, Cedric Cleophax, Nicolas Dufour, Caroline Grant, Marie Thuong, Jean Reignier, Emmanuel Canet, Laurent Nicolet, Thierry Boulain, Mai-Anh Nay, Dalila Benzekri, François Barbier, Anne Bretagnol, Toufik Kamel, Armelle Mathonnet, Grégoire Muller, Marie Skarzynski, Julie Rossi, Amandine Pradet, Sandra Dos Santos, Aurore Guery, Lucie Muller, Luis Felix, Julien Bohé, Guillaume Thiéry, Nadia Aissaoui, Damien Vimpere, Morgane Commeureuc, Jean-Luc Diehl, Emmanuel Guerot, Orfeas Liangos, Monika Wittig, Alexander Zarbock, Mira Küllmar, Thomas van Waegeningh, Nadine Rosenow, Kathy Brickell, Peter Doran, Patrick T. Murray, Giovanni Landoni, Rosalba Lembo, Alberto Zangrillo, Giacomo Monti, Margherita Tozzi, Matteo Marzaroli, Gaetano Lombardi, Gianluca Paternoster, Michelangelo Vitiello, Shay McGuinness, Rachael Parke, Magdalena Butler, Eileen Gilder, Keri-Anne Cowdrey, Samantha Wallace, Jane Hallion, Melissa Woolett, Philippa Neal, Karina Duffy, Stephanie Long, Colin McArthur, Catherine Simmonds, Yan Chen, Rachael McConnochie, Lynette Newby, David Knight, Seton Henderson, Jan Mehrtens, Stacey Morgan, Anna Morris, Kymbalee Vander Hayden, Tara Burke, Matthew Bailey, Ross Freebairn, Lesley Chadwick, Penelope Park, Christine Rolls, Liz Thomas, Ulrike Buehner, Erin Williams, Jonathan Albrett, Simon Kirkham, Carolyn Jackson, Troy Browne, Jennifer Goodson, David Jackson, James Houghton, Owen Callender, Vicki Higson, Owen Keet, Clive Dominy, Paul Young, Anna Hunt, Harriet Judd, Cassie Lawrence, Shaanti Olatunji, Yvonne Robertson, Charlotte Latimer-Bell, Deborah Hendry, Agnes Mckay-Vucago, Nina Beehre, Eden Lesona, Leanlove Navarra, Chelsea Robinson, Ryan Jang, Andrea Junge, Bridget Lambert, Michel Thibault, Philippe Eckert, Sébastien Kissling, Erietta Polychronopoulos, Elettra Poli, Marco Altarelli, Madeleine Schnorf, Samia Abed Mallaird, Claudia Heidegger, Aurelie Perret, Philippe Montillier, Frederic Sangla, Seigenthaller Neils, Aude De Watteville, Mandeep-Kaur Phull, Aparna George, Nauman Hussain, Tatiana Pogreban, Steve Lobaz, Alison Daniels, Mishell Cunningham, Deborah Kerr, Alice Nicholson, Pradeep Shanmugasundaram, Judith Abrams, Katarina Manso, Geraldine Hambrook, Elizabeth McKerrow, Juvy Salva, Stephen Foulkes, Matthew Wise, Matt Morgan, Jenny Brooks, Jade Cole, Tracy Michelle Davies, Helen Hill, Emma Thomas, Marcela Vizcaychipi, Behrad Baharlo, Jaime Carungcong, Patricia Costa, Laura Martins, Ritoo Kapoor, Tracy Hazelton, Angela Moon, Janine Musselwhite, Ben Shelley, Philip McCall, Gill Arbane, Aneta Bociek, Martina Marotti, Rosario Lim, Sara Campos, Neus Grau Novellas, Armando Cennamo, Andrew Slack, Duncan Wyncoll, Luigi Camporota, Simon Sparkes, Rosalinde Tilley, Austin Rattray, Gayle Moreland, Jane Duffy, Elizabeth McGonigal, Philip Hopkins, Clare Finney, John Smith, Harriet Noble, Hayley Watson, Claire-Louise Harris, Emma Clarey, Eleanor Corcoran, James Beck, Clare Howcroft, Nora Youngs, Elizabeth Wilby, Bethan Ogg, Adam Wolverson, Sandra Lee, Susie Butler, Maryanne Okubanjo, Julia Hindle, Ingeborg Welters, Karen Williams, Emily Johnson, Julie Patrick-Heselton, David Shaw, Victoria Waugh, Richard Stewart, Esther Mwaura, Lynn Wren, Louise Mew, Sara-Beth Sutherland, Jane Adderley, Jim Ruddy, Margaret Harkins, Callum Kaye, Teresa Scott, Wendy Mitchell, Felicity Anderson, Fiona Willox, Vijay Jagannathan, Michele Clark, Sarah Purv, Andrew Sharman, Megan Meredith, Lucy Ryan, Louise Conner, Cecilia Peters, Dan Harvey, Ashraf Roshdy, Amy Collins, Malcolm Sim, Steven Henderson, Nigel Chee, Sally Pitts, Katie Bowman, Maria Dilawershah, Luke Vamplew, Elizabeth Howe, Paula Rogers, Clara Hernandez, Clara Prendergast, Jane Benton, Alex Rosenberg, Lui G. Forni, Alice Grant, Paula Carvelli, Ajay Raithatha, Sarah Bird, Max Richardson, Matthew Needham, Claire Hirst, Jonathan Ball, Susannah Leaver, Luisa Howlett, Carlos Castro Delgado, Sarah Farnell-Ward, Helen Farrah, Geraldine Gray, Gipsy Joseph, Francesca Robinson, Ascanio Tridente, Clare Harrop, Karen Shuker, Derek McLaughlan, Judith Ramsey, Sharon Meehan, Bernd Oliver Rose, Rosie Reece-Anthony, Babita Gurung, Tony Whitehouse, Catherine Snelson, Tonny Veenith, Andy Johnston, Lauren Cooper, Ron Carrera, Karen Ellis, Emma Fellows, Samanth Harkett, Colin Bergin, Elaine Spruce, Liesl Despy, Stephanie Goundry, Natalie Dooley, Tracy Mason, Amy Clark, Gemma Dignam, Geraldine Ward, Ben Attwood, Penny Parsons, Sophie Mason, Michael Margarson, Jenny Lord, Philip McGlone, Luke E. Hodgson, Indra Chadbourn, Raquel Gomez, Jordi Margalef, Rinus Pretorius, Alexandra Hamshere, Joseph Carter, Hazel Cahill, Lia Grainger, Kate Howard, Greg Forshaw, Zoe Guy, Kianoush B. Kashani, Robert C. Albright, Amy Amsbaugh, Anita Stoltenberg, Alexander S. Niven, Matthew Lynch, AnnMarie O'Mara, Syed Naeem, Sairah Sharif, Joyce McKenney Goulart, Ashita Tolwani, Claretha Lyas, Laura Latta, Azra Bihorac, Haleh Hashemighouchani, Philip Efron, Matthew Ruppert, Julie Cupka, Sean Kiley, Joshua Carson, Peggy White, George Omalay, Sherry Brown, Laura Velez, Alina Marceron, Javier A. Neyra, Juan Carlos Aycinena, Madona Elias, Victor M. Ortiz-Soriano, Caroline Hauschild, and Robert Dorfman

Subjects
Renal Replacement Therapy, Pulmonary and Respiratory Medicine, Critical Illness, Medicine and Health Sciences, Humans, Acute Kidney Injury
Published
2022
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6. Adaption of cardio-respiratory balance during day-rest compared to deep sleep—An indicator for quality of life?

Author

Dietrich von Bonin, Vincent Grote, Kurt Laederach, Max Moser, Peter Heusser, Dirk Cysarz, Ursula Wolf, and Caroline Buri

Subjects
Adult, Male, medicine.medical_specialty, Respiratory rate, Rest, Arousal, Heart Rate, Internal medicine, Heart rate, medicine, Homeostasis, Humans, Heart rate variability, Arrhythmia, Sinus, Vagal tone, Biological Psychiatry, Slow-wave sleep, Relaxation (psychology), Respiration, Cardiorespiratory fitness, Psychiatry and Mental health, Quality of Life, Cardiology, Physical therapy, Female, Sleep, Psychology
Abstract

Heart rate and breathing rate fluctuations represent interacting physiological oscillations. These interactions are commonly studied using respiratory sinus arrhythmia (RSA) of heart rate variability (HRV) or analyzing cardiorespiratory synchronization. Earlier work has focused on a third type of relationship, the temporal ratio of respiration rate and heart rate (HRR). Each method seems to reveal a specific aspect of cardiorespiratory interaction and may be suitable for assessing states of arousal and relaxation of the organism. We used HRR in a study with 87 healthy subjects to determine the ability to relax during 5 day-resting periods in comparison to deep sleep relaxation. The degree to which a person during waking state could relax was compared to somatic complaints, health-related quality of life, anxiety and depression. Our results show, that HRR is barely connected to balance (LF/HF) in HRV, but significantly correlates to the perception of general health and mental well-being as well as to depression. If relaxation, as expressed in HRR, during day-resting is near to deep sleep relaxation, the subjects felt healthier, indicated better mental well-being and less depressive moods.

Published
2014
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7. Der Kesselbaustoff : Abriß dessen was der Dampfkessel-Überwachungs-Ingenieur von der Herstellung, den Eigentümlichkeiten und der Prüfweise des Baustoffs wissen muß

Author

Max Moser and Max Moser

Subjects
Mechanical engineering
Abstract

Dieser Buchtitel ist Teil des Digitalisierungsprojekts Springer Book Archives mit Publikationen, die seit den Anfängen des Verlags von 1842 erschienen sind. Der Verlag stellt mit diesem Archiv Quellen für die historische wie auch die disziplingeschichtliche Forschung zur Verfügung, die jeweils im historischen Kontext betrachtet werden müssen. Dieser Titel erschien in der Zeit vor 1945 und wird daher in seiner zeittypischen politisch-ideologischen Ausrichtung vom Verlag nicht beworben.

Published
2013

8. Wirkungen der Therapeutischen Sprachgestaltung auf Herzfrequenz-Variabilität und Befinden

Author

D. von Bonin, P. Heuser, Max Moser, and M. Frühwirth

Subjects
Psychotherapist, Poetry, business.industry, Anthroposophy, MEDLINE, Physiology, Speech therapy, Complementary and alternative medicine, Chronobiology Phenomena, Poetry as Topic, Heart rate, otorhinolaryngologic diseases, Medicine, Heart rate variability, business
Abstract

Effects of Speech Therapy with Poetry on Heart Rate Variability and Well-Being Background: Anthroposophical Therapeutic Speech uses poems and

Published
2001
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9. Band 8, Heft 3, April 2001

Author

M. Pirlet-Gottwald, B. Rosslenbroich, M. Teut, I. Gerhard, K.W. Freivogel, Max Moser, D. von Bonin, M. Frühwirth, A. Falkenbach, and P. Heuser

Subjects
medicine.medical_specialty, Complementary and alternative medicine, business.industry, Family medicine, Medicine, business
Published
2001
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10. [Untitled]

Author

Joachim Steinbach, Ortrun Ibens, Johann Schumann, Klaus Mayr, Reinhold Letz, Max Moser, and Christoph Goller

Subjects
Selection (relational algebra), Computer science, Programming language, Local failure, Extension (predicate logic), Iterative deepening depth-first search, computer.software_genre, First-order logic, Automated theorem proving, Computational Theory and Mathematics, Artificial Intelligence, Systems architecture, Model elimination, Algorithm, computer, Software
Abstract

The model elimination theorem prover SETHEO (version V3.3) and its equational extension E-SETHEO are presented. SETHEO employs sophisticated mechanisms of subgoal selection, elaborate iterative deepening techniques, and local failure caching methods. Its equational counterpart E-SETHEO transforms formulae containing equality (using a variant of Brand’s modification method) and processes the output with the standard SETHEO system. This article gives an overview of the theoretical background, the system architecture, and the performance of both systems.

Published
1997
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13. Effects of pressure-controlled intermittent coronary sinus occlusion on regional ischemic myocardial function

Author

Roberto V. Haendchen, Gerald Maurer, Werner Mohl, Werner Heimisch, Christian Punzengruber, Samuel Meerbaum, Max Moser, Eliot Corday, and Thomas Kenner

Subjects
medicine.medical_specialty, Time Factors, Ischemia, Hemodynamics, Arterial Occlusive Diseases, Blood Pressure, Coronary Disease, Anterior Descending Coronary Artery, Dogs, Internal medicine, Occlusion, medicine, Animals, Coronary sinus, business.industry, Microcirculation, Venous blood, Pressure-controlled intermittent coronary sinus occlusion, medicine.disease, Constriction, Coronary Vessels, Myocardial Contraction, Blood pressure, Echocardiography, Anesthesia, Cardiology, Cardiology and Cardiovascular Medicine, business, Densitometry
Abstract

Pressure-controlled intermittent coronary sinus occlusion has been reported to reduce infarct size in dogs with coronary artery occlusion, possibly because of increased ischemic zone perfusion and washout of toxic metabolites. The influence of this intervention on regional myocardial function was investigated in open and closed chest dogs. In six open chest dogs with severe stenosis of the left anterior descending coronary artery and subsequent total occlusion, a 10 minute application of intermittent coronary sinus occlusion increased ischemic myocardial segment shortening from 5.5 ± 1.2 to 8.2 ± 2.6% (NS) and from −0.1 ± 2.1 to 2.3 ± 1.2% (NS), respectively.In eight closed chest anesthetized dogs, intermittent coronary sinus occlusion was applied for 2.5 hours between 30 minutes and 3 hours of intravascular balloon occlusion of the proximal left anterior descending coronary artery. Standardized two-dimensional echocardio-graphic measurements of left ventricular function were performed to derive systolic sectional and segmental fractional area changes in five short-axis cross sections of the left ventricle. Fractional area change in all the severely ischemic segments (< 5% systolic wall thickening) was −4.0 ± 4.7% at 30 minutes after occlusion, and increased with subsequent 60 and 150 minutes of treatment to 13.1 ± 3.3 and 7.0 ± 3.3%, respectively (p < 0.05). At the most extensively involved low papillary muscle level of the ventricle, regional ischemic fractional area change was increased by intermittent coronary sinus occlusion between 30 and 180 minutes of coronary occlusion from −0.4 ± 0.1 to 14.4 ± 4% (p < 0.05), whereas a further deterioration was noted in untreated dogs with coronary occlusion.Continuous arterial and coronary venous blood density measurements were performed in seven open chest dogs to determine the influence of pressure-controlled intermittent coronary sinus occlusion on ischemic myocardial washout. The arteriovenous density gradient was 0.16 ± 0.05 g/Iiter during coronary artery occlusion, and decreased to 0.05 ± 0.08 g/liter (p < 0.05) as a result of the intervention, suggesting a significant fluid washout from the myocardium. It is concluded that pressure-controlled intermittent coronary sinus occlusion provides recovery of cardiac function and that this benefit might be associated with enhanced ischemic zone washout.

Published
1985
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