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1. Sedation versus general anaesthesia in endovascular therapy for anterior circulation acute ischaemic stroke: the multicentre randomised controlled AMETIS trial study protocol

Author

Franck Verdonk, Bruno Pereira, Aurélie Masgrau, Anne-Claire Lukaszewicz, Serge Molliex, Samir Jaber, Ségolène Mrozek, Emmanuel Futier, Russell Chabanne, Lionel Velly, Elodie Caumon, Emmanuel Chabert, Charlotte Fernandez-Canal, Jean-Etienne Bazin, Anna Ferrier, Claire Dahyot-Fizelier, Pierre-François Perrigault, Marc Begard, Benoît Tavernier, Vincent Degos, CHU Clermont-Ferrand, Sorbonne Université - Faculté de Médecine (SU FM), Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Physiopathologie de l'immunodépression associée aux réponses inflammatoires systémiques - EA 7426 (PI3), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Assistance Publique - Hôpitaux de Marseille (APHM), Département d'Anesthésie-Réanimation [Toulouse], Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse]-CHU Toulouse [Toulouse], CHU Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre Hospitalier Universitaire de Saint-Etienne (CHU de Saint-Etienne), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre hospitalier universitaire de Poitiers (CHU Poitiers), Pharmacologie des anti-infectieux (PHAR), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de Nutrition Humaine (UNH), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), CHU Gabriel Montpied [Clermont-Ferrand], 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), Service d'Anésthésie Réanimation [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Unité de Biostatistiques [CHU Clermont-Ferrand], Direction de la recherche clinique et de l’innovation [CHU Clermont-Ferrand] (DRCI), MORNET, Dominique, Pôle Anesthésie Réanimation [CHU de Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Assistance Publique Hôpitaux de Paris (AP-HP)Assistance Publique Hôpitaux de Paris (AP-HP), Groupe Hospitalier Pitié-Salpêtrière, Paris, France., Centre Hospitalier Universitaire de Clermont-Ferrand, Unité de Nutrition Humaine - Clermont Auvergne (UNH), Institut National de la Recherche Agronomique (INRA)-Université Clermont Auvergne (UCA), CHU Gabriel Montpied (CHU), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Service de réanimation adulte, département d'anesthésie-réanimation, CHU Clermont-Ferrand-Hôtel Dieu, Unité de biostatistiques, CHU Clermont-Ferrand-Hôpital Montpied, Physiopathologie de l'immunodépression associée aux réponses inflammatoires systémiques / Pathophysiology of Injury-induced Immunosuppression (PI3), and Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E)

Subjects
Adult, Male, Mechanical Thrombolysis, Sedation, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Conscious Sedation, Anesthesia, General, Anaesthesia, 03 medical and health sciences, 0302 clinical medicine, Modified Rankin Scale, medicine, Protocol, Humans, Multicenter Studies as Topic, General anaesthesia, 030212 general & internal medicine, Myocardial infarction, Stroke, Randomized Controlled Trials as Topic, business.industry, Endovascular Procedures, General Medicine, Thrombolysis, Perioperative, medicine.disease, stroke, 3. Good health, anaesthesia in neurology, [SDV] Life Sciences [q-bio], sedation, thrombectomy, Anesthesia, Observational study, Female, medicine.symptom, business, 030217 neurology & neurosurgery
Abstract

IntroductionEndovascular thrombectomy is the standard of care for anterior circulation acute ischaemic stroke (AIS) secondary to emergent large vessel occlusion in patients who qualify. General anaesthesia (GA) or conscious sedation (CS) is usually required to ensure patient comfort and avoid agitation and movement during thrombectomy. However, the question of whether the use of GA or CS might influence functional outcome remains debated. Indeed, conflicting results exist between observational studies with better outcomes associated with CS and small monocentric randomised controlled trials favouring GA. Therefore, we aim to evaluate the effect of CS versus GA on functional outcome and periprocedural complications in endovascular mechanical thrombectomy for anterior circulation AIS.Methods and analysisAnesthesia Management in Endovascular Therapy for Ischemic Stroke (AMETIS) trial is an investigator initiated, multicentre, prospective, randomised controlled, two-arm trial. AMETIS trial will randomise 270 patients with anterior circulation AIS in a 1:1 ratio, stratified by centre, National Institutes of Health Stroke Scale (≤15 or >15) and association of intravenous thrombolysis or not to receive either CS or GA. The primary outcome is a composite of functional independence at 3 months and absence of perioperative complication occurring by day 7 after endovascular therapy for anterior circulation AIS. Functional independence is defined as a modified Rankin Scale score of 0–2 by day 90. Perioperative complications are defined as intervention-associated arterial perforation or dissection, pneumonia or myocardial infarction or cardiogenic acute pulmonary oedema or malignant stroke evolution occurring by day 7.Ethics and disseminationThe AMETIS trial was approved by an independent ethics committee. Study began in august 2017. Results will be published in an international peer-reviewed medical journal.Trial registration numberNCT03229148.

Published
2019
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2. Personalised mechanical ventilation tailored to lung morphology versus low positive end-expiratory pressure for patients with acute respiratory distress syndrome in France (the LIVE study): a multicentre, single-blind, randomised controlled trial

Author

Jean-Michel Constantin, Matthieu Jabaudon, Jean-Yves Lefrant, Samir Jaber, Jean-Pierre Quenot, Olivier Langeron, Martine Ferrandière, Fabien Grelon, Philippe Seguin, Carole Ichai, Benoit Veber, Bertrand Souweine, Thomas Uberti, Sigismond Lasocki, François Legay, Marc Leone, Nathanael Eisenmann, Claire Dahyot-Fizelier, Hervé Dupont, Karim Asehnoune, Achille Sossou, Gérald Chanques, Laurent Muller, Jean-Etienne Bazin, Antoine Monsel, Lucile Borao, Jean-Marc Garcier, Jean-Jacques Rouby, Bruno Pereira, Emmanuel Futier, Cayot Sophie, Godet Thomas, Guerin Renaud, Verlac Camille, Chabanne Russel, Cosserant Bernard, Blondonnet Raiko, Lautrette Alexandre, Eisenmann Nathanael, Muller Laurent, Massanet Pablo, Boutin Caroline, Barbar Saber, Roger Claire, Belafia Fouad, Cisse Moussa, Monnin Marion, Conseil Matthieu, Carr Julie, De Jong Audrey, Dargent Auguste, Andreu Pascal, Lebouvrier Thomas, Launey Yoann, Roquilly Antoine, Cinotti Raphael, Tellier Anne-Charlotte, Barbaz Mathilde, Cohen Benjamin, Lemarche Edouard, Bertrand Pierre-Marie, Arberlot Charlotte, Zieleskiewicz Laurent, Hammad Emmanuelle, Duclos Garry, Mathie Calypso, Dupont Herve, Veber Benoit, Orban Jean-Christophe, Quintard Hervé, Rimmele Thomas, Crozon-Clauzel Julien, Le Core Marinne, Grelon Fabien, Assefi Mona, Petitas Frank, Morel Jerome, Molliex Serge, Hadanou Nanadougmar, CHU Clermont-Ferrand, Service d'Anésthésie Réanimation [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Caractéristiques féminines des dysfonctions des interfaces cardio-vasculaires (EA 2992), Université Montpellier 1 (UM1)-Université de Montpellier (UM), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), 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), Service de Réanimation Médicale (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre Hospitalier Régional Universitaire de Tours (CHRU Tours), Centre Hospitalier Le Mans (CH Le Mans), CHU Pontchaillou [Rennes], Nutrition, Métabolismes et Cancer (NuMeCan), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de réanimation, Centre Hospitalier Universitaire de Nice (CHU Nice)-Hôpital St Roch, Département d'anesthésie-Réanimation-Samu, CHU Rouen, Normandie Université (NU)-Normandie Université (NU), Unité de soins intensifs [Clermont Ferrand], CHU Clermont-Ferrand-CHU Gabriel Montpied [Clermont-Ferrand], Edouard Herriot Hospital, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), CHU de Saint-Brieuc, Service Anesthésie et Réanimation [Hôpital Nord - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital Nord [CHU - APHM], Centre Jean Perrin [Clermont-Ferrand] (UNICANCER/CJP), UNICANCER, Centre hospitalier universitaire de Poitiers (CHU Poitiers), Pharmacologie des anti-infectieux (PHAR), Université de Poitiers-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Amiens-Picardie, Thérapeutiques cliniques et expérimentales des infections (EA 3826) (EA 3826), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN), Department of Anesthesiology and Critical Care Medicine, Emile-Roux general hospital, Le Puy-en-Velay, Université de Montpellier (UM), Immunologie - Immunopathologie - Immunothérapie (I3), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité de Biostatistiques [CHU Clermont-Ferrand], Direction de la recherche clinique et de l’innovation [CHU Clermont-Ferrand] (DRCI), Institut Pascal (IP), SIGMA Clermont (SIGMA Clermont)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Génétique, Reproduction et Développement (GReD ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), Department of Perioperative Medicine, CHU Clermont-Ferrand, CHU Pitié-Salpêtrière [APHP], Hopital Général, Le Mans, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Clermont-Ferrand-Hôpital Gabriel Montpied, Hospital General Saint-Brieuc, Hôpital Nord [CHU - APHM]-Assistance Publique - Hôpitaux de Marseille (APHM)-Aix Marseille Université (AMU), Centre Régional de Lutte Contre le Cancer Jean Perrin, Centre hospitalier universitaire d'Amiens (CHU Amiens-Picardie), Service de réanimation adulte, département d'anesthésie-réanimation, CHU Clermont-Ferrand-Hôtel Dieu, Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Pierre et Marie Curie - Paris 6 (UPMC), University Hospital of Clermont-Ferrand, Institut Pascal - Clermont Auvergne (IP), Sigma CLERMONT (Sigma CLERMONT)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Unité de biostatistiques, CHU Clermont-Ferrand-Hôpital Montpied, Génétique, Reproduction et Développement - Clermont Auvergne (GReD ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), MORNET, Dominique, Université de Montpellier (UM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])

Subjects
Pulmonary and Respiratory Medicine, Male, medicine.medical_specialty, ARDS, medicine.medical_treatment, [SDV]Life Sciences [q-bio], law.invention, Positive-Pressure Respiration, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, law, Internal medicine, Fraction of inspired oxygen, Intensive care, medicine, Prone Position, Tidal Volume, Humans, Single-Blind Method, 030212 general & internal medicine, Prospective Studies, Precision Medicine, Lung, Positive end-expiratory pressure, Tidal volume, ComputingMilieux_MISCELLANEOUS, Proportional Hazards Models, Mechanical ventilation, Respiratory Distress Syndrome, business.industry, Hazard ratio, Middle Aged, medicine.disease, Respiration, Artificial, 3. Good health, [SDV] Life Sciences [q-bio], Intensive Care Units, Editorial Commentary, Treatment Outcome, 030228 respiratory system, Female, France, business
Abstract

The effect of personalised mechanical ventilation on clinical outcomes in patients with acute respiratory distress syndrome (ARDS) remains uncertain and needs to be evaluated. We aimed to test whether a mechanical ventilation strategy that was personalised to individual patients' lung morphology would improve the survival of patients with ARDS when compared with standard of care.We designed a multicentre, single-blind, stratified, parallel-group, randomised controlled trial enrolling patients with moderate-to-severe ARDS in 20 university or non-university intensive care units in France. Patients older than 18 years with early ARDS for less than 12 h were randomly assigned (1:1) to either the control group or the personalised group using a minimisation algorithm and stratified according to the study site, lung morphology, and duration of mechanical ventilation. Only the patients were masked to allocation. In the control group, patients received a tidal volume of 6 mL/kg per predicted bodyweight and positive end-expiratory pressure (PEEP) was selected according to a low PEEP and fraction of inspired oxygen table, and early prone position was encouraged. In the personalised group, the treatment approach was based on lung morphology; patients with focal ARDS received a tidal volume of 8 mL/kg, low PEEP, and prone position. Patients with non-focal ARDS received a tidal volume of 6 mL/kg, along with recruitment manoeuvres and high PEEP. The primary outcome was 90-day mortality as established by intention-to-treat analysis. This study is registered online with ClinicalTrials.gov, NCT02149589.From June 12, 2014, to Feb 2, 2017, 420 patients were randomly assigned to treatment. 11 patients were excluded in the personalised group and nine patients were excluded in the control group; 196 patients in the personalised group and 204 in the control group were included in the analysis. In a multivariate analysis, there was no difference in 90-day mortality between the group treated with personalised ventilation and the control group in the intention-to-treat analysis (hazard ratio [HR] 1·01; 95% CI 0·61-1·66; p=0·98). However, misclassification of patients as having focal or non-focal ARDS by the investigators was observed in 85 (21%) of 400 patients. We found a significant interaction between misclassification and randomised group allocation with respect to the primary outcome (p0·001). In the subgroup analysis, the 90-day mortality of the misclassified patients was higher in the personalised group (26 [65%] of 40 patients) than in the control group (18 [32%] of 57 patients; HR 2·8; 95% CI 1·5-5·1; p=0·012.Personalisation of mechanical ventilation did not decrease mortality in patients with ARDS, possibly because of the misclassification of 21% of patients. A ventilator strategy misaligned with lung morphology substantially increases mortality. Whether improvement in ARDS phenotyping can decrease mortality should be assessed in a future clinical trial.French Ministry of Health (Programme Hospitalier de Recherche Clinique InterRégional 2013).

Published
2019
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3. Effect of early postextubation high-flow nasal cannula vs conventional oxygen therapy on hypoxaemia in patients after major abdominal surgery: a French multicentre randomised controlled trial (OPERA)

Author

Linda Khoy-Ear, Thomas Godet, Samir Jaber, Gerald Chanques, Jean-Michel Constantin, Sacha Rozencwajg, Jean-Marc Delay, Catherine Paugam-Burtz, Emmanuel Futier, Bruno Pereira, Daniel Verzilli, Jeremie Dupuis, Jean-Etienne Bazin, Génétique, Reproduction et Développement (GReD ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020]), Hôpital Beaujon, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Diderot - Paris 7 (UPD7)-Hôpital Beaujon [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Laboratoire de Biologie Moléculaire de la Cellule (LBMC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Institute of cardiometabolism and nutrition (ICAN), Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), CHU Clermont-Ferrand, 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), Service d'Anésthésie Réanimation [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Génétique, Reproduction et Développement - Clermont Auvergne (GReD ), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne (UCA)-Centre National de la Recherche Scientifique (CNRS), Hôpital Beaujon-Université Paris Diderot - Paris 7 (UPD7)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [APHP], Service de réanimation adulte, département d'anesthésie-réanimation, CHU Clermont-Ferrand-Hôtel Dieu, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Clermont Auvergne [2017-2020] (UCA [2017-2020])-Centre National de la Recherche Scientifique (CNRS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Research Unit on Cardiovascular and Metabolic Diseases (ICAN)

Subjects
Male, Time Factors, medicine.medical_treatment, [SDV]Life Sciences [q-bio], Critical Care and Intensive Care Medicine, medicine.disease_cause, law.invention, Perioperative medicine, 0302 clinical medicine, Postoperative Complications, Randomized controlled trial, Interquartile range, law, Oxygen therapy, Abdomen, Clinical endpoint, Medicine, 030212 general & internal medicine, Hospital Mortality, Postoperative Period, Hypoxia, ComputingMilieux_MISCELLANEOUS, education.field_of_study, Postoperative pulmonary complications, Middle Aged, 3. Good health, Intention to Treat Analysis, Anesthesia, Female, France, Nasal cannula, Ventilator Weaning, medicine.medical_specialty, High-risk surgery, Population, 03 medical and health sciences, Postoperative hypoxaemia, Humans, education, Aged, business.industry, Oxygen Inhalation Therapy, Length of Stay, Respiration, Artificial, Surgery, Discontinuation, 030228 respiratory system, Airway Extubation, business, Abdominal surgery
Abstract

High-flow nasal cannula (HFNC) oxygen therapy is attracting increasing interest in acute medicine as an alternative to standard oxygen therapy; however, its use to prevent hypoxaemia after major abdominal surgery has not been evaluated. Our trial was designed to close this evidence gap. A multicentre randomised controlled trial was carried out at three university hospitals in France. Adult patients at moderate to high risk of postoperative pulmonary complications who had undergone major abdominal surgery using lung-protective ventilation were randomly assigned using a computer-generated sequence to receive either HFNC oxygen therapy or standard oxygen therapy (low-flow oxygen delivered via nasal prongs or facemask) directly after extubation. The primary endpoint was absolute risk reduction (ARR) for hypoxaemia at 1 h after extubation and after treatment discontinuation. Secondary outcomes included occurrence of postoperative pulmonary complications within 7 days after surgery, the duration of hospital stay, and in-hospital mortality. The analysis was performed on data from the modified intention-to-treat population. This trial was registered with ClinicalTrials.gov (NCT01887015). Between 6 November 2013 and 1 March 2015, 220 patients were randomly assigned to receive either HFNC (n = 108) or standard oxygen therapy (n = 112); all of these patients completed follow-up. The median duration of the allocated treatment was 16 h (interquartile range 14–18 h) with standard oxygen therapy and 15 h (interquartile range 12–18) with HFNC therapy. Twenty-three (21 %) of the 108 patients treated with HFNC 1 h after extubation and 29 (27 %) of the 108 patients after treatment discontinuation had postextubation hypoxaemia, compared with 27 (24 %) and 34 (30 %) of the 112 patients treated with standard oxygen (ARR 4, 95 % CI –8 to 15 %; p = 0.57; adjusted relative risk [RR] 0.87, 95 % CI 0.53–1.43; p = 0.58). Over the 7-day postoperative follow-up period, there was no statistically significant difference between the groups in the proportion of patients who remained free of any pulmonary complication (ARR 7, 95 % CI –6 to 20 %; p = 0.40). Other secondary outcomes also did not differ significantly between the two groups. Among patients undergoing major abdominal surgery, early preventive application of high-flow nasal cannula oxygen therapy after extubation did not result in improved pulmonary outcomes compared with standard oxygen therapy.

Published
2016
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4. Glutathione S-transferase M1 and GST T1 genetic polymorphisms and Raynaud's phenomenon in French vinyl chloride monomer-exposed workers.

Author

Fontana L, Marion MJ, Ughetto S, and Catilina P

Subjects
Aged, Case-Control Studies, France, Genotype, Humans, Male, Middle Aged, Raynaud Disease chemically induced, White People, Genetic Predisposition to Disease, Glutathione Transferase genetics, Occupational Exposure, Polymorphism, Genetic, Raynaud Disease genetics, Vinyl Chloride toxicity
Abstract

Occupational vinyl chloride monomer (VCM) exposure can induce Raynaud's phenomenon (RP). However, not all VCM workers developed RP, which suggests an underlying genetic susceptibility. Genetic polymorphisms of glutathione S-transferases (GSTs), involved in VCM metabolism, have been shown to influence certain VCM-related health effects. We have conducted a case-control study of 58 subjects with RP along with 247 subjects without RP, from a population of 305 French workers exposed or formerly exposed to VCM, to assess any association between GST M1 and GST T1 gene polymorphisms, either separately or in combination, and the presence of RP. None of the GST M1 or GST T1 genotypes were significantly associated with the presence of RP among studied VCM workers. A combination of positive genotypes for both GST M1 and GST T1 was significantly associated with RP presence, compared to the other combinations of genotypes (OR=2.1, 95% CI=1.1-3.8). OR adjusted for age, smoking status, alcohol consumption and history of treated hypertension did not reach significance (OR=2.0, 95% CI=0.9-5.2). None of the GST M1 and GST T1 genotypes seem to contribute separately to the presence of RP, suggesting that they are not, when taken alone, a major determinant of interindividual variability for VCM-induced PR. However, the combination of both positive GST M1 and GST T1 genotypes appears to contribute slightly to susceptibility to RP in VCM-exposed subjects. Nevertheless, our study-the first to examine the role of a genetic component in the occurrence of RP secondary to occupational exposure to a chemical-corroborates the previous considerations that interaction between the genetic constitution and environmental factors is of importance in determining the health-adverse effects of VCM exposure.

Published
2006
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