Alexandre Demoule, Massimo Antonelli, Peter Schellongowski, Peter Pickkers, Marcio Soares, Tine Meyhoff, Jordi Rello, Philippe R. Bauer, Andry van de Louw, Virgine Lemiale, David Grimaldi, Ignacio Martin-Loeches, Martin Balik, Sangeeta Mehta, Achille Kouatchet, Andreas Barratt-Due, Miia Valkonen, Jean Reignier, Victoria Metaxa, Anne-Sophie Moreau, Gaston Burghi, Djamel Mokart, Julien Mayaux, Michael Darmon, Elie Azoulay, Karin Amrein, Thomas Staundinger, Gottfried Heinz, Gürkan Sengölge, Christian Zauner, Peter Jaksch, Fabio S. Taccone, Anne Pascale Meert, Dominique Benoît, Ulysses V.A. Silva, Ana Paula Pierre de Moraes, Thiago Lishoa, Jorge Salluh, William Viana, Guilliana Moralez, Thiago Domingos Correa, Umesh Shah, Thomas Karvunidis, Balik Martin, Katerina Russinova, Anders Perner, Tine Sylvest Meyhoff, Nielsen Jonas, Ramin Brandt Bukan, Ann M. Moeller, Lene B. Nielsen, Amélie Seguin, Akli Chermak, Nicolas Terzi, Isabelle Vinatier, Florent Wallet, Kada Klouche, Laura Platon, Benjamin Gaborit, François Barbier, Frederic Pène, Antoine Rabbat, Virginie Lemiale, Martine N'Yunga, Christophe Girault, Caroline Lemaitre, Elise Artaud-Macari, F. Bruneel, Anne Sophie Moreau, Anne Kuitunen, Brian Marsh, Mater Misericordia, Aisling Mc Mahon, Gilda Cinnella, Antonella Cotoia, Ospedali Riuniti, Lucas Montini, Angélique Spoelstra de Man, Precious Pearl Landburg, Dennis Bergmans, Pleun Hemelaar, Thomas Kaufmann, Andreas Barrat-Due, Pål Klepstad, Belen Encina, Gabriel Moreno, Llorenç Socias Crespi, Emilio Rodriguez-Ruiz, Andry Van De Louw, Philippe Bauer, Yadav Hemang, 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), Neurophysiologie Respiratoire Expérimentale et Clinique (UMRS 1158), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Medizinische Universität Wien = Medical University of Vienna, Radboud University Medical Centre [Nijmegen, The Netherlands], University of Copenhagen = Københavns Universitet (KU), Centro de Investigación Biomédica en Red Enfermedades Respiratorias (CIBERES), Mayo Clinic [Rochester], Penn State Health Milton S. Hershey Medical Center, Pennsylvania Commonwealth System of Higher Education (PCSHE)-Penn State System, Hopital Saint-Louis [AP-HP] (AP-HP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Université libre de Bruxelles (ULB), Trinity College Dublin, Charles Darwin University, University of Toronto, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Oslo University Hospital [Oslo], Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Service d'anesthésie et réanimation chirurgicale [Nantes], Hôtel-Dieu-Centre hospitalier universitaire de Nantes (CHU Nantes), King's College Hospital (KCH), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)
International audience; Background: In view of the high mortality rate of immunocompromised patients with ARDS, it is important to identify targets for improvement.Research question: This study investigated factors associated with mortality in this specific ARDS population, including factors related to respiratory mechanics (plateau pressure [Pplat,rs], compliance [Crs], and driving pressure [ΔPrs]).Study design and methods: This study consisted of a predefined secondary analysis of the EFRAIM data. Overall, 789 of 1,611 patients met the Berlin criteria for ARDS, and Pplat,rs, ΔPrs, and Crs were available for 494 patients. A hierarchical model was used to assess factors at ARDS onset independently associated with hospital mortality.Results: Hospital mortality was 56.3%. After adjustment, variables independently associated with hospital mortality included ARDS of undetermined etiology (OR, 1.66; 95% CI, 1.01-2.72), need for vasopressors (OR, 1.91; 95% CI, 1.27-2.88), and need for renal replacement therapy (OR, 2.02; 95% CI, 1.37-2.97). ARDS severity according to the Berlin definition, neutropenia on admission, and the type of underlying disease were not significantly associated with mortality. Before adjustment, higher Pplat,rs, higher ΔPrs, and lower Crs were associated with higher mortality. Addition of each of these individual variables to the final hierarchical model revealed a significant association with mortality: ΔPrs (OR, 1.08; 95% CI, 1.05-1.12), Pplat,rs (OR, 1.07; 95% CI, 1.04-1.11), and Crs (OR, 0.97; 95% CI, 0.95-0.98). Tidal volume was not associated with mortality.Interpretation: In immunocompromised patients with ARDS, respiratory mechanics provide additional prognostic information to predictors of hospital mortality. Studies designed to define lung-protective ventilation guided by these physiological variables may be warranted in this specific population.