• Arnaud W Thille, Rémi Coudroy, Mai-Anh Nay, Arnaud Gacouin, Alexandre Demoule, Romain Sonneville, François Beloncle, Christophe Girault, Laurence Dangers, Alexandre Lautrette, Quentin Levrat, Anahita Rouzé, Emmanuel Vivier, Lascarrou Jean-Baptiste JB Centre Hospitalier Universitaire de Nantes, Médecine Intensive Réanimation, Nantes, France., Jean-Damien Ricard, Keyvan Razazi, Guillaume Barberet, Christine Lebert, Stephan Ehrmann, Alexandre Massri, Jeremy Bourenne, Gael Pradel, Pierre Bailly, Nicolas Terzi, Jean Dellamonica, Guillaume Lacave, René Robert, Stéphanie Ragot, Jean-Pierre Frat, and HIGH-WEAN Study Group and for the REVA Research Network.
• Centre Hospitalier Universitaire de Poitiers, Médecine Intensive Réanimation, Poitiers, France; INSERM Centre d'Investigation Clinique 1402 ALIVE, Université de Poitiers, Poitiers, France. Electronic address: aw.thille@gmail.com.
• Chest. 2020 Oct 1; 158 (4): 1446-1455.

BackgroundSpontaneous breathing trial (SBT) using a T-piece remains the most frequently performed trial before extubation in ICUs.Research QuestionWe aimed at determining whether initial SBT using pressure-support ventilation (PSV) could increase successful extubation rates among patients at high risk of extubation failure.Study Design And MethodsPost hoc analysis of a multicenter trial focusing on reintubation in patients at high-risk of extubation failure. The initial SBT was performed using PSV or T-piece according to the physician/center decision. The primary outcome was the proportion of patients successfully extubated 72 hours after initial SBT, that is, extubated after initial SBT and not reintubated within the following 72 hours.ResultsAmong the 641 patients included in the original study, initial SBT was performed using PSV (7.0 cm H2O in median without positive end-expiratory pressure) in 243 patients (38%) and using a T-piece in 398 patients (62%). The proportion of patients successfully extubated 72 hours after initial SBT was 67% (162/243) using PSV and 56% (223/398) using T-piece (absolute difference 10.6%; 95% CI, 2.8 to 28.1; P = .0076). The proportion of patients extubated after initial SBT was 77% (186/283) using PSV and 63% (249/398) using T-piece (P = .0002), whereas reintubation rates within the following 72 hours did not significantly differ (13% vs 10%, respectively; P = .4259). Performing an initial SBT using PSV was independently associated with successful extubation (adjusted OR, 1.60; 95% CI, 1.30 to 2.18; P = .0061).InterpretationIn patients at high risk of extubation failure in the ICU, performing an initial SBT using PSV may hasten extubation without an increased risk of reintubation.Copyright © 2020 American College of Chest Physicians. Published by Elsevier Inc. All rights reserved.

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