Fig. 1. Diagram of the three phases of the weaning protocol for the adaptive support ventilation group (ASV;right ) and the control group (left ). *Good tolerance denotes that the criteria of poor tolerance to weaning (see appendix) were specifically ruled out before proceeding to the following phase. SIMV = synchronized intermittent mandatory ventilation; VT = tidal volume; RR = respiratory rate; Ppeak = peak airway pressure; PEEP = positive end-expiratory pressure; IPS = inspiratory pressure support.