Fig. 3

Time course of ventilatory settings and gas exchange over the first 10 days, according to the previously identified latent classes. A Driving pressures. B Positive end-expiratory pressure (PEEP). C Tidal volumes, expressed as milliliters per predicted body weight (PBW). D PaO₂/FiO₂ ratio. E PaCO₂. F Arterial pH. Values were compared between classes using a repeated measurements analysis of the variance (ANOVA)