Table 3. Ventilatory Parameters over the Course of the Experiment
* Pplat (P < 0.0006), pH (P < 0.001), and VDS/VT(P < 0.0008) had a significant group versus time interactions.
†P < 0.05 versus control.
‡P < 0.05 versus post-RM.
§P < 0.05 versus 30 min.
∥P < 0.05 versus 60 min.
RM = recruitment maneuver; Pplat = plateau pressure; Pao2= arterial oxygen tension; VD/VT= volume of dead space/tidal volume ratio; PMC= positive end-expiratory pressure (PEEP) set at the point of maximum curvature; Pflex= PEEP set at the lower inflection point + 2 cm H2O.