Figure 3
From: Alveolar instability caused by mechanical ventilation initially damages the nondependent normal lung
Change in alveolar stability over time. The change in alveolar stability (inspiration–expiration percentage change, %I - E) was monitored over time in four groups: Group I, dependent + low positive end-expiratory pressure (PEEP) (n = 5); Group II, nondependent + low PEEP (n = 4); Group III, dependent + high PEEP (n = 5); and Group IV, nondependent + high PEEP (n = 5). Data are the mean ± standard error. # P < 0.05, Group IIversus Groups III and IV; *P < 0.05, Group II versus Group I.