Fig. 7From: Effects of dynamic individualized PEEP guided by driving pressure in laparoscopic surgery on postoperative atelectasis in elderly patients: a prospective randomized controlled trialPaO2 variations over time among three groups. Data are presented as mean ± SDs. H0: 10 min after endotracheal intubation; H1: 10 min after pneumoperitoneum; H2: 1 h after pneumoperitoneum; H3:10 min after pneumoperitoneum stopped. †compared with the PV group, the difference was significant at 0.05 level. ‡compared with the CV group, the difference was significant at 0.05 levelBack to article page