Table 4.

ABG parameters.

ABG variable	ASV + Closed-loop FiO2 (n = 30)	ASV + Manual FiO2 (n = 30)	p1
pH	7.36 (7.24–7.44)	7.36 (7.23–7.43)	0.13
PaO2 (mmHg)	97.5 (89.5–114.5)	102 (91.8–117)	0.936
PaCO2 (mmHg)	38.5 (32.8–48.3)	38 (32.7–46.5)	0.873

Data are expressed in median and interquartile range (25–75th) and compared between Closed-loop FiO2 and manual FiO2 group by Wilcoxon signed-rank test (p1).

ABG, Arterial blood gas; ASV, Adaptive support ventilation; PaO2, partial oxygen content; PaCO2, partial carbon dioxide content.