Table 3 Perioperative Pao2 to Fio2 ratio from arterial blood gas analysis
Low-Fio2 group (n = 44) | High-Fio2 group (n = 46) | P-value | |
|---|---|---|---|
Baseline, preoperative | 430.0 (385.0–492.5) | 438.0 (370.0–485.0) | 0.422 |
Intraoperative | |||
20 min after induction | 490.0 (410.0–531.2) | 437.5 (375.0–530.0) | 0.364 |
20 min after Trendelenburg | 405.0 (111.4) | 408.6 (123.5) | 0.884 |
20 min after supine | 471.8 (117.4) | 490.8 (142.2) | 0.492 |
Post-anesthesia care unit, postoperative | 457.5 (397.5–552.5) | 455.0 (400.0–495.0) | 0.448 |