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. 2020 Oct 1;13(10):2544–2553.

Figure 4.

Figure 4

Comparison of oxygenation index, respiratory index, and P(A-a)O2 levels at different time points. A: Comparison of OI at different time points; B: Comparison of RI at different time points; C: Comparison of P(A-a)O2 at different time points. Compared with control group, *P<0.05. T0: before anesthesia induction, T1: immediately after endotracheal intubation, T2: 1 h after one-lung ventilation; T3: 10 min before the end of operation. OI: oxygenation index; RI: respiratory index; P(A-a)O2: alveolar-arterial oxygen pressure difference.