Fig. 1

a Changes in PaO2, FiO2, and ORi. b In the ORi + SpO2 group, changes in PaO2, FiO2, and Oxygen Reserve Index overtime. c Comparison of changes in PaO2, FiO2, and ORi overtime in both groups
a Changes in PaO2, FiO2, and ORi. b In the ORi + SpO2 group, changes in PaO2, FiO2, and Oxygen Reserve Index overtime. c Comparison of changes in PaO2, FiO2, and ORi overtime in both groups