Facial mask (12 L/min) | HFNC (30 L/min) | HFNC (45 L/min) | HFNC (60 L/min) | P-value (ANOVA) | Fitting (AIC) Linear | Fitting (AIC) Non-linear | |
---|---|---|---|---|---|---|---|
PaO2 (mmHg) | 72.8±13.5 | 86.7±14.4* | 92.4±11.3* | 95.9±13.9* | <0.001 | 228.1 | 231.2 |
PaCO2 (mmHg) | 38.9±5.6 | 39.2±6.4 | 39.1±6.6 | 38.9±6.3 | n.s. | - | - |
pH | 7.47±0.1 | 7.47±0.1 | 7.47±0.1 | 7.48±0.1 | n.s. | - | - |