Variable | Oxygen therapy | Baseline | 30Â min | p value |
---|---|---|---|---|
pO2; kPa | Standard oxygen therapy | 15.45 (12.17–19.33 [9.2–22.8]) | 14.20 (11.80–19.40 [9.7–35.1]) | 0.69 |
 | High-flow nasal oxygen therapy | 12.10 (10.05–15.22 [7.2–29.8]) | 13.69 (10.85–18.38 [8.5–32.3]) | 0.067 |
pCO2; kPa | Standard oxygen therapy | 6.15 (5.65–6.93 [2.0–8.7]) | 6.0 (5.65–7.30 [4.8–9.3]) | 0.0044 |
 | High-flow nasal oxygen therapy | 5.85 (5.18–6.23 [3.4–7.3]) | 5.85 (5.30–6.53 [4.1–10.2]) | 0.043 |
FiO2 | Standard oxygen therapy | 0.3 (0.3–0.3 [0.28–0.5]) | 0.3 (0.3–0.3 [0.29–1.0]) | 0.388 |
High-flow nasal oxygen therapy | 0.3 (0.3–0.3 [0.3–0.4]) | 0.3 (0.3–0.4 [0.3–0.5]) | 0.296 |