Table 2. Arterial blood gas results of the 10 patients who required continuous positive airway pressure application.
| on admission (T0) | pre-CPAP (T1) | best during CPAP trial (T2) | p (T1 vs T2) | |
|---|---|---|---|---|
| FIO2% | 21 (21–21) | 65 (45–70) | 50 (50–60) | |
| pH | 7.45 (7.41–7.47) | 7.44 (7.41–7.49) | 7.44 (7.42–7.45) | 0.89 |
| PaO2 mm Hg | 80 (77.25–85.75) | 103.5 (75.5–131) | 175 (144–242.25) | 0.033 |
| PaO2/FiO2 ratio | 375.5 (366–388.5) | 153 (135–256.5) | 370 (283.5–425) | < 0.001 |
| PaCO2 mm Hg | 27 (23.25–28) | 28.75 (26–30.25) | 28 (25.75–29.63) | 0.61 |
| HCO3 mmol/L | 20.5 (15.75–21.25) | 21 (19.5–22.5) | 21 (19.25–22) | 0.38 |
| Lactates mmol/L | 1.1 (0.9–1.11) | 1.1 (0.8–1.75) | 0.9 (0.8–1.10) | 0.066 |
| SaO2% | 96 (95.75–97.4) | 98 (95.5–98.5) | 99 (99–99.5) | 0.038 |
Footnotes: Data are expressed as median (IQR). FIO2 = fractional concentration of oxygen in inspired air. PaCO2 = arterial partial pressure of carbon dioxide. PaO2 = arterial partial pressure of oxygen. HCO3 = serum bicarbonates. SaO2 = arterial oxygen saturation of haemoglobin.