Table 1 High concentration versus titrated oxygen therapy in the pre-hospital setting in patients with confirmed COPD
From: The effect of high concentration oxygen therapy on PaCO2 in acute and chronic respiratory disorders
| Â | High concentration | Titrated | Relative risk (95% CI) | Difference | P Value |
|---|---|---|---|---|---|
Mortality | 9% | 2% | 0.22 (0.5 to 0.91) | Â | 0.04 |
Ventilation | 14% | 10% | 0.67 (0.29 to 1.54) | Â | 0.34 |
Arterial blood gases†|  |  |  |  |  |
 Mean (SD) pH | 7.29 (0.15) | 7.41 (0.09) |  | 0.12 | 0.01 |
 Mean (SD) PaCO2 (mmHg) | 76.5 (50.2) | 42.9 (14.2) |  | −33.6 | 0.02 |
 Mean (SD) PaO2 (mmHg) | 98.4 (46.1) | 81.5 (30.9) |  | −16.9 | 0.46 |