Pa o 2 on air in COPD patients when stable and when having acute exacerbations with respiratory failure
| Stable: range/ | Acute: range/ | ||
|---|---|---|---|
| mean (SD) | mean (SD) | ||
| Author | Patients (n) | (mm Hg) | (mm Hg) |
| Hutchison et al, 19644 | 9 | 59–74 | 23–56 |
| Bone et al, 19788 | 37 | 54 (8) | 41 (9) |
| Bone et al, 19788 | 13 | 55 (12) | 32 (5) |
| Agusti et al, 199912 | 18 | 61.5 (9.1) | 47.7 (8.7) |