| Rest | Exercise | |||
| sPpa (mm Hg) | 35 (15) | 55 (18)** | ||
| dPpa (mm Hg) | 12 (7) | 19 (11)** | ||
| mPpa (mm Hg) | 21 (8) | 33 (11)** | ||
| PVR (dynes·s-1·cm-5) | 276 (170) | 280 (171) | ||
| SaO2 (%) | 92 (4) | 88 (6)** | ||
| mvSaO2 (%) | 67 (7) | 51 (8)** |
Values are expressed as mean (SD).
COPD, chronic obstructive pulmonary disease; dPpa, diastolic pulmonary artery pressure; mPpa, mean pulmonary artery pressure; mvSaO2, mixed venous oxygen saturation; PVR, pulmonary vascular resistance; SaO2, arterial oxygen saturation; sPpa, systolic pulmonary artery pressure. **p<0.01, vs rest.