Table 3.
Comparison of pulmonary hypertension in chronic hypoxic lung disease (COPD) to primary pulmonary hypertension
| PPH | COPD | |
| Number of patients | 187 | 62 |
| Number of women | 110 | 2 |
| Age (years) | 36 (15) | 55 (8) |
| FEV1 (ml) | 1170 (390) | |
| TLC (% of predicted) | 110 (15) | |
| Pao2 (mm Hg) | 60 (9) | |
| Paco2(mm Hg) | 45 (6) | |
| PAP (mm Hg) | 60 (15) | 26 (6) |
| PCP (mm Hg) | 8 (4) | 8 (2) |
| Q (l/mm/m2) | 2.27 (0.90) | 3.8 (1.1) |
| PVR (mm Hg/l/min/m2) | 26 (14) | 4.8 (1.4) |
Values presented as mean (SD).
Primary pulmonary hypertension data are from the American NIH Registery; COPD data are from Weitzenblum et al.9
COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in one second; PAP, pulmonary artery mean pressure; PCP, pulmonary capillary wedge pressure; PPH, primary pulmonary hypertension; PVR, pulmonary vascular resistance; Q, cardiac output; TLC, total lung capacity.