Hemodynamicdefinitions of pulmonary hypertension types
| Definition | Mean pulmonary artery pressure (mm Hg) | Pulmonary capillary wedge pressure (mm Hg) | Pulmonary vascular resistance (Wood units) |
| Isolated precapillary PH (formerly pulmonary arterial hypertension) | 20 | <15 | 3 |
| Combined postcapillary and precapillary pulmonary hypertension (PH) | 15 | 3 | |
| Isolated postcapillary PH | 15 | <3 |