Classification of pulmonary hypertension according to the World Symposium on Pulmonary Hypertension
| Group . | Definition . |
|---|---|
| 1 | Pulmonary arterial hypertension |
| 2 | Pulmonary hypertension due to left heart disease |
| 3 | Pulmonary hypertension due to lung diseases and/or hypoxia |
| 4 | CTEPH |
| 5 | Pulmonary hypertension with unclear or multifactorial mechanisms |
| Group . | Definition . |
|---|---|
| 1 | Pulmonary arterial hypertension |
| 2 | Pulmonary hypertension due to left heart disease |
| 3 | Pulmonary hypertension due to lung diseases and/or hypoxia |
| 4 | CTEPH |
| 5 | Pulmonary hypertension with unclear or multifactorial mechanisms |