Table 1

Baseline clinical characteristics of PAH patients

Classification of PAH (n)PAH (40)
Group 1
 Idiopathic13
 Connective tissue disease21
 Portal hypertension2
 Other3
Group 4 (chronic thromboembolic)1
NYHA class2.4±0.6
6 min walk test (total distance) (m)423±96
B-type natriuretic peptide (pmol/l)345±612
Medications (%)
 Endothelin receptor antagonists41
 Calcium channel antagonists28
 Phosphodiesterase V inhibitor40

  • NYHA, New York Heart Association; PAH, pulmonary arterial hypertension.