Table 2—

Comparison of pulmonary haemodynamics in two series of chronic obstructive pulmonary disease(COPD) patients, and patients with idiopathic pulmonary arterial hypertension (iPAH) and chronic thromboembolic pulmonary hypertension (CTEPH)

Subjects n6216259500
Age yrs556650
FEV1 mL1170
FEV1 % pred27>70
Pa,O2 mmHg6056
Pa,CO2 mmHg4547
pa mmHg26255646
Ppw mmHg8.07.08.0
Cardiac output L·min−1·m−∼2.2
  • Values are presented as means, unless otherwise stated. FEV1: forced expiratory volume in one second; % pred: % predicted; Pa,O2: arterial oxygen tension; Pa,CO2: arterial carbon dioxide tension; pa: mean pulmonary artery pressure; Ppw: pulmonary wedge pressure. 1 mmHg = 0.133 kPa.