| Baseline | After salbutamol | p-value |
Heart rate beat·min−1 | 83±12 | 84±12 | ns |
Mean pulmonary arterial pressure mmHg | 6.8±1.5 | 6.8±1.5 | ns |
Mean systemic arterial pressure mmHg | 12.1±1.5 | 12.2±1.7 | ns |
Cardiac output L·min−1 | 3.9±1.4 | 4.2±1.4 | p=0.0003 |
Stroke volume mL | 48±18 | 53±19 | p=0.04 |
Pulmonary vascular resistance dynes×s×cm−3 | 1011±495 | 910±411 | p=0.015 |
Systemic vascular resistance dynes×s×cm−3 | 1992±857 | 1817±697 | p=0.005 |
Right arterial pressure mmHg | 0.9±0.8 | 0.9±0.8 | ns |
Pulmonary capillary wedge pressure mmHg | 0.9±0.4 | 1.1±0.4 | 0.01 |
Oxygen tension in arterial blood mmHg | 9.0±2.4 | 9.7±1.6 | 0.03 |
Carbon dioxide tension in arterial blood mmHg | 4.0±0.4 | 4.0±0.4 | ns |
pH | 7.45±0.02 | 7.46±0.02 | ns |
Alveolo-arterial oxygen tension mmHg | 6.0±2.5 | 5.1±2.9 | p=0.004 |
Mixed venous oxygen saturation % | 60±9 | 61±9 | p=0.046 |