TABLE 2.
Characteristic | Mean ± SD | n |
---|---|---|
Age, years | 64±18 | 27 |
Men, % | 57 | 27 |
Height, cm | 163±10 | 25 |
Weight, kg | 70±16 | 25 |
Chronic obstructive pulmonary disease, % | 93 | 27 |
FVC, L | 2.48±1.02 | 20 |
FVC, % predicted | 76±25 | 20 |
FEV1, L | 1.41±0.71 | 20 |
FEV1, % predicted | 58±22 | 20 |
FEV1/FVC | 58±17 | 20 |
FEV1/FVC, % predicted | 79±23 | 20 |
Residual volume, L | 2.01±1.16 | 14 |
Diffusion capacity, mL/min/mmHg | 12.19±5.73 | 13 |
Baseline blood gases | ||
SpO2, % | 95±3 | 27 |
PaCO2, mmHg | 38±5 | 27 |
PaO2, mmHg | 75±10 | 27 |
Post-HAST blood gases | ||
SpO2, % | 89±3 | 27 |
PCO2, mmHg | 37±4 | 27 |
PO2, mmHg | 58±7 | 27 |
FEV1 Forced expiratory volume in 1 s; FVC Forced vital capacity; HAST Hypoxia altitude simulation test; PaCO2 Partial pressure of arterial carbon dioxide at sea level; PCO2 Partial pressure of carbon dioxide; PaO2 Partial pressure of arterial oxygen; PO2 Partial pressure of oxygen; SpO2 Baseline saturation of peripheral oxygen