% Predicted | ||
Sex, M/F | 42/58 | |
Age, years | 65 (8) | |
BMI, kg/m2 | 25 (5) | |
Dyspnea, mMRC* | ||
Grade 0–1 | 16 (16%) | |
Grade 2 | 49 (50%) | |
Grade 3 | 17 (17%) | |
Grade 4 | 16 (16%) | |
Lung function | ||
FEV1, litres | 1.0 (0.4) | 41.2 (13.1) |
FEV1/FVC | 0.44 (0.10) | |
DL,CO, mmol/min/kPa | 3.2 (1.3) | 40 (16) |
DL,CO/VA, mmol/min/kPa/litre | 0.7 (0.3) | 49 (20) |
TLC, litre | 7.2 (1.7) | 124 (24) |
RV, litre | 4.4 (1.4) | 201 (61) |
Blood gases and pulse oximetry at sea level | ||
PaO2, kPa | 9.0 (1.1) | |
PaCO2, kPa | 5.0 (0.6) | |
SpO2, % | 93 (3) | |
Six min walk test | ||
Distance, m | 405 (101) | |
Exercise SpO2, % | 83 (6) | |
Dyspnoea, Borg CR10 | 6.6 (2.0) | |
HAST blood gases and pulse oximetry | ||
PaO2, kPa | 6.3 (0.7) | |
PaCO2, kPa | 4.9 (0.6) | |
SaO2, % | 83 (5) | |
SpO2, % | 83 (4) |
Data are presented as n (%) and mean (SD).
↵* n=98.
BMI, body mass index; DL,CO, diffusing capacity of the lung for carbon monoxide; FEV1%predicted, forced expiratory volume in 1 s in per cent of predicted; FVC, forced vital capacity; HAST, hypoxia-altitude simulation test; mMRC, modified Medical Research Council Dyspnea Scale; PaCO2, arterial carbon dioxide pressure; PaO2, arterial oxygen pressure; RV, residual volume; SaO2, arterial oxygen saturation; SpO2, arterial oxygen saturation by pulse oximetry; TLC, total lung capacity; VA, alveolar volume.