Age, years | 69 (43–83) |
Male | 40 (100) |
Current smoker | 6 (15) |
Past smoker | 34 (85) |
Comorbid conditions | 26 (65) |
Cardiovascular disease | 21 (52) |
Diabetes mellitus | 6 (15) |
Renal failure | 2 (5) |
Exacerbations in the past year | |
<4 episodes | 19 (48) |
>4 episodes | 21 (52) |
Exacerbation criteria | |
Increased dyspnoea | 40 (100) |
Increased sputum volume | 10 (25) |
Purulent sputum | 22 (55) |
Fever at admission | 12 (30) |
Domiciliary oxygen | 10 (25) |
Oral steroid treatment* | 9 (22) |
FEV1% predicted | 37 (19–72) |
FVC% predicted | 69 (64–89) |
FEV1/FVC% | 42 (34–67) |
White cell count, ×109/l | 11590 (5100–22700) |
PaO2, mm Hg | 62 (40–75) |
PaCO2, mm Hg | 44 (23–62) |