| Parameter | Acute exacerbation | Non-acute exacerbation | Overall |
| Subjects | 27 | 28 | 55 |
| Age yrs | 61.92±5.27 | 58.15±8.94 | 60.04±7.51 |
| Males | 20 | 21 | 41 |
| Body mass index | 26.87±2.96 | 26.02±4.29 | 26.44±3.76 |
| FVC % pred | 59.32±14.02 | 60.17±21.62 | 59.76±18.20 |
| FEV1 % pred | 63.46±14.48 | 60.58±18.80 | 61.96±16.77 |
| DL,CO % pred | 30.73±10.18 | 29.13±12.87 | 29.91±11.51 |
| TLC % pred | 62.81±11.59 | 65.45±13.52 | 64.13±12.53 |
| Cytotoxic antibodies | 14 | 12 | 26 |
| LVEF % | 59.37±7.42 | 59.71±5.04 | 59.53±6.35 |
| RVSP | |||
| ECHO mmHg | 28.69±13.14 | 28.08±8.91 | 28.39±10.88 |
| RHC mmHg | 32.45±6.62 | 30.40±6.97 | 31.43±6.78 |
| mPpa mmHg | 22.47±8.17 | 19.78±4.87 | 21.13±6.80 |
| Ppcw mmHg | 7.47±4.21 | 8.00±3.35 | 7.73±3.87 |
| CO L·min−1 | 5.29±1.39 | 5.54±1.47 | 5.40±1.41 |
Data are presented as n or mean±sd. FVC: forced vital capacity; % pred: % predicted; FEV1: forced expiratory volume in 1 s; DL,CO: diffusing capacity of the lung for carbon monoxide; TLC: total lung capacity; LVEF: left ventricular ejection fraction; RVSP: right ventricular systolic pressure; RHC: right heart catheterisation; mPpa: mean pulmonary arterial pressure; Ppcw: pulmonary capillary wedge pressure; CO: cardiac output.