Table 2 Resting pulmonary function tests in CF patients classified according to FEV 1
From: Determinants of exercise capacity in cystic fibrosis patients with mild-to-moderate lung disease
|  | All patients (n = 102) | Group 1 (n = 48) | Group 2 (n = 54) |
|---|---|---|---|
FEV1 |  | < 50% | ≥ 50% |
FEV1 a | 60 ± 28 | 35 ± 9b | 82 ± 18 |
FVCa | 75 ± 24 | 56 ± 14b | 93 ± 16 |
FEV1/FVC | 65 ± 15 | 54 ± 11b | 75 ± 10 |
RVa | 176 ± 65 | 220 ± 50b | 135 ± 48 |
DLCOa | 68 ± 18 | 56 ± 13b | 78 ± 14 |
PaO2, mm Hg | 80 ± 14 | 71 ± 10b | 87 ± 12 |
PaCO2, mm Hg | 38 ± 4 | 38 ± 5 | 37 ± 4 |
P(A-a)O2, mm Hg | 29 ± 13 | 38 ± 8b | 21 ± 12 |