Table 2 Spirometry results.
| Measurement | Before Px (n = 11) | Time of Px (n = 8) | After Px (n = 7) |
|---|---|---|---|
| FEV1, l mean (SD; range) | 1.8 (0.46; 0.77 to 2.38) | 1.4 (0.93; 0.28 to 3) | 1.2 (0.3; 0.82 to 1.56) |
| FEV1 % pred mean (SD; range) | 52.4 (11.2; 37 to 73) | 38.6 (11.8; 15 to 52) | 40.0 (9.5; 30 to 54) |
| FVC, L mean (SD; range) | 2.3 (0.82; 1.16 to 4.2) | 1.9 (0.51; 1.28 to 2.9)* | 2.0 (0.51; 1.5 to 2.88) |
| FVC % pred mean (SD; range) | 71.7 (13.5; 53 to 100) | 57.8 (10.9; 44 to 74)* | 58 (17.1; 36 to 90) |
* n = 7 (FVC missing in one individual).
Px, pneumothorax.
The median (range) rate of decline in FEV1 per year was 6% predicted (2.7 to 16.4) for the seven subjects with complete spirometry results.