Table 2 Parameters of spirometry and bodyplethysmography versus BOS stages
BOS | N | Mean ± SD | p-value | |
|---|---|---|---|---|
FEV1% predicted | 0 | 19 | 73.1 ± 20.3 | 0.004 |
0-p | 29 | 67.4 ± 16.8 | ||
1 | 7 | 64.9 ± 8.2 | ||
2 | 3 | 62.0 ± 5.0 | ||
3 | 3 | 29.5 ± 9.9 | ||
FVC % predicted | 0 | 19 | 74.7 ± 18.0 | 0.045 |
0-p | 29 | 77.9 ± 17.3 | ||
1 | 7 | 72.2 ± 15.4 | ||
2 | 3 | 84.6 ± 12.2 | ||
3 | 3 | 46.6 ± 10.2 | ||
FEV1/FVC % predicted | 0 | 19 | 97.9 ± 15.3 | 0.002 |
0-p | 29 | 86.9 ± 14.8 | ||
1 | 7 | 92.6 ± 20.3 | ||
2 | 3 | 73.7 ± 11.5 | ||
3 | 3 | 62.2 ± 11.7 | ||
TLC % predicted | 0 | 19 | 88.4 ± 21.8 | 0.576 |
0-p | 29 | 110.1 ± 18.4 | ||
1 | 7 | 82.2 ± 30.5 | ||
2 | 3 | 107.2 ± 26.9 | ||
3 | 3 | 82.7 ± 3.1 | ||
ITGV % predicted | 0 | 19 | 102.9 ± 35.0 | 0.140 |
0-p | 29 | 100.1 ± 31.7 | ||
1 | 7 | 89.8 ± 39.3 | ||
2 | 3 | 146.4 ± 52.5 | ||
3 | 3 | 124.3 ± 15.4 | ||
RV % predicted | 0 | 19 | 108.8 ± 49.1 | 0.233 |
0-p | 29 | 119.9 ± 54.7 | ||
1 | 7 | 139.7 ± 83.0 | ||
2 | 3 | 75.7 ± 31.3 | ||
3 | 3 | 65.7 ± 12.6 | ||
RV/TLC % predicted | 0 | 19 | 118.1 ± 31.5 | 0.014 |
0-p | 29 | 107.9 ± 33.1 | ||
1 | 7 | 106.9 ± 27.0 | ||
2 | 3 | 131.9 ± 29.8 | ||
3 | 3 | 175.0 ± 24.4 | ||
Raw (kPa*s*l−1) | 0 | 19 | 0.27 ± 0.11 | < 0.001 |
0-p | 29 | 0.31 ± 0.10 | ||
1 | 7 | 0.27 ± 0.09 | ||
2 | 3 | 0.39 ± 0.11 | ||
3 | 3 | 0.80 ± 0.19 | ||
sRaw (kPa*s) | 0 | 19 | 0.99 ± 0.65 | < 0.001 |
0-p | 29 | 1.12 ± 0.52 | ||
1 | 7 | 0.84 ± 0.36 | ||
2 | 3 | 1.85 ± 1.06 | ||
3 | 3 | 3.56 ± 1.17 |