Table 4.
Postoperative lung function changes depending on severity of COPD at admission in the Group A.
| FEV1<50% mean [95% CI] (n=7) | 50%≤FEV1<80% mean [95% CI] (n=39) | FEV1≥80% mean [95% CI] (n=10) | p-value | ||
|---|---|---|---|---|---|
| Δ[T2-T1] | FEV1 (mL) | 427 [27, 827] | 328 [242, 414] | 235 [74, 396] | 0.631 |
| FEV1 % pred. | 40 [-4, 86] | 18 [14, 22] | 9 [3, 16] | 0.107 | |
| FEF50 (%) | 7 [-14, 27] | 3 [0, 6] | 3 [1,6] | 0.857 | |
| FEF25 (%) | 2 [-21, 24] | 4 [1, 7] | -4 [-15, 6] | 0.220 | |
| Δ[T2- T3] | FEV1 (mL) | 442 [180, 703] | 580 [491, 667] | 749 [511, 987] | 0.152 |
| FEV1 % pred. | 25 [14, 36] | 26 [22, 30] | 27 [19, 34] | 0.980 | |
| FEF50 (%) | 9 [3, 16] | 11 [7, 15]* | 22 [16, 28]* | 0.004 | |
| FEF25 (%) | 6 [2, 11] | 9 [5, 14]† | 21 [12, 31]† | 0.039 | |
COPD=chronic obstructive pulmonary disease; Δ=difference between two measured values; T1=values before preoperative physiotherapy; T2=values after preoperative physiotherapy; T3=values after lung resection; FEV1=forced expiratory volume in the first second; FEF=forced expiratory flow.
*
p <0.001, for subgroups of mild vs. moderate COPD patients.
†
p=0.012, for subgroups of mild vs. moderate COPD patients.