Table 5. Spirometry parameters before surgery and 1 year after surgery.
| Parameter | Pre-surgery (N=45) | Post-surgery (N=48) | P value |
|---|---|---|---|
| FVC (%) | 61.4±12.8 | 80.0±10.9 | <0.001 |
| FEV1 (%) | 54.4±11.5 | 73.4±12.1 | <0.001 |
| FEV1/FVC (%) | 77.4±14.8 | 78.4±7.9 | 0.98 |
| FEF 25–75 (%) | 42.8±14.0 | 57.0±18.1 | <0.001 |
| PEF (%) | 56.8±14.8 | 69.1±17.5 | <0.001 |
| Restrictive lung disease | 31 (68.9) | 18 (37.5) | 0.008 |
| Severity of restrictive disease | 31 | 18 | 0.01 |
| Mild | 10 (32.3) | 16 (88.9) | |
| Moderate | 21 (67.7) | 2 (11.1) | |
| Obstructive lung disease | 12 (26.7) | 5 (10.4) | 0.03 |
| Severity of obstructive disease | 12 | 5 | 0.76 |
| Mild | 4 (33.3) | 4 (80.0) | |
| Moderate | 5 (41.7) | 1 (20.0) | |
| Severe | 3 (25.0) | 0 (0.0) |
Statistics are presented as mean ± standard deviation and n (%). FVC, forced vital capacity; FEV1, forced expiratory volume in 1 second; FEF 25–75, forced expiratory flow between 25% and 75% of vital capacity; PEF, peak expiratory flow.