Table 2. Vital capacity, maximum inspiratory pressure and maximum expiratory pressure (% predicted) over time, among patients who underwent cervical, thoracic or lumbar laminectomy.
| Preoperative | 1st PO day | 2nd PO day | |
|---|---|---|---|
| Vital capacity | |||
| Cervical | 77.1 ± 16.7 | 64.4 ± 15.5 | 71.1 ± 17 |
| Thoracic | 79.4 ± 19.8 | 58.5 ± 15.4* | 62 ± 17.5* |
| Lumbar | 84.8 ± 8.6 | 73.8 ± 8.9* | 79.1 ± 8.5 |
| Maximum inspiratory pressure | |||
| Cervical | 122.5 ± 41.1 | 75.5 ± 22.1* | 78.8 ± 19* |
| Thoracic | 148.6 ± 40.9 | 57 ± 21* | 59.4 ± 18.9* |
| Lumbar | 128.7 ± 29.7 | 73.3 ± 21.1* | 75.3 ± 21.5* |
| Maximum expiratory pressure | |||
| Cervical | 75.2 ± 17.6 | 59.9 ± 14.9* | 67.7 ± 20 |
| Thoracic | 68.4 ± 19 | 52.8 ± 19 | 57.8 ± 18 |
| Lumbar | 86.2 ± 19 | 78.6 ± 20.8 | 80.3 ± 20 |
Data are expressed as mean ± standard deviation; PO = postoperative;
*
compared with preoperative (P < 0.05).