Table 1. Demographic and Operative Data.
| Control group (n=31) | PEEP group (n=31) | AR group (n=30) | |
|---|---|---|---|
| Age (yr) | 44±14 | 49±14 | 46±14 |
| Male/female | 9/22 | 6/25 | 13/17 |
| Body mass index (kg/m2) | 23.3±3.0 | 22.7±2.5 | 23.0±3.3 |
| Hypertension | 1 | 4 | 1 |
| Diabetes | 3 | 2 | 0 |
| FVC (%) | 97±13 | 91±18 | 91±16 |
| FEV1 (%) | 106±14 | 97±17 | 99±17 |
| FEV1/FVC (%) | 83±5 | 80±8 | 84±7 |
| DLCO (%) | 111±19 | 105±16 | 107±21 |
| Hemoglobin (g/dL) | 12.2±1.1 | 12.0±0.9 | 12.3±1.1 |
| Duration of anesthesia (min) | 126±43 | 139±62 | 143±38 |
| Duration of surgery (min) | 82±42 | 83±48 | 95±37 |
| Duration of one-lung ventilation (min) | 67±39 | 60±33 | 74±29 |
| Operation side (R/L) | 5/26 | 4/27 | 8/22 |
| Operative diagnosis | |||
| Myasthenia gravis with/without thymoma | 7/6 | 6/8 | 7/7 |
| Thymic cyst/tumors | 4/10 | 11/6 | 2/11 |
| Bronchial cyst | 3 | 0 | 3 |
| Intrathoracic chest wall lipoma | 1 | 0 | 0 |
FEV1, forced expiratory volume in 1 second; FVC, functional vital capacity; DLCO, diffusion capacity of lung for carbon monoxide; PEEP, positive end-expiratory pressure; AR, alveolar recruitment.
Values are number of patients or mean±SD.