Table 1.
Baseline patient characteristics
| Characteristic | Uniportal VATS (n = 73) | Two-port VATS (n = 86) | Three-port VATS (n = 98) | P-value |
|---|---|---|---|---|
| Age (Mean ± SD) | 57.12 ± 6.43 | 54.36 ± 7.6 | 61.32 ± 7.54 | <0.001 |
| Sex (%) | 0.288 | |||
| Male | 31 (42.47%) | 45 (52.33%) | 53 (54.08%) | |
| Female | 42 (51.53%) | 41 (47.67%) | 45 (45.92%) | |
| Pulmonary function (Mean ± SD) | ||||
| FVC (% predicted) | 90.83 ± 13.43 | 88.32 ± 15.87 | 85.33 ± 15.87 | 0.064 |
| FEV1 (% predicted) | 86.18 ± 12.91 | 82.70 ± 16.30 | 80.71 ± 19.08 | 0.104 |
| MVV (% predicted) | 69.26 ± 18.84 | 67.75 ± 25.10 | 70.78 ± 21.43 | 0.649 |
| Arterial blood gas analysis (Mean ± SD) | ||||
| PAO2 (mmHg) | 84.87 ± 12.62 | 83.10 ± 18.43 | 79.75 ± 14.20 | 0.085 |
| PACO2 (mmHg) | 41.26 ± 5.01 | 42.37 ± 5.85 | 42.61 ± 6.12 | 0.286 |
| SAO2 (%) | 96.55 ± 1.42 | 95.58 ± 2.47 | 95.72 ± 3.37 | 0.048 |
| Lobectomy (%) | ||||
| Right upper | 16 (21.92%) | 28 (32.56%) | 23 (23.47%) | 0.237 |
| Right middle | 4 (5.48%) | 6 (6.98%) | 11 (11.22%) | 0.352 |
| Right lower | 18 (24.66%) | 13 (15.12%) | 23 (23.47%) | 0.254 |
| Right middle and lower | 3 (4.11%) | 1 (1.16%) | 0 (%) | 0.069 |
| Left upper | 12 (16.44%) | 16 (18.6%) | 24 (24.49%) | 0.388 |
| Left lower | 19 (26.03%) | 22 (25.58%) | 16 (16.33%) | 0.207 |
| Left pneumonectomy | 1 (1.37%) | 0 (%) | 1 (1.02%) | 0.744 |
FVC forced vital capacity, FEV1 forced expiratory volume in 1 second, MVV maximal ventilatory volume, PAO 2 partial pressure of oxygen in artery, PACO 2 partial pressure of carbon dioxide in artery, SAO 2 arterial oxygen saturation