Table 3. Operative and postoperative results in each group.
| Variable* | Non-intubated segmentectomy (n=48) | Intubated segmentectomy (n=92) | P value |
|---|---|---|---|
| △WBC, ×109 | 6.08±2.77 | 7.75±3.88 | 0.004 |
| △NEU, % | 31.5±9.1 | 32.6±12.5 | 0.570 |
| Surgical duration, hour | 2.81±0.96 | 2.74±0.87 | 0.643 |
| Postoperative oral intake, hour | 6.76±1.21 | 17.58±4.66 | <0.001 |
| Peak EtCO2 during operation, mmHg | 44.81±8.07 | 33.15±3.84 | <0.001 |
| Lowest SpO2 during operation, % | 98.0±2.1 | 96.8±10.5 | 0.422 |
| Conversion to intubation, % | 1 (2.1) | NA | |
| Conversion to thoracotomy, % | 0 | 1 (1.1) | >0.99 |
| Blood loss, mL | 75.10±206.88 | 56.65±71.56 | 0.441 |
| Postoperative chest tube drainage, day | 2.25±1.36 | 3.16±3.93 | 0.047 |
| Postoperative hospital stay, day | 6.04±3.60 | 7.83±5.89 | 0.057 |
| Lymph nodes dissected | 8.06±6.22 | 8.02±4.31 | 0.969 |
| Postoperative chest tube drainage volume, mL | 383.46±47.54 | 626.98±117.18 | 0.145 |
| Anesthesia cost, ¥ | 5,757.19±194.86 | 7,401.85±1,439.61 | <0.001 |
*, continuous variables are presented as mean ± standard deviation and categorical variables as number (%). △WBC, the difference of white blood cell before and after surgery; △NEU%, the difference of neutrophil percentage before and after surgery; EtCO2, end-tidal carbon dioxide; SpO2, pulse oxygen saturation.