Table 2. Intraoperative results.
| Variables | Group | P value | |
|---|---|---|---|
| TLV (n=200) | OLV (n=144) | ||
| Total anesthetic time (min), mean ± SD | 72.6±17.8 | 89.9±24.3 | <0.001 |
| Operative time (min), mean ± SD | 42.1±16.2 | 54.7±23.8 | <0.001 |
| Time from intubation to incision (min), mean ± SD | 23.6±7.0 | 27.6±9.5 | <0.001 |
| Difference in fluctuations, mean ± SD | |||
| Systolic blood pressure (mmHg) | 41.6±17.5 | 46.4±19.2 | 0.017 |
| Diastolic blood pressure (mmHg) | 35.3±13.0 | 36.4±13.1 | 0.461 |
| Heart rate | 29.1±12.2 | 30.9±12.1 | 0.173 |
| SPO2 | 0.7±6.5 | 1.9±4.1 | 0.046 |
| ETCO2 | 3.7±3.0 | 4.3±3.3 | 0.082 |
| Adhesion, n (%) | 45 (22.5) | 52 (36.1) | 0.006 |
| Thoracoscope’s diameter (mm), n (%) | <0.001 | ||
| 2 | 6 (3.1) | 6 (4.3) | |
| 2.9 | 159 (81.1) | 16 (11.6) | |
| 5 | 28 (14.3) | 108 (78.3) | |
| 10 | 3 (1.5) | 8 (5.8) | |
| Endostapler used (n), mean ± SD | 3.5±1.8 | 3.5±2.1 | 0.957 |
| Specimen resected (n), mean ± SD | 2.1±1.3 | 2.1±1.3 | 0.958 |
TLV, single lumen endotracheal tube-two lung ventilation; OLV, double lumen endotracheal tube-one lung ventilation; SD, standard deviation; SPO2, saturation of percutaneous oxygen; ETCO2, end tidal CO2.