Table 1.
Demographic and blood gas analysis before surgery in both groups.
| Variables | Group VCV (n=25) | Group PCV-VG (n=25) | P value |
|---|---|---|---|
| Age(years) | 68.96±3.40 | 69.44±3.86 | 0.64 |
| Female(%) | 10 (40) | 12 (48) | 0.38 |
| Weight | 68.35±18.86 | 73.79±23.45 | 0.25 |
| Smoke history | 18.35±7.18 | 16.97±8.98 | 0.14 |
| Body mass index | 25.49±3.12 | 24.42±2.04 | 0.16 |
| Hypertension (%) | 4 (16) | 6 (24) | 0.36 |
| FEV1 (%) | 71.57±5.59 | 71.22±2.52 | 0.78 |
| ASAi (%) | 12 (48) | 16 (64) | 0.19 |
| ASAii (%) | 13 (52) | 9 (36) | 0.20 |
| PH | 7.39±0.03 | 7.40±0.04 | 0.52 |
| PO2 (mmHg) | 80.95±7.82 | 78.06±5.34 | 0.13 |
| PCO2 (mmHg) | 40.49±3.32 | 40.48±3.47 | 0.99 |
Numerical data are expressed as means±SD. There was no significant difference in gender, age, body mass index, preoperative lung function and artery blood gas values before surgery between two groups (P>0.05). FEV1 – forced expiratory volume 1%; ASA – American Society of Anesthesiologists; PH – pondus hydrogenii; PO2 – partial pressure of oxygen; PCO2 – partial pressure of carbon dioxide.