Table 2. Baseline characteristics of patients.
| CV group (n=57) | PV group (n=58) | P value | |
|---|---|---|---|
| Gender F/M (n) | 31/26 | 32/26 | 0.93 |
| Age, years (means±SD) | 66.13±9.12 | 63.20±8.31 | 0.07 |
| BMI, kg/m2 (means±SD) | 23.27±2.95 | 22.45±2.10 | 0.08 |
| ASA I, n (%) | 7 (12.28) | 8 (13.79) | 0.81 |
| ASA II, n (%) | 40 (70.18) | 39 (67.24) | 0.73 |
| ASA III, n (%) | 10 (17.54) | 11 (18.97) | 0.84 |
| History of hypertension, n (%) | 10 (17.54) | 12 (20.69) | 0.67 |
| History of cardiopathy, n (%) | 5 (8.77%) | 3 (5.17%) | 0.45 |
| Smoking history, n (%) | 8 (14.04%) | 9 (15.52%) | 0.82 |
PV: protective ventilation; CV: conventional ventilation; BMI: body mass index; ASA: American Society of Anesthesiologists. Data were analyzed by chi-squared test or t-test.