Table 2 Preoperative factors used in logistic regression analyses
| Preoperative factors | Intraoperative factors |
|---|---|
| Age | Duration of cardiopulmonary bypass |
| Gender | Cross-clamp time |
| Hypertension | Circulatory arrest time ≥ 40 minutes |
| Diabetes | Core temperature during circulatory arrest |
| Left ventricular ejection fraction | Deep hypothermic circulatory arrest |
| ASA classification | Modified hypothermic circulatory arrest |
| Preoperative PaO2/FiO2 Ratio | |
| Renal insufficiency | |
| Liver function impairment |