Postoperative outcome according to the left ventricular function*
| Variables | Ejection fraction ≤35% 1342 (9.1) | Ejection fraction >35% 13477 (90.9) | p Value |
| Renal failure | 36 (2.7) | 95 (0.7) | <0.001 |
| Cardiac arrest | 31 (2.3) | 102 (0.8) | <0.001 |
| Bleeding (Re-operation) | 21 (1.7) | 141 (1.1) | 0.071 |
| Atrial fibrillation | 102 (7.6) | 786 (5.8) | 0.010 |
| Stroke | 13 (1.0) | 53 (0.4) | 0.007 |
| Pulmonary emboli | 4 (0.3) | 55 (0.4) | 0.819 |
| Heart block | 15 (1.1) | 46 (0.3) | <0.001 |
| Infectious complication | 29 (2.2) | 112 (0.8) | <0.001 |
| Prolonged ventilation | 51 (3.8) | 271 (2.0) | <0.001 |
| Re-intubation | 34 (2.6) | 159 (1.2) | <0.001 |
| Total ventilation time (h) | 15.30±2.17 | 10.11±0.22 | <0.001 |
| Total ICU time (h) | 59.00±4.12 | 41.69±0.35 | <0.001 |
| Mortality (in-hospital) | 24 (1.8) | 101 (0.7) | <0.001 |
↵* Data are presented as mean±SE or n (%).