Table 2.
Postoperative outcome in patients undergoing coronary artery bypass graft, valve surgery, or combined cardiac surgery
| Outcome | Coronary artery bypass graft (n = 225) | Valve surgery (n = 225) | Combined surgery (n = 225) |
| Duration of postoperative ventilation (hours) | 7 (7-7) | 7 (7-7) | 7 (6–7) |
| Intensive care unit-free days | 26 ± 4 | 26 ± 4 | 24 ± 7* † |
| Hospital-free days | 21 ± 4 | 21 ± 5 | 20 ± 6* |
| Simplified Acute Physiologic Score II score | 30 (29–30) | 30 (29–30) | 30 (29–31) |
| Reoperation | 5 (2) | 5 (2) | 10 (4) |
| Cardiac complications | |||
| New-onset atrial fibrillation | 73 (32) | 86 (38) | 74 (33) |
| Ventricular arrhythmia | 14 (6) | 19 (8) | 37 (16)* † |
| Inotropic support and/or intraaortic balloon pump >24 hours | 24 (11) | 35 (16) | 44 (20)* |
| Myocardial infarction | 8 (4) | 3 (1) | 22 (10)* † |
| Noncardiac complications | |||
| Stroke | 3 (1) | 4 (2) | 3 (1) |
| Gastrointestinal | 2 (1) | 9 (4) | 4 (2) |
| Sepsis | 10 (4) | 11 (5) | 22 (10)* |
| Renal dysfunction | 25 (11) | 34 (15) | 42 (19) |
| Severe cardiac eventa | 33 (15) | 47 (21) | 75 (33)* † |
| Inhospital death | 3 (1) | 5 (2) | 10 (4) |
| Severe cardiac event and/or death | 33 (15) | 48 (21) | 77 (34)* † |
Data expressed as the median (95% confidence interval), the mean ± standard deviation, or the number (%). *P < 0.05 versus coronary artery bypass graft; †P < 0.05 versus valve surgery. aDefined as ventricular arrhythmia and/or inotropic support for at least 24 hours/intraaortic balloon pump for at least 24 hours and/or myocardial infarction (see Materials and methods).