Table 2 Preoperative, operative and postoperative variables of the patients.
Off-pump (n = 142) | On-pump (n = 56) | Odds ratio | P value | |
|---|---|---|---|---|
Onset of chest pain (hour) | 5.53 (± 1.47) | 5.94 (± 1.99) | - | 0.113 |
Chest pain ≤ 6 h | 76.1% | 60.7% | 1.253 | 0.036 |
Chest pain > 6 h | 23.9% | 37.5% | 0.638 | 0.080 |
Angiography/PCI to operation time (minute) | 75.23 (± 23.53) | 73.62 (± 21.34) | - | 0.582 |
Euroscore | 5.47 (± 1.64) | 7.08 (± 2.15) | - | 0.000 |
Ejection fraction (%) | 43.08 (± 7.61) | 42.75 (± 8.52) | - | 0.788 |
IABP | ||||
• Preoperative insertion | 2 patients (1.4%) | 2 patients (3.6%) | 0.377 | 0.053 |
• Postoperative insertion | 3 patients (2.1%) | 5 patients (8.9%) | 0.986 | |
Postoperative inotrope (%) | 9.2 | 16.1 | 0.526 | 0.208 |
Postoperative atrial fibrillation (%) | 10.6 | 19.6 | 0.483 | 0.104 |
Peak Troponin-I level prior CABG (ng/mL) | 2.05 (± 1.88) | 2.56 (± 2.02) | - | 0.096 |
Number of grafts | 2.57 | 2.73 | - | 0.166 |
• One graft | 8 (5.6%) | 2 (3.6%) | 0.058 | |
• Two grafts | 54 (38%) | 17 (30.4%) | 0.000 | |
• Three grafts | 70 (49%) | 31 (55.4%) | 0.000 | |
• Four grafts | 10 (7%) | 6 (10.7%) | 0.317 | |
Operation time (min) | 82.78 (± 18.47) | 164.22 (± (27.12) | - | 0.000 |
ICU stay (day) | 1.16 (± 0.36) | 1.35 (± 0.58) | - | 0.006 |
Hospital stay (day) | 6.13 (± 1.37) | 7.28 (± 1.61) | - | 0.000 |
Conversion to on-pump | 0 | - | - | - |
Surgical revision | 2 patients (1.4%) | 2 patients (3.6%) | 0.386 | 0.317 |
Mortality | 5 patients (3.5%) | 3 patients (5.4%) | 0.645 | 0.690 |