Table 1 Patients’ baseline characteristics
|  | Off-pump (n = 350) | On-pump (n = 1705) | P value |
|---|---|---|---|
Age (years) | 62.05 ± 0.54 | 61.82 ± 0.24 | 0.429 |
Female | 24% (84) | 19.7% (336) | 0.070 |
BMI > 30 (kg/m2) | 20.6% (72) | 17.8% (304) | 0.227 |
Graft number | 3 [3, 4] | 4 [4, 5] |  < 0.001 |
EF (%) | 29.1 ± 0.29 | 30.9 ± 0.11 |  < 0.001 |
Creatinine (mg/dl) | 0.96 [0.93, 1.01] | 0.96 [0.94, 1.00] | 0.798 |
eGFR (ml/min) | |||
 > 90 | 34.3% (120) | 34.8% (594) | 0.411 |
90–60 | 42.9% (150) | 39.5% (673) |  |
 < 60 | 22.9% (80) | 25.7% (438) |  |
Positive family history | 22.6% (79) | 28.3% (482) | 0.029 |
Diabetes mellitus | 48.6% (170) | 45.0% (767) | 0.220 |
Hypertension | 55.4% (194) | 49.1% (838) | 0.032 |
Dyslipidemia | 52.0% (182) | 45.7% (780) | 0.033 |
Renal Failure | 5.8% (20) | 4.2% (71) | 0.192 |
COPD | 4.9% (17) | 5.1% (87) | 0.849 |
Cardiovascular accident | 13.1% (46) | 9.9% (169) | 0.072 |
Opium user | 20.9% (73) | 21.7% (370) | 0.727 |
Current cigarette smoker | 21.4% (75) | 23.6% (402) | 0.386 |
Pre-surgery PCI | 15.1% (53) | 9.7% (165) | 0.002 |
LM stenosis > 50% | 11.7% (41) | 11.3% (197) | 0.832 |
No history | 53.7% (188) | 47.4% (808) | 0.123 |
Previous myocardial infarction | |||
 ≤ 7 days | 13.1% (46) | 13.6% (232) |  |
8–21 days | 8.6% (30) | 11.7% (199) |  |
 > 21 days | 24.6% (86) | 27.3% (466) |  |
Urgent/emergent procedure | 0.6% (2) | 1.8% (30) | 0.102 |