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Table 1 Preoperative patient characteristics
| Variable | Group on-pump (n = 120) | Group off-pump (n = 92) | Pvalue |
|---|---|---|---|
| Clinical demographics | |||
| Age (y) | 65 ± 8 | 63 ± 9 | NS |
| Female sex | 20 (16.6%) | 12 (13.0%) | NS |
| Coronary risk factors | |||
| Hypertension | 75 (62.5%) | 59 (64.1%) | NS |
| Diabetes | 100 (83.3%) | 76 (82.6%) | NS |
| Hyperlipidemia | 57 (47.5%) | 50 (54.3%) | <0.05 |
| Smoking | 55 (45.8%) | 41 (44.6%) | NS |
| Peripheral vascular disease | 22 (18.3%) | 17 (18.5%) | NS |
| Previous renal impairment | 6 (5.0%) | 4 (4.3%) | NS |
| Cerebrovascular accident | 2 (1.7%) | 8 (8.7%) | <0.001 |
| COPD | 5 (4.2%) | 22 (23.9%) | <0.001 |
| Calcified ascending aorta | 2 (1.7%) | 45 (48.9%) | <0.001 |
| Cardiac profile | |||
| Previous myocardial infarction | 77 (64.2%) | 59 (64.1%) | NS |
| Unstable angina | 87 (72.5%) | 68 (73.9%) | NS |
| previous PTCA | 19 (15.8%) | 15 (16.3%) | NS |
| Mean ejection fraction | 0.50 ± 0.12 | 0.49 ± 0.14 | NS |
| Poor ejection fraction (<0.35) | 13 (10.8%) | 9 (9.8%) | NS |
| Left main disease | 23 (19.2%) | 17 (18.5%) | NS |
| RCA Critical stenosis >90% | 68 (56.7%) | 89 (96.7%) | <0.001 |
| Number of diseased vessels | 3.8 ± 0.8 | 3.9 ± 0.9 | NS |
