Table 1 Baseline demographic and clinical characteristics of the study population
Characteristics*# | Total (n = 263) | On-pump (n = 134) | Off-pump (n = 129) | P value†|
|---|---|---|---|---|
Age, year | 61.4 ± 9.4 | 62.3 ± 9.9 | 60.6 ± 8.8 | 0.135 |
Male | 207 (78.7) | 109 (81) | 98 (76) | 0.287 |
BMI, mg/m2 | 27.6 ± 8 | 27.9 ± 10.2 | 27.2 ± 4.6 | 0.442 |
Smoking | Â | Â | Â | 0.702 |
 Current | 52 (19.8) | 28 (20.9) | 24 (18.6) |  |
 Former | 19 (7.2) | 11 (8.2) | 8 (6.2) |  |
 Never | 192 (73) | 95 (71) | 97 (75.2) |  |
Opium | Â | Â | Â | 0.850 |
 Current | 23 (8.8) | 11 (8.2) | 12 (9.4) |  |
 Former | 7 (2.7) | 3 (2.2) | 4 (3.1) |  |
 Never | 232 (88.5) | 120 (89.5) | 112 (87.5) |  |
LVEF | 44 ± 9.3 | 42.2 ± 10.3 | 45.8 ± 7.9 | 0.002 |
LVEF < 50% prior to surgery | 157 (59.7) | 88 (65.7) | 69 (53.5) | 0.044 |
Hypertension | 150 (57) | 76 (56.7) | 74 (57.4) | 0.915 |
Previous MI | 68 (25.9) | 32 (23.9) | 36 (27.9) | 0.456 |
Peripheral vascular disease | 3 (1.3) | 2 (1.7) | 1 (0.9) |  > 0.99 |
COPD | 14 (5.4) | 5 (3.8) | 9 (7) | 0.247 |
Diabetes mellitus | 124 (47.5) | 67 (50) | 57 (44.9) | 0.408 |
History of CVA | 13 (4.9) | 7 (5.2) | 6 (4.6) | 0.830 |
Left main disease | 44 (16.7) | 32 (23.9) | 12 (9.3) | 0.002 |
Dyslipidemia | 115 (43.9) | 56 (42.1) | 59 (45.7) | 0.554 |
Previous renal failure | 15 (5.7) | 8 (6) | 7 (5.4) | 0.859 |
Number of grafts | 3.5 ± 0.6 | 3.5 ± 0.6 | 3.5 ± 0.6 | 0.901 |