Table 2 Operative details of the study subjects*.
Variables | Group 1 (EF > 50%) (n = 8204) | Group 2 (EF = 35% -50%) (n = 1717) | Group 3 (EF < 35%) (n = 364) | P Value |
|---|---|---|---|---|
Off-pump (%) | 780 (9.5) | 101 (5.9) | 21 (5.8) | < 0.0001 |
IMA (%) | 7378 (89.9) | 1494 (87.0) | 277 (76.1) | < 0.0001 |
No. anastomoses (mean ± SD) | 3.42 ± 1.1 | 3.5 ± 1.1 | 3.62 ± 1.1 | 0.295 |
Cardioplegia: | ||||
Crystalloid (%) | 2432 (36.4) | 479 (38.1) | 118 (42.0) | < 0.001 |
Blood (%) | 3299 (49.35) | 652 (51.9) | 133 (47.3) | < 0.001 |
ECC time (min) (mean ± SD) | 56.5 ± 32.7 | 61.9 ± 31.0 | 68.0 ± 35.8 | < 0.001 |
Re-exploration (%) | 428 (5.2) | 119 (6.9) | 13(3.6) | 0.009 |
Perioperative MI (%) | 240 (2.9) | 49 (2.9) | 12 (3.3) | 0.775 |
IABP (%) | 121 (1.5) | 56 (3.3) | 30 (8.2) | < 0.0001 |