| Parameters | MRI/Aa (+), n = 218 | MRI/A (−), n = 206 | p value |
| Intraoperative | |||
| Graft (n) | 3.8 ± 1.4 | 3.9 ± 1.3 | 0.454 |
| Use of ITA (%)b | 96.8 | 98.1 | 0.340 |
| All arterial grafts (%) | 52.3 | 47.1 | 0.287 |
| Use of IABP (%)c | 21.6 | 19.9 | 0.720 |
| Use of pump (%) | 4.1 | 6.8 | 0.285 |
| Postoperative | |||
| Atrial fibrillation (%) | 23.9 | 20.4 | 0.414 |
| Ventilation time (h) | 13.8 ± 15.2 | 15.8 ± 12.7 | 0.210 |
| ICU stay (days) | 3.2 ± 1.9 | 3.4 ± 1.9 | 0.421 |
| Hospital stay (days) | 19.5 ± 10.9 | 21.0 ± 15.5 | 0.882 |
| Stroke (%) | 0.5 | 3.9 | 0.016 |
| Hospital death (%) | 0.5 | 1.0 | 0.614 |
| Graft patency (%)d | 98.8 | 98.1 | 0.136 |