Table 3.
Postoperative outcomes of patients undergoing on-pump coronary artery bypass (ONCAB) and off-pump coronary artery bypass (OPCAB) surgery
| Variable | Women (n = 3,684) | Men (n = 13,368) | ||||
|---|---|---|---|---|---|---|
| ONCAB (n = 3,270) |
OPCAB (n = 414) | p-value | ONCAB (n = 11,885) | OPCAB (n = 1,483) | p-value | |
| CVA | 36 (1.1%) | 3 (0.7%) | 0.617 | 76 (0.6%) | 6 (0.4%) | 0.275 |
| TIA/RIND | 10 (0.3%) | 0 (0.0%) | 0.615 | 27 (0.2%) | 0 (0.0%) | 0.066 |
| Myocardial infarction | 98 (3.0%) | 16 (3.9%) | 0.337 | 260 (2.2%) | 37 (2.5%) | 0.449 |
| Red blood cell transfusion | 2,015 (61.6%) | 105 (25.4%) | <0.001 | 2,679 (22.5%) | 148 (10.0%) | <0.001 |
| Re-exploration for bleeding | 60 (1.8%) | 4 (1.0%) | 0.202 | 368 (3.1%) | 25 (1.7%) | 0.002 |
| Postoperative haemoglobin level (mmol/l), mean ± SD | 6.8 ± 0.7 | 7.1 ± 0.8 | <0.001 | 7.1 ± 0.8 | 7.6 ± 0.9 | <0.001 |
| 30-day mortality | 80 (2.4%) | 4 (1.0%) | 0.057 | 161 (1.4%) | 12 (0.8%) | 0.080 |
| 120-day mortality | 119 (3.6%) | 5 (1.2%) | 0.010 | 232 (2.0%) | 21 (1.4%) | 0.153 |
Categorical variables are presented as percentages; continuous variables are presented as mean ± SD or median (IQR)
IQR interquartile range (25–75%), SD standard deviation, CVA cerebrovascular accident, TIA transient ischaemic attack, RIND reversible ischaemic neurological deficit