Table 3.
Post-operative outcomes.
| Variable | Female | Male | p-value |
|---|---|---|---|
| Number of procedures | 4,226 | 13,137 | |
| Hematocrit, first in ICU, %, median [IQR] | 28.0 [25.0-31.0] | 32.0 [28.0-35.0] | <0.001 |
| Postoperative creatinine, mg/dL, median [IQR] | 0.9 [0.8-1.3] | 1.1 [0.9-1.4] | <0.001 |
| Outcome, % yes | |||
| Death, in hospital | 3.4 | 1.6 | <0.001 |
| Reoperation for bleeding | 1.4 | 1.7 | 0.17 |
| Prolonged ventilation | 11.1 | 7.1 | <0.001 |
| Need for ultrafiltration | 0.5 | 0.3 | 0.006 |
| Need for dialysis | 1.8 | 1.3 | 0.02 |
| Acute kidney injury, stage 2/3 | 6.0 | 4.3 | <0.001 |
| Low cardiac outputa | 6.3 | 4.6 | <0.001 |
| RBC usage | |||
| None | 44.5 | 75.7 | |
| Intra-operative only | 17.7 | 3.6 | |
| Post-operative only | 21.8 | 16.2 | |
| Intra-operative and post-operative | 16.0 | 4.5 | |
| <0.001 | |||
| Intra-operative RBC units (if transfused), median [IQR] | 2 [1-2] | 1 [0-2] | <0.001 |
| Post-operative RBC units (if transfused), median [IQR] | 2 [1-2] | 2 [1-3] | 0.76 |
| Pneumonia | 3.0 | 2.4 | 0.02 |
| New onset atrial fibrillation | 23.1 | 27.1 | <0.001 |
| Sepsis | 1.3 | 0.8 | 0.01 |
| Intensive care unit, days | |||
| <1 | 22.6 | 28.2 | |
| 1-2 | 23.1 | 25.9 | |
| 2-3 | 19.4 | 20.0 | |
| 3-4 | 12.6 | 10.2 | |
| 4+ | 22.3 | 15.8 | |
| <0.001 | |||
| Postoperative hospital days, median [IQR] | 6 [5-8] | 6 [5-7] | <0.001 |
| Readmission, % | 5.7 | 3.6 | <0.001 |