Table 6. Univariate and multivariate regression analysis of peri-operative and postoperative risk factors for postoperative acute kidney injury.
| Postoperative AKI | |||||
| Risk factors | Unadjusted OR (95% CI) | p-value | R2 | Adjusted OR (95% CI) | p-value |
| Postoperative first-day haemoglobin | 1.11 (0.96-1.29) | 0.17 | - | - | - |
| Postoperative third-day haemoglobin | 1.04 (0.98-1.10) | 0.16 | - | - | - |
| Postoperative first-day leukocytes | 0.97 (0.91-1.03) | 0.24 | - | - | - |
| Postoperative third-day leukocytes | 0.94 (0.89-0.99) | 0.32 | - | - | - |
| Postoperative first-day CRP | 1.12 (1.09-1.15) | 0.0001 | 0.13 | 1.08 (1.05-1.11) | 0.0001 |
| Postoperative third-day CRP | 1.09 (1.05-1.13) | 0.0001 | 0.09 | 1.05 (0.99-1.11) | 0.08 |
| Postoperative first-day ESR | 1.03 (1.01-1.05) | 0.0001 | 0.10 | 1.02 (1.01-1.03) | 0.002 |
| Postoperative third-day ESR | 1.05 (1.02-1.08) | 0.0001 | 0.12 | 1.04 (1.01-1.07) | 0.004 |
| Postoperative first-day MPV | 2.03 (1.67-2.46) | 0.0001 | 0.16 | 1.45 (1.07-1.96) | 0.02 |
| Postoperative third-day MPV | 1.99 (1.60-2.49) | 0.0001 | 0.12 | 1.82 (1.36-2.44) | 0.0001 |
| Aortic cross-clamp time | 1.01 (0.99-1.03) | 0.65 | - | - | - |
| Number of anastomoses | 1.03 (0.87-1.22) | 0.75 | - | - | - |
| CPB time | 1.02 (0.99-1.05) | 0.84 | - | - | - |
| Intubation time | 1.07 (0.95-1.20) | 0.25 | - | - | - |
| Use of blood products | 0.90 (0.63-1.23) | 0.54 | - | - | - |
| Use of inotropic support | 0.82 (0.44-1.54) | 0.53 | - | - | - |
| Amount of drainage | 1.00 (0.99-1.01) | 0.34 | - | - | - |
CPB, cardiopulmonary bypass; CRP, C-reactive protein; ESR, erythrocyte sedimentation rate; AKI, acute kidney injury.