Fig 1.
Calculation of perioperative hemoglobin area under the curve (AUC).
Hb1: Preoperative hemoglobin
Hb2: Intraoperative hemoglobin
Hb3: Postoperative hemoglobin
AUC = Area 1 + Area 2, AUC = (A+B) + (C+D)
AUCs formula: AUCs = k (Hb1/2+Hb2+Hb3/2)
Table 1.
Patient characteristics.
Table 2.
Perioperative variables and main outcomes.
Table 3.
Univariate analysis of risk factors for AKI after cardiac surgery.
Table 4.
Anemia and hemoglobin AUC as risk factors for AKI in cardiac surgery*.
Table 5.
Multivariate regression logistic analysis of perioperative risk factors for AKI in cardiac surgery.
Table 6.
Multivariate linear regression analysis of intraoperative hemoglobin predictors in cardiac surgery adjusted by RBC transfusion.