Multivariable logistic regression analysis found that eGFR, albumin level, and De Ritis ratio at postoperative 1 day are the significant independent risk factors for postoperative AKI (OR = 0.961, 95% confidence interval [CI] = 0.946–0.977, p < 0.001; OR = 0.249, 95% CI = 0.109–0.572, p = 0.001; OR = 7.353, 95% CI = 3.967–13.630, p < 0.001, respectively). This evidence concerns the gene ALB and acute kidney injury.