Using univariate analysis, age, diabetes, hypertension, chronic kidney disease, occurrence of at least one episode of hypotension, hemoglobin, total leukocyte count, serum albumin, serum NGAL, urine NGAL/creatinine, serum KIM-1, urine KIM-1/creatinine, IL-10, and TNF-α were significant predictors of AKI. This evidence concerns the gene LCN2 and chronic kidney disease.