Fig. 1

Changes in urinary L-FABP from baseline (before surgery) to 3 h after surgery. Urinary L-FABP levels were significantly higher in the AKI group compared to the non-AKI group at the end of surgery and 3 h after surgery. *P < 0.05. L-FABP L-type fatty acid-binding protein, AKI acute kidney injury, CPB cardiopulmonary bypass