ALB and acute kidney injury: With regard to liver and kidney function tests, the ALB level in the AKI group was 28.94 ± 3.46 g/l, which was significantly lower than 35.17 ± 4.8 g/l in the control group (p < .05); The level of CYS-C in the AKI group was 1.66 ± 0.51 mg/l, which was significantly higher than 0.8 ± 0.43 mg/l in the control group (p < .05); The eGFR level in the AKI group was 83.50 ± 36.98 mL/min per1.73m2, which was lower than 94.61 ± 35.34 mL/min per1.73m2 in the control group; There was no significant difference in other indices between the two groups (Table 3).