Table 1 General condition of patients

Age, years

53.00 (31.00, 64.75)

Male sex (n, %)

117 (63.59 %)

Oliguria (n, %)

9 (4.9 %)

Baseline serum creatinine (mg/dl)

1.12 (0.87, 2.40)

Baseline estimated GFR (ml/min/1.73 m²)

66.68 (28.10, 94.18)

Baseline 24 hUTP (g/24 h)

3.78 (1.47, 9.08)

sAlb (g/l)

33.30 (24.00, 40.25)

Hb (g/l)

119.00 (99.25, 140.00)

ALT (IU/l)

14.00 (10.00, 23.00)

AST (U/l)

17.00 (14.00, 25.75)

Ca (mmol/l)

2.08 (1.99, 2.22)

P (mmol/l)

1.32 (1.10, 1.56)

K (mmol/l)

3.90 (3.40, 4.30)

HCO₃ ^-(mmol/l)

24.20 (20.90, 26.40)

hsCRP (mg/l)

2.40 (0.80, 8.17)

Cause of AKI (n (%)

 Ischemia

40 (21.74 %)

 Nephrotoxicity

37 (20.11 %)

 Infection

42 (22.83 %)

 Glomerular disease

35 (19.02 %)

 Obstruction

21 (11.41 %)

 Others

9 (4.90 %)

AKI stage, n

 Stage 1

123

 Stage 2

26

 Stage 3

35

 Peak serum creatinine (mg/dl)

2.43 (1.41, 3.74)

 uKIM-1 (ng/mg)

2.37 (1.10, 6.22)

 FeNa ≥1 % (n (%))

126 (68.48 %)

 RFI ≥1 % (n (%))

136 (73.91 %)

 Renal AKI (n (%))

98 (53.26 %)

 Progression of renal failure (n (%))

73 (39.67 %)