Table 2 Univariate analysis of AKI patients

Sex [male, count (%)]

27(58.70)

6(46.20)

21(63.60)

1.176

.278

Age (Mean ± SD, M)

49.95 ± 38.35

53.11 ± 39.85

48.71 ± 38.30

−.341

.730

Hospital stays [M(IQR), d]

6.00(4.25,9.00)

5.00(4.00,5.75)

8.00(5.00,10.75)

−2.122

.035

Risk factors [count (%)]

20(43.48)

8(61.50)

12(36.40)

2.405

.121

P/F (Mean ± SD, score)

242.23 ± 101.77

254.68 ± 135.56

236.37 ± 85.92

−.412

.684

PCIS (Mean ± SD, score)

89.30 ± 8.74

88.46 ± 8.69

89.64 ± 8.87

.407

.686

MAP (Mean ± SD, mmHg)

75.09 ± 14.52

77.08 ± 15.42

74.30 ± 14.32

−.579

.565

WBC[M(IQR), ×10⁹/L]

9.20(4.40,11.64)

11.40(9.74,17.21)

6.47(3.60,10.18)

−2.818

.005

Hb (Mean ± SD, g/L)

98.00 ± 23.52

89.62 ± 30.01

101.30 ± 20.01

1.541

.131

CRP[M(IQR), mg/L]

5.66(1.23,19.50)

12.73(4.98,40.11)

4.25(0.60,15.01)

−2.038

.042

Lac[M(IQR), mmol/L]

1.50(1.08,2.33)

1.50(1.00,3.22)

1.50(1.05,2.05)

−.122

.903

PCT[M(IQR), ng/ml]

0.49(0.17,2.16)

0.54(0.23,11.82)

0.45(0.15,2.04)

−1.122

.262

Cr[M(IQR), μmol/L]

27.20(19.98,32.15)

32.30(26.35,38.45)

24.50(19.85,29.80)

−1.752

.104

RI(Mean ± SD)

0.65 ± 0.11

0.71 ± 0.09

0.63 ± 0.10

−2.374

.023

Semi-quantitative score of renal perfusion [M(IQR), score]

3.00(1.25,3.00)

1.50(0.25,3.00)

3.00(2.00,3.00)

7.675

.053

RrSO2 (Mean ± SD, %)

46.03 ± 18.45

40.43 ± 20.52

48.31 ± 17.36

1.309

.197

Kidney length (Mean ± SD, cm)

6.62 ± 0.97

6.84 ± 1.25

6.51 ± 0.82

−1.015

.316

Kidney width (Mean ± SD, cm)

3.36 ± 0.51

3.42 ± 0.56

3.33 ± 0.50

−.532

0.50

PI (Mean ± SD)

1.08 ± 0.29

1.24 ± 0.33

1.02 ± 0.26

−2.017

.051

EF[M(IQR), %]

70.00(63.00,72.00)

60.50(48.50,69.75)

71.00(66.00,72.50)

−2.469

.014

VIS[M(IQR), score]

0.00(0.00,0.00)

0.00(0.00,2.50)

0.00(0.00,0.00)

−.430

.667

Intake and output volume (Mean ± SD, ml/d)

388.92 ± 544.33

352.62 ± 485.49

403.23 ± 572.30

.281

.780

SVI (Mean ± SD, ml/m²)

34.35 ± 11.63

34.08 ± 10.63

34.45 ± 12.158

.098

.922

CI (Mean ± SD, L/min/m²)

4.37 ± 1.45

4.22 ± 1.31

4.43 ± 1.52

.448

.657

SVRI (Mean ± SD, ds·m²/cm⁵)

1477.02 ± 754.69

1461.08 ± 674.512

1483.30 ± 793.84

.089

.930

SVV (Mean ± SD, %)

43.48 ± 23.95

34.62 ± 21.45

46.97 ± 24.29

1.602

.116

DO2[M(IQR), ml/min]

328.00(233.00,524.00)

328.00(200,627.50)

343.00(233.00,502.00)

−.180

.857