Table 3 Analysis of risk factors for POD

 Underweight

6 (12.50)

2 (4.17)

.312

 Normal

23 (47.92)

23 (47.92)

Ref

 Overweight

12 (25.00)

20 (41.67)

.292

 Obesity

7 (14.58)

3 (6.25)

.270

 Diabetes mellitus

12 (25.00)

11 (22.92)

.808

 Hypertension

32 (66.67)

30 (62.50)

.566

 Cerebrovascular disease

15 (31.25)

6 (12.50)

.039

1.594 (0.454-5.596)

.467

 CAD

20 (41.67)

13 (27.08)

.134

1.734 (0.457-6.577)

.419

 Cr, mg/dL

63.00 (50.00,83.00)

62.00 (52.25,76.75)

.463

 BUN, mg/dL

7.20 (4.93,9.08)

6.65 (4.80,8.48)

.297

 Log preoperative SUA^a

2.33 ± 0.16

2.42 ± 0.13

.015

0.028 (0.001-0.844)

.040

 ALT, U/L

12.50 (9.00,16.00)

10.00 (8.00,18.50)

.651

 AST, U/L

17.00 (14.25,20.75)

18.00 (15.25,23.00)

.829

 Dexmedetomidine

35 (72.92)

37 (77.08)

.638

 Midazolam

1 (2.08)

2 (4.17)

.571

 Droperidol

2 (4.17)

1 (2.08)

.571

 Butorphanol

6 (12.50)

7 (14.58)

.782

 Dexamethasone

11 (22.92)

13 (27.08)

.655

 Dynastat

3 (6.25)

5 (10.42)

.484

 Dezocine

2 (4.17)

6 (12.50)

.178

0.525 (0.058-4.771)

.567

 Infusion volume, mL

800.0 (700.0,1000.0)

800. 0 (600.0,1000.0)

.091

1.002 (0.999-1.005)

.186

 Hemorrhage volume, mL

200.0 (112.5,200.0)

200.0 (118.8,222.5)

.728

 Urine output, mL

200.0 (100.0,275.0)

175.0 (100.0,200.0)

.245

 Duration of anesthesia, min

65.50 (52.25,79.25)

57.00 (50.25,70.50)

.483

 Duration of surgery, min

116.21 ± 26.59

112.88 ± 23.28

.062

1.034 (1.004-1.065)

.024

36.75 ± 20.54

35.00 ± 17.29

.649

 NLR

5.24 (3.27,8.34)

3.94 (2.70,5.30)

.007

1.314 (1.053-1.638)

.015

 Hb, g/dL

101.94 ± 18.28

106.98 ± 23.02

.269

 CRP, mg/L

61.10 (46.22,97.72)

63.92 (38.12,94.43)

.292

 ALB, g/L

35.91 ± 3.81

36.80 ± 3.75

.217

 Cys C, mg/L

0.78 (0.58,0.99)

0.80 (0.65,1.06)

.695

 Blood glucose, mmol/L

5.98 (5.07,7.18)

5.64 (5.14,6.97)

.730

 Electrolyte disorder, n (%)

21 (43.75)

18 (37.50)

.549