Variables

Preoperative

POD¹

POD²⁸

P-value

N = 342

N = 342

N = 333

ANOVA

Sodium, mmol

132. 3 ± 3.5

130.6 ± 9.4

138.2 ± 11.6

0.001

Potassium, mmol

4.2 ± 1.5

4.8 ± 1.4

3.8.2 ± 1.1

0.03

Chloride, mmol

102.3 ± 1.5

111.8 ± 1.4

99.2 ± 1.1

0.03

Bicarbonate, mmol

19.3 ± 2.7

18.1 ± 2.8

21.6 ± 5.3

<0.001

Anion gap, mEq/l

5.2 ± 1.2

1.4 ± 0.7

8.9 ± 4.5

<0.001

Urea, mmol

8.8 ± 2.6

11.3 ± 3.7

9.0 ± 3.1

0.001

Creatinine, umol

114.5 ± 14.2

143.8 ± 7.7

99.1 ± 15.8

<0.001

GFR, ml/min (CKD-EPI)

73.6 ± 9.7

143.8 ± 7.7

86.5 ± 21.8

<0.001

Total WBC, ×10⁹/l

5.6 ± 8.3

6.3 ± 4.9

5.2 ± 4.1

0.003

Neutrophils, ×10⁹/l

2.9 ± 3.3

3.9 ± 2.7

2.4 ± 1.8

<0.001

PCV, %

36.8 ± 3.6

36 2 ± 2.3

37.5 ± 4.2

0.05

Glucose, mmol

5.8 ± 2.1

5.9 ± 4.1

5.1 ± 1.9

0.1

Platelets, ×10^9/l

235.8 ± 12.4

276.4 ± 32.4

243.6 ± 5.4

0.04

Albumin, g/l

38.7 ± 5.9

39.8 ± 9.4

0.05

ESR, mm/hr

11.8 ± 5.2

11.3 ± 3.2

0.9