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Table 2 Operative data

From: Intraoperative central venous pressure during cardiopulmonary bypass is an alternative indicator for early prediction of acute kidney injury in adult cardiac surgery

Characteristics

High-CVP group

n = 912

Low-CVP group

n = 1136

P value

Surgical classification

   

 Isolated CABG surgery, n (%)

406(44.52)

562(49.48)

0.849

 Isolated aortic valve surgery, n (%)

305(33.44)

401(35.30)

0.903

 CABG and aortic valve surgery, n (%)

 Vascular-related surgery, n(%)

100(10.97)

101(11.07)

72(6.35)

78(6.87)

0.952

0.887

MAP during CPB, median(IQR)

54(6)

55(6)

0.366

Mean pump flow(L/min.m2), median(IQR)

2.5(0.2)

2.5(0.3)

0.676

HCT(%),median(IQR)

23(4)

24(3)

0.443

RBCs transfused(n,%)

18(1.97)

29(2.55)

0.370

Defibrillation (n)

92(10.09)

123(10.83)

0.258

Urinary volume(ml), median(IQR)

818(77)

820(75)

0.348

Furosemide prescribed(n,%)

48(5.26)

66(5.81)

0.089

Low output syndrome(n,%)

3(0.33)

8(0.70)

0.445

Cerebrovascular accidents(n)

Temporary(POCD/TIA)

56/3

72/7

0.773

Permanent(cerebral hemorrhage/stroke)

4/2

6/3

0.851

Ultrafiltrate output(ml), median(IQR)

687(36)

704(42)

0.538

  1. POCD: Postoperative cognitive dysfunction; TIA: Transient ischemic attack; HCT: Hematocrit; RBCs: Red blood cells; MAP: Mean average pressure; CABG: Coronary artery bypass grafting