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Table 1 Comparisons of demographic and clinical variables in patients with and without postoperative AKI in isolated CABG cohort

From: Predictors of acute kidney insufficiency post isolated coronary artery bypass grafting surgery

Variables

No AKI group

(N 1813)

AKI group

(N 101)

p value

Age, years

   

 ≤ 65

925 (51.02)

30 (29.7)

 

 65–80

788 (43.5)

56 (55.5)

 

 > 80

100 (5.5)

15 (14.9)

< 0.0001

Gender (male)

1490 (77.9)

80 (79.2)

0.44

Body mass index (kg/m2)

30.2 ± 17.3

30.1 ± 14.9

0.99

Positive smoking history

1231 (67.9)

59 (58.4)

0.04

Family history of IHD

803 (44.4)

45 (44.6)

0.96

Hypertension

1488 (82.1)

96 (95.1)

0.0008

Dyslipidemia

1529 (84.4)

88 (87.1)

0.45

Respiratory disease

323 (16.9)

21 (20.8)

0.67

Diabetes mellitus

770 (42.5)

65 (64.4)

< 0.0001

Cerebrovascular disease

152 (8.4)

14 (13.9)

0.057

Peripheral vascular disease

149 (8.2)

19 (18.8)

0.0003

Acute myocardial infarction < 30 days

1133 (62.5)

75 (74.3)

0.017

Moderate to severe LVD

304 (16.8)

24 (24.1)

0.06

Congestive heart failure

232 (12.8)

31 (30.7)

< 0.0001

Cardiogenic shock

39 (2.2)

10 (9.9)

< 0.0001

NYHA grade III & IV

137 (7.6)

23 (22.8)

< 0.0001

Urgency of surgery

   

 Elective

1225 (67.6)

65 (64.4)

 

 Urgent

507 (28.0)

25 (24.8)

 

 Emergent

80 (4.4)

8 (7.9)

< 0.0001

CPB time (min)

100.76 ± 47.39

106 ± 56.8

0.23

Aortic cross clamp time (min)

71.3 ± 31.2

69.3 (39.3)

0.54

Intra-aortic balloon pump

100 (5.5)

20 (19.8)

< 0.0001

  1. Categorical variables are presented as number (%) and continuous variables as mean (SD)
  2. AKI acute kidney insufficiency, CABG coronary artery bypass grafting, IHD ischemic heart disease, LVD left ventricular dysfunction, NYHA New York Heart Association, CPB cardiopulmonary bypass