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Table 1 Descriptive statistics of the study cohort and results of the univariate analysis for each risk factor

From: Does sodium bicarbonate infusion really have no effect on the incidence of acute kidney injury after cardiac surgery? A prospective observational trial

 

All

Control group

NaHCO 3 group

 
 

Number

%

Number

%

Number

%

P -value

Biometric data

       

Female

90

26.32

43

25.6

47

27.01

0.86

Male

252

73.68

125

74.4

127

72.99

0.86

Comorbidities

      

IABP

1

0.29

0

0

1

0.57

0.98

Ejection fraction <35%

35

10.23

20

11.9

15

8.62

0.41

IDDM

49

14.33

23

13.69

26

14.94

0.86

COPD

56

16.37

25

14.88

31

17.82

0.56

Creatinine >1.2 mg/dl

79

23.1

40

23.81

39

22.41

0.86

Congestive heart failure

145

42.4

68

40.48

77

44.25

0.55

Surgery characteristics

      

CABG

182

53.22

83

49.40

99

56.90

0.27

Valve

53

15.5

31

18.45

22

12.64

0.27

CABG + valve

40

11.7

23

13.69

17

9.77

0.43

Other surgery

67

19.59

31

18.45

36

20.69

0.63

Repeat surgery

9

2.63

2

1.19

7

4.02

0.19

Emergency surgery

9

2.63

5

2.98

4

2.30

0.96

  1. Numbers and percentages for biometric data, comorbidities, and surgery characteristics are presented. Statistical analysis was performed using the chi2 test. IABP, intra-aortic balloon pump; IDDM, insulin-dependent diabetes mellitus; COPD, chronic obstructive pulmonary disease; CABG, coronary artery bypass graft.