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Table 1 Baseline and procedural characteristics after matching

From: Acute kidney injury following on-pump or off-pump coronary artery bypass grafting in elderly patients: a retrospective propensity score matching analysis

variable

A group

B group

p value

(n = 466) No. (%)

(n = 466) No. (%)

Female gender

84(18.0)

89(19.1)

0.736

Age, y

73.2 ± 7.2

74.0 ± 8.4

0.119

Body mass index, kg/m2

25.6 ± 4.3

25.1 ± 4.7

0.091

DM

 Insulin-dependent

74(15.9)

67(14.4)

0.583

 Non-insulin-dependent

68(14.6)

61(13.1)

0.569

Hypertension

246(52.8)

237(50.9)

0.6

Hyperlipemia

137(29.4)

123(26.4)

0.342

GFR(ml/min/1.73m2)

81.3 ± 16.4

80.4 ± 15.7

0.392

COPD

38(8.2)

44(9.4)

0.563

Previous

 Cerebal infarction

24(5.2)

29(6.2)

0.572

 Myocardial infarction

75(16.1)

66(14.2)

0.465

 PCI

81(17.4)

73(15.7)

0.537

LVEF

  

0.33

  > 0.50

363(77.9)

375(80.5)

 

 0.30–0.50

98(21.0)

87(18.7)

 

  < 0.30

5(1.1)

4(0.9)

 

Extent of CAD

  

0.187

 1 vessel

17(3.6)

25(5.4)

 

 2 vessel

48(10.3)

54(11.6)

 

 3 vessel

401(86.1)

387(83.0)

 

 LM

142(30.1)

122(26.2)

0.167

EuroScoreII

2.6 ± 1.2

2.5 ± 1.3

0.223

Distal anastomosis

3.4 ± 0.9

3.3 ± 1.1

0.129

 LIMA

438(94.0)

444(95.3)

0.467

 Radial Artery

72(15.5)

63(13.5)

0.457

CPB time(min)

78.4 ± 21.7

  1. DM diabetes mellitus, PCI percutaneous coronary intervention, COPD chronic obstructive pulmonary disease, GFR glomerular filtration rate, LVEF left ventricular ejection fraction, CAD coronary artery disease, LIMA left internal mammary artery, CPB cardiopulmonary bypass