Variable

Study group (IVA n = 54)

Control group (Non IVA n = 108)

p value

Age (Mean)

67.1852

68.2963

0.454

Gender (M)

81.5%

67.6%

0.064

NYHA IV

9.3%

10.2%

0.330

Previous MI

66.7%

68.5%

0.815

Preoperative unstable angina (within 31 d)

1.9%

0

0.157

Previous operation

7.4%

6.5%

0.557

Diabetes

24.1%

33.3

0.228

Hypertension

77.8

63

0.058

Preoperative GI morbidity

18.5

14.8%

0.546

Preoperative inotropes

1.9

0

0.157

Preoperative nitrates/heparin

20.4

29.6

0.210

Preoperative congestive HF

37%

26.9%

0.185

Cardiogenic shock

0

1.9

0.316

Preoperative ventilation

1.9

0.9

0.616

Logistic EuroSCORE

13.1

10.68

0.188

CPB

94.4%

88.9%

0.252

X clamp time (mean-min)

27.5

27.9

0.860

Bypass (mean-min)

58

60.2

0.664

Reopening for bleeding

3.7

4.6

0.785

Low COP

66.7

56.5

0.214

ITU recidivism

3.7

4.6

0.785

Renal complication

0

2.8%

0.218

Neurologic complication

0

0.9

0.480

Post op stay (d)

10.5

10.13

0.851

No. Of diseased vessels

2.57

2.7

0.253

LMS

41.7%

42.6%

0.911

Distal anastomoses

2.54

2.58

0.694

Perioperative IABP

5.6

13

0.148

Sternal resuturing

1.9%

1.9%

1.000

Perioperative Q wave

0

0.9%

0.480

Postoperative MI

0

3.7%

0.153

Postoperative Arrhythmia (VF)

22.2%

10.2%

0.039

Postoperative AF

25.9%

31.5%

0.467

Postoperative PPM

66.7%

28.4%

0.001

Pulmonary complications

22.2%

23.1%

0.895

Postoperative GI complications

5.6%

6.5%

0.818

Multi organ failure

0%

2.8%

0.218

In-hospital mortality

3.7%

10.2%

0.154

Cox proportional-hazards regression

Variable

Hazard Ratio

95% CI

p value

Postoperative Arrhythmia (VF)

1.524

1.268 to 1.832

<0.001