Table 2 Baseline demographics

n

40

40

Age (years)

66.6 ± 13.5

68.7 ± 11.7

0.472

Gender (male) (%)

21 (45.7)

25 (54.3)

0.366

BMI (kg/m²)

28.2 ± 5.9

28.1 ± 5.7

0.926

STS risk score (%)

4.6 ± 6.9

3.9 ± 4.2

0.545

Troponin I level (mean) (ng/ml)

15.6 ± 23

14.8 ± 21

0.915

NYHA class (%)

1

5 (12.5)

6 (15)

0.921

2

22 (55)

21 (52.5)

3

12 (30)

11 (27.5)

4

1 (2.5)

2 (5)

Diabetes (%)

18 (45)

22 (55)

0.371

Insulin-dependent (%)

8 (20)

7 (17.5)

0.775

Hypertension (%)

34 (85)

34 (85)

1

Congestive heart failure (%)

5 (12.5)

10 (25)

0.152

LVEF (%)

49.4 ± 12

42.4 ± 12

0.13

Mitral regurgitation > Grade 2 (%)

10 (25)

9 (22.5)

0.925

Tricuspid regurgitation > Grade 2 (%)

3 (7.5)

4 (10)

0.283

Triple-vessel disease (%)

22 (55)

30 (75)

0.061

Quadruple-vessel disease (%)

12 (22.5)

8 (22.5)

Cardiogenic shock (%)

6 (15)

5 (12.5)

0.745

Pre-operative IABP support (%)

5 (12.5)

7 (17.5)

0.531

Previous cardiac surgery (%)

3 (7.5)

1 (2.5)

0.305

Preoperative arrhythmia (%)

10 (25)

6 (15)

0.264

Preoperative Atrial Fibrillation (%)

9 (22.5)

3 (7.5)

0.060

Preoperative stroke (%)

7 (17.5)

6 (15)

0.762

Peripheral vascular disease (%)

8 (20)

8 (20)

1

Preoperative renal failure (%)

4 (10)

6 (15)

0.499

Preoperative Dialysis (%)

1 (2.5)

0 (0)

0.314

COPD (%)

3 (7.5)

5 (12.5)

0.456

Cirrhosis (%)

1 (2.5)

1 (2.5)

1