Table 2 Preoperative characteristics of patients

Age*

61 ± 12

63 ± 9

0.651

Male

37

39

0.466

Smoking

34

29

0.012

COPD

12

14

0.834

Hypertension

25

21

0.543

Congestive heart failure (no)

2

3

0.335

Peripheral vascular disease

11

9

0.746

Cerebral vascular disease

6

7

1.00

Average body surface area (BSA m²)

1.91 ± 0.5

1.89 ± 2.2

0.855

Body mass index (kg/m²)*

33.4 ± 4.2

29.3 ± 6.8

0.455

Ejection fraction (%)*

45.6 ± 7.8

50.1 ± 3.6

0.023

Preoperative IABP

2

-

0.242

Number of diseased vessels* (range 1–4)

2.1 ± 0.4

1.9 ± 0.6

0.744

LMCA disease (>50%)

5

3

0.721

Previous MI

31

37

0.462

Previous PTCA or stent

8

11

0.631

Preoperative hematocrit value (%)

38.5 ± 3.7

40.4 ± 5.6

0.563

Preoperative hemoglobine value (gr/dL)

13.3 ± 2.3

13.9 ± 2.9

0.646