Risk factor

Number

%

LVEF%

50% - 75%

23

79.3

36% - 49%

3

10.3

≤35%

3

10.4

LMS (left main stem)

6

20.7

Number of Diseased Vessels

3

17

58.6

4

8

27.6

1

2

6.9

2

2

6.9

Stable angina

13

44.8

Unstable angina

16

55.2

CHF

2

6.9

MI

4

13.8

Previous coronary intervention

10

34.5

Preoperative use of LMWH

9

31.0

Aspirin not stopped preoperatively

4

13.8