The Effect of Coronary Arteries diameter on the Incidence of Postoperative Atrial Fibrillation

Predisposing Factors

• Hx of AF• COPD• Intubation >24 hr• RCA lesion• High BNP level• Long P Wave

• Long cross clamp time

• Severe hypotermia• Reaction of anterior

epicardial fat pad• Right atrial pacing

Evaluated Factors

• Age • DM• HTN• CS• LA volume• RA volume• LV end-diastolic volume• RV end-diastolic volume • PA pressure

• LM lesion• LAD lesion• LCx lesion• RCA lesion• Total coronary arteries

diameter(TCD)• Ratio of LADd/TCD ,

RCAd/TCD , LCxd/TCD• Cross clamp time

Age>55yr DM HTN CS0

10

20

30

40

50

60

70

80

90

100

78

33

47 49

Correlation between risk factors of CAD & postoperative AF

EF≤40 % EF>40 %

Age

DM

HTN

CS

EF≤ 40

Yes No0

2

4

6

8

10

1212

11

HTN

EF>40

Yes No0

2

4

6

8

10

12

11

13

HTN

P Value=

EF≤ 40

Yes No0

2

4

6

8

10

12

1011

DM

EF>40

Yes No0

2

4

6

8

10

12

8

4

DM

P Value=

EF≤ 40

Yes No0

2

4

6

8

10

12

14

1616

10

CS

EF>40

Yes No0

2

4

6

8

10

12

14

16

15

8

CS

P Value=

EF≤ 40

Yes No0

5

10

15

20

25

3029

21

Age>55

EF>40

Yes No0

5

10

15

20

25

30

1714

Age>55

P Value=

Correlation between echocardiographic data & postoperative AF

EF≤40 % EF>40 %

LA volume

RA volume

LVEDV

RVGDV

DAP

LM lesion LAD lesion LCx lesion RCA lesion0

10

20

30

40

50

60

70

80

90

100

32

101

43

61

Correlation between …… postoperative AF

EF≤40 % EF>40 %

LM lesion

LAD lesion

LCx lesion

RCA lesion

Correlation between …… postoperative AF

EF≤40 % EF>40 %

TCD ↑

LADd / TCD↓

Δ LCx / TCD

Δ RCAd / TCD