The study evaluated outcomes of 1257 off-pump coronary artery bypass (OPCAB) cases from 2001-2009. Patients who developed atrial fibrillation (AF) post-operatively had higher rates of prior PCI, congestive heart failure, age over 70, and pneumonia. Multivariate analysis identified prior PCI, pneumonia, congestive heart failure, and age over 70 as independent risk factors for longer hospital stays and higher 30-day mortality following OPCAB.

2. AF and OPCABs in our experience Chokchai Suwanakijboriharn Bangkok Heart Hospital Thailand

6. DERMOGRAPHY *0.000 232(76%) 72(28%) Age>70 *0.000 61.6(±10.4) 65.9(± 9.9) Age(mean/SD) NS 197(22%) 35(21%) female NS 728(78%) 135(79%) Male 925 170 Overall CASE P value NO AF AF Parameter

7. Coronary risk factors NS 27(3%) 1(0.6%) Morbid obesity NS 429(46%) 74(46%) Diabetes NS 596(64%) 119(70%) Hypertension Coronary risk factors P value NO AF AF

8. Comorbid NS 37(4%) 9(5%) CVA NS 71(8%) 17(10%) COPD NS 22(2%) 3(2%) PVD NS 34(4%) 9(5%) Renal failure Comorbid P value NO AF AF

9. Risk factors 0.074 67(7%) 6(4%) Cardiogenic shock 0.017 65(7%) 18(11%) Prior PCI Cardiac profile NS 376(42%) 74(45%) Unstable angina NS 332(36%) 63(37%) Left main *0.006 166(18%) 46(27%) CHF NS 268(29%) 46(27%) HX of MI P value NO AF AF

10. Operative factors NS 175(19%) 40(24%) LVEF<40% NS 879(95%) 157(92%) Elective NS 52.5±15.0 50.3±16.1 EF NS 29(3%) 7(4%) Emergency NS 17(2%) 6(4%) Urgency NS 33(4%) 2(1%) Re Do case NS 892(96%) 168(99%) 1 st operation P value NO AF AF

11. Operative factors NS 244(26%) 48(28%) RGA used NS 112(12%) 13(8%) RIMA used NS 270(29%) 47(28%) SVG used NS 95(10%) 19(11%) RRA used NS 644(70%) 117(69%) LRA used NS 870(94%) 158(93%) LIMA used NS 4.17±1.34 4.11±1.38 Graft/patient P value NO AF AF

12. Postoperative results NS 0 1(0.6%) Periop MI NS 5.32±17.3 8.11±28.9 Intubation time (Hr) NS 6(0.6%) 0 Conversion rate NS 4.85±1.29 4.99±1.17 Skin to skin NS 139(15%) 29(17%) IABP P value NO AF AF

13. Postoperative result *0.019 21(2%) 10(6%) Prolong ventilation (Hr) NS 15(2%) 3(2%) Re op bleeding *0.038 8(1%) 5(3%) Postop ARF , dialysis require NS 2(0.2%) 1(0.6%) Permanent stroke P value NO AF AF Parameter

14. Postoperative results NS 43(4.6%) 5(2.9%) Operative mortality *0.004 10.81±9.58 13.65±10.43 LOS *0.001 6(0.6%) 7(4%) Pneumonia NS 1(0.1%) 0 Deep sternal wound infection NS 44(5%) 8(5%) 30 day readmission after procedure P value NO AF AF Parameter

16. Out come between 2 group *0.038 8(1%) 5(3%) Postop ARF , dialysis require 0.017 65(7%) 18(11%) Prior PCI *0.006 166(18%) 46(27%) CHF *0.000 232(76%) 72(28%) Age>70 *0.000 61.6(±10.4) 65.9(± 9.9) Age(mean/SD) P value NO AF AF Parameter

17. Out come between 2 group P value NO AF AF Parameter *0.004 10.81±9.58 13.65±10.43 LOS *0.001 6(0.6%) 7(4%) Pneumonia *0.019 21(2%) 10(6%) Prolong ventilation (Hr)

18. RISK FACTORS INFLUENCING OUTCOME 0.048 1.057 – 3.299 1.867 0.017 Prior PCI or balloon 0.003 1.465-16.485 4.913 0.001 Pneumonia 0.001 1.335 – 3.363 2.119 0.006 CHF 0.003 0.108-0.703 0.275 0.074 Cardiogenic shock 0.000 1.483-3.025 2.118 0.000 Age>70 Multivariate p value 95% confidence interval Relative risk Univariate p value

19. Thank You…