Atrial Fibrillation; To Determine the Frequency and Its Predisposing Factors in Patients After Coronary Artery Bypass Grafting.

Introduction: Atrial Fibrillation (AF) is one of the most common arrhythmiaafter coronary artery bypass grafting (CABG). Many risk factors have been identified for thedevelopment of postoperative AF with varied level of evidence. AF is associated with increasedrisk of morbidity and mortality causing prolong hospital stay and utilizing more resources.Our study was aimed to identify high risk population for developing post-operative AF andto draw recommendations for its prevention. Objectives: Our objective was to determine thefrequency of Atrial Fibrillation (AF) and its predisposing factors in patients after Coronary ArteryBypass Grafting (CABG). Setting: The study was conducted at Cardiac Surgery Department /Faisalabad Institute of Cardiology, Faisalabad. Duration of Study: 15-12-2014 to 14-07-2015.Study Design: Cross sectional study. Results: The result showed that out of 130 patientsundergoing CABG surgery, 104 (80.3%) male and 26 (19.7%) females, 9(7%) patients sufferedAF in post-operative phase. A significant association was found between postoperative AF andadvanced age (p = 0.011), obesity (p = 0.028), low EF (p = 0.000), and post-operative useof β-blocker (p = 0.007). Significant difference was found between postoperative AF and daysstayed in hospital (p = 0.000) and magnesium level at first day (p = 0.038). On the other handthere was no significant relationship found between AF and prolongs cross clamp and bypasstime. Conclusion: Advance age, obesity, congestive heart failure, low ejection fraction andwithdrawal from beta blockers in post-operative period have been identified as a significant riskfactors for the development of post-operative atrial fibrillation.