English

Abstract

Atrial fibrillation is the most common arrhythmia observed following CoronaryArtery Bypass Graft surgery. Objectives: To determine the incidence of post-operative atrialfibrillation in patients undergoing coronary artery bypass grafting. Materials and Methods:Study Design: Non-randomized prospective. Setting: Cardiac Surgery Department ofMultan Institute of Cardiology, Multan. Period: 20-1-2014 to 01-05-2015. A total number offour hundred and ninety (490) patients having age more than 40 years undergoing isolatedcoronary artery bypass graft surgery were included in the study. Data was analyzed in SPSSV20 software. Frequency and percentages were used for Atrial Fibrillation. To see the impact ofAF on morbidity, patients developing AF was compared with those who do not develop AtrialFibrillation post-operatively using independent sample t-test for quantitative variables. Chisquaretest and Fischer’s Exact test (whenever appropriate) was used to compare qualitativevariables. Results: A total number of four hundred and ninety (490) patients were included inthis study. There were more 431 males (88.0%) in this study. of the patients 71.6% were in LVGrade I before surgery. Incidence of post-operative atrial fibrillation was 13.5%. In 4.5% patientsIABP was inserted due to hemodynamic instability. Ventilation time and hospital stay time wassignificantly higher in patients with AF postoperatively (p value 0.03 and 0.02 respectively).But duration of inotropic support, post-op CKMB levels and IABP use were not significantlydifferent in both groups. Conclusion: The incidence of post-operative Atrial Fibrillation is 13.5%according to this study. And these patients were associated with increased risk of morbidity.