Background: Acute Atrial Fibrillation is an important complication of ST Segment Elevation Myocardial Infarction even in the Primary percutaneous coronary angioplasty era. Studies on the echocardiographic and coronary angiographic characteristics of the STEMI patients who develop acute atrial fibrillation as a complication are limited. The present study aims to bridge this gap in knowledge.
Materials and methods: It was a single center, prospective cohort study, conducted from October 2014 to January 2016. The patients were divided into three groups -those with AF -at admission, within 24 hours of admission and after 24 hours and till discharge. The patient’s clinical, echocardiographic and angiographic profile (of those who underwent primary Percutaneous Coronary Intervention (PCI) or planned PCI) were recorded.
Results: The study included 59 STEMI patients with atrial fibrillation and 59 STEMI patients without atrial fibrillation. There was significant Left Atrial dilatation (39% vs. 18.6%, p=0.015) and ischemic Mitral Regurgitation (32.2 % vs. 15.3% p=0.030) in AF group. Ejection fraction and LV internal dimensions, did not show significant difference between the two groups. Single Vessel Disease (53.6% vs. 62.5%) and Multivessel disease (46.2% vs. 37.5%) were not significantly different between 2 groups. There was no difference in the culprit artery between patients who developed AF and those who did not.