Embolic ST-Elevation Myocardial Infarction in Atrial Fibrillation: Report of Two Cases and Review of Literature

Coronary artery plaque rupture, erosion, thrombosis, and dissection account for nearly all acute myocardial infarction (AMI). However, coronary artery embolism remains a significant cause of AMI that is essentially unaccounted for. In this report, we present two cases of acute coronary syndrome caused by coronary embolism. Both cases illustrate that patients with atrial fibrillation are at an increased risk of thromboembolic events of the coronary circulation. We highlight the clinical characteristics of atrial fibrillation associated with coronary embolism and present the therapeutic interventions based on our experience and a review of the literature. Given that AMI is a significant cause of morbidity and mortality among adults worldwide, it is imperative that practicing clinicians be aware of coronary embolism as a cause of AMI, particularly in high-risk populations such as those with atrial fibrillation.