Sudden Cardiac Arrest in A Young Adult Caused by Anomalous Origin of the Left Anterior Descending Artery from the Right Sinus of Valsalva: A Case Report

: Introduction: Coronary Artery Anomalies (CAAs) are rare, with their prevalence ranging from 0.6% to 1.3%. Case Presentation: A 33-year-old man with no previous medical history was referred to the emergency department with Sudden Cardiac Arrest (SCA) while playing soccer. Systematic assessment revealed that the SCA was caused by a scarce CAA; the Left Anterior Descending (LAD) artery arising from the Right Sinus of Valsalva (RSV). There was also Left Ventricular (LV) systolic dysfunction with an LV ejection fraction of 35%. The patient subsequently underwent single vessel coronary artery bypass grafting of the Left Internal Mammary Artery (LIMA) to LAD as well as cardioverter-defibrillator placement and had no further incidence of SCA. Conclusions: Comprehensive knowledge of CAAs and the related symptoms shortens the time to correct diagnosis and initiation of proper management and is likely to reduce the frequency of complications.