No Association Between SCD, Origin, or RCA From Left Coronary Sinus With IAC on CT

Background: Anomalous aortic origin of a coronary artery from the opposite coronary sinus is rare (1% of the general population) and has been associated with sudden cardiac death (SCD), particularly in young athletes. Interarterial course (IAC), passing between the pulmonary artery and aorta, is also considered a risk factor for SCD. Anomalous aortic origin of the right coronary artery (RCA) is more common than that of the left coronary artery (LCA) but is associated with lower mortality. Surgical treatment is recommended for most symptomatic or high-risk patients with anomalous LCA, but the treatment of anomalous RCA remains controversial. Surgery has been advocated in asymptomatic patients with certain imaging findings (eg, slit-like orifice, narrow proximal lumen, branch angle Objective: To determine the association between the anomalous aortic origin of the RCA from the left coronary sinus with IAC, as observed on coronary CT angiography (CCTA), and SCD. Design: Retrospective stu more...