Outcomes of Transcatheter Closure of Congenital Left Circumflex Coronary Artery Fistula

Abstract

outcomes following TCC of LCX-CAF and review our experience. MethodsThis retrospective study was approved by the Ethics Committee of Fuwai Hospital, Chinese Academy of Medical Sciences (No. -1126. The requirement for individual informed consent was waived due to the retrospective nature of the study and the use of anonymized data. PatientsA retrospective review was performed of all consecutive patients who were admitted to the Department of Structural Heart Disease of Fuwai Hospital and scheduled for TCC of LCX-CAF between January 2012 and December 2022. Congenital coronary artery fistulas (CAFs) are abnormal connections between the coronary arteries and major blood vessels or cardiac chambers. It has been reported that CAFs were present in 0.002-0.3% of patients who underwent invasive coronary angiography and in 0.9% of patients who underwent computed tomographic angiography. 1 Left circumflex coronary artery fistula (LCX-CAF) is a relatively rare type of CAF, with an incidence of 5-20%. 2 Transcatheter closure (TCC) of CAFs is associated with low morbidity and a favorable procedural success rate in selected patients with suitable anatomy, 3 and has recently emerged as a relatively common strategy. However, TCC of LCX-CAF is technically challenging due to the characteristics of the circumflex artery course. Despite there being a few reported cases, 4,5 information is limited regarding the outcomes of TCC of LCX-CAF. Thus, the aim of the present study was to describe