A Rare Case of Prolapsing Accessory Tricuspid Valve Tissue into the Ventricular Septal Defect in Patient Undergoing Tetralogy of Fallot Repair: Role of Transesophageal Echocardiography

摘要

Accessory tricuspid valve tissue (ATV) is a rare congenital cardiac malformation most commonly associated with congenital cardiac anomalies. In literature, reported cases are associated with occlusion of the ventricular septal defect (VSD) by ATV. Therefore, accurate diagnosis of ATV in patients undergoing cardiac surgery is important. We reporta rare case of ATV tissue in a patient undergoing tetralogy of Fallot (TOF) repair. Introduction: Accessory tricuspid valve tissue is a rare congenital cardiac anomaly most commonly associated with congenital cardiac anomalies with varying clinical and hemodynamic features. Most of the reported cases were associated with various other intracardiac anomalies, such as TOF, transposition of a great artery, and VSD. When associated with VSDs, it can cause partial to near-complete obstruction of the VSD or it can cause right ventricular outflow tract (RVOT) obstruction.Therefore, preprocedure diagnosis and confirmation are needed when it is associated with congenital cardiac abnormalities.gggAccessory tricuspid valve tissue, Tetralogy of Fallot, Transesophageal echocardiography.