Complex morphology of the abnormal muscle bundle in double-chambered right ventricle

Double-chambered right ventricle is a rare congenital heart disorder involving two different right ventricle pres- sure compartments that is often associated with malalignment ventricular septal defect. Usually, the obstruction is caused by an anomalous muscle bundle crossing the right ventricle from the interventricular septum to the right ventricle free wall.A 18-year-old man underwent cardiac surgery procedure for right ventricular outflow tract obstruction causedby anomalous muscle bundles. After the surgical procedure, patient remains free of symptoms and medications. We report our surgical experience in a case of complex morphology of the abnormal muscle bundle in dou-ble-chambered right ventricle.