Pulmonary valve annular and right ventricular outflow tract size as predictions values for moderate to severe pulmonary regurgitation after repaired Tetralogy of Fallot

Abstract

Tetralogy of Fallot (TOF) is one of the most common congenital heart diseases with an approximate incidence of 3 per every 10 000 neonates. It accounts for 60%-80% of all cyanotic congenital heart diseases. 1 The first successful intracardiac repair of TOF was carried out by Lillehei in 1954. Total corrective repair for TOF consisted of ventricular septal defect closure and relief of right ventricular outflow tract obstruction (RVOTO). Over the past few decades, the early results of surgical repair of TOF were thought to be excellent; however, there has been some mid-term to long-term complications like pulmonary incompetence, right ventricular dilation, residual RVOTO, aortic dilation, and arrhythmia, 2-8 which increase the early and late reinterventions.