Role of Right Ventricular Three-Dimensional Electroanatomic Voltage Mapping for the Arrhythmic Risk Stratification of Patients with Corrected Tetralogy of Fallot or Other Congenital Heart Disease Involving the Right Ventricle Outflow Tract

Abstract

Introduction: Among adult patients with previous surgical correction for Tetralogy of Fallot (ToF) or other repaired Congenital Heart Disease (rCHD) involving the Righ Ventricular (RV) outflow, ventricular arrhythmias (VA) and sudden cardiac death (SCD) represent a late complication. The impaired hemodynamics that lead to RV dilatation and overload could also modify its electrical properties. 3D Electroanatomic Voltage Mapping (EVM) of the RV could confirm the presence of myocardial electrical abnormalities, allowing to better identify patients at risk of life-threatening arrhythmias.