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Usefulness of Tpeak–Tend Interval to Distinguish Arrhythmogenic Right Ventricular Cardiomyopathy from Idiopathic Right Ventricular Outflow Tract Tachycardia

The two predominant etiologies of right ventricular tachycardia (VT) are arrhythmogenic right ventricular cardiomyopathy (ARVC) and idiopathic VT arising from the right ventricular outflow tract (RVOT). Discrimination between these two entities is critical, as their prognoses and therapeutic options differ. The Tpeak–Tend (Tpe) interval reflects the transmural repolarization dispersion and its prolongation is associated with high mortality.