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Keywords:

  • cardiomyopathy;
  • right ventricle;
  • arrhythmia;
  • diagnosis;
  • endomyocardial biopsy;
  • electroanatomic mapping;
  • substrate mapping

A positive endomyocardial biopsy (EMB) is a major diagnostic criterion for arrhythmogenic right ventricular cardiomyopathy (ARVC). Nevertheless, its sensitivity is low due to the focal nature of the disease. Moreover, myocardial samples are usually taken from the uncommonly involved interventricular septum to minimize the risk of perforation. In this report, we describe a novel bioptical approach for ARVC diagnosis guided by the identification of right ventricle (RV) affected regions by means of electroanatomical voltage mapping.