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Right ventricular outflow tract arrhythmias: benign or early stage arrhythmogenic right ventricular cardiomyopathy/dysplasia?


Ventricular arrhythmias (VAs) arising from the right ventricular outflow tract (RVOT) are a common and heterogeneous entity. Idiopathic right ventricular arrhythmias (IdioVAs) are generally benign, with excellent ablation outcomes and long-term arrhythmia-free survival, and must be distinguished from other conditions associated with VAs arising from the right ventricle: the differential diagnosis with arrhythmogenic right ventricular cardiomyopathy/dysplasia (ARVC/D) is therefore crucial because VAs are one of the most important causes of sudden cardiac death (SCD) in young individuals even with early stage of the disease. Radiofrequency catheter ablation (RFCA) is a current option for the treatment of VAs but important differences must be considered in terms of indication, purposes and procedural strategies in the treatment of the two conditions. In this review, we comprehensively discuss clinical and electrophysiological features, diagnostic and therapeutic techniques in a compared analysis of these two entities.

Credits: Sergio Conti, MD; Laura Cipolletta, MD; Vittoria Marino, MD; Martina Zucchetti, MD; Eleonora Russo, MD; Francesca Pizzamiglio, MD; Ghaliah Al-Mohani, MD; Salvatore Pala, BE; Valentina Catto, BE, PhD; Luigi Di Biase, MD, PhD; Andrea Natale, MD; Claudio Tondo, MD, PhD; Corrado Carbucicchio, MD



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