Arrhythmogenic Right Ventricular Cardiomyopathy in Two Dogs

Oliveira, Letícia Batelli deSiqueira, Gustavo Henrique Lima deSonne, LucianaSantAna, Fabiano José Ferreira deReis Junior, Janildo Ludolf

Arrhythmogenic right ventricle cardiomyopathy (ARVC) is a rare primary heart condition recognized in dogs. It is an inherited disease more commonly described in Boxer dogs. Clinically, ARVC is characterized by ventricular tachyarrhythmias and histopathologically by fibrofatty replacement, mostly on the right ventricle. This report describes the gross and histopathological findings from a female adult Boxer and from a male adult mixed breed dog, presenting signs of heart failure and marked infiltration of adipose tissue replacing cardiomyocytes, predominantly in the epicardium and myocardium of the right ventricle.(AU)

1. cardiomyopathy
2. ARVC
3. right ventricle
4. fibrofatty replacement