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Left-dominant arrhythmogenic cardiomyopathy in a Fila Brasileiro dog

2022; University of Tripoli; Volume: 12; Issue: 4 Linguagem: Inglês

10.5455/ovj.2022.v12.i4.11

2226-4485

Guillermo Belerenian, Pablo A. Donati, Cristian Daniel Rodríguez, V.A. Castillo, Juan Manuel Guevara, Roberto Walter Israel Olivares,

Cardiac electrophysiology and arrhythmias

In human medicine, arrhythmogenic left ventricular cardiomyopathy was described as a primary disease of the heart characterized by fibroadipose replacement of the myocardium..We report the case of a dog, with history of syncope and irregular cardiac rhythm. Electrocardiogram, echocardiography, and a 24-hour Holter monitoring showed, respectively, the presence of premature ventricular complexes with right bundle branch block morphology, an increase of the left ventricle end-diastolic diameter with preserved fractional shortening and ejection fraction, and a sinus arrhythmia as baseline rhythm with supraventricular tachycardia episodes and ventricular complexes with left bundle branch block morphology. After the death of the canine, a postmortem examination showed cardiomegaly. Fibroadipose replacement of the septum and both ventricles, with left ventricle myocardial fibrosis, suggestive of previous necrosis, was observed.These findings are suggestive of left-dominant arrhythmogenic cardiomyopathy which, to the best of our knowledge, has not been described in veterinary medicine.