Hypertrophic cardiomyopathy secondary to severe right and left ventricular outflow tract obstruction in a Maltese dog
2015
Yoon, W.K., Guardian Angel Animal Hospital, Anyang, Republic of Korea | Suh, S.I., Section of Small Animal Internal Medicine, Kangwon National University, Chuncheon, Republic of Korea | Oh, Y.S., Department of Veterinary Pathology, College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea | Hyun, C., Section of Small Animal Internal Medicine, Kangwon National University, Chuncheon, Republic of Korea
An 8-year-old spayed female Maltese (2.5 kg of body weight) presented with the primary complaint of loud heart murmur and exercise intolerance. Diagnostic imaging revealed severe pulmonic stenosis (peak velocity 5.2 m/ s) with right ventricular hypertrophy. The dog revisited after 2 years, at which time, diagnostic imaging revealed severe biventricular hypertrophy, dynamic left ventricular outflow tract obstruction, left atrial dilation and pulmonary hypertension with worsened pre-existing pulmonic stenosis. Postmortem investigation revealed hypertrophic cardiomyopathy and regional myocardial infarction. The case was diagnosed as hypertrophic cardiomyopathy secondary to severe right and left ventricular outflow tract obstruction.
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