Hemangiosarcoma involving the interventricular and interatrial septum, atrioventricular node, and right ventricle, causing atrioventricular block and ventricular arrhythmias in a dog
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A 13-year-old male neutered miniature poodle was presented for evaluation following multiple syncopal episodes. A six-lead ECG revealed high-grade atrioventricular (AV) block and ventricular ectopy presenting as periods of accelerated idioventricular rhythm an... ...
