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http://dx.doi.org/10.17555/jvc.2015.08.32.4.330

Idiopathic Atrial Standstill in an Old English Sheepdog Cross Dog  

Suh, Sang-il (Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University)
Choi, Ran (Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University)
Hyun, Changbaig (Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University)
Publication Information
Journal of Veterinary Clinics / v.32, no.4, 2015 , pp. 330-333 More about this Journal
Abstract
An 1 year old intact male mixed dog (weighing 20 kg) was presented with primary complaints of abdominal distension and severe exercise intolerance. Electrocardiogram found profound bradycardia (46-79 beats/min) with atrial standstill. Laboratory studies found no particular abnormalities. Serum cortisol and T4 concentration were within normal range. Diagnostic imaging studies revealed generalized cardiomegaly, ascites, dilation in all cardiac chambers, absence of atrial contraction, absence of transmitral A-peak, mitral and tricuspid valve insufficiency and normal left ventricular systolic dimension. Based on diagnostic findings, the case was diagnosed as idiopathic atrial standstill. The dog was treated with conventional therapy for heart failure.
Keywords
Atrial standstill; bradycardia; arrhythmia; sinoatrial arrest; dog;
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