Supraventricular tachycardia in four young dogs.
Rapid, clinical supraventricular tachycardia (SVT), without apparent underlying heart disease, was identified in 3 young Labrador Retrievers and 1 Labrador Retriever-type dog. The electrocardiographic characteristics, identification of ventricular preexcitation in 2 dogs, age at onset, response to antiarrhythmic agents, and recent electrophysiologic documentation of a concealed accessory pathway in another young Labrador Retriever suggested orthodromic atrioventricular reciprocating tachycardia as the mechanism of SVT.
Wright, KN; Atkins, CE; Kanter, R
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