Case Report

Supraventricular tachycardia with isorhythmic atrioventricular dissociation in a Labrador retriever

Authors
  • A. van Loon
  • V. Liekens
  • D. Binst
  • D. Paepe
  • B. Houdellier
  • P. Smets

Abstract

A neutered, seven-year-old, female Labrador retriever was presented with complaints of tachypnea, gagging and abdominal distension. A left apical systolic murmur with an intensity of 3/6, tachycardia, weak femoral pulses and positive undulation were observed on physical examination. After echocardiographic and electrocardiographic examination, dilated cardiomyopathy (primary or secundary) and supraventricular tachycardia were diagnosed. At a later control visit, after initiation of treatment with digoxin, electrocardiography revealed isorhythmic atrioventricular dissociation (IAVD) and poor control of the SVT. After transition to diltiazem, the tachycardia was well-controlled. A full recovery of the heart was observed on echocardiographic examination. Twenty-four months later, the dog showed no more cardiac signs. In this case report, a rare arrhythmia, i.e. IAVD in combination with SVT is described. It shows the importance of SVT as a reversible cause of a DCM-like phenotype on echocardiography.

How to Cite:

van Loon, A. & Liekens, V. & Binst, D. & Paepe, D. & Houdellier, B. & Smets, P., (2019) “Supraventricular tachycardia with isorhythmic atrioventricular dissociation in a Labrador retriever”, Vlaams Diergeneeskundig Tijdschrift 88(1), 44-53. doi: https://doi.org/10.21825/vdt.v88i1.16044

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Published on
27 Feb 2019
Peer Reviewed