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Ventricular tachyarrhythmias in 106 cats: associated structural cardiac disorders

E Côté1, R Jaeger

  • 1Angell Animal Medical Center, Boston, MA, USA.

Journal of Veterinary Internal Medicine
|November 13, 2008
PubMed

Insights

Most cats with ventricular tachyarrhythmias have concurrent cardiac abnormalities, primarily myocardial disease. This study highlights the high prevalence of echocardiographic findings in cats with these arrhythmias.

Area of Science:

  • Veterinary Cardiology
  • Comparative Pathology

Background:

  • Ventricular tachyarrhythmias are linked to various disorders in animals, yet specific concurrent conditions in cats remain understudied.
  • Limited data exists on the co-occurrence of cardiac and extracardiac disorders with ventricular tachyarrhythmias in feline patients.

Purpose of the Study:

  • To investigate coexisting diseases in cats diagnosed with ventricular tachyarrhythmias.
  • To compare the prevalence of echocardiographic abnormalities in cats versus dogs with similar arrhythmias.

Main Methods:

  • Retrospective evaluation of medical records from cats and dogs with ventricular tachyarrhythmias over 51 months.
  • Inclusion criteria: premature ventricular complexes, accelerated idioventricular rhythm, or ventricular tachycardia, confirmed by echocardiography during the diagnostic visit.

Main Results:

  • A significant majority (96%) of cats with ventricular tachyarrhythmias exhibited at least one echocardiographic abnormality.
  • Myocardial disease, including left ventricular concentric hypertrophy, was the most frequent concurrent finding in cats.
  • Cats (96%) were more likely than dogs (69%) to have an echocardiographically apparent cardiac lesion associated with ventricular tachyarrhythmias.

Conclusions:

  • Ventricular tachyarrhythmias in cats are strongly associated with underlying myocardial disease.
  • Cats with ventricular tachyarrhythmias demonstrate a higher prevalence of echocardiographic cardiac lesions compared to dogs.
Abstract

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