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Cardiomyopathy prevalence in 780 apparently healthy cats in rehoming centres (the CatScan study)

Jessie Rose Payne1, David Charles Brodbelt1, Virginia Luis Fuentes1

  • 1Clinical Science and Services, Royal Veterinary College, Hawkshead Lane, North Mymms, Hatfield, Hertfordshire, AL9 7TA, United Kingdom.

Journal of Veterinary Cardiology : the Official Journal of the European Society of Veterinary Cardiology
|January 19, 2016
PubMed

Insights

Hypertrophic cardiomyopathy (HCM) is common in apparently healthy cats, affecting 14.7% of those screened. Male sex, older age, higher body condition score, and heart murmurs are associated with HCM diagnosis in felines.

Area of Science:

  • Veterinary Cardiology
  • Feline Medicine
  • Cardiovascular Research

Background:

  • Hypertrophic cardiomyopathy (HCM) is a significant cardiac condition in cats.
  • Pilot data suggested a potential prevalence of 15% in the feline population.
  • Understanding HCM prevalence and risk factors is crucial for feline health.

Purpose of the Study:

  • To screen a large cohort of apparently healthy adult cats for cardiac disease.
  • To determine the prevalence of hypertrophic cardiomyopathy (HCM) in this population.
  • To identify factors associated with a diagnosis of HCM in cats.

Main Methods:

  • A prospective, cross-sectional study involving 780 apparently healthy cats aged ≥ 6 months.
  • Exclusion of hypertensive or hyperthyroid cats.
  • Evaluation included auscultation, blood pressure, and two-dimensional echocardiography; HCM defined by left ventricular wall thickness ≥ 6 mm.

Main Results:

  • The prevalence of HCM was 14.7% (95% CI 12.3-17.4%), with higher prevalence in older cats.
  • Heart murmur prevalence was 40.8%, with 70.4% deemed functional.
  • Factors associated with HCM included male sex, increased age, higher body condition score, and louder heart murmurs.

Conclusions:

  • Hypertrophic cardiomyopathy is a common cardiac condition in apparently healthy cats.
  • Other cardiomyopathies are less prevalent in this population.
  • Heart murmurs are frequent in cats but often functional, though associated with HCM risk.
Abstract

Keywords:
EchocardiographyFelineHCMScreeningShelter

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