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Feline hypertrophic cardiomyopathy

Thickening of the heart muscle, which makes it harder for the heart to fill. It is the most common heart disease in cats. It often causes no symptoms until it is severe.

Severe🐈 Cats

This may be a veterinary emergency

URGENT if the cat is struggling to breathe or suffers sudden paralysis of the hind legs (very painful). Cardiac screening is advisable in at-risk breeds even if the cat appears healthy.

Symptoms to watch for

  • • Frequently NO symptoms until advanced stages
  • • Rapid or laboured breathing
  • • Lethargy, hiding away
  • • Sudden, painful paralysis of the hind legs (thromboembolism) — an emergency
  • • Sudden death in some cases

Causes

Thickening of the myocardium, with a genetic basis in several breeds (Maine Coon, Ragdoll and British Shorthair have known mutations). It also occurs in non-pedigree cats.

Diagnosis

Echocardiography (the key test). Cardiac blood markers help raise suspicion. Genetic testing in breeds with a known mutation.

Treatment

There is no cure. Treatment aims to improve heart function, prevent blood clots and manage heart failure when it develops. Thromboembolism is a very painful emergency.

Prevention

Screening echocardiography in predisposed breeds and before breeding, genetic testing and regular check-ups.

When should you see the vet?

URGENT if the cat is struggling to breathe or suffers sudden paralysis of the hind legs (very painful). Cardiac screening is advisable in at-risk breeds even if the cat appears healthy.

Consult a vet24 h emergency vets nearby

WetAi guides you and takes you to the vet; it does not diagnose.

Notice: this information is for general guidance and educational purposes only. It does NOT replace diagnosis or treatment by a registered veterinary surgeon. If you notice any symptoms, always consult a professional. Wallapets accepts no responsibility for the use of this information without veterinary supervision.

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