Cardiomyopathy in Cats

There are two forms of cardiomyopathy: dilated (the heart wall becomes thin) and hypertrophic (the heart wall thickens). The former has recently been linked to some cats' need for larger amounts of taurine (an amino acid) or inefficient way of absorbing this nutrient from the gastrointestinal tract. The heart-muscle changes have been reversed by twice daily giving 250 milligrams of taurine, which is available in health-food stores.

The clinical signs of dilated cardiomyopathy are lethargy, decreased appetite, and breathing difficulties. The cat with the hypertrophic form may display fainting, seizures, coughing, breathing difficulties, lethargy, or stroke like signs - inability to move the back legs, for example.

An echocardiogram (ultrasound) is the best procedure for diagnosing and differentiating the cardiomyopathies, because an electrocardiogram may appear normal. All cats over seven years of age should be checked for hyperthyroidism.

To help prevent the dilated form, always use a well-known cat food that is supplemented with taurine. Do not use generic cat foods!