Download What is Dilated Cardiomyopathy (DCM

What is Dilated Cardiomyopathy (DCM)?
Dilated Cardiomyopathy is a disease of the heart muscle which causes the muscle wall to become
weaker. This means that the heart is unable to pump effectively, and so more blood remains in the heart
chambers causing them to become enlarged, or dilated. Eventually the heart will go into failure.
Are certain dogs more at risk?
The cause of DCM is unknown, although some breeds are more
predisposed to the condition. These include Dobermans, Great Danes,
Irish Wolfhounds, American Cocker Spaniels, and Boxers.
What are the signs of DCM?
Dogs with DCM may show signs of exercise intolerance and
breathlessness. Many will also have an irregular heartbeat. Often dogs
will show no signs of DCM until they go into heart failure.
How is DCM diagnosed?
If your vet suspects that your dog has DCM they will need further tests to confirm the diagnosis. Primarily
a heart scan will be performed by a Cardiologist, who will be able to assess how the heart is pumping,
and measure the size of the chambers and thickness of the heart muscles. Chest X-rays are useful to
assess the size of the heart, and as many dogs with DCM have an irregular heart rhythm known as atrial
fibrillation, an ECG is also a useful test.
My dog has DCM, now what?
Treatment is focused on improving the ability of the heart to pump and managing the symptoms of heart
failure, and many dogs can have a good quality of life with medical management and medications.
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