الفهرس 
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Abstract
Cardiomyopathy, which literally means ”heart muscle disease,” is the deterioration of the function of the myocardium (i.e., the actual
heart muscle) for any reason. People with cardiomyopathy are often at
risk of arrhythmia or sudden cardiac death or both.
Although in theory the term ”cardiomyopathy” could apply to
almost any disease affecting the heart, in practice it is usually reserved
for severe myocardial disease leading to heart failure .
Cardiomyopathies can be categorized as extrinsic or intrinsic:
An extrinsic cardiomyopathy is a cardiomyopathy where the
primary pathology is outside the myocardium itself. Most
cardiomyopathies are extrinsic. The World Health Organization calls
these specific cardiomyopathies.