Definition

“A primary disorder of the heart muscle that causes abnormal myocardial performance and is not the result of disease or dysfunction of other cardiac structures … myocardial infarction, systemic hypertension, valvular stenosis or regurgitation”

IDC – Definition
a disease of unknown etiology that principally affects the myocardium LV dilatation and systolic dysfunction
pathology increased heart size and weight ventricular dilatation, normal wall thickness heart dysfunction out of portion to fibrosis

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