Cardiomyopathies are diseases of the heart muscle associated with cardiac dysfunction. The World Health Organization/International Society and Federation of Cardiology task force on the definition and classification of cardiomyopathies has defined five subtypes of cardiomyopathy (1): dilated, hypertrophic, restrictive, arrhythmogenic right ventricular dysplasia, and unclassified cardiomyopathies. The term specific cardiomyopathy is used in reference to cardiomypathies associated with specific, usually systemic, disorders. Table 1 lists echocardiographic characteristics of the major types of cardiomyopathy.
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