CAUSES OF CARDIOMYOPATHY :
1. PRIMARY OR IDIOPATHIC
* HYPERTROPHIC CARDIOMYOPATHY
* FAMILIAL
* EOSINOPHILIC ENDOMYOCARDIAL DISEASE
* ENDOMYOCARDIAL FIBROSIS
2. SECONDARY
* HYPERTENSIVE
* METABOLIC LIKE DIABETES, UREMIA
* PERIPARTUM CARDIOMYOPATHY
* RESTRICTIVE CARDIOMYOPATHY DUE TO MYOCARDIAL FIBROSIS, HYPERTROPHY OR INFILTRATION LIKE AMYLOID, GLYCOGEN DIPOSITION & IN HEMACHROMATOSIS, ENDOMYOCARDIAL FIBROSIS, FABRYS DISEASE, EOSINOPHELIA, SCLERODERMA, MEDIASTINAL RADIATION, NEOPLASTIC INFILTRATION, SARCOIDOSIS
* MUSCULAR DYSTROPHIES LIKE DUCHENNES MUSCULAR DYSTROPHY
* DRUG INDUCED - DOXOBUBICIN, CYCLOPHOSPHAMIDE, 5-FLUOROURACIL, COCAINE ABUSE
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VARIETIES OF CARDIOMYOPATHIES :
* DILATED CARDIOMYOPATHY - DUE TO VIRAL MYOCARDITIS, ISCHAEMIA, FAMILIAL, ALCOHOLIC, PREGNANCY, SELENIUM DEFICIENCY, HYPOPHOSPHATEMIA, HYPOCALCEMIA, THYROID DISEASE, COCAINE USE, CHR UNCONTROLLED TACHYCARDIA, RT. VENTRICULAR DYSPLASIA.
* RESTRICTIVE CARDIOMYOPATHY :
DUE TO MYOCARDIAL FIBROSIS, HYPERTROPHY OR INFILTRATION LIKE AMYLOID, GLYCOGEN DIPOSITION & IN HEMACHROMATOSIS, ENDOMYOCARDIAL FIBROSIS, FABRYS DISEASE, EOSINOPHELIA, SCLERODERMA, MEDIASTINAL RADIATION, NEOPLASTIC INFILTRATION, SARCOIDOSIS
* HYPERTROPHIC - IDIOPATHIC HYPERTROPHIC SUBAORTIC STENOSIS OR HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHY
OTHER TESTS -
* CHEST X-RAY - CARDIAC ENLARGEMENT, PULMONARY CONGESTION & PLEURAL EFFUSION
* STRESS TESTING WITH THALLIUM & SESTAMIBI IMAGING, CORONARY ANGIOGRAPHY & MUGA TO EXCLUDE ISCHAEMIC HEART DISEASE.
* TRANSVENOUS ENDOMYOCARDIAL BIOPSY
* RADIONUCLIDE STUDIES
* CARDIAC CATHETERIZATION