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
* SERUM ELECTROLYTES - HIGH OR ABNORMAL
* SERUM CREATININE - HIGH DUE TO COMPROMISED RENAL FUNCTION
* BUN - HIGH DUE TO COMPROMISED RENAL FUNCTION
* URINE TOXICOLOGY - POSITIVE FOR COCAINE
* X- CHEST - CARDIOMEGALY WITH VASCULAR CONGESTION
* CARDIAC CATHETERIZATION - NORMAL VESSELS EVEN IN PRESENCE OF MYOCARDIAL INFARCTION
* ECG - MAY SHOW ISCHAEMIC CHANGES, NONSPECIFIC ST-T CHANGES, ARRHYTHMIAS OR LVH