Cardiac Testing in Heart Failure  Electrocardiogram: May show specific cause of heart failure: Ischemic heart disease Dilated cardiomyopathy: first degree AV block, LBBB, Left anterior fascicular block Amyloidosis: pseudo-infarction pattern Idiopathic dilated cardiomyopathy: LVH  Echocardiogram: Left ventricular ejection fraction Structural/valvular abnormalities
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