- Definition: Heart Failure
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The inability of the heart to fill with or pump enough blood through the body to maintain normal bodily functions. This can be caused from a structural or functional abnormality of the heart muscle. Systolic heart failure is typically due to a weak heart muscle which has been damaged by a myocardial infarction, longstanding hypertension, or a viral infection. Diastolic heart failure is typically due to a stiff heart which is incapable of relaxing and filling with blood.
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