Pictures of a normal heart and an enlarged (dilated) heart

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Heart failure occurs when the heart muscle does not pump as much blood as the body needs. Failure does not mean that the heart has stopped pumping but rather that it is failing to pump as effectively as it should.

The body tries to compensate for the heart's reduced pumping ability by:

ByHealthwise Staff
Primary Medical ReviewerE. Gregory Thompson, MD - Internal Medicine
Specialist Medical ReviewerRobert A. Kloner, MD, PhD - Cardiology
Last RevisedAugust 5, 2010

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