Acute MI
A heart attack or acute myocardial infarction (MI) occurs when one of the arteries that supplies the heart muscle becomes blocked. Blockage may be caused by spasm of the artery or by atherosclerosis with acute clot formation. The blockage results in damaged tissue and a permanent loss of contraction of this portion of the heart muscle.
Review Date: 04/23/2009
Reviewed By: Alan Berger, MD, Assistant Professor, Divisions of Cardiology and
Epidemiology, University of Minnesota, Minneapolis, MN. Review
provided by VeriMed Healthcare Network. Also reviewed by David
Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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