Ask a Specialist   Format to print				November 16, 2004
	IN THIS SECTION See all answers in this specialty Choose a different specialty MORE ON THIS TOPIC Articles Heart attack Chest pain Heart attack: First aid Tools Slide show: Cardiac rehabilitation: How 3 people got with the program Tool: Heart disease risk calculator Cardiovascular disease quiz: Ignorance isn't bliss Ask a Specialist Heart attack symptoms in women Cardiac ischemia Silent heart attack More Information		Acute coronary occlusion: A common cause of heart attack What is acute coronary occlusion? No name  /  No state given An acute coronary occlusion is a sudden blockage of one of the coronary arteries, which supply blood to the heart muscle (myocardium). It's a common cause of heart attack (myocardial infarction). The blockage is usually due to a blood clot that forms in an artery (coronary thrombosis) damaged by plaques. Rarely, it may be due to a clot that forms in the heart chamber and then breaks off and travels to an artery (coronary embolism). Related Information Heart attack Chest pain By Mayo Clinic staff January 9, 2004 AN00462 © 1998-2004 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved.  A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.com," "Mayo Clinic Health Information," "Reliable information for a healthier life" and the triple-shield Mayo logo are trademarks of Mayo Foundation for Medical Education and Research.		Advertising and sponsorship policy
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