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Mayo Clinic identifies new risk factor for heart attack patients
Date:11/5/2007

ORLANDO, Fla. -- If you go to the hospital within one to two hours of the onset of symptoms of a heart attack, your chances of getting proper treatment are nearly 70 percent greater than those who wait 11 to 12 hours before seeking treatment, according to results presented today at the American Heart Associations Scientific Sessions 2007 in Orlando, Fla.

This research should emphasize to patients that getting help immediately, by calling 911, gives them the best chance of receiving treatments we know can help save their lives or lessen the damage to their hearts, says Henry Ting, M.D., lead Mayo Clinic cardiovascular researcher on the national study. If patients wait at home for hours with symptoms and come in later, unfortunately they arent getting the proper treatments.

The most serious type of heart attack is known as an ST-elevation myocardial infarction (STEMI). In a STEMI, critical arteries supplying the heart with blood are blocked. Previous studies have shown that the best treatment for STEMI patients is reperfusion therapy -- when a patients blocked artery is opened by inflating a balloon at the site of the blockage or by delivering clot-dissolving medication, thus restoring blood flow to heart muscle.

Significance of the Mayo Clinic Research

The study is the largest and most detailed review of multiple elements in patient records contained in a national heart attack database. These elements are: time delay from onset of symptoms to hospital arrival; treatment with reperfusion; and treatment outcome. After analyzing 440,398 heart attack incidents from 1995 to 2004 in the National Registry of Myocardial Infarction, the researchers identify for the first time a novel risk factor for heart attack deaths that appears to have a readily available solution: comply with the American Heart Association/American Cardiology Association guidelines now in place. The guidelines state that if a patient has symptoms consis
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Contact: Traci Klein
newsbureau@mayo.edu
507-284-5005
Mayo Clinic
Source:Eurekalert

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