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Cardiac screening test may help determine who should take aspirin to prevent heart attack
Date:5/9/2014

MINNEAPOLIS, MN May 6, 2014 For over 30 years, aspirin has been known to prevent heart attacks and strokes, but who exactly should take a daily aspirin remains unclear. New research published today in Circulation: Cardiovascular Quality and Outcomes shows that your coronary artery calcium (CAC) score, a measurement of plaque in the arteries that feed the heart, may help determine whether or not you are a good candidate for aspirin.

"Many heart attacks and strokes occur in individuals who do not appear to be at high risk," states lead author, Michael D Miedema, MD, MPH. "Individuals with known CVD [cardiovascular disease] should take a daily aspirin, but the best approach for individuals without known CVD is unclear. If we only treat high-risk individuals with aspirin, we are going to miss a substantial portion of patients who eventually suffer heart attacks. However, liberally prescribing aspirin increases the bleeding risk for a significant number of people who were never going to have a heart attack in the first place. With this study, we wanted to see if there is potentially a better way to determine who to treat with aspirin beyond simply using traditional risk factors."

Aspirin helps prevent heart attacks and strokes by preventing blood clots from forming in arteries lined with unhealthy plaque buildup. However, this same benefit puts patients taking aspirin at risk for dangerous bleeding, when blood clots don't form where they should. For that reason, the American Heart Association (AHA) guidelines currently recommend aspirin to prevent cardiovascular disease (CVD) in people who have known CVD or who are considered to be at high risk for a CVD event. Aspirin is generally not recommended for people who are considered to be at low or intermediate risk.

In this retrospective study, researchers studied 4,229 participants in the Multi-Ethnic Study of Atherosclerosis (MESA) from six centers across the country. Participants
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Contact: Jackie Boucher
jboucher@mhif.org
612-863-1636
Minneapolis Heart Institute Foundation
Source:Eurekalert

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