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Low-dose aspirin and stomach ulcer medications better for heart patients with GI complications

DALLAS Jan. 20, 2005 Heart patients with gastrointestinal complications should use low doses of aspirin combined with drugs that treat stomach ulcers rather than taking the anti-platelet drug Plavix, which has been thought to reduce bleeding ulcers, according to a gastroenterologist at UT Southwestern Medical Center and the Dallas Veterans Affairs Medical Center.

Physicians are challenged in treating heart patients who may be at high-risk for gastrointestinal bleeding from aspirin or other nonsteroidal anti-inflammatory drugs (NSAIDs). Factors that place patients at high-risk include a history of ulcers or gastrointestinal complications such as bleeding, increased age and congestive heart failure.

Low-dose aspirin (325 milligrams or less daily) has been shown to lower the risk of cardiovascular and cerebrovascular blood clots. It can, however, cause gastrointestinal ulceration and major bleeding, thereby limiting its overall usefulness even at the lowest effective amount. In an editorial in the current issue of The New England Journal of Medicine, Dr. Byron Cryer, associate professor of internal medicine at UT Southwestern, said current cardiology guidelines suggest patients who cannot take aspirin because of previous bleeding ulcers be given the drug clopidogrel (Plavix), which has been found to be marginally better than low-dose aspirin in preventing heart attacks and reducing bleeding ulcers. But, Plavix's effectiveness has not been proven in heart patients at greatest risk due to their history of gastrointestinal bleeding, and recent research indicates it actually may impair ulcer healing and markedly increase rates of bleeding.

"Clopidogrel inhibits new growth of small blood vessels in ulcers which is important for ulcer healing," said Dr. Cryer, a VA physician. "Although Plavix may not primarily cause gastrointestinal ulcers, through inhibition of new blood vessel growth, it may impair healing of background ulcers. When combined with the pr
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Contact: Scott Maier
scott.maier@utsouthwestern.edu
214-648-3404
UT Southwestern Medical Center
19-Jan-2005


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