(Reuters) - The U.S. Food and Drug Administration warned physicians on Wednesday that two chemicals used to conduct cardiovascular stress tests can cause heart attacks and death, and it suggested resuscitation equipment and trained staff be available when the tests are conducted. The injectable products, Lexiscan and Adenoscan, are marketed by Astellas Pharma US Inc. They work by stressing the heart, allowing physicians to take images that can show areas of low blood flow and damaged heart muscle. The FDA said heart attacks may be triggered by the tests because the chemicals dilate the heart's arteries and increase blood flow to help identify obstructions.
via Health News Headlines - Yahoo! News http://news.yahoo.com/fda-warns-heart-risks-astellas-stress-test-chemicals-165901386--finance.html
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