Insidermedicine In Depth - March 22, 2011
A more sensitive test detecting injured heart muscle improves the ability to identify and care for patients who may have had a heart attack, according to research published in the Journal of the American Medical Association. Some signs that you may be having a heart attack and should seek immediate medical attention include: • Pain or discomfort in the chest, which may spread to other parts of the upper body or your stomach • Shortness of breath • Nausea and vomiting Researchers from the University of Edinburgh compared the outcomes of over 1000 patients who were admitted to hospital because of a suspected heart attack before the hospital switched to a more sensitive test for detecting troponin with those of over 1000 similar patients who were admitted after the new test was put to use. Troponin is a chemical that is released into the system when heart muscle dies. Before using the new test, a person was considered to have experienced a heart attack if their blood troponin level was more than 0.20 ng/mL. After implementing the new test, patients were considered to have experienced a heart attack if troponin levels greater than 0.05 ng/mL could be detected in their blood. Once use of the new test was established, the detection of heart attack increased by 29%. Also, the risk of dying or having another heart attack in the following year dropped by 58% among patients who had a troponin level between 0.05 and 0.19. These are the patients who would have had a negative result ...Asthma — Comprehensive overview covers symptoms, treatment of this
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