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A member asked:
What is tested for during an exercise stress test?
A doctor has provided 1 answer
Coronary reserve: As a stress test progresses, the heart beats harder and faster which requires a richer and richer circulation provided by the coronary arteries. If need outstrips supply due to blockage, the test becomes abnormal. Thus a stress test is an indirect way to look for blockage. (a direct way is to fill the coronaries with dye and observe them directly)
Answered 1/7/2014
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