No: Ekg is helpful in detecting acute st elevation myocardial infarction. Sometimes, damage can occur without changes in ekg. Then we rely on blood work, called cardiac enzymes.
Answered 12/9/2013
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Not definitive: Ecg can be completely normal unless you had a previous infarct or are currently having an acute coronary syndrome. There are signs suggesting ischemic heart disease but they re not definitive. A stress test is the next line of testing followed by cardiac catheterization which is truly definitive.
Answered 10/4/2016
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