Heart attack: Myocardial infarction mean death ("infarction") of heart muscle (card ~heart and myo~muscle). This happens when the heart muscle is not getting the oxygen it needs over a relatively long period of time. This can happen from a narrowing of a blood vessel which reduces flow or from a suddenly, totally blocked vessel. The heart can't stop working, so that part keeps trying to pump blood until the the
Answered 5/8/2018
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