Not very long: A heart attack can kill within minutes, actually. That's why it is so important to get treated right away if someone has a heart attack.
Answered 4/27/2013
5.2k views
It may not!: Some damage is not lethal at all! depends on atherosclerosis, degree of obstruction, part of heart involved, and one's other life risk factors. Smoking obesity prior damage poor conditioning sedentary.
Answered 8/14/2018
5.2k views
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