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How do u know this?

TonyDCM
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TonyDCM

Usually around 10 seconds.

alpla
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alpla

If heart stops completely I’d say 6 seconds.

funwithdouger
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funwithdouger

It varies depending on the severity of the heart attack, your general physical condition, how hard you were exerting yourself.
Don’t take chances see a doc.

crazzee
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crazzee

Actually it depends on the blockage and the loss of oxygen to the heart itself. Some people have heart attacks and do not lose conscousness. When someone has a heart attack it usually means they have a blockage in one of the arteries in the heart. Without blood flow to these arteries, part of the heart begins to lack oxygen and begins to die. This causes the chest pain a person will feel when having a heart attack. If it is a main artery that is blocked the heart will stop because of the lack of oxygen and a person… Read more »