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During a heart attack, part of your heart starts dying fast, caused by no oxygen, the quicker you seek help the less that dies. So a heart after a heart attack with-out quick medical attention will be partly dead and black, and the rest of the heart will have to work harder to make up for it the rest of the time the person is alive.

Sometimes the rest of the heart can NOT work hard enough to make up for the dead areas of the heart. This will cause the person's heart'd ejection fraction to be lower and may cause the person to have congestive heart failure and die or cause them to have a heart transplant.

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13y ago

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