How can an EKG tell if you have had a heart attack?

Related questions

1. How long does a mini heart attack last?
2. What does a heart attack look like on EKG?
3. Does an EKG rule out a heart attack?
4. What should a woman wear for an EKG?
5. How can you tell a heart attack from an EKG?
6. What is an EKG looking for?
7. What makes an EKG abnormal?
8. Can a EKG detect a blockage?
9. How do you know if something is wrong with your heart?
10. How long does a heart attack last if untreated?

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