491 Lawrence Avenue West, Suite 101, Toronto, Ontario M5M 1C7

What is a heart attack?

What-heart-attackWhen the blood supply to the heart is slowed or stopped because of a blockage, a heart attack occurs. Atherosclerosis, the narrowing of coronary arteries due to plaque buildup, causes more than 90% of heart attacks. A heart attack may also occur when a coronary artery temporarily contracts or goes into a severe spasm, effectively shutting off the flow of blood to the heart. The length of time the blood supply is cut off will determine the amount of damage to the heart.

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Doctors Office Toronto

491 Lawrence Avenue West,

Suite 101,

Toronto, Ontario

M5M 1C7

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