When a part of your heart can’t pump because it’s dying from lack of blood flow, it can disrupt the pumping sequence for the entire heart. When a heart attack happens, blood flow to a part of your heart stops or is far below normal, which causes that part of your heart muscle to die. is due to coronary heart disease, which includes heart attacks. About 300,000 people a year have a second heart attack. New heart attacks happen to about 635,000 people in the U.S. Time is critical in treating a heart attack, and a delay of even a few minutes can result in permanent heart damage or death. If you suspect you or someone you're with is having a heart attack, do not hesitate to call 911 (or your local emergency services phone number). If blood flow isn’t restored quickly, a heart attack can cause permanent heart damage and death.Ī heart attack is a life-threatening emergency. Without blood flow, the affected heart muscle will begin to die. The lack of blood flow can occur because of many different factors but is usually related to a blockage in one or more of your heart’s arteries. What is a heart attack?Ī myocardial infarction (commonly called a heart attack) is an extremely dangerous condition caused by a lack of blood flow to your heart muscle.

How a blocked artery can cause a heart attack.

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