A blockage in the heart's arteries may reduce or completely cut off the blood supply to a portion of the heart. This can cause a blood clot to form and totally stop blood flow in a coronary artery, resulting in a heart attack (also called an acute myocardial infarction or MI).
Irreversible injury to the heart muscle usually occurs if medical help is not received promptly.
Unfortunately, it is common for people to dismiss heart attack symptoms.
A blockage in the heart's arteries may reduce or completely cut off the blood supply to a portion of the heart. This can cause a blood clot to form and totally stop blood flow in a coronary artery, resulting in a heart attack (also called an acute myocardial infarction or MI).
Irreversible injury to the heart muscle usually occurs if medical help is not received promptly. Unfortunately, it is common for people to dismiss heart attack symptoms.
You can have a heart attack without knowing it
The nation's longest-running heart study suggests that about one heart attack in four produces no symptoms - or at least none that the victim associates with a heart problem.
These so-called "silent heart attacks," however, are only the most extreme case of a still more prevalent condition called "silent ischemia" - a chronic shortage of oxygen - and nutrient-bearing blood to a portion of the heart. Both conditions put their victims at significant risk.
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