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A heart attack (myocardial infarction, or AMI) is an emergency. But the condition that causes it usually takes years to develop. Over time, fatty substances collect on the walls of the heart's arteries. These arteries become narrower. It is then more likely that one will become fully clogged, causing a heart attack.
Call 911 for emergency medical services. Immediate medical care may keep the heart from stopping. It may help keep damage to the heart muscle to a minimum.
Have the victim stop all activities.
Reassure the victim. This will keep him or her calm, so the heart uses less oxygen.
Loosen any clothing that may restrict breathing. This includes ties, collars, and belts.
Do CPR, if needed.
The warning signs of a heart attack can include any of the following:
Chest pain or constriction. This is like a belt squeezing the chest
Heaviness in the chest area. This is as if a heavy weight is resting on the chest.
Heaviness or pain going to the arms, shoulders, jaw, or teeth
Shortness of breath
Pale or gray skin tone and sweating. Also, cool, damp skin.
Symptoms that aren't relieved by heart medicine
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