A heart attack, also called a myocardial infarction, occurs when a part of the heart muscle doesn’t receive enough blood flow. The more time that passes without treatment to restore blood flow, the greater the damage to the heart muscle. Every 43 seconds, someone in the United States has a heart attack.
How to recognize a heart attack:
If you notice the symptoms of a heart attack in yourself or someone else, call 9-1-1 immediately. The sooner you get to an emergency room, the sooner you can receive treatment to prevent total blockage and heart muscle damage or reduce the amount of damage.