To remain healthy, the heart requires a constant supply of oxygen and nutrients, like any muscle in the body. Two large coronary arteries deliver oxygen-rich blood to the heart muscle. If one of these arteries becomes blocked suddenly, a portion of the heart is starved of oxygen. If the heart is deprived of oxygen too long, heart tissue will die. This condition is a heart attack, also known as a myocardial infarction.
A heart attack is often diagnosed by the presence of symptoms. It is critical that you are able to recognize symptoms of a heart attack so that you or someone with you can call 911 immediately. The quicker emergency medical help is available, the less heart tissue will die and the better the chances of survival.
Symptoms of heart attack vary somewhat for men and women.