Heart

Heart Attack

Coronary heart disease (CHD) is the leading cause of death for both men and women in the United States. CHD is caused by a narrowing of the coronary arteries that supply blood to the heart, and often results in a heart attack.

Each year, about 1.1 million Americans suffer a heart attack. About 460,000 of those heart attacks are fatal. About half of those deaths occur within 1 hour of the start of symptoms and before the person reaches the hospital.

Fortunately, everyone can take steps to protect their heart and their life or that of someone else. The key is seeking medical care as soon as possible.

This Web page tells you about heart attack and the steps you can take to increase your chances of survival. You’ll learn why a fast response to the signs of a heart attack is crucial to save lives and limit heart damage.

In This Section:

What is a Heart Attack?

Who’s at Risk

Limiting Heart Muscle Damage