Skip navigation
A service of the U.S. National Library of Medicine
From the National Institutes of HealthNational Institutes of Health
   Other Topics: A B C D E F G H I J K L M N O P Q R S T U V W XYZ All Topics

Coronary Artery Bypass Surgery

Also called: Bypass surgery, CABG, Coronary artery bypass graft 
 
 

If you have coronary artery disease (CAD), the arteries that supply blood and oxygen to the heart muscle become hardened and narrowed. If lifestyle changes and medicines don't help, your doctor may recommend coronary artery bypass surgery.

The surgery uses a piece of a vein from the leg or artery from the chest or wrist. The surgeon attaches this to the coronary artery above and below the narrowed area or blockage. This allows blood to bypass the blockage. Some people need more than one bypass.

You may need bypass surgery for various reasons. Another procedure for CAD, angioplasty, may not have widened the artery enough. In some cases, the angioplasty tube can't reach the blockage.

A bypass also can close again. This happens in more than 10 percent of bypass surgeries, usually after 10 or more years.

NIH: National Heart, Lung, and Blood Institute

 
 
 
 

 

 
 
Basics Learn More Multimedia & Cool Tools
 

 

 
Research Reference Shelf For You
 

 

 

 

 

Illustration of the heart featuring the right coronary artery

National Institutes of Health

Languages

 

 

 

Coronary Artery Bypass Surgery - Multiple Languages