Cardiac resynchronization therapy (CRT) is treatment to help your heart beat with the right rhythm. It uses a pacemaker to restore the normal timing pattern of the heartbeat. The CRT pacemaker coordinates how timing of the upper heart chambers (atria) and the lower heart chambers (ventricles).

What is a cardiac resynchronization device?

Cardiac resynchronization therapy (CRT) uses a device called a biventricular pacemaker (also called a cardiac resynchronization device) that sends electrical signals to both lower chambers of your heart (ventricles).

Does CRT cure heart failure?

A CRT device does not cure heart failure. But many people who receive a CRT device notice that they feel better and experience relief from their symptoms, such as shortness of breath.