CRT Pacemakers

What Is a Cardiac Resynchronization Therapy Pacemaker (CRT-P)?

A pacemaker is an implantable, battery-powered minicomputer that sends electrical pulses to your heart whenever it detects a slow heartbeat or no heartbeat at all. When it senses a slow heartbeat or lack of heartbeat, it sends electrical impulses to restore a normal rhythm.

Cardiac resynchronization therapy pacemakers, or CRT-Ps, treat heart failure by resynchronizing electrical impulses in the heart’s four chambers, improving the heart’s ability to pump blood to the body effectively and efficiently.

How a pacemaker works

Most pacemakers have two components: a pulse generator (sometimes called a can) and  pacemaker leads. Another part of pacemaker treatment is an external programmer (computer) that programs the pulse generator.

  • Pulse generator: About the size of two stacked silver dollars, this device contains a battery and circuitry that sends electrical impulses to the heart, stimulating it to beat at a normal rhythm. It is usually implanted under the skin of the upper chest, or sometimes under the skin of the abdomen.
  • Pacemaker leads: Leads are thin, flexible wires that run from the pulse generator to the heart. A lead detects your heart’s rhythm and sends this information to the pulse generator. A traditional pacemaker has one or two leads that are placed into the right side of your heart. A CRT-P has an additional lead placed on the left side of the heart to make the left ventricle beat at the same time as the right. 
  • Pacemaker programmer: The programmer allows your doctor to adjust your therapy to meet your particular needs. He or she downloads the information stored on your pacemaker and may use it to change your pacemaker’s settings, if needed.

Some pacemakers have the ability to communicate wirelessly with your hospital or clinic, sending information through remote monitoring. Your doctor may also monitor the pressure in your pulmonary artery (PA) using a PA pressure monitoring system.

The St. Jude Medical commitment to safe, reliable and effective CRT-Ps

Since the first implantable pacemaker was developed in 1958, millions have benefited from pacemaker therapy. The remarkable story of the first cardiac pacemaker is embedded in St. Jude Medical’s history, and today, St. Jude Medical has once again demonstrated its commitment to revolutionizing cardiac rhythm management with the introduction of quadripolar cardiac resynchronization therapy pacing. The Quadra Allure MP™ cardiac resynchronization therapy pacemaker (CRT-P) featured below is an example of our innovations in cardiac rhythm management.

NameQuadra Allure MP™ CRT-P

Learn more about the Quadra Allure MP™ CRT-P.