Cardiac Resynchronization Therapy from a Team of Heart Experts 

Cardiac resynchronization therapy (CRT) is an advanced heart failure treatment for some people. It helps the hearts chambers beat in a more coordinated way. In many cases, a problem with the heart’s electrical timing, often related to a conduction delay, causes the lower chambers (ventricles) to pump blood out of sync. When the heart can’t pump efficiently, blood flow can drop and fluid can build up in the lungs and legs.  

CRT uses a special pacemaker to improve the timing of each heartbeat. At Keck Medicine of USC, our specialists are trained to implant CRT devices and coordinate follow-up care to support you with symptom relief, stronger stamina and long-term heart health. 

How We Ensure You’re Fully Prepared for Cardiac Resynchronization Therapy 

Your care team will review your medical history, age and treatment goals to better understand your heart health. They may order additional blood tests and cardiac imaging, such as an MRI or echocardiogram (ECG/EKG). On the day of your procedure, you’ll need to fast for at least six hours beforehand. Our experts will answer your questions and explain what you can expect so you feel confident going into surgery. 

How Cardiac Resynchronization Therapy Works 

CRT is a minimally invasive heart procedure. You receive medicine through an IV in your hand or arm to help you relax. Your care team uses local anesthesia to numb the area for the pacemaker placement.  

A heart rhythm specialist places three wires, called leads, through a vein near your collarbone. Using X-ray guidance, the leads move into the correct areas of the heart. The ends of the leads connect to the CRT device, which sits under the skin below your collarbone (less often, in the abdomen). The device sends small electrical signals to help your heart chambers beat in sync. Your team checks the device before they close the incision. 

If you’re at risk of sudden cardiac arrest, your care team may pair CRT with a defibrillator (CRT-D). This approach includes ICD implantation, which allows the device to detect dangerous heart rhythms and deliver a shock to restore a safer rhythm. 

After Cardiac Resynchronization Therapy 

You’ll usually have an overnight stay after receiving your CRT device. Plan for someone to drive you home from the hospital the next day. Your care team may ask you to keep your arm still for about 12 hours to help the wires stay in place. 

Most people can return to normal activities within a few days. Our team will provide specific recovery instructions. You may need to limit upper-body and arm activities. Avoid strenuous exercise and heavy lifting for about a month.  

CRT devices last several years. At Keck Medicine, our cardiovascular specialists help you get the most out of your device with regular checks and follow-up visits. We can also schedule cardiac rehabilitation to help you safely increase your physical activity over time.

Minimally Invasive Cardiac Care Close to Home

Our advanced technologies and minimally invasive heart surgeries help you recover more quickly and feel better.

You can trust our comprehensive care team to guide you through each step of heart testing, treatment and recovery.

We provide specialized care for even the most complex conditions.