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Cardiac Resynchronization Therapy

Understanding Cardiac Resynchronization Therapy (CRT)

Are you or a loved one living with congestive heart failure? Cardiac resynchronization therapy (CRT) may help.

At CardioVascular Health Clinic, we proudly offer a full range of vascular and cardiovascular treatment options, including the CRT heart device for patients diagnosed with a cardiac-related condition.

Whether you've been deemed a candidate for the CRT device or want to learn more about this innovative heart treatment option, we are here to help. Continue reading to learn more. 

What Is Cardiac Resynchronization Therapy?

Cardiac resynchronization therapy (CRT) is a heart care treatment for individuals with heart failure and specific electrical conduction issues. 

CRT involves using a specialized pacemaker called a biventricular or CRT device. CRT aims to improve the coordination of contractions between the heart's chambers (ventricles) to enhance overall heart function.

CRT is typically recommended for individuals with moderate to severe heart failure, especially those with left bundle branch block, a specific type of conduction delay in the heart. 

Cardiac resynchronization therapy is often used in conjunction with other heart failure treatments, such as medications and lifestyle modifications.

Cardiac Resynchronization Therapy Types

Heart resynchronization therapy is delivered through two main types of devices: biventricular pacemakers and biventricular defibrillators.

Here's a brief overview of each

  1. Biventricular Pacemakers (CRT-P)
    These devices are designed to coordinate the contractions of the heart's ventricles by sending electrical signals to the right and left ventricles simultaneously. Biventricular pacemakers are primarily used for patients with heart failure and conduction abnormalities but without a significant risk of life-threatening arrhythmias.

  2. Biventricular Defibrillators (CRT-D)
    CRT-D devices offer the same resynchronization benefits as biventricular pacemakers but with an added defibrillation function.
    In addition to synchronizing ventricular contractions, CRT-D devices can deliver electrical shocks (defibrillation) to restore normal heart rhythm in case of life-threatening irregularities.
    CRT-D devices are typically recommended for patients with heart failure who are also at risk of sudden cardiac death.

The choice between a biventricular pacemaker and a CRT-D depends on the patient's specific needs and health condition. 

Cardiac Resynchronization Therapy vs. Pacemaker

CRT and pacemakers are two different treatments for heart issues. 

CRT helps the heart pump better by coordinating its contractions, mainly for people with heart failure. Pacemakers control the heart rate, especially for those with irregular heart rhythms. 

CRT has two types: biventricular pacemakers and biventricular defibrillators, offering extra protection against life-threatening heart rhythms. Pacemakers also have different types: single-chamber, dual-chamber, and biventricular. 

The choice between CRT and a pacemaker depends on what a person needs for their heart condition.

Cardiac Resynchronization Therapy vs. ICD

CRT and implantable cardioverter defibrillators (ICDs) do different things for the heart. 

CRT helps the heart pump better, especially for people with heart failure. It makes the heart's contractions work together more efficiently. 

On the other hand, ICDs keep an eye on the heart's rhythm and can give a small shock if there's a dangerous rhythm problem. 

While CRT can be part of an ICD, standalone ICDs focus more on preventing sudden heart issues. 

The choice between CRT and ICD depends on what a person needs for their heart condition. Regular check-ups with doctors are essential to ensure these devices work well for effective heart care.

How Does a CRT Heart Device Work?

In heart failure, the electrical signals that coordinate heartbeats may become disrupted, leading to inefficient blood pumping. CRT addresses this by sending tiny electrical impulses to both ventricles simultaneously, helping them beat in a more synchronized manner. 

This synchronization improves the heart's pumping efficiency, reduces symptoms of heart failure, and enhances the patient's quality of life.

The CRT device is implanted through a procedure like pacemaker implantation, with leads placed in the right atrium, right ventricle, and left ventricle. 

Regular follow-up appointments are necessary to monitor the device and adjust settings.

Effective Cardiac Synchronization Therapy in Oklahoma

If you're living with heart failure, cardiac resynchronization therapy could be a beneficial option for you. 

At CardioVascular Health Clinic, our dedicated team evaluates and manages heart failure. CRT plays a crucial role in effectively managing your heart health. 

Contact us today for a consultation, and let's discuss how CRT could improve your quality of life. 

Patient Resources

We’re committed to timely, efficient, and affordable care.
Here is a collection of useful resources our new and existing patients need in one convenient location.
Please let us know if you need additional information or have any questions.


I’m about one month out and things are so much better. At my two week evaluation my symptom score had gone from a 27 to a 7, and I’m sure it’s even better now. That speaks volumes. Now that I’m post recovery, there is no incontinence, I go to the bathroom much less and there are no ED side effects like there are with other procedures. In regard to my quality of life, well, I don’t maintain my life based on my proximity to a bathroom anymore.

Blaine P., M.D.
Professional staff working in a beautiful facility with great doctors who sincerely care about their patients. Without Dr. Schmidt's skill, I would have needed heart bypass surgery instead of a stent. Follow-up has been thorough. I can't recommend them highly enough.
LeAnn H.

Dr. Jim Melton and all the staff are fantastic. He is an excellent surgeon and his team is GREAT!!!! I just had surgery at the surgery center, I have only great things to say about my experience. Without him I really don't think I would be here to write this. If you’re looking for a good cardiovascular team, they are a 5 star for sure.

Susie H.

Dr. Parsons and staff are amazing. He truly listened to me from the consult. Staff showed genuine care for my progress post procedure. I had my follow up appointment today so satisfied with results. Blake made me comfortable from the start. He is an activist for uterine fibroids treatment beyond the standard.

Tamara M.

Professional and caring staff. Dr. Smith is very knowledgeable and shows genuine concern for your personal health. I enjoyed the background music in the procedure room, it really adds to the relaxing atmosphere.

David L.

Dr. John Schrader is the most personable doctor we know. He stays on top of my dads health care and is genuinely concerned about his health. We never leave his office with questions. He answers them all. Even questions we don’t think of. Always professional but never cold or bad bedside manner. In our opinion he is THE BEST around.
Thank you Dr Schrader.

Kathy J.

I came to Dr. Warren by a self referral for mals when it took me 8yrs 50+ doctors and thousands of dollars spent on no answers. My first visit I was scared I was just going to be gaslighted just like the past however I was pleasantly shocked when Dr. Warren immediately believed me. She took the time to review many disk I had brought from past tests. She never once dismissed me and listened to ever word I had to say. She scheduled one last test to confirm the diagnosis then I was scheduled for surgery right away. Surgery was a success and I can’t thank her and her staff enough. Dr. Warren truly saved my life.

Angie W.

Dr. Garner literally saved my life 18 months ago and I've followed him to his new practice with Cardiovascular Health. He explains things so clearly, listens and is just a very nice person. His staff is great, too! I highly recommend!

D Watts

Some of the nicest staff that I have ever dealt with!! They have been so incredibly awesome to my mom!! Would definitely recommend them to anyone!! Thank you so much for being so great with her!!

Christy G.

The staff, the nurses, and Dr. Parsons were all amazing. Everything was simple and went well – very Bravo Zulu (military phrase meaning "well done"). In addition to the great staff at CardioVascular Health Clinic, the facilities were clean and well maintained. I have no complaints about anything. The whole experience was A1. I would recommend Dr. Parsons to anyone. He made a huge impact on my life.

John W.

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