Evaluating His-Bundle Pacing for Heart Failure Treatment

His-Bundle Corrective Pacing in Heart Failure

Not applicable Interventional University of Rochester · NCT05265520

This study is testing if a new heart pacing method can help people with heart failure and a specific heart block feel better compared to the standard treatment.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment120 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity of Rochester Academic / other
Locations14 sites (Phoenix, Arizona and 13 other locations)
Trial IDNCT05265520 on ClinicalTrials.gov

What this trial studies

This clinical trial aims to compare the effectiveness of His-bundle pacing enhanced cardiac resynchronization therapy (His-CRT) against traditional cardiac resynchronization therapy (BIV-CRT) in patients suffering from heart failure and right bundle branch block (RBBB). The study will assess improvements in left ventricular ejection fraction (LVEF) and various biomarkers over a period of 24 months. Participants will be monitored for changes in their functional status and quality of life, providing insights into the mechanisms of benefit from His-CRT. The trial is designed to be prospective and randomized, involving multiple centers to ensure a diverse patient population.

Who should consider this trial

Good fit: Ideal candidates include adults aged 18 and older with heart failure symptoms and specific ECG criteria indicating the need for cardiac resynchronization therapy.

Not a fit: Patients with left bundle branch block or those on a heart transplant list are unlikely to benefit from this study.

Why it matters

Potential benefit: If successful, this approach could lead to improved heart function and quality of life for patients with heart failure and RBBB.

How similar studies have performed: While the approach of His-bundle pacing is gaining interest, this specific comparison with BIV-CRT is relatively novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 years or older (no upper age limit)
* Optimal medical therapy for heart failure by current guidelines
* Class IIa or IIb guideline-based indication for CRT-D implant in RBBB patients, including one of the following:

  * New York Heart Association (NYHA) class II HF symptoms, LVEF ≤ 30% and QRS≥ 150 ms (IIb); OR
  * NYHA class III-IV a HF, LVEF ≤ 35%, and QRS duration ≥ 150 ms (IIa); OR
  * NYHA class III-IV a HF, LVEF ≤ 35%, and QRS duration 120-149 ms (IIb)

Exclusion Criteria:

* Unable to obtain most recent imaging data from echocardiogram within 1 year prior to date of randomization
* Left bundle branch block (LBBB) or intraventricular conduction delay (IVCD) ECG morphology
* Unable or unwilling to follow study protocol
* Less than 12 months life expectancy at consent
* Pregnancy or planned pregnancy during duration of the study
* On heart transplant list or likely to undergo heart transplant

Where this trial is running

Phoenix, Arizona and 13 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Right Bundle-Branch BlockHeart FailureHis-bundle PacingCardiac Resynchronization Therapy
Last reviewed 2026-06-09 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.