RecruitingRight Bundle-Branch BlockHeart FailureHis-bundle Pacing
His-Bundle Corrective Pacing in Heart Failure
Eligible age
18+ yrs
Accepts
All genders
Locations
10 states
Healthy volunteers
No
See if you qualify for this study
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About this study
The investigators aim to prospectively evaluate the efficacy and mechanism of benefit of His-bundle pacing enhanced cardiac resynchronization therapy (His-CRT) vs. cardiac resynchronization therapy (BIV-CRT) in patients with heart failure and right bundle branch block (RBBB).
Sponsor: University of Rochester
You may qualify if…
- ✓ 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)
You may not qualify if…
- ✕ 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 it's recruiting
Arizona
Phoenix
California
Los Angeles
Florida
Tampa
Illinois
Chicago
New Jersey
Ridgewood
New York
New York
North Carolina
Asheville
Pennsylvania
Philadelphia · Wilkes-Barre
Vermont
Burlington
Virginia
Richmond
Source: ClinicalTrials.gov · NCT05265520 · last updated 2026-02-09