Comparing left bundle branch area pacing to traditional biventricular pacing for heart failure patients with atrial fibrillation

Clinical Efficacy of Left Bundle Branch Area Pacing for Patients With Permanent Atrial Fibrillation and Heart Failure :A Multi-center Randomized Controlled Trial

Not applicable Interventional Fu Wai Hospital, Beijing, China · NCT05549544

This study is testing whether a new pacing method called left bundle branch area pacing can help heart failure patients with atrial fibrillation feel better compared to the traditional biventricular pacing.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment60 (estimated)
Ages18 Years and up
SexAll
SponsorFu Wai Hospital, Beijing, China Academic / other
Locations5 sites (Beijing, Beijing and 4 other locations)
Trial IDNCT05549544 on ClinicalTrials.gov

What this trial studies

This multicenter, randomized controlled trial aims to evaluate the clinical efficacy of left bundle branch area pacing (LBBAP) compared to traditional biventricular pacing (BiVP) in patients suffering from permanent atrial fibrillation and heart failure. The study will enroll adult patients with left ventricular ejection fraction (LVEF) less than 50% who require ventricular pacing. Participants will be randomized to receive either LBBAP or BiVP after device implantation, and their heart function will be assessed at 3 and 6 months post-discharge. The primary endpoint is the change in LVEF from baseline to 6 months.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 with heart failure (LVEF <50%) and permanent atrial fibrillation requiring ventricular pacing.

Not a fit: Patients with a life expectancy of less than 12 months or those with prior mechanical tricuspid valve replacement may not 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 atrial fibrillation.

How similar studies have performed: While the approach of LBBAP is gaining interest, this specific comparison with BiVP is relatively novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients aged more than 18 years old
* Patients diagnosed with heart failure (LVEF\<50%) and have received optimal medical therapy for at least 3 months
* Patients with permanent atrial fibrillation (QRS duration \<130ms) which need ventricular pacing, including:

  1. LVEF\<50%, NYHA II-IV, drug-refractory atrial fibrillation with the fast ventricular rate, planned atrioventricular nodal ablation due to 1). anticipated low success rate of atrial fibrillation catheter ablation or 2). patients refused to receive catheter ablation or 3). refused to receive another catheter ablation after a previous history of failed procedures
  2. LVEF\<50%, NYHA II-IV, atrial fibrillation with slow ventricular rate, anticipated ventricular pacing burden ≥ 40%
* Written informed consent was provided

Exclusion Criteria:

* expected survival time is less than 12 months
* Prior history of mechanical tricuspid valve replacement and/or congenital heart disease (including dextrocardia, transposition of the great arteries, single left persistent left superior vena cava, etc.)
* Plan for PCI or CABG due to unstable angina or myocardial infarction in 3 months
* Surgery is required within 1 year due to severe structural heart disease
* Pregnancy, planned pregnancy or heart transplant
* Prior history of HCM and/or ventricular septal defect repair, who are unlikely to achieve successful LBBAP procedure.
* Failure of lead placement due to abnormal anatomy of the coronary sinus or enlarged right atrium, which makes it unable to switch from one pacing modality to another

Where this trial is running

Beijing, Beijing and 4 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 Left Bundle Branch Area PacingBiventricular PacingHeart FailurePermanent Atrial Fibrillation
Last reviewed 2026-06-13 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.