Clinical trial Recruiting at 7 sites Interventional Ages 18 and up

Atrioventricular node ablation with conduction system pacing versus drug rate control for HFpEF patients with permanent atrial fibrillation

Official title: Atrioventricular (AV) Node Ablation and Conduction System Pacing in Patients With Well Controlled Permanent Atrial Fibrillation (AF), Heart Failure and Preserved Ejection Fraction: Heart Rate Regularization vs. Medical Rate Control

Run by French Cardiology Society · NCT06833138 · Data updated 2026-11-12

This will test whether regularizing heart rate by combining atrioventricular node ablation with physiological (conduction system) pacing lowers deaths or heart-failure hospital stays compared with medication in people with well-controlled permanent atrial fibrillation and HFpEF.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment266 (estimated)
SponsorFrench Cardiology Society
Academic / other
Locations17 sites (Besançon and 16 other locations)
StatusRecruiting
StartedSeptember 10, 2025
Main results expectedMay 31, 2029
Study endsDecember 31, 2029
Registry record updatedSeptember 11, 2026
Trial IDNCT06833138 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with permanent atrial fibrillation for more than 6 months, preserved LVEF (≥50%), at least one heart-failure hospitalization in the prior year, NYHA class ≥2, narrow QRS (≤120 ms), and average heart rate ≤110/min on 24-hour Holter.

Probably not a fit

Patients eligible for atrial fibrillation catheter ablation, with life expectancy under 12 months, severe uncontrolled comorbidities (for example advanced kidney disease), or those without prior heart-failure hospitalization or with wide QRS are less likely to benefit from this approach.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Adults with well-controlled permanent atrial fibrillation and heart failure with preserved ejection fraction are randomized to receive either atrioventricular node ablation plus physiological (conduction system) pacing or optimal pharmacological rate control. The trial compares time to a composite endpoint of all-cause mortality, hospitalization for heart failure, or need for intravenous diuretics over a 24-month follow-up. Participants attend clinic visits at baseline and at roughly 3, 12, and 24 months for device checks and outcome assessment. The study targets patients with prior heart-failure hospitalization, preserved LVEF, narrow QRS, and average heart rate ≤110/min on 24-hour Holter monitoring.

Why it matters

Potential benefit: If successful, the approach could reduce deaths and heart-failure hospitalizations by stabilizing beat-to-beat heart rate while avoiding the harms of nonphysiological right ventricular pacing.

How similar studies have gone: Previous trials such as APAF-CRT showed mortality and hospitalization benefit from AV node ablation plus cardiac resynchronization therapy in HF with AF, but specific testing of conduction-system (physiological) pacing in HFpEF is largely novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Permanent atrial fibrilation \> 6 months
* Preserved Left Ventricular Ejection Fraction ≥ 50%
* ≥ 1 heart failure hospitalization in the previous year
* NYHA (New York Heart Association) score ≥ 2
* Presence of at least one of the following criteria related to diastolic dysfunction:

  * E/e' ratio \> 9
  * Left Ventricular mass \> 95 g/m2 (female) or \> 115 g/m2 (male) with h/R ratio \> 0.42
  * NT pro BNP (B-type Natriuretic Peptide) \> 365 pg/mL or BNP (B-type Natriuretic Peptide) \> 105 pg/mL
* Narrow QRS ≤ 120 ms
* Average heart rate ≤ 110/min on 24 hours Holter monitoring
* Age over 18-year-old
* Capacity to understand the nature of the study, legal ability and willingness to give informed consent
* Patient covered by a social insurance
* Effective contraception and a negative pregnancy test in women of a childbearing age

Exclusion Criteria:

* Patient eligible for atrial fibrilation catheter ablation
* Life expectancy \< 12 months
* Severe chronic kidney disease (estimated Glomerular Filtration Rate ≤ 20 ml/1,73 m2)
* Severe respiratory disease (severe chronic obstructive pulmonary disease with Gold ≥ 3 and/or chronic oxygen therapy)
* Class III obesity (Body Mass Index ≥ 40)
* Confirmed or suspected infiltrative cardiomyopathy (amyloidosis, sarcoidosis, Fabry disease, others)
* Obstructive hypertrophic cardiomyopathy
* Previous implanted devices (Pacemaker / Implantable Cardioverter-Defibrillator / Cardiac Resynchronization Therapy)
* Other indication for pacemaker implantation
* Indication for implantable cardioverter-defibrillator
* Ambulatory ≤ 50% of time
* Pregnant women
* Breast-feeding women

Where it's running

  • CHRU de Caen - Hôpital Côte de Nacre
    Caen, France
    Recruiting
  • CHRU de Tours - Hôpital Trousseau
    Chambray-lès-Tours, France
    Recruiting
  • Groupe Hospitalier La Rochelle-Ré-Aunis
    La Rochelle, France
    Recruiting
  • GHICL Allome - Hôpital St Philibert
    Lomme, France
    Recruiting
  • Clinique Millenaire
    Montpellier, France
    Recruiting
  • CHU de Poitiers - Centre Cardiovasculaire
    Poitiers, France
    Recruiting
Show 11 more locations
  • CHU de Rouen - Hôpital Charles Nicolle
    Rouen, France
    Recruiting
  • CHU de Besançon - Hôpital Jean Monjoz
    Besançon, France
    Not yet recruiting
  • CHU de Clermont-Ferrand - Hôpital Gabriel Montpied
    Clermont-Ferrand, France
    Not yet recruiting
  • CHU Grenoble Alpes
    Grenoble, France
    Not yet recruiting
  • CHU de Lille - Institut Cœur-Poumons
    Lille, France
    Not yet recruiting
  • CHU de Nantes - Hôpital Nord Laennec
    Nantes, France
    Not yet recruiting
  • Institut Montsouris
    Paris, France
    Not yet recruiting
  • CHU de Bordeaux - Hôpital Cardiologique du Haut-Lévèque
    Pessac, France
    Not yet recruiting
  • CHU de Rennes - Hôpital Pontchallou
    Rennes, France
    Not yet recruiting
  • Institut Arnault Tzanck
    Saint-Laurent-du-Var, France
    Not yet recruiting
  • CHRU de Nancy - Hôpitaux de Brabois
    Vandœuvre-lès-Nancy, France
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Remote rehabilitation for HFpEF patients using telerehabilitation

    A home-based telerehabilitation program is being tested to see if it is safe and helpful for people with heart failure with preserved ejection fraction.

    Recruiting at 3 sites American Heart of Poland · Chrzanów and 2 other locations · NCT07918209

  • EDG-15400 in adults with HFpEF: a phase 2 study

    This phase 2 study tests different doses of EDG-15400 against placebo in adults with HFpEF to see if it is safe and tolerable.

    Recruiting at 4 sites Phase 2 Edgewise Therapeutics, Inc. · Birmingham, Alabama and 27 other locations · NCT07795814

  • Incretin therapy with tirzepatide for obesity-related HFpEF

    A 15-month study will test whether tirzepatide helps people with obesity and HFpEF by reducing plasma volume.

    Recruiting Phase 4 Columbia University · New York, New York · NCT07554638

  • Boosted exercise with group coaching for HFpEF

    This trial tests a blended, guided exercise program with group coaching and remote monitoring to see if it helps older adults with HFpEF improve activity and health at a lower cost.

    Recruiting Wake Forest University Health Sciences · Winston-Salem, North Carolina · NCT07413198

  • Exercise cardiac MRI for heart failure with preserved ejection fraction

    This study will try low-field exercise cardiac MRI to see if it can diagnose, describe, and predict risk in people with HFpEF compared with those who have non-cardiac breathlessness and healthy volunteers.

    Recruiting Mayo Clinic · Rochester, Minnesota · NCT07401771

  • HRS-1893 for heart failure with preserved ejection fraction

    This trial will test whether HRS-1893 is safe and tolerable in adults aged 40 and older who have heart failure with preserved ejection fraction.

    Recruiting Phase 2 Shandong Suncadia Medicine Co., Ltd. · Shanghai, Shanghai Municipality · NCT07269717

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.