CClinicalTrials.gg
CompletedNCT04546555PACE HFpEFUpdated Jul 28, 2023

Physiologic Accelerated Pacing as a Treatment in Patients With Heart Failure With Preserved Ejection Fraction

An interventional study of Dual chamber pacemaker and Accelerated Physiologic Pacing in Heart Failure, Diastolic, sponsored by Daniel L Lustgarten. Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-07-28.

Sponsored by Daniel L Lustgarten · Not applicable, Interventional, and Other

From the registry’s dates

  • Primary completion was May 2023, 3 years 4 months ago, and no results have been posted to the registry.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Part I: Week 0-12: Quantify the effects of lower heart rate (HR) elevation on symptoms and function in patients with heart failure with preserved ejection fraction (HFpEF).

The investigators hypothesize that a personalized lower HR elevation employing physiological conduction system pacing in patients with HFpEF will decrease left atrial and left ventricular filling pressures. The investigators expect that this will result in a symptomatic and functional improvements and reduce NTproBNP levels. Additionally, HR elevation may have the potential to reduce the risk for heart failure hospitalization, atrial fibrillation (AF), and cerebrovascular stroke as these outcomes are increased in patients with a normal or preserved ejection fraction on HR lowering treatments.

After undergoing pacemaker implantation participants will be randomized to one out of three treatment arms (a) Bachmann's bundle pacing, (b) Bachmann's bundle and His bundle pacing, (c) no pacing with cross-over to alternative treatment arm at week 4 and 8, respectively. The lower pacing rate in arms a and b will be programmed to the personalized lower heart rate for 24 hours a day (the patient's intrinsic heart rate can exceed the personalized lower rate limit).

Part II: Week 13-20: Determine the effects of nocturnal heart rate elevation on symptoms and function in patients with HFpEF.

The investigators hypothesize that a moderate HR elevation to 110bpm delivered for 10 hours between 8PM to 6AM will provide additional hemodynamic benefits and will lead to beneficial ventricular remodeling.

After week 12 the participant will undergo randomization to one of two treatment arms (a) Bachmann's bundle and His bundle pacing, (b) Bachmann's bundle pacing, His bundle pacing and nocturnal pacing. The participant will cross-over to the other treatment arm after 4 weeks (study week 16).

02

Conditions studied

  • Heart Failure, Diastolic

Keywords

  • Physiologic Pacing
  • His Bundle Pacing
  • Bachmann's Bundle Pacing
  • HFpEF
03

In context

Heart Failure

5,697 studies on the registry are indexed under Heart Failure; 1,219 are open to participants now.

This study's enrollment of 20 is below the median of 72 across 3,733 interventional studies indexed under Heart Failure.

Browse Heart Failure studies →

Lead sponsor

This is the only study on the registry with Daniel L Lustgarten as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Left ventricular ejection fraction ≥ 55% (and diastolic volume \< 80ml/m2)
  • Controlled blood pressure: average blood pressure \<130/80 mmHg on office visits in the last 30 days or on home blood pressure log or patient has completed up-titration of antihypertensive medications
  • Heart failure hospitalization within the past 12 months OR Echocardiogram within the past 24 months that reported left ventricular hypertrophy AND an NTproBNP >400 with at least one symptom of heart failure (dyspnea on exertion, orthopnea or paroxysmal nocturnal dyspnea) and at least one sign of heart failure in the past 12 months (pulmonary edema or pleural effusion on chest x-ray, lower extremity edema, jugular venous distention, rales).
  • Study candidates are expected to remain available for follow-up visits.

Exclusion criteria

Exclusion Criteria:

  • Subject has an implanted cardiac pacemaker or defibrillator
  • Life expectancy is less than 12 months
  • Subject is unable or unwilling to perform the 6 Minute Walk Test and MLHFQ at all scheduled follow up visits
  • Subject has any of the following: uncontrolled hypertension (average blood pressure of >140/90 on office visits in the last 30 days or on home blood pressure log or actively undergoing uptitration of antihypertensive medication), more than moderate valvular disease, chronic hypoxic respiratory failure requiring supplemental oxygen, long-standing persistent atrial fibrillation
  • Baseline ECG with non-LBBB morphology AND QRS >150ms
  • Subject is currently enrolled or planning to enroll in a potentially confounding trial during the course of the study
05

Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Participant)
Enrollment
20 participants (actual)

Study arms

  • Placebo comparator
    No pacing

    Device: Dual chamber pacemaker

  • Experimental
    Bachmann's bundle pacing

    Device: Dual chamber pacemaker · Other: Accelerated Physiologic Pacing

  • Experimental
    Bachmann's bundle and His bundle pacing

    Device: Dual chamber pacemaker · Other: Accelerated Physiologic Pacing

  • Experimental
    Bachmann's bundle, His bundle and nocturnal pacing

    Device: Dual chamber pacemaker · Other: Accelerated Physiologic Pacing · Other: Nocturnal Pacing

Interventions

  • DeviceDual chamber pacemaker

    Dual chamber pacemaker implantation with Bachmann's bundle lead and His bundle lead placement.

  • OtherAccelerated Physiologic Pacing

    The lower rate limit will be programmed to an individualized heart rate.

  • OtherNocturnal Pacing

    In addition to adjustment of the lower rate limit to an individualized heart rate, nocturnal pacing a moderate HR elevation of 110bpm will be implemented between 8pm and 6am.

06

What researchers measure

Primary outcomes

  1. Change in composite Minnesota-Living-with-Heart-Failure-Questionnaire score

    Total score can range from 0 to 105, with higher scores indicating more significant impairment in health-related quality of life

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

  2. Percent change in NTproBNP

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

Secondary outcomes

  1. Change in 6 minute walk test

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

  2. Incident AF

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

  3. Burden of AF

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

  4. Hemodynamic changes by Echo

    Time frame: At 3 months and at 5 months

  5. Change in left ventricular mass/volume ratio by cardiac MRI

    Time frame: 5 months

Other outcomes

  1. Quantitative assessment of the risks of pacemaker implantation

    Incidence of pocket hematoma, pocket infection phrenic or diaphragmatic stimulation, lead endocarditis, lead dysfunction/dislocation, pneumothorax, hemopericardium, mortality

    Time frame: 1 month

  2. Doubling in baseline Troponin or NTproBNP

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

  3. >= 25% increase in systolic blood pressure

    Time frame: At 1 month, 2 months, 3 months, 4 months and 5 months

07

Study locations

1 site
  • University of Vermont Medical Center
    Burlington, Vermont 05401, United States
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 28, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04546555
Lead sponsor
Daniel L Lustgarten
Collaborators
Medtronic
Responsible party
Daniel L Lustgarten (Professor of Medicine, University of Vermont) — Sponsor-investigator
First posted
Sep 14, 2020
Start date
Feb 23, 2021
Primary completion
May 16, 2023
Completion
May 25, 2023
Last update
Jul 28, 2023

Oversight

FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jul 2023. You cannot join it, but the record below documents what was studied.

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