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Heart pacing study aims to Fine-Tune electrical signals

NCT ID NCT03008291

Knowledge-focused Sponsor: Yong-Mei Cha Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how a special pacing method called His bundle pacing affects the heart's electrical activity in 80 people with bradycardia (slow heart rate) or heart failure. Researchers will take extra measurements during standard pacemaker implantation to see if this technique can normalize electrical conduction. The goal is to better understand how to pace the heart more naturally.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
His bundle pacing and left bundle area pacing (procedures)
What this could lead to
If successful, this could lead to better pacing techniques that improve heart function in people with heart failure or slow heart rates.
What could go wrong
This is an early-stage, small study (80 participants) focused on measurements, not treatment outcomes. The findings may not lead to direct benefits or apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Oct 2016

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Subjects will be recruited from the heart clinic at Mayo Clinic in Rochester, Minnesota.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: HF Group * Clinically recommended to undergo PM, CRT-P, or CRT-D implantation or HIBP/LBAP (including HIBP/LBAP for patients with HF, for patients who have failed CRT implant or patients who are CRT non-responders) * Any QRS duration * LVEF ≤ 50% AV Block/Bradycardia Group * Recommended to undergo dual chamber pacemaker implantation * Any AV block or Sinus Bradycardia Exclusion Criteria: * Age \< 18 years * Pregnant

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Conditions

The condition(s) this trial relates to.

atrioventricular block Bradycardia heart failure

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Bradycardia Heart failure

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Mayo Clinic

    RECRUITING

    Rochester, Minnesota, 55905, United States

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