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Can pacemakers tame dangerous heart rhythms in congenital heart patients?

NCT ID NCT03209583

Knowledge-focused Sponsor: Ian Law 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study examines whether special pacemakers can effectively treat a common type of fast heart rhythm (atrial tachycardia) in people born with heart defects. Researchers will review medical records from up to 300 patients over 10 years to see if the pacemaker reduces the need for emergency shocks or heart medications. The goal is to learn which patient groups benefit most from this therapy.

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 300 people

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

Started

Sep 2018

Expected to finish

Sep 2027

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

Children and adults with structural congenital heart disease, with documented atrial arrhythmia (IART, CHB, SND), and with an ATD which has therapies enabled. Patients will all be seen by providers at the University of Iowa Children's Hospital.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: * must have structural CHD, an atrial arrhythmia and an ATD implanted. ATP must be turned on. Exclusion Criteria: * Other arrhythmias substrates such as Long QT (LQT), hypertrophic Cardiomyopathy (HCM), Catecholaminergic polymorphic ventricular tachycardia (CPVT), Arrhythmogenic Right Ventricular Cardiomyopathy.(ARVC), Brugada \& patients who undergo transplant, surgical maze, or ablation within 5 years of ATD implantation.

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Conditions

The condition(s) this trial relates to.

atrial tachycardia congenital heart disease

As listed by the trial registrant

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

Atrial arrhythmia Atrial tachycardia Congenital heart disease Pacemaker re-entrant tachycardia

How to take part

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

  1. The places running it

    15 sites in 2 countries. 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

  • Baylor College of Medicine

    RECRUITING

    Houston, Texas, 77030, United States

  • Children's Hospital of Michigan

    RECRUITING

    Detroit, Michigan, 48201, United States

  • Children's Hospital of Orange County (CHOC)

    RECRUITING

    Orange, California, 92868, United States

  • Indiana University Health

    NOT_YET_RECRUITING

    Indianapolis, Indiana, 46202, United States

  • Mayo Clinic

    NOT_YET_RECRUITING

    Rochester, Minnesota, 55901, United States

  • Memorial Healthcare System

    NOT_YET_RECRUITING

    Hollywood, Florida, 33021, United States

  • Norton Healthcare

    RECRUITING

    Louisville, Kentucky, 40202, United States

  • Rainbow Babies and Children's Hospital

    NOT_YET_RECRUITING

    Cleveland, Ohio, 44106, United States

  • The Hospital for Sick Children

    RECRUITING

    Toronto, Ontario, M5G 1X8, Canada

  • University of California, Los Angeles

    NOT_YET_RECRUITING

    Los Angeles, California, 90095, United States

  • University of Iowa Children's Hospital

    RECRUITING

    Iowa City, Iowa, 52242, United States

  • University of Michigan

    RECRUITING

    Ann Arbor, Michigan, 48109, United States

  • University of Utah

    RECRUITING

    Salt Lake City, Utah, 84132, United States

  • University of Wisconsin, Madison

    RECRUITING

    Madison, Wisconsin, 53792, United States

  • Vanderbilt University Medical Center

    NOT_YET_RECRUITING

    Nashville, Tennessee, 37232, United States

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