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Thousands tracked to see how tiny pacemaker performs in real life

NCT ID NCT02536118

Knowledge-focused Sponsor: Medtronic Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 follows about 3100 people who receive a Micra pacemaker to treat slow heart rate (bradycardia). Researchers want to see how safe and effective the device is in routine medical practice, not just in controlled trials. Participants are monitored for complications and device performance for up to 5 years after implantation.

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

3,100 people

The number who actually took part.

Started

Jul 2015

Expected to finish

Apr 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Who is studied

Patients intended to be implanted with a Micra system are eligible for enrollment and all patients must be consented prior to the implant. Only geographies with regulatory approval for the Micra system are eligible to enroll patients (see locations section). All patients enrolled and successfully implanted with a Micra system will be followed for a minimum of 9 years, unless a patient is exited from the registry due to an unavoidable reason. If a Micra system is not successfully implanted, patients will be exited from the registry unless a Micra System and/or implant procedure related event is identified, for which the patient will be followed until the event is resolved or no further actions need to be taken.

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: * Patient or legally authorized representative provides written authorization and/or consent per institution and geographical requirements * Patient is intended to receive or be treated with a Micra Transcatheter Pacing System and must be enrolled prior to the TPS implant procedure Exclusion Criteria: * Patient who is, or is expected to be inaccessible for follow-up * Patient with exclusion criteria required by local law * Patient is currently enrolled in or plans to enroll in any concurrent drug and/or device study that may confound results

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Conditions

The condition(s) this trial relates to.

Bradycardia

As listed by the trial registrant

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

Bradycardia

Contacts and locations

Locations

  • Study site

    Birmingham, Alabama, United States

  • Study site

    Los Angeles, California, United States

  • Study site

    Redwood City, California, United States

  • Study site

    New Haven, Connecticut, United States

  • Study site

    Washington D.C., District of Columbia, United States

  • Study site

    Clearwater, Florida, United States

  • Study site

    Jacksonville, Florida, United States

  • Study site

    Safety Harbor, Florida, United States

  • Study site

    Atlanta, Georgia, United States

  • Study site

    Indianapolis, Indiana, 46202, United States

  • Study site

    West Des Moines, Iowa, United States

  • Study site

    Kansas City, Kansas, United States

  • Study site

    Edgewood, Kentucky, United States

  • Study site

    Louisville, Kentucky, United States

  • Study site

    Salisbury, Maryland, United States

  • Study site

    Silver Spring, Maryland, United States

  • Study site

    Takoma Park, Maryland, United States

  • Study site

    Boston, Massachusetts, United States

  • Study site

    Ann Arbor, Michigan, United States

  • Study site

    Lansing, Michigan, United States

  • Study site

    Ypsilanti, Michigan, United States

  • Study site

    Minneapolis, Minnesota, United States

  • Study site

    Rochester, Minnesota, United States

  • Study site

    Saint Cloud, Minnesota, United States

  • Study site

    Columbia, Missouri, United States

  • Study site

    Kansas City, Missouri, United States

  • Study site

    Morristown, New Jersey, United States

  • Study site

    Ridgewood, New Jersey, United States

  • Study site

    Huntington, New York, United States

  • Study site

    New York, New York, United States

  • Study site

    Poughkeepsie, New York, United States

  • Study site

    Durham, North Carolina, United States

  • Study site

    Raleigh, North Carolina, United States

  • Study site

    Akron, Ohio, United States

  • Study site

    Cincinnati, Ohio, United States

  • Study site

    Cleveland, Ohio, United States

  • Study site

    Columbus, Ohio, United States

  • Study site

    Toledo, Ohio, United States

  • Study site

    Oklahoma City, Oklahoma, United States

  • Study site

    Portland, Oregon, United States

  • Study site

    Allentown, Pennsylvania, United States

  • Study site

    Lancaster, Pennsylvania, United States

  • Study site

    Philadelphia, Pennsylvania, United States

  • Study site

    Pittsburgh, Pennsylvania, United States

  • Study site

    Germantown, Tennessee, United States

  • Study site

    Nashville, Tennessee, United States

  • Study site

    Austin, Texas, United States

  • Study site

    Dallas, Texas, United States

  • Study site

    Fort Worth, Texas, United States

  • Study site

    Houston, Texas, United States

  • Study site

    Plano, Texas, United States

  • Study site

    Milwaukee, Wisconsin, United States

  • Study site

    Brussels, Belgium

  • Study site

    Edegem, Belgium

  • Study site

    Leuven, Belgium

  • Study site

    Kingston, Ontario, Canada

  • Study site

    Montreal, Canada

  • Study site

    Prague, Czechia

  • Study site

    Aarhus, Denmark

  • Study site

    Copenhagen, Denmark

  • Study site

    Hillerød, Denmark

  • Study site

    Odense, Denmark

  • Study site

    Annecy, France

  • Study site

    Bayonne, France

  • Study site

    Bordeaux, France

  • Study site

    Brest, France

  • Study site

    Chambray-lès-Tours, France

  • Study site

    Clermont-Ferrand, France

  • Study site

    Grenoble, France

  • Study site

    Lille, France

  • Study site

    Marseille, France

  • Study site

    Montpellier, France

  • Study site

    Nancy, France

  • Study site

    Nantes, France

  • Study site

    Neuilly-sur-Seine, France

  • Study site

    Rennes, France

  • Study site

    Rouen, France

  • Study site

    Saint-Denis, France

  • Study site

    Saint-Etienne, France

  • Study site

    Strasbourg, France

  • Study site

    Toulouse, France

  • Study site

    Villeurbanne, France

  • Study site

    Aachen, Germany

  • Study site

    Berlin, Germany

  • Study site

    Cologne, Germany

  • Study site

    Dresden, Germany

  • Study site

    Düsseldorf, Germany

  • Study site

    Frankfurt, Germany

  • Study site

    Hamburg, Germany

  • Study site

    Hanover, Germany

  • Study site

    Heidelberg, Germany

  • Study site

    Jena, Germany

  • Study site

    Mainz, Germany

  • Study site

    Münster, Germany

  • Study site

    Tübingen, Germany

  • Study site

    Ulm, Germany

  • Study site

    Athens, Greece

  • Study site

    Marousi, Greece

  • Study site

    Budapest, Hungary

  • Study site

    Reykjavik, Iceland

  • Study site

    Ashkelon, Israel

  • Study site

    Jerusalem, Israel

  • Study site

    Ramat Gan, Israel

  • Study site

    Bari, Italy

  • Study site

    Bologna, Italy

  • Study site

    Brescia, Italy

  • Study site

    Cotignola, Italy

  • Study site

    Milan, Italy

  • Study site

    Pisa, Italy

  • Study site

    Roma, Italy

  • Study site

    Mitaka-shi, Tokyo, Japan

  • Study site

    Shinagawa, Tokyo, Japan

  • Study site

    Suita, Japan

  • Study site

    Yokohama, Japan

  • Study site

    Safat, Kuwait

  • Study site

    Amsterdam, Netherlands

  • Study site

    Breda, Netherlands

  • Study site

    Eindhoven, Netherlands

  • Study site

    Enschede, Netherlands

  • Study site

    Groningen, Netherlands

  • Study site

    Leiden, Netherlands

  • Study site

    Maastricht, Netherlands

  • Study site

    Nieuwegein, Netherlands

  • Study site

    Rotterdam, Netherlands

  • Study site

    The Hague, Netherlands

  • Study site

    Christchurch, New Zealand

  • Study site

    Bergen, Norway

  • Study site

    Trondheim, Norway

  • Study site

    Poznan, Poland

  • Study site

    Zabrze, Poland

  • Study site

    Lisbon, Portugal

  • Study site

    Jeddah, Saudi Arabia

  • Study site

    Riyadh, Saudi Arabia

  • Study site

    A Coruña, Spain

  • Study site

    Barcelona, Spain

  • Study site

    Santiago de Compostela, Spain

  • Study site

    Toledo, Spain

  • Study site

    Vitoria-Gasteiz, Spain

  • Study site

    Uppsala, Sweden

  • Study site

    Basel, Switzerland

  • Study site

    Bern, Switzerland

  • Study site

    Fribourg, Switzerland

  • Study site

    Geneva, Switzerland

  • Study site

    Lausanne, Switzerland

  • Study site

    Lugano, Switzerland

  • Study site

    Zurich, Switzerland

  • Study site

    Birmingham, United Kingdom

  • Study site

    Bristol, United Kingdom

  • Study site

    Leeds, United Kingdom

  • Study site

    Leicester, United Kingdom

  • Study site

    Liverpool, United Kingdom

  • Study site

    London, United Kingdom

  • Study site

    Manchester, United Kingdom

  • Study site

    Middlesbrough, United Kingdom

  • Study site

    Nottingham, United Kingdom

  • Study site

    Southampton, United Kingdom

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