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Tiny heart pump trial halted early – what went wrong?

NCT ID NCT01831544

Terminated Disease control Sponsor: Medtronic Cardiac Rhythm and Heart Failure Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study tested a small, implantable heart pump called the HeartWare MVAD in 11 people with advanced heart failure. The goal was to see if the device could safely help the heart pump blood. However, the trial was stopped early, so we have limited information on how well it works or its long-term safety.

What this could mean

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

Active substance
HeartWare MVAD System (a miniaturized heart pump)
What this could lead to
If successful, this device could offer a new option to keep people with severe heart failure alive while they wait for a transplant or recover heart function.
What could go wrong
The trial was terminated early with only 11 participants, so results are very limited. The device may carry risks like bleeding, infection, or pump failure.

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

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Conditions

The condition(s) this trial relates to.

advanced heart failure heart failure

As listed by the trial registrant

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

HEART FAILURE

Contacts and locations

Locations

  • Duesseldorf University Hospital

    Düsseldorf, 40225, Germany

  • Freeman Hospital

    Newcastle upon Tyne, NE77DN, United Kingdom

  • German Heart Institute Berlin DHZB

    Berlin, 13353, Germany

  • Hannover Medical School MHH

    Hanover, 30625, Germany

  • Hospitalier Pitié-Salpétrière

    Paris, 75013, France

  • Medical University AKH Vienna

    Vienna, 1090, Austria

  • Papworth Hospital NHS Foundation

    Papworth Everard, CB233RE, United Kingdom

  • St. Vincents Hospital

    Darlinghurst, 2010, Australia

  • The Heart and Diabetes Center NRW

    Bad Oeynhausen, 32545, Germany

  • Uniklinik Hamburg Eppendorf (UKE)

    Hamburg, 20245, Germany

  • University of Leipzig Heart Center

    Leipzig, 04289, Germany

More trials for these conditions

Other studies related to the condition(s) this trial covers.