New blood thinner may simplify life after valve replacement

NCT ID NCT04258488

First seen Jun 27, 2026 · Last updated Jul 07, 2026 · Updated 2 times

Summary

This study tests whether a newer blood thinner (rivaroxaban) works as well as the standard drug (warfarin) for preventing clots and bleeding in people who have a mechanical aortic valve. About 1,300 adults who had valve surgery at least 3 months ago will take one of the two pills daily for a year. The goal is to see which drug better prevents serious heart problems and bleeding complications.

What this could mean

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

Active substance
Rivaroxaban (oral blood thinner)
What this could lead to
If successful, this could offer a simpler, more predictable blood-thinning option for people with mechanical aortic valves, potentially reducing the need for frequent blood tests.
What could go wrong
This is a phase 4 trial, so the drug is already approved for other uses, but its safety and effectiveness for this specific valve type are not yet proven. There is a risk of bleeding or clotting events.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Ajou University Hospital

    RECRUITING

    Suwon, South Korea

  • Asan Medical Center

    RECRUITING

    Seoul, 138-736, South Korea

  • Buchen Sejong Hospital

    RECRUITING

    Bucheon-si, South Korea

  • Chonnam National University Hospital

    RECRUITING

    Gwangju, South Korea

  • Dong-A University Hospital

    RECRUITING

    Busan, South Korea

  • Eulji University Uijeongbu Hospital

    RECRUITING

    Uijeongbu-si, South Korea

  • GangNeung Asan Hospital

    RECRUITING

    Gangneung, South Korea

  • Keimyung University Dongsan Hospital

    RECRUITING

    Daegu, South Korea

  • Korea University Anam Hospital

    RECRUITING

    Seoul, South Korea

  • Pusan National University Yangsan Hospital

    RECRUITING

    Yangsan, South Korea

  • Samsung Medical Center

    RECRUITING

    Seoul, South Korea

  • Seoul National University Bundang Hospital

    RECRUITING

    Seongnam, South Korea

  • Seoul National University Hospital

    RECRUITING

    Seoul, South Korea

  • Severance Hospital

    NOT_YET_RECRUITING

    Seoul, South Korea

  • St. Vincent's Hospital, Catholic University of Korea

    NOT_YET_RECRUITING

    Suwon, South Korea

  • Ulsan University Hospital

    NOT_YET_RECRUITING

    Ulsan, South Korea

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