Can a brief blood thinner pause prevent bleeding without raising stroke risk?
NCT ID NCT05801068
First seen Aug 21, 2026 · Last updated Aug 21, 2026
Summary
This study looks at whether a predefined plan to pause and restart blood thinners (factor Xa inhibitors) around minor procedures—like dental work, cataract surgery, or routine endoscopy—can reduce bleeding in people with atrial fibrillation. It follows 2,500 adults who take rivaroxaban, apixaban, or edoxaban and are scheduled for a minor bleeding-risk procedure. The goal is to see if this approach lowers major bleeding within 30 days without increasing the chance of stroke or blood clots.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Factor Xa inhibitor (rivaroxaban, apixaban, or edoxaban) with a protocol for pausing and resuming around minor procedures
- What this could lead to
- If successful, this could provide a safer, standardized way to manage blood thinners around minor surgeries, reducing bleeding complications while protecting against strokes.
- What could go wrong
- This is an observational study, so it cannot prove cause and effect. Results may vary by patient and procedure, and there is always a risk of bleeding or clotting despite the protocol.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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2,500 people
The number who actually took part.
- Started
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Aug 2020
- Finished
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May 2024
- Lead sponsor
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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.
- Ages
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20 years and older
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Aged \>20 years * With rivaroxaban, apixaban, or edoxaban * History of non-valvular atrial fibrillation * Scheduled minor bleeding risk procedure(s) (dental procedure, cataract/glaucoma surgery, diagnostic GI endoscopy) Exclusion Criteria: * Pregnancy * With rivaroxaban or edoxaban at afternoon * Mental disorder * Contraindication to rivaroxaban, apixaban, edoxaban * Moderate or severe valvular heart disease, or with prosthetic heart valves * With antiplatelet drugs * History of systemic embolism or ischemic stroke within the last 12 months * scheduled therapeutic endoscopic procedure(s)
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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
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Seoul National university Hostpital
Seoul, Jongno-gu, 03080, South Korea
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can a blood test reveal why atrial fibrillation returns after cryoablation?