Do antiplatelet drugs work the same in patients over 80? a study puts it to the test.
NCT ID NCT07724301
First seen Jul 24, 2026 · Last updated Jul 24, 2026
Summary
This observational study examines how antiplatelet medications affect platelet function in people over 80 with atrial fibrillation who have received a Watchman implant. Researchers will measure various markers of platelet reactivity before and after treatment to see if clotting risk is adequately controlled in this older population.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Aug 2026
An estimate. Start dates often move.
- Expected to finish
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Aug 2028
An estimate. End dates often move.
- 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.
Who is studied
The study population consists of patients over the age of 80 who have been diagnosed with atrial fibrillation and will receive the Watchman Procedure and receive antiplatelet drugs following procedure.
- Ages
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80 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * diagnosed with atrial fibrillation, scheduled for a Watchman Procedure Exclusion Criteria: * Healthy, taking antiplatelet medication
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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.
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?