Could a smartphone alert replace daily blood thinners for AF?
NCT ID NCT06922695
First seen Aug 12, 2026 · Last updated Aug 13, 2026 · Updated 1 time
Summary
This study tests a new approach called 'pill-in-pocket' anticoagulation for people with atrial fibrillation (AF), a heart rhythm condition that raises stroke risk. Instead of taking blood thinners every day, participants would stop them after a 30-day AF-free period and only restart when an implanted heart monitor detects an AF episode and sends a smartphone alert. The goal is to see if this on-demand strategy can reduce bleeding risks while still preventing strokes, and whether it is safe and acceptable to patients.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Pill-in-pocket anticoagulation (taking blood thinners only when an atrial fibrillation episode is detected, instead of daily)
- What this could lead to
- If successful, this approach could allow some people with atrial fibrillation to take blood thinners only when needed, reducing bleeding risks and offering a new treatment option.
- What could go wrong
- This is a small pilot study, so results may not apply broadly. There is a risk that intermittent anticoagulation could increase stroke risk if episodes are missed or alerts are delayed.
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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Oxford University Hospitals NHS Trust, John Radcliffe Hospital
Oxford, Oxfordshire, OX3 9DU, United Kingdom
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Other studies related to the condition(s) this trial covers.
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