Plain-English translation of NCT05565781 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
After a stroke with no obvious cause, doctors sometimes discover that an irregular heart rhythm called atrial fibrillation was responsible. This study is testing whether a smartwatch that records your heart's electrical activity for a full year can find these hidden rhythms more reliably than the standard 30-day heart monitor. Some participants will also wear an advanced implanted heart monitor to compare how well the smartwatch works.
Many stroke patients never learn why their stroke happened, even after standard testing. If hidden heart rhythm problems go undetected, patients may not get the right treatment to prevent another stroke. This research aims to find out whether longer, continuous monitoring with a smartwatch can catch these dangerous rhythms earlier so doctors can better protect patients.
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If you join this study, you will be assigned to wear either a smartwatch that records your heart rhythm, a standard external heart monitor for 30 days plus periodic checks, or standard monitoring for 30 days only. You'll wear your assigned device(s) and visit the research team regularly for one year to check how well the monitoring is working and to watch for any new health events. The researchers will track whether any heart rhythm problems are found and whether you have any future strokes or other heart-related problems.
AI-generated summary from trial data · Jun 11, 2026 · Not medical advice
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