Can smartphones and wearables unlock the secrets of atrial fibrillation?
NCT ID NCT04404465
First seen Jul 15, 2026 · Last updated Jul 16, 2026 · Updated 1 time
Summary
This study aims to better understand atrial fibrillation (AFib), the most common abnormal heart rhythm. Researchers will use mobile devices like ECG patches and a smartphone app to monitor heart rhythm, activity, and sleep in 3,000 adults, some with AFib and some without. Participants will also provide blood and saliva samples and undergo annual heart imaging for three years. The goal is to find markers that can predict who will develop AFib, whose condition will worsen, or who will respond best to treatment.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If successful, this could lead to better ways to predict who is at risk for atrial fibrillation and who will respond best to treatment.
- What could go wrong
- This is an observational study, not a treatment trial, so it will not directly test any new therapy. The findings may not lead to immediate clinical changes.
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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
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Locations
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University of California, San Francisco
San Francisco, California, 94143, United States
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