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10,000 AF patients tracked to find stroke threshold

NCT ID NCT07497906

Knowledge-focused Sponsor: Navy General Hospital, Beijing Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This observational study will follow 10,000 people with atrial fibrillation for 24 months. Researchers will use smartwatch data to measure how much time the heart is in AF (AF burden) and see if that predicts strokes or blood clots. The goal is to find a clear threshold where blood thinners become beneficial. No new treatments are being tested; it is purely data collection.

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 help doctors better decide when to use blood thinners in atrial fibrillation patients, potentially preventing strokes.
What could go wrong
This is an observational study, not a treatment trial. It can only show links, not prove cause and effect. Results may not change practice directly.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 10,000 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Apr 2029

An estimate. End dates often move.

Lead sponsor

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

This was a prospective, multicenter, observational cohort study of adult patients with a confirmed diagnosis of atrial fibrillation. Patients meeting the inclusion and exclusion criteria were planned to be consecutively recruited through the Cardiovascular Research Platform, with an expected total sample size of 10,000 patients and an estimated screening pool of approximately 670,000 patients. The patients were enrolled from 55 research centers across the country, covering multiple geographic regions. All enrolled patients will undergo a 24-month follow-up period, with follow-up visits scheduled at 3, 6, 12, and 24 months after enrollment. No additional interventions were applied in this study; patient management was based on local clinical practice. The primary exposure variable was the five-dimensional atrial fibrillation burden indicator, and the primary outcome was the first occurrence of ischemic stroke or systemic embolism within 12 months.

Ages

18 years and older

Sex

Anyone

Show 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: * (1) age ≥ 18 years; (2) confirmed diagnosis of atrial fibrillation (paroxysmal, persistent, or permanent); (3) ownership of a smartphone and a smartwatch, with the ability to perform basic operations; (4) provision of electronic informed consent. Exclusion Criteria: * (1) presence of clear indications for anticoagulation therapy (e.g., mechanical heart valve, recent venous thromboembolism); (2) life expectancy \< 1 year; (3) severe cognitive impairment or psychiatric disorder; (4) known allergy to materials used in wearable devices; (5) concurrent participation in another clinical trial that may interfere with the outcomes of this study; (6) presence of an implanted pacemaker, implantable cardioverter-defibrillator, or cardiac resynchronization therapy device; (7) pregnancy, lactation, or planned pregnancy during the study period.

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Conditions

The condition(s) this trial relates to.

atrial fibrillation

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Atrial fibrillation (AF) Atrial fibrillation burden

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. 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.

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