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Massive chinese trial tests simple steps to prevent deadly clots in hospitals

NCT ID NCT04211181

Knowledge-focused Sponsor: China-Japan Friendship Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study tests whether a set of quality improvement tools—including guidelines, care protocols, and a mobile app—can help hospitals in China better prevent blood clots in patients. About 5,800 hospitalized adults will take part across multiple hospitals. The goal is to see if the program increases the number of at-risk patients who receive proper prevention and reduces clot-related complications within 90 days.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
quality improvement program (guidelines, protocols, mobile app)
What this could lead to
If successful, this could provide a practical way for hospitals to better prevent dangerous blood clots in patients, reducing deaths and complications.
What could go wrong
This is a large but early-stage implementation study, not testing a new drug. Results may vary by hospital and may not apply outside China.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 5,800 people

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

Started

Aug 2025

Expected to finish

Dec 2026

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.

Ages

14 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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. Aged ≥14 years 2. Have an expected hospital stay ≥72 hours for medical and/or surgical treatment 3. Written informed consent Exclusion Criteria: 1. Inability to be followed-up at until 3 months after randomization 2. Have participated in similar trials or are undergoing other clinical trials 3. Refuse or are unable to give informed consent 4. VTE identified on CTPA or lower extremity vein ultrasound at or any time before enrollment 5. Requiring a full dose of anticoagulant treatment (e.g., recent VTE, atrial fibrillation).

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Conditions

The condition(s) this trial relates to.

pulmonary embolism venous thromboembolism Venous Thrombosis

As listed by the trial registrant

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

Deep venous thrombosis Pulmonary embolism Quality improvement Venous thromboembolic disease Venous thromboembolism

How to take part

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

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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.

Contacts and locations

Locations

  • China-Japan Friendship Hospital

    RECRUITING

    Beijing, Beijing Municipality, 100029, China

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