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New tool could cut risky, costly lung clot scans in ERs

NCT ID NCT06320236

Diagnosis Sponsor: Dr. Kerstin de Wit 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests a new bedside tool called Adjust-Unlikely to safely reduce unnecessary imaging for pulmonary embolism (a blood clot in the lungs) in emergency patients. Researchers will enroll 4,000 adults in Canada to see if the tool accurately identifies who does not need a scan. The goal is to avoid radiation, cost, and false positives while still catching dangerous clots.

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 4,000 people

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

Started

Jan 2024

Expected to finish

Sep 2027

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

Emergency department patient who is tested by an emergency physician for PE.

Ages

18 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: * Emergency department patient who is tested by an emergency physician for PE Exclusion Criteria: * Patient is \< 18 years of age * No documentation of whether PE is the most likely diagnosis * D-dimer is not tested or else not resulted during the emergency visit * The D-dimer level is known before documentation of whether PE is the most likely diagnosis * The D-dimer is ordered prior to the physician assessing the patient * The patient has previously registered that they opt out of all research at the participating site * The patient leaves against medical advice * The patient has had PE or deep vein thrombosis imaging (CT pulmonary angiogram, ventilation-perfusion scan or lower limb ultrasound) within prior 30 days * There is a new (non-PE) indication for anticoagulation * The patient was initiated on treatment for presumed PE prior to PE testing * The patient has previously been enrolled into the study * The patient has a prior history of lower extremity deep vein thrombosis without availability of a baseline ultrasound scan * The patient was transferred from another hospital organization * The patient does not reside in Ontario * The patient has no valid Ontario Health Insurance Plan card

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Conditions

The condition(s) this trial relates to.

disease pulmonary embolism

As listed by the trial registrant

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

D-dimer Diagnosis Pulmonary embolism

How to take part

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

  1. The places running it

    2 sites. 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

  • Hamilton Health Sciences Corporation

    RECRUITING

    Hamilton, Ontario, L8L 2X2, Canada

  • Kingston Health Sciences Centre

    RECRUITING

    Kingston, Ontario, K7L 2V7, Canada

  • London Health Sciences Centre Research Inc

    ACTIVE_NOT_RECRUITING

    London, Ontario, Canada

  • Ottawa Hospital Research Institute

    ACTIVE_NOT_RECRUITING

    Ottawa, Ontario, K1Y 4E9, Canada

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