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Can ultrasound better spot returning leg clots? new study aims to find out

NCT ID NCT05300139

Diagnosis Sponsor: Centre Hospitalier Intercommunal de Toulon La Seyne sur Mer 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jul 08, 2026 · Updated 3 times

Summary

This study looks at whether ultrasound can correctly diagnose a repeat deep vein thrombosis (DVT) in the same leg. Researchers will check if the clot changes after 3 months of blood thinner treatment. The goal is to reduce false alarms and unnecessary treatment. The study involves 18 adults with a history of DVT.

What this could mean

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

Active substance
Color Doppler Ultrasound
What this could lead to
If successful, this could improve accuracy of ultrasound for diagnosing DVT recurrence, reducing false positives and unnecessary treatment.
What could go wrong
This is a small, early study with only 18 participants and no comparison standard, so results may not be reliable or widely applicable.

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

18 people

The number who actually took part.

Started

Nov 2021

Finished

Jan 2023

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

Patients included in the ULTREC study who had a recurrence of deep vein thrombosis

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: 1. Age ≥ 18 years 2. Known history of objectively documented deep vein thrombosis of the lower limb (with or without pulmonary embolism) 3. Out-patients referred for clinically suspected acute recurrent ipsilateral DVT of the lower limb 4. Patients covered by social security or an equivalent regimen 5. No objection to the use of the data 6. Inclusion in the ULTREC study Exclusion Criteria: 1. Known current pregnancy 2. Any condition, which may prevent from performing the colour doppler ultrasound test 3. Delay from onset of symptoms to inclusion of more than 10 days 4. Therapeutic anticoagulation for more than 48 hours in the two days prior to consent to ULTREC Study 5. Presence of clinical symptoms or signs of pulmonary embolism 6. Life expectancy less than 3 months 7. Patient unable to adhere to ULTREC protocol follow-up 8. Participants under judicial protection or incapacity

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Conditions

The condition(s) this trial relates to.

Recurrence venous thromboembolism Venous Thrombosis

As listed by the trial registrant

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

Deep vein thrombosis

Contacts and locations

Locations

  • Cabinet d'angiologie Bensedrine

    Six-Fours-les-Plages, Var, 83140, France

  • Cabinet d'angiologie Bonavita

    Bastia, Haute-Corse, 20200, France

  • Cabinet d'angiologie Cazanave

    Carcassonne, Aude, 11000, France

  • Cabinet d'angiologie Cazaux

    Auch, Gers, 32000, France

  • Cabinet d'angiologie De Mari

    Ajaccio, Corse-du-Sud, 20090, France

  • Cabinet d'angiologie Dias

    Martigues, Bouches Du Rhône, 13500, France

  • Cabinet d'angiologie Secondi

    Ajaccio, Corse-du-Sud, 20090, France

  • Centre Hospitalier Intercommunal Toulon La Seyne sur Mer

    Toulon, Var, 83056, France

  • Centre Hospitalier d'Auch

    Auch, Gers, 32000, France

  • Centre Hospitalier de Carcassonne

    Carcassonne, Aude, 11000, France

  • Clinique Rive Gauche

    Toulouse, Haute-Garonne, 31076, France

  • Clinique des fleurs

    Ollioules, Var, 83140, France

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