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Handheld ultrasound could help paramedics spot severe strokes faster

NCT ID NCT05845203

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This pilot study tested whether a quick, 20-second ultrasound of the brain's blood vessels could help paramedics identify patients with a severe stroke caused by a large blocked artery. The study included 60 participants: healthy volunteers and suspected stroke patients. Researchers measured blood flow patterns to see if they could tell which patients might need to go directly to a hospital equipped for clot removal, rather than stopping at a local center first.

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 a fast, portable way for paramedics to identify stroke patients who need to go directly to a comprehensive stroke center, potentially saving time and improving outcomes.
What could go wrong
This is a very small pilot study (60 people) that only measured ultrasound readings, not patient outcomes. The technique may not be accurate enough in real-world emergency settings.

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

60 people

The number who actually took part.

Started

Oct 2023

Finished

Dec 2025

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

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: Healthy subjects (recruitment via the CIC-IC): * Adults (Age \>18), * free from any known cerebral pathology, * having given their informed, dated and signed free consent * and affiliated with a French social security scheme (CMU accepted) Stroke topics: * Adult patients (age \>18 years), * admission for suspected stroke with a severity scale assessed by an NIH Stroke Scale \> 10 with or without signs of cortical damage. * Onset of symptoms \< 24 hours. * Proximal arterial occlusion confirmed by angio-MRI or angio-scan, * free informed consent, dated and signed, * affiliated to a French social security scheme (CMU accepted). Exclusion Criteria: (healthy subjects and patients) * Realization of the transcranial Doppler likely to delay the treatment of the patient * Patient eligible for thrombectomy. vs * Major agitation (+3 on the Richmond Agitation Sedation Scale) (done only when the patient is agitated). * Inability of the patient to consent due to the severity of the clinical symptoms, and the absence of an available relative. * History of severe head trauma, or significant deformation of the skull. * Recent craniofacial trauma with recent scalp or facial wounds.

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Conditions

The condition(s) this trial relates to.

ischemic stroke

As listed by the trial registrant

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

Acute ischemic stroke

Contacts and locations

Locations

  • BOULOUIS

    Tours, 37000, France

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