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New doppler device could help paramedics see blood flow during CPR

NCT ID NCT06599073

Knowledge-focused Sponsor: Norwegian University of Science and Technology 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Updated 1 time

Summary

This study tested a new hands-free device called RescueDoppler that uses ultrasound to monitor blood flow in the carotid artery during cardiac arrest. Researchers attached the device to 285 patients experiencing sudden cardiac arrest, both in and out of the hospital. The goal was to see if the device could reliably detect whether blood flow was present or absent during CPR, which could help guide resuscitation efforts.

What this could mean

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

Active substance
RescueDoppler device
What this could lead to
If successful, this device could help emergency responders quickly assess blood flow during CPR, potentially improving resuscitation outcomes.
What could go wrong
This is a feasibility study, not a treatment trial. The device's impact on survival or patient outcomes has not been tested, and results may not change current practice.

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

285 people

The number who actually took part.

Started

Sep 2024

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

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: Male or female, aged 18 years or older. Subjects experiencing a sudden cardiac arrest, either pre-hospital or in-hospital. Sudden cardiac arrest is defined as the abrupt loss of heart function, breathing, and consciousness. Exclusion Criteria: Subjects where resuscitation is not continued after the initial application of RescueDoppler or resuscitation efforts are halted due to a do-not-resuscitate order. Subjects deemed unable to comply with the study requirements as determined by the Investigator. Subjects with extensive trauma injuries that prevent proper attachment of the RescueDoppler patch.

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Conditions

The condition(s) this trial relates to.

cardiac arrest

As listed by the trial registrant

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

Cardiac arrest (CA) Cardiopulmonary resuscitation Doppler ultrasound

Contacts and locations

Locations

  • Akershus university hospital

    Loerenskog, Akershus, 1478, Norway

  • Haukeland University Hospital, Surgical Services Clinic, Department of Emergency Medicine

    Bergen, Vestland, 5201, Norway

  • Nordland Hospital

    Bodø, Norway

  • Oslo University Hospital Rikshospitalet

    Oslo, Norway

  • Oslo University Hospital Ullevaal

    Oslo, Norway

  • Oslo University Hospital Ullevål location Lørenskog

    Oslo, 1474, Norway

  • Sahlgrenska University Hospital

    Gothenburg, 41345, Sweden

  • St Olavs University Hospital

    Trondheim, 7491, Norway

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