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New study aims to perfect tourniquet placement for emergency bleeding control

NCT ID NCT06725602

Knowledge-focused Sponsor: University of Sao Paulo 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study compares how well different tourniquet models block blood flow when placed on the arm, forearm, leg, and thigh. Forty healthy volunteers will each receive eight tourniquet applications over three days. The goal is to see if placement location affects how quickly and completely blood flow stops, which could improve emergency bleeding control guidelines.

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 refine tourniquet application guidelines for emergency responders, potentially saving more lives from severe bleeding.
What could go wrong
This is a small, early-stage study with 40 healthy volunteers, not patients. Results may not apply to real injury scenarios or different body types.

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 40 people

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

Started

Dec 2024

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

18 to 60 years

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: * have all four limbs (both upper and lower limbs) * Body Mass Index (BMI) ≥18.5 and ≤30 kg/m² (considering the normal and overweight range, excluding underweight and obesity ranges) Exclusion Criteria: * Diabetes Mellitus (DM) * Systemic Arterial Hypertension * Buerger's Disease * Vascular and metabolic dysfunctions affecting the limbs including lymphedema * history of neoplasms * history of cardiac surgeries * history of renal failure * recent open or closed injuries in the limbs * any other condition suggestive of systemic or localized vascular dysfunction in the limbs.

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Conditions

The condition(s) this trial relates to.

Emergencies Hemorrhage injury Shock

As listed by the trial registrant

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

Hemorrhage Hypovolemic shock Tourniquets

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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

  • Ribeirão Preto Medical School USP (FMRP-USP), Experimental Surgery Department

    Ribeirão Preto, São Paulo, 14040900, Brazil

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