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Study tests best head position for emergency neck procedure in obese patients

NCT ID NCT05043025

Knowledge-focused Sponsor: SMG-SNU Boramae Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether different head positions help doctors locate the cricothyroid membrane more accurately in obese patients. The cricothyroid membrane is the target for an emergency breathing tube when a patient cannot be intubated or oxygenated. Researchers compared neck extension with a modified ramped position in 116 participants and used ultrasound to check accuracy.

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 help doctors perform emergency airway procedures more quickly and accurately in obese patients.
What could go wrong
This is a small, completed study that only measures positioning accuracy, not actual patient outcomes. Results may not apply to all 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

116 people

The number who actually took part.

Started

Jul 2022

Finished

Dec 2024

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

19 years and older

Sex

Female participants only

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: * body mass index \>30 kg/m2 Exclusion Criteria: * anatomical abnormalities or pathologies of the neck * a history of neck surgery * cervical spine disorders * skin lesions on the neck

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As listed by the trial registrant

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

Cricothyroid membrane

Contacts and locations

Locations

  • SMG-SNU Boramae Medical Center

    Seoul, Select State/Province, 07061, South Korea