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Could a simple measurement predict a tough intubation?

NCT ID NCT07461792

Knowledge-focused Sponsor: Sohag University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at a new way to predict if placing a breathing tube will be difficult. It combines a person's height and jaw measurement with signs of airway blockage and neck movement. Researchers will test this on 350 adults having surgery to see if it works better than current methods.

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

About 350 people

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

Started

Jan 2026

Expected to finish

Jul 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.

Who is studied

The sample size calculation was performed using G. power 3.1.9.2 (Universitat Kiel, Germany) and total sample size will be 350. It was calculated according to a previous study (Pal et al., 2025, Rista et al., 2025) based the sensitivity of Height/Thyromental Distance Ratio and L.E.M.O.N score as to best of our knowledge our study will be the first to assess Height/Thyromental Distance Ratio Combined with Obstruction and Neck Mobility (HON Model) to predict difficult intubation (Power : 0.8, α error: 0.05).

Ages

15 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: * Adult patients from 15- 60 yrs old * Patients who require endotracheal intubation for surgery under general anesthesia. * Patients with ASA I - II * Patients who provide informed consent Exclusion Criteria: * Patients with history of previous difficult intubation. * Patients with inability to sit/stand, heamodinamiclly unstable and need for rapid sequence induction .

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As listed by the trial registrant

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

Difficult airway intubation

Contacts and locations

Locations

  • Faculty of Medicine Sohag University

    Sohag, Nasser City, Egypt

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