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Nasal mask may beat cannula for oxygen during gut scopes

NCT ID NCT07500779

Symptom relief Sponsor: Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested whether a nasal mask or a standard nasal cannula is better at preventing low oxygen levels during gastrointestinal endoscopy. 600 adults were randomly assigned to receive oxygen through one of the two devices while sedated with propofol. The goal was to see which method reduces hypoxemia (oxygen saturation dropping to 90% or below).

What this could mean

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

Active substance
oxygen
What this could lead to
If the nasal mask works better, it could become a standard way to prevent low oxygen levels during endoscopy procedures.
What could go wrong
This is a completed trial, but results may not apply to all patients or settings. The difference between devices might be small.

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

600 people

The number who actually took part.

Started

Jan 2025

Finished

Nov 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: * Adults aged 18 years or older. Scheduled for gastrointestinal endoscopic procedures (upper endoscopy and or colonoscopy) under propofol sedation using target controlled infusion with SedLine monitoring. American Society of Anesthesiologists (ASA) physical status I to III. Provided written informed consent. Exclusion Criteria: * Refusal or inability to provide informed consent. Known allergy or contraindication to propofol or study related materials. Severe cardiorespiratory instability or conditions judged by the investigator to increase procedural risk. Pregnancy. Requirement for tracheal intubation or general anesthesia at the outset of the procedure. Significant anatomic or clinical factors precluding use of the assigned oxygen delivery device.

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Conditions

The condition(s) this trial relates to.

Hypoxia

As listed by the trial registrant

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

Conscious sedation Hypoxemia

Contacts and locations

Locations

  • University of Health Sciences Sultan Abdulhamid Han Training and Research Hospital

    Istanbul, Turkey (Türkiye)

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Other studies related to the condition(s) this trial covers.