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Can a nasal oxygen device prevent low oxygen during endoscopy in sleep apnea patients?

NCT ID NCT07155330

Symptom relief Sponsor: Zhejiang University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 a high-flow nasal cannula (HFNC) can reduce the risk of low oxygen levels during sedated gastrointestinal endoscopy in 80 adults with high-risk obstructive sleep apnea. Participants had a STOP-Bang score of 5 or higher and were undergoing gastroscopy, colonoscopy, or both. The goal was to see if HFNC prevents hypoxia, a common complication during sedation.

What this could mean

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

Active substance
high-flow nasal cannula (device)
What this could lead to
If it works, this could provide a simple way to prevent dangerous drops in oxygen during routine endoscopy for people with severe sleep apnea.
What could go wrong
This is a small, completed study with only 80 participants, so results may not apply to everyone. The device may not reduce hypoxia risk as hoped.

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

80 people

The number who actually took part.

Started

Sep 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: * Age ≥18 years. * STOP-Bang score ≥5. * Scheduled for sedated gastrointestinal endoscopy (gastroscopy, colonoscopy, or combined gastroscopy + colonoscopy). * The estimated duration of the procedure does not exceed 45 minutes. * Patients have signed the informed consent form. Exclusion Criteria: * Coagulation disorders or bleeding tendency (e.g., oral/nasal bleeding risk, mucosal injury, space-occupying obstructions). * Active upper respiratory tract infection (oral, nasal, or pharyngeal), or fever (core temperature \>37.5°C). * Chronic obstructive pulmonary disease or other acute/chronic pulmonary diseases requiring long-term or intermittent oxygen therapy, or preoperative SpO₂ ≤ 92% on room air. * Severe organ dysfunction, including: Cardiac insufficiency (\<4 METs), Severe renal insufficiency (requiring dialysis), Diagnosed severe hepatic insufficiency, Increased intracranial pressure, ASA physical status ≥ IV. * Confirmed pregnancy or current breastfeeding. * Known allergy to sedatives (e.g., propofol) or medical adhesives. * Multiple traumatic injuries. * Current participation in another clinical trial. * Other conditions deemed unsuitable by the investigator.

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Conditions

The condition(s) this trial relates to.

colon carcinoma colonic neoplasm disease esophageal cancer Esophageal Neoplasms gastric cancer gastric neoplasm Hypoxia obstructive sleep apnea syndrome

As listed by the trial registrant

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

Colon cancer Esophageal cancer Gastric cancer (diagnosis) Hypoxemia

Contacts and locations

Locations

  • The First Affiliated Hospital, Zhejiang University School of Medicine

    Hangzhou, Zhejiang, 310000, China

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