New oxygen method may prevent dangerous drops during routine scopes for sleep apnea patients
NCT ID NCT07307560
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether a high-flow nasal cannula (a device that delivers warm, moist oxygen) can prevent low oxygen levels during sedated gastrointestinal endoscopy in people at high risk for obstructive sleep apnea. About 600 adults with a STOP-Bang score of 5 or higher will be randomly assigned to receive either the high-flow nasal cannula or standard oxygen during their procedure. The goal is to see if this approach reduces the chance of hypoxia, a common complication during sedation.
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Study facts
What this study's own registry entry says, in plain language.
- Phase
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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
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About 600 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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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.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
3 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Quzhou People's Hospital
RECRUITINGQuzhou, Zhejiang, 324000, China
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The First Affiliated Hospital, Zhejiang University School of Medicine
RECRUITINGHangzhou, Zhejiang, 310000, China
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The First Hospital Of Jiaxing
RECRUITINGJiaxing, Zhejiang, 314000, China
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