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A simple switch in oxygen delivery may prevent dangerous drops in oxygen during routine procedures

NCT ID NCT06139081

Disease control Sponsor: Nanjing First Hospital, Nanjing Medical 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 27, 2026 · Last updated Jul 28, 2026 · Updated 1 time

Summary

This trial tests whether changing how oxygen is delivered during painless gastroscopy can reduce the risk of hypoxemia (low blood oxygen). Patients at high risk for hypoxia—such as those with heart or lung disease, older age, obesity, or sleep apnea—will receive oxygen through the mouth instead of the nose after the endoscope is inserted. The goal is to see if this simple adjustment lowers the rate of oxygen drops during the procedure.

What this could mean

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

Active substance
oxygen delivery through the mouth via nasal catheter
What this could lead to
If effective, this simple change in oxygen delivery could help prevent dangerous drops in oxygen levels during routine procedures.
What could go wrong
This is a single-center trial, and the benefit may not apply to all patients or settings. The intervention is a minor procedural change, so the impact may be modest.

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

648 people

The number who actually took part.

Started

Dec 2023

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

18 years and older

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: Patients who receiving gastroscopy under general anesthesia, accompanied with one of the following risk factors of hypoxia: 1. Patients combined with heart or respiratory diseases 2. Age older than 60 3. ASA grading II-III 4. BMI≥30kg/m², 5. Snoring or having sleep apnea syndrome 6. Patients with a STOP-Bang score ≥ 3 (the risk of OSAS is high) are considered to be highly risk of hypoxia. Exclusion Criteria: 1. Severe cardiovascular, pulmonary, liver, or kidney disease 2. Patients with infections or tumors of airway 3. History of difficult intubation under general anesthesia 4. Severe sleep apnea syndrome \[hypopnea/apnea hypopnea index (AHI)\>40\] 5. Patients allergic to propofol, eggs, soy or egg whites 6. Pregnancy

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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.

Hypoxemia

Contacts and locations

Locations

  • Nanjing First Hospital

    Nanjing, Jiangsu, 210006, China

More trials for these conditions

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