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Simple head tilt during endoscopy may prevent dangerous oxygen drops

NCT ID NCT07673042

Disease control Sponsor: General Hospital of Ningxia Medical 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 This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This trial investigates whether tilting the head up 30 degrees during preoxygenation and the exam itself can lower the chance of low oxygen levels during painless gastrointestinal endoscopy. About 208 adults aged 18–75 with a BMI up to 35 will be randomly assigned to one of four position combinations. The main goal is to see which position best prevents oxygen levels from dropping below 90% for more than 10 seconds.

What this could mean

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

What this could lead to
If successful, this could lead to a simple, low-cost way to reduce dangerous drops in oxygen levels during painless endoscopy.
What could go wrong
This is a single-center trial with 208 participants, so results may not apply to all patients or settings. The intervention is a positioning change, not a drug, so the potential impact is 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

About 208 people

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

Expected to start

Jun 2026

An estimate. Start dates often move.

Expected to finish

Aug 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.

Ages

18 to 75 years

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: * Aged 18 to 75 years, regardless of gender * Body mass index (BMI): 18.5 - 35 kg/m² * ASA physical status class I, II or III * Scheduled for painless gastroscopy, painless colonoscopy, or combined painless gastroenteroscopy * Able to understand the study procedure and provide written informed consent Exclusion Criteria: * Severe cardiopulmonary diseases, including severe COPD, heart failure, severe arrhythmia and pulmonary hypertension * Difficult airway identified before anesthesia * Severe obstructive sleep apnea (OSA) * Spinal or thoracic deformity * Preoperative baseline hypoxemia * Known allergy to any anesthetic drugs used in this study * Pregnant females * Unable to cooperate with required intraoperative body position

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As listed by the trial registrant

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

Hypoxemia during surgery

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

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    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • General hospital of Ningxia medical university

    Yinchuan, Ningxia, 750001, China

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