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New oxygen sensor could prevent overdosing oxygen during surgery

NCT ID NCT07404267

Knowledge-focused Sponsor: Fatih Sultan Mehmet Training and Research Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study compares two ways of giving oxygen during surgery when patients are in the beach chair position (sitting up). One method uses standard pulse oximetry, the other adds a new monitor called the Oxygen Reserve Index (ORi). The goal is to see if ORi guidance reduces the chance of giving too much oxygen, which can be harmful. Eighty adults having elective orthopedic surgery will take part.

What this could mean

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

Active substance
Oxygen Reserve Index (ORi) monitoring
What this could lead to
If successful, this could lead to safer oxygen management during surgery, reducing risks from too much oxygen.
What could go wrong
This is a small, early-stage study with only 80 participants. The new monitoring method may not show clear benefits over standard care.

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 80 people

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

Expected to start

Feb 2026

An estimate. Start dates often move.

Expected to finish

Jul 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 65 years

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: * Adult patients aged 18 to 65 years * American Society of Anesthesiologists (ASA) physical status I-III * Scheduled for elective orthopedic surgery in the beach chair position * Body mass index (BMI) \<35 kg/m² * Ability to provide written informed consent Exclusion Criteria: * Age \<18 or ≥65 years * Finger deformities preventing the use of Oxygen Reserve Index (ORi) monitoring * Severe anemia (hemoglobin \<8 g/dL) * Pregnancy * Refusal or inability to provide informed consent * History of stroke or significant vascular pathology * Severe cardiac or respiratory disease

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Conditions

The condition(s) this trial relates to.

Hyperoxia

As listed by the trial registrant

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

Beach chair position Cerebral oxygenation Hyperoxemia Intraoperative oxygen therapy

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

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

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • Istanbul Provincial Health Directorate Fatih Sultan Mehmet Training and Research Hospital

    Istanbul, 34000, Turkey (Türkiye)

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