New oxygen sensor could prevent dangerous drops during surgery
NCT ID NCT07415161
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study tests whether a new monitoring tool called Oxygen Reserve Index (ORi) can detect low oxygen levels earlier than the standard method during throat surgery. Eighty adults having elective endolaryngeal surgery will be randomly assigned to ORi or standard monitoring. The goal is to see if ORi gives doctors more time to respond before oxygen drops to unsafe levels.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- oxygen monitoring techniques
- What this could lead to
- If successful, this could lead to a safer way to monitor oxygen levels during surgeries where the airway is shared, reducing the risk of dangerously low oxygen.
- What could go wrong
- This is a small, early-stage study with only 80 participants, so results may not apply to all patients or surgeries. The new monitoring method may not provide a meaningful advantage over current practice.
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
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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 80 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jan 2026
An estimate. Start dates often move.
- Expected to finish
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Mar 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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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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 or older * Scheduled for elective endolaryngeal surgery * Planned general anesthesia with apneic intermittent ventilation * American Society of Anesthesiologists (ASA) physical status I-III * Ability to provide written informed consent Exclusion Criteria: * Age under 18 years * Preoperative chronic hypoxemia (baseline SpO₂ \< 95%) * Patients transferred from the intensive care unit * ASA physical status IV or higher * Refusal or inability to provide informed consent
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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
1 site. 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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Istanbul University, Department of anesthesiology
Istanbul, Fatih, 34093, Turkey (Türkiye)
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