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New oxygen sensor could give earlier warning for elderly and obese patients under anesthesia

NCT ID NCT07679724

Knowledge-focused Sponsor: Ankara City Hospital Bilkent 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 01, 2026 · Last updated Jul 02, 2026 · Updated 1 time

Summary

This study tests whether a device called the oxygen reserve index (ORi) can warn doctors earlier than standard pulse oximetry when an older patient's oxygen level starts to drop during surgery. Researchers are comparing obese and non-obese patients aged 65 and older to see if ORi provides extra warning time. The goal is to improve safety by giving anesthesiologists more time to respond before oxygen reaches dangerously low 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 reserve index (ORi) monitoring device
What this could lead to
If ORi provides earlier warnings, it could help anesthesiologists prevent dangerous oxygen drops in elderly and obese patients during surgery.
What could go wrong
This is a small observational study, not a treatment trial. The device may not improve outcomes in real-world settings, and results may not apply to all patients.

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.

Participants

90 people

The number who actually took part.

Started

Nov 2023

Finished

Jul 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.

Who is studied

90 patients aged 65 and over, ASA II-III

Ages

65 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 of both sexes aged 65 years and older with ASA II-III risk scores who are scheduled to undergo elective surgical procedures with endotracheal intubation under general anesthesia. Exclusion Criteria: * Patients under 65 years of age * Patients with heart and lung disease * Patients in situations where the patient is unable to cooperate (e.g., dementia, Alzheimer's) * Patients suspected of having airway difficulties

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Elderly (people aged 65 or more) Obesity & overweight Oxygen reserve index

Contacts and locations

Locations

  • Ankara Bilkent City Hospital

    Ankara, Turkey (Türkiye)

More trials for these conditions

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