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Can weight and sleep apnea predict Post-Surgery oxygen problems?

NCT ID NCT07401589

Knowledge-focused Sponsor: Istinye 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This observational study will track 100 adults having laparoscopic gallbladder surgery to see how body mass index, sleep apnea risk, and pain relief methods relate to oxygen levels right after surgery. No extra treatments are given—just routine care. The goal is to better understand what raises the risk of low oxygen after surgery.

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 study could help doctors better predict and prevent low oxygen levels after surgery, improving patient safety.
What could go wrong
This is an early observational study with no intervention, so it cannot prove cause and effect. Results may not apply to other surgeries or patient groups.

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

About 100 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

Mar 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.

Who is studied

The study population consists of adult patients aged 18 years and older with ASA physical status I-III who undergo elective laparoscopic cholecystectomy in the reverse Trendelenburg position. All participants provide written informed consent. Patients with significant respiratory or cardiovascular comorbidities, emergency surgery, or perioperative respiratory complications are excluded.

Ages

18 years and older

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: * Age ≥ 18 years * Patients who provide written informed consent * ASA physical status I-III * Patients undergoing elective laparoscopic cholecystectomy * Surgery performed in the reverse Trendelenburg position (30°) * Expected operative duration \< 3 hours * Exclusion Criteria: * Age \< 18 years * Refusal or inability to provide informed consent * ASA physical status IV or higher * Known chronic respiratory diseases (e.g., asthma, COPD) * Severe cardiac failure (NYHA class III-IV) or advanced cardiovascular disease * Emergency surgery * Preoperative oxygen supplementation or baseline SpO₂ \< 90% * Prolonged intubation or perioperative respiratory complications * Requirement for postoperative noninvasive ventilation or intensive care unit admission * Missing SpO₂ or FiO₂ data preventing calculation of the SpO₂/FiO₂ ratio

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As listed by the trial registrant

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

Postoperative hypoxemia

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

  • Istinye Üniversity

    Istanbul, Merkez Mahallesi, 34250, Turkey (Türkiye)

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