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Simple position change may protect brain during Weight-Loss surgery

NCT ID NCT07639502

Knowledge-focused Sponsor: Bagcilar Training and Research Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jul 15, 2026 · Updated 2 times

Summary

This study looked at whether placing patients in a specific position (head up, feet down) before starting laparoscopic weight-loss surgery could reduce pressure on the brain. Researchers measured the optic nerve sheath diameter, an indicator of brain pressure, in 90 patients. The goal was to see if this simple positioning step could prevent dangerous increases in pressure during 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 could lead to a simple positioning technique to reduce brain pressure during laparoscopic surgery, potentially improving safety.
What could go wrong
This is a small, completed study focused on a measurement (optic nerve sheath diameter) rather than direct patient outcomes. The results may not change clinical practice or 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.

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

90 people

The number who actually took part.

Started

Jan 2026

Finished

Jun 2026

Lead sponsor

A government agency

The lead sponsor is a government body.

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: * Age between 18 and 65 years. * American Society of Anesthesiologists (ASA) physical status I-III. * Body mass index (BMI) ≥ 40 kg/m² and scheduled for elective laparoscopic bariatric surgery. * Ability to provide written informed consent. * Willingness to participate in the study and comply with study procedures. Exclusion Criteria: * Age younger than 18 years or older than 65 years. * Refusal or inability to provide written informed consent. * History of ophthalmologic disease that may affect optic nerve sheath diameter (ONSD) measurements (e.g., glaucoma, optic neuritis, optic nerve tumors, severe ocular trauma, previous ocular surgery). * Known intracranial pathology, including intracranial hypertension, hydrocephalus, intracranial mass lesions, or cerebrovascular disease. * Neurological disorders that may influence intracranial pressure measurements. * Emergency surgery. * Pregnancy. * Severe cardiopulmonary disease (e.g., decompensated heart failure, severe pulmonary hypertension, severe chronic obstructive pulmonary disease). * Inability to obtain adequate ocular ultrasonography images for ONSD measurement. * Conversion from laparoscopic to open surgery. Intraoperative events requiring deviation from the study protocol.

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Conditions

The condition(s) this trial relates to.

morbid obesity

As listed by the trial registrant

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

Morbid obesity

Contacts and locations

Locations

  • Bagcılar Training Research Hospital

    Istanbul, Turkey (Türkiye)

More trials for these conditions

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