New surgical position may protect brain during laparoscopic surgery
NCT ID NCT07632287
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compared two different patient positions during laparoscopic gynecological surgery to see which one better protects brain oxygen levels and reduces eye nerve pressure. Researchers monitored 70 patients using non-invasive sensors to measure brain oxygenation and eye nerve diameter. The goal was to see if a modified position with bent legs is safer than the standard head-down tilt position.
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 safer surgical positioning that reduces brain pressure and improves patient outcomes during laparoscopic procedures.
- What could go wrong
- This is a small, completed study with only 70 participants, so results may not apply to all patients or surgeries. The modified position may not show significant benefits over the standard one.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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70 people
The number who actually took part.
- Started
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Mar 2026
- Finished
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May 2026
- Lead sponsor
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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.
Who is studied
The study population consists of adult patients up to 80 years of age who \[are admitted to the intensive care unit / are undergoing elective surgery / present to the emergency department\]. The population excludes patients with known increased intracranial pressure, severe cerebrovascular, cardiovascular, or pulmonary diseases, morbid obesity (BMI \> 35 kg/m\^2), pregnancy, and any pre-existing ocular pathologies that could affect optic nerve sheath diameter (ONSD)
- Ages
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18 to 80 years
- Sex
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Female participants only
- 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: Patients aged between 18 and 70 years American Society of Anesthesiologists (ASA) physical status I or II Scheduled for elective laparoscopic surgery requiring Trendelenburg position Provided written informed consent Exclusion Criteria: Patient refusal to participate History of severe cerebrovascular disease Known increased intracranial pressure Pre-existing ocular pathology that could affect optic nerve sheath diameter (ONSD) measurements (e.g., glaucoma, optic neuritis, ocular trauma) Severe cardiovascular or pulmonary disease Body Mass Index (BMI) greater than 35 kg/m\^2 Pregnancy
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Ankara Etlik City Hospital
Ankara, Ankara, 06010, Turkey (Türkiye)
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Other studies related to the condition(s) this trial covers.