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Eye ultrasound tracks brain pressure during liposuction

NCT ID NCT06685952

Knowledge-focused Sponsor: The Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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)
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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
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Status unknown
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First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at whether ultrasound can measure changes in the optic nerve sheath (a part of the eye) to monitor brain pressure during liposuction. Fifty-five adults having liposuction under sedation took part. The goal was to see if lying face-down during surgery affects eye nerve size, which could signal changes in brain pressure.

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

55 people

The number who actually took part.

Started

Nov 2024

Finished

May 2025

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

Female patients who will undergo liposuction surgery under sedation and sedative anesthesia. Fat suction areas can be the abdomen, lower back, limbs and other parts.

Ages

18 to 50 years

Sex

Female participants only

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: * Patients aged 18-50 years, undergoing liposuction surgery. * American Society of Anesthesiologists (ASA) physical status Ⅰ and Ⅱ. * Voluntary participation and signed an informed consent form. Exclusion Criteria: * Uncontrolled hypertension, diabetes. * High nearsightedness or farsightedness, recent eye surgery, and other conditions in which ONSD cannot be measured. * Moderate to severe obstructive sleep apnea syndrome was present before surgery. * History of severe mental or neurological diseases, drug or psychotropic drug abuse. * Cognitive dysfunction or inability to communicate.

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As listed by the trial registrant

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

Optic nerve sheath diameter

Contacts and locations

Locations

  • Xu Wenli

    Beijing, Beijing Municipality, 100144, China

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