The Application of Ultrasonic Measurement of Optic Nerve Sheath Diameter in Liposuction Surgery (NCT06685952) | Clinical Trial Compass
CompletedNot Applicable
The Application of Ultrasonic Measurement of Optic Nerve Sheath Diameter in Liposuction Surgery
China55 participantsStarted 2024-11-19
Plain-language summary
The main purpose of this study is to investigate the effect of changes in Optic Nerve Sheath Diameter (ONSD) measured at different operating position during Liposuction Surgery.
Optic nerve sheath diameter (ONSD) has been shown to be a noninvasive indicator for monitoring intracranial pressure changes.
The use of anesthetic drugs will reduce the intracranial pressure. However, prone position and large fluid infusion can still lead to increased intracranial pressure.
The investigators hypothesized that during sedation and analgesia anesthesia, patients in prone position had higher ONSD.
Who can participate
Age range
18 Years – 50 Years
Sex
FEMALE
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
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.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Optic nerve sheath diameter
Timeframe: Enter the operating room, 30min and 60min after sedative AND analgesic anaesthesia, end of surgery
Trial details
NCT IDNCT06685952
SponsorThe Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College