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Study reveals how extra weight changes anesthesia effects

NCT ID NCT07530848

Knowledge-focused Sponsor: Second Affiliated Hospital of Wenzhou Medical 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study watches how body fat and muscle affect the way anesthetic drugs work in overweight and obese patients. Researchers will measure body composition and drug levels in 2,100 adults during surgery. The goal is to understand why heavier patients may have more complications, not to test a new treatment.

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 2,100 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Apr 2026

An estimate. Start dates often move.

Expected to finish

Apr 2028

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

Eligible participants were adults aged 18 to 65 years with an ASA physical status of I-III and a body mass index (BMI) greater than 24 kg/m², who were scheduled to undergo surgery under general anesthesia.

Ages

18 to 65 years

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: 1. Aged 18-65 years with ASA physical status I-III 2. Participants were divided into a normal control group (18.5 \< BMI \< 23.9 kg/m²) and an experimental group (BMI \> 24 kg/m²) 3. Voluntary participation with written informed consent approved by the Ethics Committee 4. No cognitive or verbal communication impairments, with the ability to fully cooperate with the study procedures Exclusion Criteria: * 1: Severe organ dysfunction, including severe hepatic or renal insufficiency, unstable coronary syndrome, uncontrolled hypertension, and other severe cardiovascular diseases 2: History of chronic pain or long-term use of opioids/sedatives; preoperative use of potent CYP3A inhibitors or inducers 3: Contraindications to body composition measurement via Bioelectrical Impedance Analysis (BIA), including abdominal wall stoma, massive ascites, limb amputation/absence, and presence of cardiac pacemakers or implantable cardioverter-defibrillators (ICDs) 4: Women who were pregnant or breastfeeding were excluded from the study 5: Known hypersensitivity or allergy to study medications 6: Any other condition deemed by the investigator to make the patient unsuitable for participation, including but not limited to severe psychiatric disorders or legal restrictions

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Conditions

The condition(s) this trial relates to.

Obesity obesity disorder Overweight

As listed by the trial registrant

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

Obesity Overweight

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

  • The Second Affiliated Hospital and Yuying Children's Hospital Affiliated to Wenzhou Medical University第二附属医院和温州医科大学附属的玉英儿童医院

    Wenzhou, Zhejiang, 325802, China

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