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Brain wave monitor may slash opioid use in surgery

NCT ID NCT07004686

Symptom relief Sponsor: Peking University Shenzhen Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether a special brain monitor (MGRNOX) can help doctors give less opioid pain medicine during gallbladder surgery. About 112 adults having laparoscopic cholecystectomy will be randomly assigned to standard care or MGRNOX-guided care. The goal is to see if the monitor reduces opioid use while still controlling pain.

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

About 112 people

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

Started

Jun 2025

Expected to finish

May 2026

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.

Ages

18 to 64 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: * Age ≥18 years old and \< 65 years old； * American Society of Anesthesiologists (ASA) class I-II； * Scheduled to undergo elective laparoscopic cholecystectomy undergeneral anesthesia （without epidural anesthesia, local blocks, or infiltration） Exclusion Criteria: * Pregnancy or lactation period； * BMI ≥35 kg/m² or \<18.5 kg/m²； * Anticipated difficult airway； * Previous diagnosis of hypertension； * History of drug or alcohol abuse within the past 6 months； * Preoperative acute or chronic pain history (routine preoperative use of opioid or non-opioid analgesics), peripheral or central nervous system-related disorders； * Definitively diagnosed psychiatric disorders or other neuropsychiatric conditions severely affecting cognitive judgment, history of psychotropic medication use； * Allergy or intolerance to anesthetic agents； * Baseline mean arterial pressure (MAP) \<60 mmHg or \>120 mmHg; baseline heart rate (HR) \<45 bpm or \>90 bpm (Baseline values defined as first measurement taken in the ward after admission)； * History of severe underlying diseases (untreated or ongoing peripheral/central cardiovascular diseases, severe hepatic disorders with elevated bilirubin/INR or hypoalbuminemia, severe renal diseases with elevated creatinine, severe pulmonary diseases potentially causing acute respiratory failure or persistent dyspnea)； * Implanted pacemaker, chronic arrhythmia, preoperative use of prescribed anticholinergics, α2-adrenergic agonists, beta-1 adrenergic antagonists, or antiarrhythmic medications.

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Conditions

The condition(s) this trial relates to.

opioid abuse

As listed by the trial registrant

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

Opioid use

How to take part

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  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

  • Peking University Shenzhen Hospital

    RECRUITING

    Shenzhen, Guangdong, China

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