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Brain wave monitor tested during surgery sedation

NCT ID NCT07468162

Knowledge-focused Sponsor: First Affiliated Hospital of Zhejiang 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 will monitor brain wave patterns in 48 adults undergoing orthopedic surgery under sedation with one of three drugs: remimazolam, dexmedetomidine, or midazolam. Researchers aim to see how these drugs change brain activity from the start of sedation through recovery. The goal is to better understand the unconscious state and improve monitoring during surgery.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
remimazolam, dexmedetomidine, or midazolam
What this could lead to
If successful, this could help doctors better understand how different sedatives affect brain activity during surgery, potentially improving anesthesia monitoring.
What could go wrong
This is a small, early-stage observational study with only 48 participants. It is not designed to test treatment effectiveness, and results may not apply to all patients or surgeries.

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 48 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Jan 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

Patients undergoing elective orthopedic surgery under nerve block combined with intravenous anesthesia

Ages

20 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: 20 - 60 years old. BMI: 18 ≤ BMI ≤ 24 kg/m2. Right-handed. ASA classification: I - II. Patients scheduled for extremity surgery of upper and lower limbs and undergoing nerve block, those who understand and sign the informed consent form, and those receiving non-endotracheal general anesthesia with remimazolam or dexmedetomidine or midazolam, with Mallampati classification: I - II. Exclusion Criteria: * Skin infection at the site of nerve block puncture; history of smoking and alcohol abuse, history of brain surgery, history of cerebral infarction, mental and neurological disorders (MMSE \< 18, 3D-CAM positive), history of taking any psychotropic or opioid drugs within 2 weeks, hearing impairment, cardiovascular disease, expected difficulty in airway management or sleep apnea syndrome, drug (including those with a history of allergic reaction to the test drug or contraindications for use) or food allergies, pregnant or lactating patients, patients or family members who refuse to participate, and those who refuse to undergo nerve block.

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As listed by the trial registrant

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

Eeg data analysis Orthopedic surgery

How to take part

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  1. The official record

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