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Flickering light and sound may shield young brains from Anesthesia's hidden risks

NCT ID NCT07719465

Disease control Sponsor: General Hospital of Ningxia Medical University Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 22, 2026 · Last updated Jul 23, 2026 · Updated 1 time

Summary

General anesthesia in early childhood may raise the risk of ADHD-like behaviors and learning problems later on. This trial tests whether a non-invasive device delivering synchronized 40-Hz light and sound can help restore brain function after surgery. Researchers will monitor brain waves with portable EEG and track behavior over six months in children aged 3 to 6 undergoing anesthesia. The goal is to see if this stimulation can reverse anesthesia-related brain changes and improve long-term outcomes.

What this could mean

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

Active substance
40-Hz non-invasive synchronized audiovisual stimulation delivered via a device
What this could lead to
If it works, this could lead to a simple, non-drug therapy to prevent ADHD-like behaviors in children after surgery under general anesthesia.
What could go wrong
This is an early-phase trial with only 80 children, so results may not be conclusive. The stimulation may not restore brain function or prevent ADHD symptoms as hoped.

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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 80 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Oct 2027

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

3 to 6 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: * Children aged 3-6 years, irrespective of sex, representing the critical period of brain network development. Classified as American Society of Anesthesiologists (ASA) Physical Status I or II. Scheduled to undergo elective single-session surgery under general anesthesia (including inhalational anesthesia with agents such as sevoflurane) with an expected anesthesia duration of ≥1 hour, including procedures such as inguinal hernia repair, orchiopexy, and adenoidectomy. Normal preoperative neurodevelopment as assessed by routine clinical evaluation, with parents or legal guardians able to understand the study protocol and willing to provide written informed consent. Exclusion Criteria: * A preoperative diagnosis of autism spectrum disorder (ASD), epilepsy, intellectual developmental disorder, attention-deficit/hyperactivity disorder (ADHD), or any other neurological or psychiatric disorder. Severe visual impairment (e.g., cataract or amblyopia) or significant hearing impairment that would preclude the administration of synchronized audiovisual stimulation. A personal or family history of photosensitive epilepsy, owing to safety considerations. Occurrence of major anesthesia-related complications during surgery, including severe allergic reactions, malignant hyperthermia, prolonged severe hypoxemia, or other serious perioperative adverse events.

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Conditions

The condition(s) this trial relates to.

attention deficit hyperactivity disorder, inattentive type attention deficit-hyperactivity disorder

As listed by the trial registrant

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

ADHD - attention deficit disorder with hyperactivity

How to take part

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  1. The official record

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