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Brain waves may guide safer anesthesia dosing

NCT ID NCT04529304

Knowledge-focused Sponsor: Oslo University Hospital 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at whether using EEG brain-wave monitoring during general anesthesia helps doctors give the right amount of medicine. The goal was to help patients wake up faster after surgery and reduce memory or thinking problems. About 100 adults having surgery took part. Researchers tracked drug doses, wake-up time, and thinking skills using special tests before and after surgery.

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

100 people

The number who actually took part.

Started

Jan 2021

Finished

Mar 2026

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 85 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 . Participants are eligible to be included in the study only if all of the following criteria apply: Age 1. Participant must be above the age of 18 years , at the time of signing the informed consent. Sex 2. Male and/or female Informed Consent 3. Capable of giving signed informed consent as described in protocol which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in the protocol Exclusion Criteria Participants are excluded from the study if any of the following criteria apply: 4. Psychiatric disorders 5. Pregnancy 6. Breast feeding 7. Using antiepileptic drugs. 8. Central neurological disease 9. Unable to complete baseline CANTAB-test.

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Conditions

The condition(s) this trial relates to.

cognitive disorder Cognitive Dysfunction Delayed Emergence from Anesthesia Postoperative Complications

As listed by the trial registrant

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

Cognitive dysfunction Delayed emergence from anesthesia Postoperative complications

Contacts and locations

Locations

  • Oslo University Hospital

    Oslo, Oslo, 0124, Norway

More trials for these conditions

Other studies related to the condition(s) this trial covers.