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Can brain waves predict Post-Surgery confusion in seniors?

NCT ID NCT06394778

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
Registered, but not yet taking participants.
By invitation only This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at how brain wave (EEG) patterns change during anesthesia in older adults having joint or spine surgery. Researchers will track whether these patterns relate to postoperative delirium, a common confusion after surgery. About 375 patients aged 60 and older will have EEGs recorded before, during, and after surgery, and be checked for delirium using a simple test. The goal is to find early warning signs that could help doctors prevent or manage delirium.

What this could mean

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

What this could lead to
If successful, this could help doctors identify patients at risk of postoperative confusion earlier, potentially leading to better monitoring and care.
What could go wrong
This is an observational study, not a treatment trial. It will not directly prevent or cure delirium, and results may not apply to all surgical patients.

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 375 people

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

Started

May 2024

Expected to finish

Apr 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.

Who is studied

Elderly patients undergoing elective orthopedic joint replacement or spinal surgery

Ages

60 years and older

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: Patients aged ≥ 60 years, scheduled for orthopedic joint replacement or spinal surgery, ASA grade I-III, expected surgery time ≥ 2 hours, and able to provide written informed consent. Exclusion Criteria: 1. Patients with central nervous system diseases or mental disorders; 2. patients with severe systemic diseases such as cardiopulmonary, liver and kidney dysfunction, coagulation dysfunction, etc.; 3. patients who frequently use psychotropic drugs, opioids or corticosteroids; 4. patients with a history of intraoperative awareness; 5. patients who are unable to complete preoperative delirium screening due to severe blindness, deafness, illiteracy or Mandarin speaking; 6. patients who are expected to undergo a second operation within 7 days.

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Conditions

The condition(s) this trial relates to.

Emergence Delirium

As listed by the trial registrant

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

Electroencephalogram Postoperative delirium (POD)

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

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    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 First Affiliated Hospital, Zhejiang University, School of Medicine

    Hangzhou, Zhejiang, 310003, China

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