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Brain metabolism may foretell Post-Surgery confusion in elderly diabetics

NCT ID NCT07369466

Knowledge-focused Sponsor: Chinese PLA General Hospital 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study will follow 154 older adults with type 2 diabetes who are scheduled for liver tumor surgery. Researchers will measure brain glucose metabolism using a PET scan before surgery and then check for delirium (sudden confusion) for a week after. The goal is to see if lower brain metabolism can predict who will develop delirium, which could lead to better monitoring and prevention strategies.

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 provide a brain scan-based way to identify older diabetic patients at high risk for delirium after surgery, enabling earlier preventive care.
What could go wrong
This is an observational study, not a treatment trial. It only looks for a link between brain metabolism and delirium—it won't test any intervention. Results may not apply to all surgeries or 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 154 people

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

Expected to start

Feb 2026

An estimate. Start dates often move.

Expected to finish

Jun 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

This prospective cohort study will enroll elderly patients (age ≥ 65 years) diagnosed with type 2 diabetes mellitus (T2DM) who are scheduled for elective liver tumor resection surgery with an expected duration of \>2 hours at the First Medical Center of Chinese PLA General Hospital. All participants will undergo preoperative ¹⁸F-FDG PET/CT scanning and cognitive assessment, and will be prospectively followed for the occurrence of postoperative delirium.

Ages

65 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: 1. Diagnosed with type 2 diabetes mellitus (T2DM). 2. Age ≥ 65 years. 3. Scheduled for elective liver tumor resection surgery with an expected operative duration \> 2 hours. 4. Underwent whole-body ¹⁸F-FDG PET/CT scan within 1 month prior to surgery. Exclusion Criteria: 1. Patient declines to participate. 2. Inability to cooperate with cognitive assessments or a preoperative Mini-Mental State Examination (MMSE) score \< 23. 3. American Society of Anesthesiologists (ASA) physical status classification ≥ IV. 4. History of organic brain disorders, including stroke, traumatic brain injury, or intracranial tumors. 5. History of psychiatric disorders or current use of antipsychotic medications.

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Conditions

The condition(s) this trial relates to.

Emergence Delirium liver and intrahepatic bile duct neoplasm type 2 diabetes mellitus

As listed by the trial registrant

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

Postoperative delirium Type 2 diabetes

How to take part

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  1. 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 ↗

  2. A doctor treating you

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More trials for these conditions

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