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Your sleep pattern may predict Post-Surgery confusion risk

NCT ID NCT07722481

Knowledge-focused Sponsor: The Second Affiliated Hospital of Chongqing Medical University Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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
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Expanded access (paused)
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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This status has not been confirmed recently, so it may be out of date.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 23, 2026 · Last updated Aug 05, 2026 · Updated 3 times

Summary

This study looks at whether a person's natural sleep preference—being a morning person, night owl, or in between—is linked to the risk of waking up confused after surgery. Researchers will review records from 235 older adults (65+) who had non-cardiac surgery under general anesthesia. The goal is to see if certain sleep types are more prone to emergence delirium, a common and distressing complication in elderly patients.

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 a link is found, it could help doctors identify which older patients are at higher risk for post-surgery confusion and tailor preventive care.
What could go wrong
This is a retrospective study, so it can only show an association, not cause and effect. Other factors may influence the results.

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

235 people

The number who actually took part.

Started

Oct 2024

Finished

Mar 2025

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

Researchers screened elderly inpatients scheduled to receive general anesthesia at The Second Affiliated Hospital of Chongqing Medical University from October 2024 to March 2025.

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. Age of 65 years or older. 2. Scheduled non-cardiac surgery under general anesthesia. 3. American Society of Anesthesiologists (ASA) physical status I-III. 4. Signed informed consent for surgical treatment. Exclusion Criteria: 1. Auditory or verbal impairment. 2. Long-term use of psychotropic drugs or alcohol abuse. 3. Pre-existing psychiatric disease or cognitive dysfunction. 4. A medical history of cerebral infarction, dementia or hypoalbuminemia. Withdrawal Criteria： 1. Surgery duration less than 60 minutes 2. Intraoperative blood transfusion 3. Intraoperative hypothermia or hypotension 4. Intraoperative administration of dexmedetomidine 5. Postoperative transfer to intensive care unit 6. Requirement for secondary surgical intervention

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Conditions

The condition(s) this trial relates to.

delirium Emergence Delirium

As listed by the trial registrant

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

Emergence delirium

Contacts and locations

Locations

  • The Second Affiliated Hospital of Chongqing Medical University

    Chongqing, Chongqing Municipality, 400010, China

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