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Recruiting Observational

The Effect of Exercise-Induced Irisin on Brain Function and Postoperative Delirium in Older Adults

NCT07424170 · tracked via the Priya Life Science China tracker
Phase
Observational
Started
2026-07-01
Last updated
2026-09-10

Condition(s) studied

Post Operative Delirium

Investigational drug(s) / intervention(s)

Preoperative physical activity level

Preoperative physical activity level: Before the surgery, the activity levels of the participants over the past week were assessed using the Physical Activity Scale for the Elderly (PASE).

Study summary

The goal of this observational study is to learn how exercise-induced irisin protects the brain. It also explores irisin's effect on postoperative delirium (POD) in older adults. The main questions it aims to answer are:

Does daily activity link to POD? Does irisin play a mediating role in this process? Researchers will enroll active and inactive adults aged 65 and older. All will have surgery under spinal anesthesia. The researchers will measure irisin levels in spinal fluid. They will track POD and other complications for five days after surgery.

Eligibility

Sex
ALL
Min age
65 Years
Max age
—
Healthy volunteers
Accepted
Inclusion Criteria: * Aged ≥ 65 years; * Classified as ASA physical status I to III; * Scheduled for non-cardiovascular surgery under spinal anesthesia or combined spinal-epidural anesthesia; * Expected surgical duration of at least 2 hours; * Voluntarily provide written informed consent and agree to participate in this study. Exclusion Criteria: * Significant change in exercise status within the past 7 days due to injury or other reasons; * Contraindications to neuraxial anesthesia; * Unable to assess cognitive function or Montreal Cognitive Assessment (MoCA) score \< 23; * Preoperative diagnosis of delirium; * History of traumatic brain injury or neurosurgery; * Long-term opioid use or history of alcohol abuse; * Planned surgery cancelled or changed (including intraoperative events that significantly alter the procedure or duration); * Change in anesthesia method.

Primary outcome measure(s)

  • Postoperative Delirium — five days after surgery
    Delirium will be assessed using the CAM or CAM-ICU (for patients in the ICU) by researchers twice daily. For patients who develop POD, the severity of POD will be evaluated using the Delirium Rating Scale-Revised-98 (DRS-R-98).

Trial sites (1)

FacilityCityRegionStatus
Peking University People's Hospital Beijing Beijing Municipality Recruiting
Official registry record

This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.

View NCT07424170 on ClinicalTrials.gov ↗ ← All trials in China