NCT06542978

Brief Summary

Postoperative delirium is an acute central nervous system dysfunction caused by surgical stress, which is manifested by postoperative acute, non-specific changes in consciousness level, attention, cognitive ability and disturbance of sleep and wake cycles. It is one of the most common surgical complications in the elderly, occurring in more than 75% of patients receiving mechanical ventilation in the intensive care unit(ICU).Exogenous 40 Hz stimulation can improve cognitive functioning.Therefore, the aim of this study was to investigate the effect of exogenous 40Hz stimulation on the incidence of postoperative delirium in elderly patients undergoing elective gastrointestinal surgery in AICU.

Trial Health

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Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
98

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started May 2024

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 1, 2024

Completed
3 months until next milestone

First Submitted

Initial submission to the registry

July 23, 2024

Completed
15 days until next milestone

First Posted

Study publicly available on registry

August 7, 2024

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 1, 2025

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 1, 2025

Completed
Last Updated

October 28, 2024

Status Verified

August 1, 2024

Enrollment Period

10 months

First QC Date

July 23, 2024

Last Update Submit

October 24, 2024

Conditions

Outcome Measures

Primary Outcomes (1)

  • The incidence of postoperative delirium

    Postoperative delirium was assessed using the CAM-ICU scale.The RASS score (The Richmond Agitation-Sedation Scale) was used to assess arousal. When the patient's RASS score is not -4 /-5, delirium evaluation can continue considering the patient's wakefulness status.CAM-ICU scale contains four features (Feature 1, Feature 2, Feature 3, and Feature 4). Delirium can be diagnosed when the patient is positive for features 1, 2, 3, or 4.

    Day 1, Day 2, Day 3 ,Day 4, Day 5, Day 6,Day 7 after surgery

Secondary Outcomes (3)

  • Blood Markers

    half hour, 6hours, 24hours and 48hours after transfer to aicu

  • Sleep quality

    8:00 to 10:00 every morning for the first three days after surgery

  • The incidence of pain

    6hours, 24hours, 48hours after surgery

Study Arms (2)

40Hz stimulation group

EXPERIMENTAL

After admission to AICU, the experimental group was stimulated at 40Hz for 6h;

Device: 40Hz stimulation

Control group

NO INTERVENTION

After admission to AICU, the control group was not stimulated at 40Hz ;

Interventions

Exogenous 40HZ stimulation is a physical intervention that can drive oscillations in the gamma range, and the oscillations and pulses caused at the corresponding frequency can lead to a significant reduction in β-amyloid, reverse tau hyperphosphorylation, and thereby improve the cognitive function of patients.

40Hz stimulation group

Eligibility Criteria

Age65 Years+
Sexall
Healthy VolunteersNo
Age GroupsOlder Adult (65+)

You may qualify if:

  • Age ≥ 65 years old,gender not limited
  • ASA classification Ⅱ \~ Ⅳ
  • Elective gastrointestinal general anesthesia surgery

You may not qualify if:

  • History of schizophrenia, epilepsy, Parkinson's disease, or myasthenia gravis
  • Pre-operative coma, severe dementia, speech impairment or severe illness incapacitated and unable to communicate
  • Delirium on admission or pre-operative delirium, brain injury
  • Severely infected person
  • Severe liver dysfunction (Child-Pugh C), severe renal insufficiency (preoperative dialysis)
  • Severe hearing or vision impairment

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Henan People's Hospital

Zhengzhou, Henan, China

RECRUITING

MeSH Terms

Conditions

Emergence Delirium

Condition Hierarchy (Ancestors)

DeliriumConfusionNeurobehavioral ManifestationsNeurologic ManifestationsNervous System DiseasesPostoperative ComplicationsPathologic ProcessesPathological Conditions, Signs and SymptomsSigns and SymptomsNeurocognitive DisordersMental Disorders

Central Study Contacts

Zhang jiaqiang

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

July 23, 2024

First Posted

August 7, 2024

Study Start

May 1, 2024

Primary Completion

March 1, 2025

Study Completion

March 1, 2025

Last Updated

October 28, 2024

Record last verified: 2024-08

Locations