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A Phase II Clinical Two-Stage Study of Transcranial Magnetic Stimulation in Preventing Postoperative Delirium in Elderly Patients After Urological Surgery

A Phase II Clinical Two-Stage Study of Transcranial Magnetic Stimulation in Preventing Postoperative Delirium in Elderly Patients After Urological Surgery

Status
Not yet recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07480044
Enrollment
220
Registered
2026-03-18
Start date
2026-03-20
Completion date
2028-12-01
Last updated
2026-03-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Kidney Tumor, Postoperative Delirium (POD), Prostate Cancer

Keywords

Transcranial Magnetic Stimulation Device, elderly patients, Postoperative Delirium

Brief summary

Cases were included based on the inclusion and exclusion criteria, and induction, maintenance, and recovery were conducted in accordance with the standard protocol for general anesthesia. After tracheal intubation and before tracheal tube removal at the end of the surgery, the parameters for iTBS stimulation frequency and duration were as follows: intensity was 80% of the active movement threshold, with 3 pulses per cluster at 50Hz, a frequency of 5Hz, 30 clusters of 10 pulses each, an 8 - second interval, and a single 600 - pulse; the 8 - shaped coil was connected to the electrodes in the designated head area (left frontal lobe cortex).Observation contents: Whether there is postoperative delirium and its severity: 3D - CAM assessment scale, DMAS assessment scale; awakening time, extubation time, PACU stay time, hospital stay time; 1 - 7 days after surgery or before discharge, POD assessment and pain - sleep assessment, the first time getting out of bed; postoperative complications; adverse reactions; adverse events, and so on.

Interventions

Cases were included based on the inclusion and exclusion criteria, and induction, maintenance, and recovery were conducted in accordance with the standard protocol for general anesthesia. After tracheal intubation and before tracheal tube removal at the end of the surgery, the parameters for iTBS stimulation frequency and duration were as follows: intensity was 80% of the active movement threshold, with 3 pulses per cluster at 50Hz, a frequency of 5Hz, 30 clusters of 10 pulses each, an 8 - second interval, and a single 600 - pulse; the 8 - shaped coil was connected to the electrodes in the designated head area (left frontal lobe cortex)

Sponsors

Zhejiang University
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
PREVENTION
Masking
NONE

Intervention model description

Transcranial Magnetic Stimulation Device

Eligibility

Sex/Gender
ALL
Age
60 Years to No maximum
Healthy volunteers
No

Inclusion criteria

(1) Age ≥ 60 years old; (2) Patients scheduled for elective urological surgery under general anesthesia with tracheal intubation; (3) ASA classification I - III; (4) Estimated operation duration ≥ 2 hours; (5) Informed consent from the patient or their guardian; (6) Proficient in communicating in Chinese. -

Exclusion criteria

(1) Patients with permanent lack of autonomy (2) Not applicable for delirium assessment: including language disorders, deafness, blindness or aphasia, coma (3) With treatment abandonment or brain death (4) Known pregnancy or lactation (5) Unable to obtain consent according to national regulations (6) Patients forcibly hospitalized by regulatory authorities (compulsory measures) (7) With cardiac pacemaker or stent implantation (8) Patients with delirium (9) Patients with known brain lesions (10) Patients with known epilepsy history, having taken drugs that can cause epileptic seizures, having metal implants in the neck or brain, or having cerebral hemorrhage ,Acute phase, acute infectious diseases (11) Habitual treatment with antipsychotic drugs (12) Received antipsychotic drug treatment in the ICU before enrollment (13) Patients with severe liver dysfunction (Child-Pugh C grade) (14) Patients with severe kidney dysfunction (requiring dialysis before surgery) (15) Severe heart failure (METS \< 4) (16) Preoperative cognitive impairment as determined by a MoCA evaluation prior to surgery; \-

Design outcomes

Primary

MeasureTime frameDescription
Incidence of postoperative delirium within 7 days after surgery.From the day of surgery to 7 days after surgery.Twice a day after surgery, once in the morning and once in the afternoonIn the anesthesia recovery room, the CAM-ICU(The Confusion Assessment method for the ICU ) scale was performed 30 min after extubation. Postoperative delirium was measured by the 3D-CAM (The 3-Minute Diagnostic Confusion Assessment Method)scale from postoperative day 1 until postoperative day 7 or before discharge from the hospital. The CAM scale includes four major features: 1. Acute onset or fluctuating changes in condition 2. Inattention 3. Confusion 4. Changes in level of consciousness. Delirium is diagnosed when features 1 and 2 are positive at the same time, and/or features 3 and 4 are positive.

Secondary

MeasureTime frameDescription
The severity of postoperative deliriumFrom the day of surgery to 7 days after surgeryIf the patient develops delirium, assess the severity with the MDAS( Memory Disorder Assessment Scale).The total score is 30 points, and the higher the score, the greater the degree of delirium

Countries

China

Contacts

CONTACTDiansan Su, Phd
184872238@qq.com86+18616514088
CONTACTWeiliu Zhu, Master
zhuweiliu1988@163.com86+057187236169

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 19, 2026