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Transcranial Direct Current Stimulation for Neurogenic Overactive Bladder Symptoms Among People With Stroke

19. august 2026 opdateret af: Dr. Priya Kannan, The Hong Kong Polytechnic University

Transcranial Direct Current Stimulation for Neurogenic Overactive Bladder Symptoms Among People With Stroke: a Randomized Controlled Pilot Trial

Neurogenic overactive bladder (nOAB) is a common and distressing sequela following stroke, significantly impairing quality of life and imposing a substantial financial burden. Existing pharmacological options often present adverse effects, while standard non-pharmacological treatments, such as pelvic floor muscle training (PFMT), face compliance and efficacy limitations in individuals with functional impairments. Transcranial direct current stimulation (tDCS) is a non-invasive brain stimulation technique capable of modulating neuronal excitability and cortical plasticity. Targeting the supplementary motor area (SMA) via tDCS may regulate pelvic floor muscle (PFM) and detrusor activities. However, clinical evidence evaluating tDCS as an adjuvant to PFMT for stroke survivors with nOAB is lacking. This randomized controlled pilot trial aims to evaluate the feasibility, preliminary effectiveness, and cost-utility of active tDCS combined with PFMT compared to sham tDCS plus PFMT in stroke survivors suffering from nOAB.

Studieoversigt

Status

Ikke rekrutterer endnu

Betingelser

Intervention / Behandling

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

60

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

Undersøgelse Kontakt Backup

Studiesteder

    • Hong Kong
      • Hong Kong, Hong Kong, Kina, 999077
        • The Hong Kong Polytechnic University

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

  • Aged between 18-80 years with onset of stroke within one and twelve months of enrollment and having overactive bladder (OAB) symptoms;
  • Experiencing moderate (scoring 6-11 points on the Overactive Bladder Symptom Score [OABSS]) to severe OAB (scoring ≥ 12 points on OABSS);
  • Obtaining a Mini-Mental State Examination (MMSE) score of ≥ 24.

Exclusion Criteria:

  • Presence of metallic implants in the cranium, intracardiac lines, increased intracranial pressure, cardiac pacemaker, cochlear implants, tumour, and skull abnormalities;
  • Family history of epilepsy/seizures;
  • Contraindications to transcranial magnetic stimulation.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Behandling
  • Tildeling: Randomiseret
  • Interventionel model: Parallel tildeling
  • Maskning: Dobbelt

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Active transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)
Participants will receive active tDCS (1.5 mA for 20 minutes; current density 0.06 mA/cm²) 3 times per week for 8 weeks. tDCS will be conducted using two 5 x 7 cm² surface electrodes connected to a battery-powered stimulator (Neuroelectrics Instrument Controller, v 2.0). The anodal electrode will be placed over the supplementary motor area, and the cathodal electrode over the contralateral supraorbital region.
Immediately following tDCS, participants will receive supervised, individual (1:1) PFMT for 30 minutes per session, consisting of pelvic floor contraction exercises (contracting the urethra/shortening the penis and controlling passage of gas), each held for 10 seconds and followed by 10 seconds of relaxation. PFMT will be performed 3 times per week for 8 weeks.
Sham-komparator: Sham transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)
Immediately following tDCS, participants will receive supervised, individual (1:1) PFMT for 30 minutes per session, consisting of pelvic floor contraction exercises (contracting the urethra/shortening the penis and controlling passage of gas), each held for 10 seconds and followed by 10 seconds of relaxation. PFMT will be performed 3 times per week for 8 weeks.
Participants will receive sham tDCS (active current for 30 seconds, then turned off) 3 times per week for 8 weeks. tDCS will be conducted using two 5 x 7 cm² surface electrodes connected to a battery-powered stimulator (Neuroelectrics Instrument Controller, v 2.0). The anodal electrode will be placed over the supplementary motor area, and the cathodal electrode over the contralateral supraorbital region.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Overactive bladder symptoms severity
Tidsramme: Baseline and post-intervention at 8 weeks
Overactive bladder symptoms severity will be assessed using Overactive Bladder Symptom Score (OABSS). The total score of OABSS ranges from 0 to 15, with a higher score indicating higher symptom severity.
Baseline and post-intervention at 8 weeks

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Recruitment Rate
Tidsramme: Through study completion, an average of 1 year.
Number of participants recruited and screened per week during the recruitment period. The unit of measure is participants/week.
Through study completion, an average of 1 year.
Time to Complete Recruitment
Tidsramme: Through study completion, an average of 1 year.
Total time required to recruit the full study sample. The unit of measure is weeks.
Through study completion, an average of 1 year.
Retention Rate
Tidsramme: Baseline to 8 weeks
Percentage of enrolled participants who complete assessments at 8 weeks post-intervention, calculated as (number completing 8-week assessment / number enrolled) × 100. The unit of measure is %.
Baseline to 8 weeks
Adherence to Intervention
Tidsramme: Baseline to 8 weeks
Percentage of total prescribed intervention sessions attended, calculated as (number of sessions attended / number of sessions prescribed) × 100. The unit of measure is %.
Baseline to 8 weeks
Adverse Events
Tidsramme: Baseline to 8 weeks
Number of participants in each group who experience adverse events, monitored throughout the intervention.
Baseline to 8 weeks
Detrusor Wall Thickness
Tidsramme: Baseline and post-intervention at 8 weeks
Detrusor wall thickness measured using the Mindray Consona N9 ultrasound system (Sonos Medical Limited) with a convex transducer of 3-6 MHz. An increase in detrusor wall thickness indicates detrusor overactivity. The unit of measure is millimeter (mm).
Baseline and post-intervention at 8 weeks
Bladder Neck Elevation
Tidsramme: Baseline and post-intervention at 8 weeks
Bladder neck elevation, a surrogate measure of pelvic floor muscle strength, will be measured using the Mindray Consona N9 ultrasound system (Sonos Medical Limited). Greater bladder neck elevation indicates stronger pelvic floor muscle strength. The unit of measure is millimeter (mm).
Baseline and post-intervention at 8 weeks
Health-Related Quality of Life
Tidsramme: Baseline and post-intervention at 8 weeks
Health-related quality of life will be assessed using the EuroQol 5-Dimension 5-Level (EQ-5D-5L) questionnaire. The score ranges from -0.864 to 1.0, where 1.0 indicates full health and higher scores indicate better health-related quality of life.
Baseline and post-intervention at 8 weeks
Healthcare Costs
Tidsramme: Baseline and post-intervention at 8 weeks.
Healthcare Costs will be collected using the Client Service Receipt Inventory (CSRI) to calculate total healthcare-related costs per participant from both healthcare provider and societal perspectives. The unit of measure is Hong Kong Dollars (HKD).
Baseline and post-intervention at 8 weeks.
Incontinence-related quality of life
Tidsramme: Baseline and post-intervention at 8 weeks
Incontinence-related quality of life will be assessed using the Incontinence Quality of Life Questionnaire (I-QoL). The I-QoL score ranges from 0-100, with higher scores indicating higher quality of life.
Baseline and post-intervention at 8 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Efterforskere

  • Ledende efterforsker: Priya Kannan, PhD, The Hong Kong Polytechnic University

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Anslået)

14. september 2026

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

2. august 2026

Først indsendt, der opfyldte QC-kriterier

12. august 2026

Først opslået (Faktiske)

17. august 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

21. august 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

19. august 2026

Sidst verificeret

1. august 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • HSEARS20260727002

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Because the IPD will contain sensitive privacy data of the participants, it will not be suitable to be shared.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

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Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

produkt fremstillet i og eksporteret fra U.S.A.

Ja

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