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

19 de agosto de 2026 actualizado por: 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.

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

Fase

No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Nombre: Daniel KY Zheng, PhD
Número de teléfono: +852 53205956
Correo electrónico: daniel.zheng@polyu.edu.hk

Copia de seguridad de contactos de estudio

Nombre: Daniel KY Zheng, PhD
Número de teléfono: +852 53205956
Correo electrónico: kangyong.zheng@connect.polyu.hk

Ubicaciones de estudio

Porcelana
- Hong Kong
  - Hong Kong, Hong Kong, Porcelana, 999077
    - The Hong Kong Polytechnic University

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

Adulto
Adulto Mayor

Acepta Voluntarios Saludables

Descripción

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.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

Propósito principal: Tratamiento
Asignación: Aleatorizado
Modelo Intervencionista: Asignación paralela
Enmascaramiento: Doble

Armas e Intervenciones

Grupo de participantes/brazo Grupo de participantes/brazo Un grupo o subgrupo de participantes en un ensayo clínico que recibe una intervención/tratamiento específico, o ninguna intervención, según el protocolo del ensayo.	Intervención / Tratamiento Intervención / Tratamiento Un proceso o acción que es el foco de un estudio clínico. Las intervenciones incluyen medicamentos, dispositivos médicos, procedimientos, vacunas y otros productos que están en fase de investigación o que ya están disponibles. Las intervenciones también pueden incluir enfoques no invasivos, como la educación o la modificación de la dieta y el ejercicio.
Experimental: Active transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)	Dispositivo: Active transcranial direct current stimulation (tDCS) 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. Conductual: 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.
Comparador falso: Sham transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)	Conductual: 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. Dispositivo: Sham transcranial direct current stimulation (tDCS) 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.

Grupo de participantes/brazo

Intervención / Tratamiento

Experimental: Active transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)

Dispositivo: Active transcranial direct current stimulation (tDCS)

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.

Conductual: 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.

Comparador falso: Sham transcranial direct current stimulation (tDCS) + pelvic floor muscle training (PFMT)

Conductual: Pelvic floor muscle training (PFMT)

Dispositivo: Sham transcranial direct current stimulation (tDCS)

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.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado	Medida Descripción	Periodo de tiempo
Overactive bladder symptoms severity Periodo de tiempo: 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

Medidas de resultado secundarias

Medida de resultado	Medida Descripción	Periodo de tiempo
Recruitment Rate Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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 Periodo de tiempo: 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

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

The Hong Kong Polytechnic University

Investigadores

Investigador principal: Priya Kannan, PhD, The Hong Kong Polytechnic University

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

14 de septiembre de 2026

Finalización primaria (Estimado)

31 de diciembre de 2027

Finalización del estudio (Estimado)

31 de diciembre de 2027

Fechas de registro del estudio

Enviado por primera vez

2 de agosto de 2026

Primero enviado que cumplió con los criterios de control de calidad

12 de agosto de 2026

Publicado por primera vez (Actual)

17 de agosto de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

21 de agosto de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

19 de agosto de 2026

Última verificación

1 de agosto de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

HSEARS20260727002

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

Descripción del plan IPD

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

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

Sí

producto fabricado y exportado desde los EE. UU.

Sí

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