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Status unknownNCT04721210Updated Mar 19, 2021

The Effectiveness of Transcranial Magnetic Stimulation of Supplementary Motor Area (SMA) in Patients With Bladder Hypersensitivity and Bladder Pain

An interventional study of Transcranial magnetic stimulation in Bladder Hypersensitivity, sponsored by Joint-Stock Company North-West Center for Evidence-Based Medicine, Russian Federation. Status unknown at 1 site in Russian Federation. Open to female participants aged 18 Years to 75 Years. Per ClinicalTrials.gov, last updated 2021-03-19.

Sponsored by Joint-Stock Company North-West Center for Evidence-Based Medicine, Russian Federation · Not applicable, Interventional, and Other

The sponsor has not verified this record recently (last verified Mar 2021), so the status shown — last known as Recruiting — may be out of date.
Phase
Not applicable
Study type
Interventional
Enrollment
28
Allocation
Randomized
Ages
18 Years to 75 Years
Sex
Female
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Study summary

The main hypothesis of this study is that transcranial magnetic neuromodulation can correct the symptoms of hypersensitivity and bladder pain. The investigators assume that under the influence of transcranial magnetic stimulation, both the subjective state of patients assessed by standardized questionnaires and the objective parameters assessed by invasive and non-invasive urodynamic studies will be improved. In this study, two protocols for magnetic stimulation of the supplementary motor area (SMA) will be compared with each other and with placebo. The investigators expect to determine the dependence of the therapeutic effect on the applied stimulation protocol.

Read the detailed description

The aim of the study is to test the hypothesis that the use of the magnetic stimulation method SMA in patients with symptoms of bladder hypersensitivity and bladder pain will help to reduce the clinical and urodynamic signs of these pathological conditions.

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Conditions studied

  • Bladder Hypersensitivity

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03

In context

Hypersensitivity

1,916 studies on the registry are indexed under Hypersensitivity; 265 are open to participants now.

This study's planned enrollment of 28 is below the median of 57 across 1,384 interventional studies indexed under Hypersensitivity.

Browse Hypersensitivity studies →

Lead sponsor

Joint-Stock Company North-West Center for Evidence-Based Medicine, Russian Federation is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years to 75 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. Age > 18 years;
  2. Signed informed consent;
  3. The presence of OAB symptoms: urinary frequency, nocturia, urgency and urge incontinence; discomfort during filling the bladder, pain in the projection of the bladder over the womb.
  4. Resistance to standard therapy for bladder hypersensitivity and bladder pain.

Exclusion criteria

Exclusion Criteria:

  1. The patient, who have been implanted devices that control physiological functions (a pacemaker, a device for deep brain stimulation and chronic epidural brain stimulation, a cochlear implant).
  2. Convulsive attacks in the anamnesis;
  3. Taking medications that may trigger the risk of seizures;
  4. Pregnancy or suspicion on it;
  5. The presence in the patient's body of metal elements or objects made with the use of ferromagnets (joint prostheses, eye prostheses, tattoos made using metal ink, surgical clips, staples and other metal suture materials, etc.)
  6. Chronic cardiovascular and cerebrovascular diseases in the stage of decompensation or recent acute conditions (myocardial infarction, brain stroke, etc.)
  7. A history of injuries associated with impaired conduction along the pathways of the brain and spinal cord;
  8. The presence of detrusor hyperactivity patterns according to the preliminary multichannel urodynamic study;
  9. The presence of infravesical obstruction in men, determined by uroflowmetry (obstructive urination curve according to the Liverpool nomogram);
  10. The postvoid residual volume (more than 100 ml);
  11. The presence of urinary tract infection;
  12. A history of cancer;
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Study design

Phase
Not applicable
Primary purpose
Other
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
28 participants (estimated)

Study arms

  • Experimental
    Frequency of 1 Hz

    continuous stimulation with a frequency of 1 Hz, 2000 pulses, 10 days-daily;

    Other: Transcranial magnetic stimulation

  • Experimental
    Frequency of 10 Hz

    continuous stimulation with a frequency of 10 Hz-10 seconds with a pause of 50 seconds, 2000 pulses, 10 days-daily;

    Other: Transcranial magnetic stimulation

  • Placebo comparator
    Continuous stimulation placebo

    continuous stimulation placebo

    Other: Transcranial magnetic stimulation

Interventions

  • OtherTranscranial magnetic stimulation

    The investigated method is called transcranial magnetic The impact on the SMA will be made using a special inductor of the "double conical coil" type. Navigation will be carried out through the use of the international system "10-20%". The threshold of motor response will be determined by stimulating the motor area of the legs with the intensity of stimulation necessary to trigger a motor response with an amplitude of more than 50 mv.

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What researchers measure

Primary outcomes

  1. VAPS change score

    VAPS is a continuous scale in the form of a horizontal or 10 cm (100 mm) long and located on it with two extreme points "no pain" and "the strongest pain that can be imagined

    Time frame: Baseline, 4, 12, 24, 48 weeks

  2. OAB-Q SF change score

    Individual participant change score on the Overactive Bladder Questionnaire short-form (OAB-q SF) will be compared between the two cohorts by student's t-test. The OAB-q SF is utilized to assess the impact of OAB symptoms on the patient's life, and has been shown to be responsive to reductions in urinary urgency, frequency and incontinence during transvertebral magnetic neuromodulation therapy. The OAB-q SF questionnaire consists of 19 items divided into a 6-item symptom severity (SS) scale and a 13-item health-related quality of life (HRQL) scale, with both scales ranging from 0 to 100. For the OAB-q SS scale a higher score indicates worse symptom severity while for the OAB-q HRQL scale a higher score indicates better quality of life.

    Time frame: Baseline, 4, 12, 24, 48 weeks

  3. Hospital Anxiety and Depression Scale change score

    The Hospital Anxiety and Depression Scale (HADS) consists of 14 questions: 7 questions assessing anxiety and 7 questions assessing the presence of depression.

    Time frame: Baseline, 4, 12, 24, 48 weeks

  4. Change baseline of micturition episodes per day

    Patients should document how many times they go to the restroom during the day and at night, as well as the loss of urine in stressful situations (coughing, sneezing, laughter, squatting, weightlifting, walking, running), changing liner or absorbent and episodes of urgency and urgency-incontinence. The journal shall be held for a consecutive period of 24 hours, for a minimum of three consecutive days.

    Time frame: Baseline, 4, 12, 24, 48 weeks

Secondary outcomes

  1. Improvement of urodynamic parameters

    Secondary endpoints were evaluated using invasive and non-invasive urodynamic studies: uroflowmetry, filling cystometry, and pressure/flow studies. Invasive urodynamic studies will be performed using a transurethral catheter with 3 lumen transurethral catheter in the bladder and a balloon catheter installed in the vagina or rectum to measure abdominal pressure. The rate of filling the bladder is 30 ml/min in the patient's sitting position on the uroflowmetric chair.

    Time frame: Baseline, 4, 12, 24, 48 weeks

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Study locations

1 of 1 sites recruiting
  • Joint-Stock Company "North-Western Centre of Evidence-Based Medicine"
    Saint-Petersburg, 196158, Russian Federation
    Recruiting
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 19, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04721210
Lead sponsor
Joint-Stock Company North-West Center for Evidence-Based Medicine, Russian Federation
Responsible party
Sponsor
First posted
Jan 22, 2021
Start date
Jan 20, 2021
Primary completion
Jan 20, 2022 (estimated)
Completion
Jan 20, 2022 (estimated)
Last update
Mar 19, 2021

Study contacts

Gleb Kovalev, MD
Contact
kovalev2207@gmail.com
+78126004712
Dmitriy Shkarupa, Phd
Contact
shkarupa.dmitry@mail.ru

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is status unknown, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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