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Standardized 4D Transperineal Ultrasound Assessment of Urethrovesical Junction Mobility After Vaginal Laser Treatment for Stress Urinary Incontinence.

4 de novembro de 2026 atualizado por: Jan Dvořák, Charles University, Czech Republic

Standardized 4D Transperineal Ultrasound Assessment of Urethrovesical Junction Mobility After Vaginal Laser Treatment for Stress Urinary Incontinence: a Prospective Observational Cohort Study

This prospective single-center observational cohort study will assess changes in urethrovesical junction (UVJ) mobility and urethral morphology after vaginal Er:YAG laser treatment in 40 adult women with pure stress urinary incontinence (SUI) or stress-predominant mixed urinary incontinence.

Participants will independently choose self-paid laser treatment as routine clinical care before being offered study participation. Treatment comprises three sessions at 4-6-week intervals. Standardized 4D transperineal ultrasound and clinical assessments will be performed at baseline and 1, 3, and 6 months after the final session.

The primary outcome is change in craniocaudal UVJ mobility, measured in millimeters, from baseline to 1 month after the final session. Secondary outcomes include UVJ mobility at 3 and 6 months, UVJ position, mid-urethral morphology, patient-reported outcomes, cough stress test results, adverse events, and initiation of additional SUI treatment. Exploratory analyses will assess associations between ultrasound changes and clinical outcomes.

Visão geral do estudo

Status

Recrutamento

Condições

Tipo de estudo

Observacional

Inscrição (Estimado)

40

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Contato de estudo

  • Nome: Jan Dvorak, M.D. Ph.D.
  • Número de telefone: 00420224967577
  • E-mail: jan.dvorak2@vfn.cz

Locais de estudo

      • Prague, Tcheca, 142 00
        • Recrutamento
        • General University Hospital in Prague
        • Contato:

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

18 anos e mais velhos (Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Fêmea

Método de amostragem

Amostra de Probabilidade

População do estudo

Adult female patients attending the participating outpatient clinical site who have independently elected to undergo self-paid vaginal laser treatment as routine clinical care for pure stress urinary incontinence or stress-predominant mixed urinary incontinence. Patients must have urodynamically demonstrated stress urinary incontinence without detrusor overactivity. Patients will be screened consecutively during the recruitment period, and those meeting the eligibility criteria will be invited to participate.

Descrição

Inclusion Criteria:

  • Female sex.
  • Age 18 years or older.
  • Pure stress urinary incontinence or stress-predominant mixed urinary incontinence. In women with mixed urinary incontinence, the stress component must be the dominant and most bothersome symptom.
  • Urodynamically demonstrated stress urinary incontinence.
  • Absence of detrusor overactivity on urodynamic testing.
  • Independent decision to undergo self-paid vaginal laser treatment as routine clinical care, made before the offer of study participation.
  • Ability to complete the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF).
  • Ability to perform a technically acceptable Valsalva maneuver.
  • Willingness to attend the scheduled follow-up visits.
  • Written informed consent to study participation.

Exclusion Criteria:

  • Predominant overactive bladder or predominant urgency urinary incontinence.
  • Previous surgery for stress urinary incontinence.
  • Previous vaginal laser treatment.
  • Previous pelvic organ prolapse surgery.
  • Pelvic Organ Prolapse Quantification (POP-Q) stage II or greater in any compartment.
  • Current pessary use at enrollment.
  • Active pelvic floor physiotherapy at enrollment.
  • Previous pelvic radiotherapy.
  • Pregnancy.
  • Unexplained genital bleeding.
  • Pelvic malignancy.
  • Any other contraindication to vaginal laser treatment.
  • Active urinary tract or vaginal infection. Enrollment and laser treatment will be deferred until the infection has resolved.

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Modelos de observação: COHORT
  • Perspectivas de Tempo: PROSPECTIVE

Coortes e Intervenções

Grupo / Coorte
Stress urinary incontinence

A prospective cohort of 40 women aged 18 years or older with urodynamically demonstrated pure stress urinary incontinence or stress-predominant mixed urinary incontinence, without detrusor overactivity. Participants independently choose vaginal laser treatment as routine clinical care before being offered study enrollment. Treatment comprises three non-ablative Er laser sessions (Fotona SP Dynamis Pro; IncontiLase, SMOOTH mode) at 4-6-week intervals. Standardized 4D transperineal ultrasound and clinical assessments are performed before the first session and at 1, 3, and 6 months after the final session.

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Change From in Craniocaudal Urethrovesical Junction Mobility
Prazo: Baseline (before the first laser session) and 1 month after the final laser session.

Within-participant change in craniocaudal urethrovesical junction (UVJ) mobility, measured in millimeters using standardized 4D transperineal ultrasound. UVJ position is measured relative to a horizontal reference line through the posteroinferior margin of the pubic symphysis, with cranial positions coded as negative and caudal positions as positive. Mobility is calculated as UVJ position during maximal Valsalva minus UVJ position at rest. Change is calculated as mobility at 1 month after the final laser session minus baseline mobility. Negative values indicate reduced mobility.

Baseline (before the first laser session) and 1 month after the final laser session.

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Change From Baseline in Craniocaudal Urethrovesical Junction Mobility at 3 and 6 Months After the Final Laser Session
Prazo: Baseline (before the first laser session) and 3 and 6 months after the final laser session.

Within-participant change in craniocaudal urethrovesical junction (UVJ) mobility, measured in millimeters using standardized 4D transperineal ultrasound. Mobility is calculated as UVJ position during maximal Valsalva minus UVJ position at rest. Change is follow-up mobility minus baseline mobility, assessed separately at 3 and 6 months. Negative values indicate reduced mobility.

Baseline (before the first laser session) and 3 and 6 months after the final laser session.
Change From Baseline in Urethrovesical Junction Position at Rest
Prazo: Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.

Change in craniocaudal urethrovesical junction position at rest, measured in millimeters using 4D transperineal ultrasound relative to a horizontal line through the posteroinferior margin of the pubic symphysis. Cranial positions are negative and caudal positions positive. Change is follow-up position minus baseline position.

Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.
Change From Baseline in Mid-Urethral Hypoechoic Cross-Sectional Area at Rest
Prazo: Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.

Change in the cross-sectional area of the hypoechoic mid-urethral region at rest, measured in square millimeters by manual tracing on 4D transperineal ultrasound. The measurement plane is perpendicular to the urethral axis at 50% of sonographic urethral length. Change is follow-up area minus baseline area.

Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.
Change From Baseline in ICIQ-UI SF Total Score
Prazo: Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.

Change in the International Consultation on Incontinence Questionnaire-Urinary Incontinence Short Form (ICIQ-UI SF) total score. Scores range from 0 to 21, with higher scores indicating greater urinary incontinence severity and impact. Change is follow-up score minus baseline score; negative values indicate improvement.

Baseline (before the first laser session) and 1, 3, and 6 months after the final laser session.
Patient Global Impression of Improvement Category
Prazo: 1, 3, and 6 months after the final laser session

Distribution of responses on the Patient Global Impression of Improvement (PGI-I), a 7-point scale assessing perceived change in urinary incontinence compared with the pretreatment condition. Scores range from 1 (very much better) to 7 (very much worse), with 4 indicating no change. Lower scores indicate greater perceived improvement.

1, 3, and 6 months after the final laser session

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Estimado)

1 de janeiro de 2027

Conclusão Primária (Estimado)

31 de dezembro de 2029

Conclusão do estudo (Estimado)

31 de dezembro de 2029

Datas de inscrição no estudo

Enviado pela primeira vez

26 de outubro de 2026

Enviado pela primeira vez que atendeu aos critérios de CQ

26 de outubro de 2026

Primeira postagem (Real)

30 de outubro de 2026

Atualizações de registro de estudo

Última Atualização Postada (Real)

9 de novembro de 2026

Última atualização enviada que atendeu aos critérios de controle de qualidade

4 de novembro de 2026

Última verificação

1 de novembro de 2026

Mais Informações

Termos relacionados a este estudo

Outros números de identificação do estudo

  • 6/5/2025

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Não

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .