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Tamsulosin With or Without Tadalafil for Trial Without Catheter After Acute Urinary Retention Due to Benign Prostatic Hyperplasia (TAMS-TAD-TWOC)

12 giugno 2026 aggiornato da: Hany Fathy Badawy, MD, Beni-Suef University

Tamsulosin With Versus Without Tadalafil for Trial Without Catheter After Acute Urinary Retention Due to Benign Prostatic Hyperplasia: A Prospective Double-Blind Randomized Trial

Acute urinary retention is a common emergency in men with benign prostatic hyperplasia. After bladder drainage with a urethral catheter, patients usually undergo a trial without catheter to determine whether they can pass urine again without recatheterization.

This study will evaluate whether adding tadalafil 5 mg once daily to tamsulosin 0.4 mg once daily improves the chance of successful trial without catheter in men with first-episode acute urinary retention due to presumed benign prostatic hyperplasia.

Participants will be randomly assigned to receive either tamsulosin plus tadalafil or tamsulosin plus a matching placebo. Study medication will start within 24 hours after catheterization. The catheter will be removed on Day 7. If the first trial without catheter fails, the catheter will be reinserted and a second rescue trial without catheter will be performed on Day 14.

The main outcome is overall catheter-free success by Day 14. Participants will also be followed for recurrent urinary retention, post-void residual urine, urinary flow, catheter-related complications, drug-related adverse events, and the need for benign prostatic hyperplasia-related surgery within 3 months.

Panoramica dello studio

Tipo di studio

Interventistico

Iscrizione (Stimato)

320

Fase

  • Fase 4

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Contatto studio

Luoghi di studio

    • Beni Suweif Governorate
      • Banī Suwayf, Beni Suweif Governorate, Egitto, 02456
        • Reclutamento
        • Department of Urology- Beni-Suef University Hospitals
        • Contatto:
        • Investigatore principale:
          • Hany F Badawy, MD
        • Contatto:

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Descrizione

Inclusion Criteria:

  • Male patient aged 50 years or older.
  • First episode of spontaneous painful acute urinary retention.
  • Successful urethral catheterization at presentation.
  • Drained urine volume at presentation of at least 300 mL.
  • Clinical impression of benign prostatic obstruction or benign prostatic hyperplasia based on history, digital rectal examination, and/or ultrasound evidence of enlarged prostate.
  • Ability to provide written informed consent.

Exclusion Criteria:

  • Previous episode of acute urinary retention.
  • Chronic painless urinary retention phenotype.
  • Active urinary tract infection or sepsis.
  • Gross hematuria with clot retention.
  • Suspected or known urethral stricture.
  • Neurogenic bladder or major neurologic disease affecting voiding.
  • History of prostate cancer or bladder cancer.
  • Previous prostate surgery.
  • Current use of nitrates or guanylate cyclase stimulators.
  • Contraindication to tadalafil or tamsulosin.
  • Severe hypotension or unstable cardiovascular disease.
  • Severe renal impairment.
  • Severe hepatic impairment.
  • Current or recent use of phosphodiesterase type 5 inhibitors before enrollment.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento
  • Assegnazione: Randomizzato
  • Modello interventistico: Assegnazione parallela
  • Mascheramento: Quadruplicare

Armi e interventi

Gruppo di partecipanti / Arm
Intervento / Trattamento
Comparatore placebo: Tamsulosin Plus Placebo
Participants will receive tamsulosin 0.4 mg once daily plus a matching placebo once daily. Treatment will start within 24 hours after urethral catheterization and continue until the Day-7 trial without catheter. Participants who fail the Day-7 trial without catheter will continue the assigned treatment until the rescue trial without catheter on Day 14.
Tamsulosin 0.4 mg will be administered orally once daily as open-label background therapy in both study arms. Treatment will start within 24 hours after urethral catheterization and continue until the scheduled Day-7 trial without catheter. Participants who fail the Day-7 trial without catheter will continue treatment until the rescue trial without catheter on Day 14.
A matching placebo tablet will be administered orally once daily in the placebo comparator arm in addition to open-label tamsulosin 0.4 mg once daily. The placebo will be identical to tadalafil in appearance, packaging, and labeling to maintain blinding.
Sperimentale: Tamsulosin Plus Tadalafil
Participants will receive tamsulosin 0.4 mg once daily plus tadalafil 5 mg once daily. Treatment will start within 24 hours after urethral catheterization and continue until the Day-7 trial without catheter. Participants who fail the Day-7 trial without catheter will continue the assigned treatment until the rescue trial without catheter on Day 14.
Tamsulosin 0.4 mg will be administered orally once daily as open-label background therapy in both study arms. Treatment will start within 24 hours after urethral catheterization and continue until the scheduled Day-7 trial without catheter. Participants who fail the Day-7 trial without catheter will continue treatment until the rescue trial without catheter on Day 14.
Tadalafil 5 mg will be administered orally once daily in the experimental arm in addition to open-label tamsulosin 0.4 mg once daily. Treatment will start within 24 hours after urethral catheterization and continue until the scheduled Day-7 trial without catheter. Participants who fail the Day-7 trial without catheter will continue treatment until the rescue trial without catheter on Day 14.

Cosa sta misurando lo studio?

Misure di risultato primarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Overall Catheter-Free Success by Day 14
Lasso di tempo: Day 14
Proportion of participants who achieve successful spontaneous voiding after either the scheduled Day-7 trial without catheter or the rescue Day-14 trial without catheter. Success is defined as spontaneous voiding after catheter removal, voided volume of at least 100 mL, post-void residual urine less than 150 mL measured within 10-15 minutes after voiding, no recatheterization within 24 hours after the relevant trial without catheter attempt, and remaining catheter-free until Day 14 for participants who initially pass the Day-7 trial without catheter.
Day 14

Misure di risultato secondarie

Misura del risultato
Misura Descrizione
Lasso di tempo
Successful Day-7 Trial Without Catheter
Lasso di tempo: Day 7
Proportion of participants who achieve successful spontaneous voiding after catheter removal on Day 7. Success is defined as spontaneous voiding, voided volume of at least 100 mL, post-void residual urine less than 150 mL measured within 10-15 minutes after voiding, and no recatheterization within 24 hours.
Day 7
Successful Rescue Day-14 Trial Without Catheter Among Day-7 Failures
Lasso di tempo: Day 14
Proportion of participants who fail the Day-7 trial without catheter and subsequently achieve successful rescue trial without catheter on Day 14 using the same predefined success criteria: spontaneous voiding, voided volume of at least 100 mL, post-void residual urine less than 150 mL measured within 10-15 minutes after voiding, and no recatheterization within 24 hours.
Day 14
Recurrent Acute Urinary Retention Within 30 Days
Lasso di tempo: 30 days
Proportion of participants who develop recurrent painful acute urinary retention requiring recatheterization within 30 days after randomization.
30 days
Need for Benign Prostatic Hyperplasia-Related Surgery Within 3 Months
Lasso di tempo: 3 months
Proportion of participants who require surgical intervention for benign prostatic hyperplasia or benign prostatic obstruction within 3 months after randomization.
3 months

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio (Effettivo)

8 giugno 2026

Completamento primario (Stimato)

1 novembre 2027

Completamento dello studio (Stimato)

1 dicembre 2027

Date di iscrizione allo studio

Primo inviato

12 giugno 2026

Primo inviato che soddisfa i criteri di controllo qualità

12 giugno 2026

Primo Inserito (Effettivo)

17 giugno 2026

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Effettivo)

17 giugno 2026

Ultimo aggiornamento inviato che soddisfa i criteri QC

12 giugno 2026

Ultimo verificato

1 giugno 2026

Maggiori informazioni

Termini relativi a questo studio

Piano per i dati dei singoli partecipanti (IPD)

Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?

NO

Descrizione del piano IPD

Individual participant data will not be shared publicly because the study includes individual-level urological and treatment-related clinical data, and participant-level data sharing is not currently included in the ethics approval or informed consent. Only aggregated, de-identified results will be reported in publications or presentations. Any future sharing of de-identified participant-level data would require additional approval from the Research Ethics Committee, Faculty of Medicine, Beni-Suef University, and an appropriate data-sharing agreement.

Informazioni su farmaci e dispositivi, documenti di studio

Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti

No

Studia un dispositivo regolamentato dalla FDA degli Stati Uniti

No

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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