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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 juni 2026 bijgewerkt door: 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.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Studietype

Ingrijpend

Inschrijving (Geschat)

320

Fase

  • Fase 4

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Locaties

  • Egypte
    • Beni Suweif Governorate
      • Banī Suwayf, Beni Suweif Governorate, Egypte, 02456
        • Werving
        • Department of Urology- Beni-Suef University Hospitals
        • Contact:
        • Hoofdonderzoeker:
          • Hany F Badawy, MD
        • Contact:

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

  • Volwassen
  • Oudere volwassene

Accepteert gezonde vrijwilligers

Nee

Beschrijving

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.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Primair doel: Behandeling
  • Toewijzing: Gerandomiseerd
  • Interventioneel model: Parallelle opdracht
  • Masker: Verviervoudigen

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Placebo-vergelijker: 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.
Geneesmiddel: Tamsulosin
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.
Geneesmiddel: Tadalafil Placebo
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.
Experimenteel: 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.
Geneesmiddel: Tamsulosin
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.
Geneesmiddel: Tadalafil
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.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Overall Catheter-Free Success by Day 14
Tijdsspanne: 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

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Successful Day-7 Trial Without Catheter
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 3 months
Proportion of participants who require surgical intervention for benign prostatic hyperplasia or benign prostatic obstruction within 3 months after randomization.
3 months

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Beni-Suef University

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Werkelijk)

8 juni 2026

Primaire voltooiing (Geschat)

1 november 2027

Studie voltooiing (Geschat)

1 december 2027

Studieregistratiedata

Eerst ingediend

12 juni 2026

Eerst ingediend dat voldeed aan de QC-criteria

12 juni 2026

Eerst geplaatst (Werkelijk)

17 juni 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

17 juni 2026

Laatste update ingediend die voldeed aan QC-criteria

12 juni 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • BSU FMBSUREC07062026CBADAWY

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

NEE

Beschrijving IPD-plan

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.

Informatie over medicijnen en apparaten, studiedocumenten

Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel

Nee

Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct

Nee

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .

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