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Tamsulosin Dose Escalation or Silodosin Switch Before Trial Without Catheter in BPH-Related Acute Urinary Retention

11 juni 2026 bijgewerkt door: Hany Fathy Badawy, MD, Beni-Suef University

Tamsulosin 0.4 mg Continuation Versus Dose Escalation to 0.8 mg Versus Switch to Silodosin 8 mg for Trial Without Catheter After Acute Urinary Retention Due to Benign Prostatic Hyperplasia: A Randomized Controlled Trial

This randomized controlled trial will compare three medication strategies before trial without catheter in men with acute urinary retention due to benign prostatic hyperplasia who were already taking tamsulosin 0.4 mg once daily before the retention episode. After urethral catheterization, eligible participants will be randomly assigned to one of three groups for 7 days: continuation of tamsulosin 0.4 mg once daily, escalation to tamsulosin 0.8 mg once daily, or switching to silodosin 8 mg once daily. The urethral catheter will be removed on Day 7, and the ability to void successfully without re-catheterization will be assessed. Follow-up will continue to Day 30, with additional recording of catheter-free status, recurrent urinary retention, urinary flow, post-void residual urine, symptom scores, adverse drug events, catheter-related complications, and the need for later benign prostatic hyperplasia-related surgery.

Studie Overzicht

Toestand

Werving

Conditie

Interventie / Behandeling

Gedetailleerde beschrijving

Acute urinary retention is a common emergency complication of benign prostatic hyperplasia. Standard management includes immediate bladder decompression by urethral catheterization followed by alpha-blocker therapy before attempting catheter removal. However, the optimal management strategy is unclear in men who develop acute urinary retention despite already receiving standard-dose tamsulosin 0.4 mg once daily.

This trial is designed to evaluate whether continuing tamsulosin 0.4 mg, increasing the dose to tamsulosin 0.8 mg, or switching to silodosin 8 mg provides better clinical outcomes before trial without catheter. Eligible men aged 50 years or older with painful acute urinary retention presumed to be secondary to benign prostatic enlargement or obstruction, and who were already taking tamsulosin 0.4 mg once daily for at least 4 weeks before the retention episode, will be enrolled after successful urethral catheterization and written informed consent.

Participants will be randomized in a 1:1:1 ratio to one of three parallel treatment arms. The assigned medication will be given for 7 days while the urethral catheter remains in place. On Day 7, the catheter will be removed in the outpatient urology clinic. Trial without catheter success will be assessed using a predefined clinical definition based on spontaneous voiding, voided volume, post-void residual urine measured by ultrasound, absence of clinically significant voiding difficulty, and no need for re-catheterization within 24 hours.

Participants will be followed until Day 30 for urinary outcomes and safety assessment. The study will also record adverse drug events and catheter-related complications. Participants who fail the Day-7 trial without catheter will be managed according to standard clinical care, including re-catheterization and possible rescue trial without catheter or further benign prostatic hyperplasia management according to clinical judgment.

Studietype

Ingrijpend

Inschrijving (Geschat)

378

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 Contact Back-up

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
        • Hoofdonderzoeker:
          • Ahmed M Elsherif, MD
        • Hoofdonderzoeker:
          • Mohamed M Dogha, MD

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 patients aged 50 years or older.
  • Acute urinary retention requiring urethral catheterization.
  • Presumed acute urinary retention secondary to benign prostatic enlargement or benign prostatic obstruction.
  • Already receiving tamsulosin 0.4 mg once daily for at least 4 weeks before the acute urinary retention episode.
  • Successful urethral catheterization at presentation.
  • Initial catheterized urine volume ≤1000 mL, with a clinical presentation consistent with painful acute urinary retention.
  • Prostate enlargement on ultrasound or clinical assessment consistent with benign prostatic hyperplasia or benign prostatic obstruction.
  • Ability to provide written informed consent.

Exclusion Criteria:

  • Known or suspected prostate cancer.
  • Previous prostate surgery.
  • Previous urethral stricture disease or urethral surgery.
  • Neurogenic bladder or known neurological disease affecting voiding.
  • Chronic urinary retention rather than acute painful retention.
  • Acute urinary retention due to non-BPH causes, including clot retention, bladder stone obstruction, acute prostatitis, urethral trauma, or drug-induced retention.
  • Severe urinary tract infection, sepsis, or fever at presentation.
  • Gross hematuria requiring irrigation.
  • Failed urethral catheterization or need for suprapubic catheterization.
  • Current use of silodosin, alfuzosin, doxazosin, terazosin, tadalafil, anticholinergics, beta-3 agonists, or other drugs that may significantly affect voiding.
  • Severe renal impairment requiring urgent intervention.
  • Symptomatic postural hypotension or recurrent syncope.
  • Known hypersensitivity to silodosin.
  • Severe hepatic impairment.
  • Inability to comply with follow-up.

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: Enkel

Wapens en interventies

Deelnemersgroep / Arm
Interventie / Behandeling
Actieve vergelijker: Tamsulosin 0.4 mg Continuation
Participants will continue tamsulosin 0.4 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.
Geneesmiddel: Tamsulosin 0.4 mg
Participants assigned to this intervention will continue tamsulosin 0.4 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.
Experimenteel: Tamsulosin 0.8 mg Dose Escalation
Participants will receive tamsulosin 0.8 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.
Geneesmiddel: Tamsulosin 0.8 mg
Participants assigned to this intervention will receive tamsulosin 0.8 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.
Experimenteel: Switch to Silodosin 8 mg
Participants will stop tamsulosin 0.4 mg and switch to silodosin 8 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.
Geneesmiddel: Silodosin 8 mg
Participants assigned to this intervention will stop tamsulosin 0.4 mg and switch to silodosin 8 mg once daily for 7 days during urethral catheterization before Trial Without Catheter at Day 7.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Successful Trial Without Catheter at Day 7
Tijdsspanne: Day 7, with assessment continuing for 24 hours after catheter removal
Proportion of participants with successful Trial Without Catheter at Day 7. Success is defined as spontaneous voiding within 6 hours after urethral catheter removal, voided volume ≥100 mL, post-void residual urine <150 mL measured by ultrasound within 10-15 minutes after voiding, no painful bladder distension or clinically significant voiding difficulty requiring immediate re-catheterization, and no need for re-catheterization within 24 hours after catheter removal.
Day 7, with assessment continuing for 24 hours after catheter removal

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Catheter-Free Status at Day 14
Tijdsspanne: Day 14
Proportion of participants who are free from an indwelling urinary catheter at Day 14 after randomization, including participants who undergo rescue Trial Without Catheter after initial Day-7 failure.
Day 14
Recurrent Acute Urinary Retention Within 30 Days
Tijdsspanne: Up to 30 days
Proportion of participants who develop recurrent acute urinary retention requiring re-catheterization after initially successful Trial Without Catheter.
Up to 30 days
Adverse Drug Events
Tijdsspanne: Up to 30 days
Proportion of participants with adverse drug events, including dizziness, postural hypotension, syncope, headache, nasal congestion, abnormal ejaculation, diarrhea, allergic reaction, or other clinically significant drug-related adverse events.
Up to 30 days

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 mei 2027

Studie voltooiing (Geschat)

1 juni 2027

Studieregistratiedata

Eerst ingediend

11 juni 2026

Eerst ingediend dat voldeed aan de QC-criteria

11 juni 2026

Eerst geplaatst (Werkelijk)

16 juni 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

16 juni 2026

Laatste update ingediend die voldeed aan QC-criteria

11 juni 2026

Laatst geverifieerd

1 juni 2026

Meer informatie

Termen gerelateerd aan deze studie

Trefwoorden

Aanvullende relevante MeSH-voorwaarden

Andere studie-ID-nummers

  • TAMS-TWOC-2026

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 because the study includes individual-level clinical data related to acute urinary retention, medication exposure, catheterization, follow-up outcomes, and adverse events. 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.

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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