Skip to content

RELIEF study

Early Versus Delayed Trial Without Catheter in Men with Acute Urinary Retention: a Randomized Controlled Trial - RELIEF

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
NL-OMON
Registry ID
NL-OMON57836
Enrollment
478
Registered
2025-02-07
Start date
2025-08-21
Completion date
Unknown
Last updated
2026-06-15

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute urinary retention due to benign prostate hyperplasia (BPH) Sudden inability to urinate caused by benign prostatic enlargement

Interventions

Intervention: TWOC on day 3. Control: TWOC on day 14.

Sponsors

Isala
Lead Sponsor

Eligibility

Age
18 Years to 99 Years

Inclusion criteria

Inclusion criteria:  Adult man;Diagnosed with acute urinary retention (AUR( treated with a transurethral catheter (TUC) and alpha-blocker therapy;Mentally competent and understanding of benefits and potential burden of the study;Written or digital informed consent.

Exclusion criteria

Exclusion criteria: A failed prior TWOC, urinary retention >1500ml, usage of an alpha-blocker other than tamsulosin, silodosin or alfuzosin, neurogenic bladder dysfunction (e.g. multiple sclerosis, spinal cord injury, spina bifida, vertebral disc prolapse), history of prostate cancer (ISUP grade group = 2), active bladder cancer or undergoing follow-up for bladder cancer, urinary retention following surgery (within 72 hours post-operation), history of lower urinary tract surgery (e.g., bladder augmentation, urethral surgery, prostate surgery), bladder stones, suspected urethral stricture, clot retention, urosepsis or a contra-indication for alpha blocker therapy. 

Design outcomes

Primary

MeasureTime frame
Re-catheterization rate immediately after TWOC (success vs. failure of spontaneous voiding).

Secondary

MeasureTime frame
Patient-centered outcomes (symptoms, QoL), complications, and both healthcare and societal costs.

Countries

Netherlands

Contacts

Public ContactL.L.A. Ribbert

Isala

l.l.a.ribbert@umcg.nl+31653182448

Outcome results

None listed

Source: NL-OMON (via WHO ICTRP) · Data processed: Aug 8, 2026