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Study identifier: NCT07283484 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Early Versus Delayed Trial Without Catheter in Men With Acute Urinary Retention.

Condition: Acute Urinary Retention · Benign Prostate Obstruction · Benign Prostate Hyperplasia  ·  Sponsor: Liselot Ribbert

PhaseNA
Planned participants478
Who can joinMale, 18 Years to no upper limit
Healthy volunteersNo

About this study

Acute urinary retention (AUR) is a sudden and painful condition. It occurs when a person is unable to urinate. In men, AUR is most often caused by an enlarged prostate, known as benign prostatic hyperplasia (BPH), which blocks the urethra. The first steps in treatment are to insert a catheter to empty the bladder and to start medication that acts on the prostate (an alpha-blocker). After some time, the catheter is removed during a so-called "Trial Without Catheter" (TWOC) to see whether the patient can urinate normally again. At present, it is unclear how long a catheter should remain in place before this trial is performed. In Dutch hospitals, the duration varies widely: in some hospitals, the catheter is removed after only a few days, while in others it stays in place for two weeks or longer. A longer catheter duration can cause more discomfort and complications, such as urinary tract infections or blood in the urine. Therefore, it is important to determine whether a shorter catheterization period is equally effective and safe compared to a longer one. The RELIEF study investigates whether a short catheter duration of three days is as safe and effective as the current average of fourteen days. A total of 478 men with acute urinary retention will participate in this nationwide randomized controlled trial. All participants will receive a catheter and start (or continue) treatment with an alpha-blocker. They will then be randomly assigned to one of two groups: one group will…

This description comes directly from the study's public registry record.

Talk to the study team

Liselot L.A. Ribbert, MD,. PhD candidate  ·  +31653182448  ·  liselotribbert@hotmail.com

Bart P.W. Witte, MD, PhD  ·  +31886244357  ·  l.p.w.witte@isala.nl

Always discuss trial participation with your own doctor first.

Locations (11)

St. JansdalHarderwijk, Gelderland, NetherlandsNot Yet Recruiting
Canisius Wilhelmina HospitalNijmegen, Gelderland, NetherlandsRecruiting
Zuyderland ZiekenhuisHeerlen, Limburg, NetherlandsNot Yet Recruiting
Maastricht University Medical Center+Maastricht, Limburg, NetherlandsRecruiting
Catharina HospitalEindhoven, North Brabant, NetherlandsRecruiting
OLVGAmsterdam, North Holland, NetherlandsRecruiting
Spaarne GasthuisHoofddorp, North Holland, NetherlandsNot Yet Recruiting
Ziekenhuisgroep TwenteHengelo, Overijssel, NetherlandsNot Yet Recruiting
IsalaZwolle, Overijssel, NetherlandsRecruiting
Martini HospitalGroningen, Provincie Groningen, NetherlandsRecruiting
Alrijne HospitalLeiderdorp, South Holland, NetherlandsRecruiting

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Source record: clinicaltrials.gov/study/NCT07283484