Stent versus no stent after ureteroscopy for ureteral stones
Official title: Prospective Randomized Study on the Necessity of Postoperative Stenting After Ureteroscopy (URS) for Ureteral Stones.
Run by Kantonsspital Baden · NCT07283003 · Data updated 2026-11-12
This study will see if leaving a double-J stent in after ureteroscopy reduces postoperative pain and complications compared with not placing a stent in adults treated for ureteral stones.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 60 (estimated) |
| Sponsor | Kantonsspital Baden Academic / other |
| Locations | 1 site (Baden) |
| Status | Recruiting |
| Started | January 8, 2026 |
| Main results expected | September 2027 |
| Study ends | September 2027 |
| Registry record updated | February 17, 2026 |
| Trial ID | NCT07283003 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults (18+) scheduled for ureteroscopy and stone removal who have provided informed consent and meet pre-stenting criteria are ideal candidates.
✕Probably not a fit
Patients with complex ureteral conditions, impacted stones, a solitary kidney, significant renal stones (>3 mm), prior ureteral surgeries (other than endoscopic stone treatments), or pregnancy are unlikely to benefit from omission of a stent.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults undergoing ureteroscopy for ureteral stone removal will be assigned to either receive a double-J ureteral stent after the procedure or to have no stent placed. Postoperative pain, stent-related urinary symptoms, and complication rates such as colic or infection will be tracked, with pain recorded using standardized measures and a pain-tracking app. The trial compares the necessity of routine stenting against potential harms from stent discomfort to determine whether routine placement can be safely omitted in selected patients. Results will inform whether avoiding routine stents improves patient comfort without increasing risk.
Why it matters
Potential benefit: If successful, the study could reduce unnecessary stent placements and related discomfort while keeping complication rates low, improving postoperative quality of life.
How similar studies have gone: Previous studies have shown mixed results; avoiding routine stenting has been safe in selected uncomplicated cases but overall evidence remains limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age 18 years or older * Patients with ureteral stones scheduled for ureteroscopy (URS) and stone removal * Previous pre-stenting * Informed Consent as documented Exclusion Criteria: * Complex ureteral conditions (e.g., known ureteral strictures) * Impacted stones * Solitary kidney * Patients with significant renal stones (\>3mm) * Previous ureteral surgeries (except endoscopic stone treatments) * Pregnancy or suspected pregnancy
Where it's running
-
Kantonsspital Baden AG
Baden, Switzerland Recruiting
Study contacts
- Principal investigator: Lukas John Hefermehl, PD Dr. med. — Kantonsspital Baden AG
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.