Comparing postoperative symptoms from different ureteral stents after kidney stone surgery
Official title: Randomized Clinical Trial Evaluating Differences in Postoperative Symptoms With 6Fr Percuflex Ureteral Stents Versus 6Fr Tria Ureteral Stents Versus 4.8Fr Percuflex Ureteral Stents Versus 4.8Fr Tria Ureteral Stents After Laser Lithotripsy of Renal and Ureteral Stones
Run by University of Wisconsin, Madison · NCT06083051 · Data updated 2026-11-12
This study is testing which type of ureteral stent causes fewer problems after kidney stone surgery for people who have had the procedure.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years to 89 Years |
| Sex | All |
| Enrollment | 272 (estimated) |
| Sponsor | University of Wisconsin, Madison Academic / other |
| Locations | 1 site (Madison, Wisconsin) |
| Status | Recruiting |
| Started | March 21, 2024 |
| Main results expected | December 2026 |
| Study ends | December 2026 |
| Registry record updated | June 8, 2026 |
| Trial ID | NCT06083051 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are patients with renal or ureteral urinary stones requiring endoscopic treatment and stent placement.
✕Probably not a fit
Patients who are pregnant, have transplant kidneys, or have other specific medical conditions may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial aims to evaluate the differences in postoperative symptoms experienced by patients who have undergone ureteroscopy with laser lithotripsy for urinary stones, using four types of ureteral stents. A total of 272 participants will be enrolled and monitored for up to 10 weeks, with assessments conducted through the Ureteral Stent Symptom Questionnaire (USSQ) at stent removal and during follow-up visits. Secondary outcomes will include quality of life assessments, emergency room visits, and complications related to the stents. The study is designed to provide insights into which stent type may lead to fewer postoperative symptoms.
Why it matters
Potential benefit: If successful, this study could help identify the ureteral stent that minimizes postoperative discomfort for patients undergoing kidney stone surgery.
How similar studies have gone: Other studies have explored ureteral stents, but this specific comparison of stent types in postoperative symptom management is relatively novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Patients with renal or ureteral urinary stones who require endoscopic treatment and stent placement in the outpatient operating room. Exclusion Criteria: * Pregnant patients * Patients with transplant kidneys * Patients with irreversible coagulopathy * Patients with known ureteral stricture disease * Non-English speaking, vulnerable patients such as lacking of decision-making capability, prisoner, adult unable to consent, will not be enrolled. * Patients with planned staged procedures. * Patients who have stent placed before surgery.
Where it's running
-
University of Wisconsin School of Medicine and Public Health
Madison, Wisconsin, United States Recruiting
Study contacts
- Principal investigator: Ali Antar, MD — University of Wisconsin, Madison
- Study coordinator: Shuang Li
- Email: lis@urology.wisc.edu
- Phone: 608.263.8336
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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.