Evaluating Postoperative Pain After Ureterorenoscopy.

Last updated: February 15, 2026
Sponsor: Lukas J Hefermehl
Overall Status: Active - Recruiting

Phase

N/A

Condition

Kidney Stones

Treatment

No Double-J catheter insertion

Double-J catheter

Clinical Study ID

NCT07283003
2025-00665
  • Ages > 18
  • All Genders

Study Summary

Comparison of routine postoperative stenting versus no stenting after ureterorenoscopy for ureteral stones to assess the necessity and impact on complication risk.

Eligibility Criteria

Inclusion

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

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

Study Design

Total Participants: 60
Treatment Group(s): 2
Primary Treatment: No Double-J catheter insertion
Phase:
Study Start date:
January 08, 2026
Estimated Completion Date:
September 30, 2027

Study Description

After a ureteroscopy (URS) for the removal of ureteral stones, a double-J stent is routinely placed. Among other measures, this is intended to prevent pain caused by ureteral swelling, small residual fragments, blood clots, and potential drainage obstructions, which could lead to colic or fever. However, the evidence supporting the benefit of this practice is limited. At the same time, many patients report discomfort due to the stent (e.g., flank pain, dysuria, frequent urination, hematuria), which can significantly impact their quality of life.

Connect with a study center

  • Kantonsspital Baden AG

    Baden 2661646, 5404
    Switzerland

    Active - Recruiting

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