Impact of Ureteral Stent and Sheaths Size on Post-Operative Pain

Launched by MAYO CLINIC · May 13, 2025

Keywords

ClinConnect Summary

This clinical trial is looking at how the size of ureteral stents, which are small tubes placed in the urinary system, affects pain and discomfort after surgery. Specifically, the study will focus on patients who are having a procedure called retrograde intra-renal surgery (RIRS) to treat kidney stones. The goal is to find out if using different sizes of stents can make a difference in how much pain patients feel after their surgery.

To be eligible for this trial, patients need to be between the ages of 65 and 74 and must be undergoing RIRS specifically for stone treatment. However, patients with certain conditions, like injuries during the procedure or those who are pregnant, will not be included. If you participate in the trial, you can expect to have a stent placed after your surgery, and researchers will monitor your pain levels to see how the size of the stent affects your recovery experience. This study is not yet recruiting participants, but it aims to help improve post-operative care for patients undergoing kidney stone surgeries.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • • Patients undergoing a retrograde intra-renal surgery (RIRS) (only patients undergoing the procedure for stone treatment will be included) who will require post-operative indwelling ureteral stent placement on a string at the conclusion of the procedure.
• Exclusion Criteria:
• • Patients with intra-operative ureteral injury who will require ureteral stent for extended time (more than 10 days, in that case a stent without a string will be used).
• • Patient undergoing ureteroscopy for any indication other than stone extraction.
• • Patients who are currently pregnant as determined by clinical presurgical screening.