Tiny stent, big relief? new study tests smaller stent for less pain after kidney stone surgery

NCT ID NCT06979583

ENROLLING_BY_INVITATION Symptom relief Sponsor: Mayo Clinic Source: ClinicalTrials.gov ↗

First seen Jun 26, 2026 · Last updated Jul 07, 2026 · Updated 3 times

Summary

This study tests whether using a smaller ureteral stent (4.8 Fr instead of 7 Fr) reduces pain and discomfort after kidney stone surgery. About 100 adults who need a stent after surgery will be randomly assigned to one of the two sizes. Patients will report their pain daily until the stent is removed (usually 7–14 days). The goal is to see if a smaller stent leads to less pain and fewer calls to the doctor.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: ureteral stent (4.8 Fr or 7 Fr)
What this could lead to: If it works, this could show that a smaller stent causes less pain and fewer calls to the doctor after kidney stone surgery.
What could go wrong: This is a small, early-stage trial with only 100 people. The difference in pain may be small or not meaningful for everyone.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

nephrolithiasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

RETROGRADE INTRA-RENAL SURGERY URETERAL STENT-RELATED SYMPTOM

Contacts and locations

Locations

Mayo Clinic in Rochester

Rochester, Minnesota, 55905, United States

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