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Could a bladder rinse ease pain after kidney stone surgery?

NCT ID NCT06635889

Symptom relief Sponsor: University of Chicago Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether placing the numbing drug bupivacaine into the bladder after kidney stone surgery can reduce pain and bladder spasms. About 116 adults will be randomly assigned to receive either the drug or a saltwater placebo. The goal is to see if this simple step improves comfort and speeds discharge from the hospital.

What this could mean

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

Active substance
bupivacaine
What this could lead to
If it works, this could offer a simple, low-cost way to reduce pain and speed recovery after common kidney stone surgery.
What could go wrong
This is a small, early-phase trial (116 people) testing a short-term effect. The benefit may be small or no better than placebo, and the drug is only tested for immediate post-op use.

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

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 116 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2025

Expected to finish

Oct 2029

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Provision of signed and dated informed consent form * Stated willingness to comply with all study procedures and availability for the duration of the study. * Male or female, aged ≥ 18 years old. * Diagnosis of nephrolithiasis planned for flexible or semi-rigid ureteroscopy in the treatment of stone disease with ureteral stenting. Exclusion Criteria: * Foley catheterization * History of allergy to bupivacaine * Antegrade ureteroscopy * Transplant or ectopic kidney * Ureteral or bladder reconstruction * Pregnancy (which is a contraindication to elective ureteroscopy) * Dialysis * Surgical complication (significant bleeding, ureteral perforation, significant urothelial damage) * Suspicion of untreated urinary tract infection * History of pelvic radiation * Neurologic disease with a diagnosis of neurogenic bladder dysfunction * History of chronic pain (fibromyalgia, interstitial cystitis, opioid abuse)

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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.

Nephrolithiasis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • The University of Chicago Medical Center

    RECRUITING

    Chicago, Illinois, 60637, United States

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