No stent vs. short stent vs. standard stent: which is best after kidney stone removal?
NCT ID NCT07616505
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study compares three approaches to ureteral stenting after kidney stone surgery: no stent, a stent removed after 1 week, and a stent removed after 2 weeks. Researchers will track complications, patient comfort, and recovery in 90 adults with upper urinary tract stones. The goal is to find the safest and most comfortable strategy to improve recovery and quality of life.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help doctors choose the best stenting strategy to reduce complications and improve recovery after kidney stone surgery.
- What could go wrong
- This is a small, early-stage study with only 90 participants, so results may not apply to all patients. The best approach may vary by individual case.
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
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 90 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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May 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide 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: * Aged ≥18 years; diagnosed with unilateral upper urinary tract calculi (ureteral calculi or renal pelvic/calyceal calculi, diameter ≤2 cm) by computed tomography (CT) or ultrasonography. Scheduled for ureteroscopic lithotripsy (URL), including rigid or flexible ureteroscopy. Exclusion Criteria: * Patients undergoing bilateral surgery. Pregnant or lactating women. Patients with pre-existing ureteral stents at the time of ureteroscopy. Patients with anatomical abnormalities (e.g., horseshoe kidney, pelvic kidney, solitary kidney) or renal transplant recipients. Patients with systemic infectious manifestations. Patients unable to provide informed consent. Patients with uncontrolled coagulopathy, severe preoperative hydronephrosis or pyonephrosis. Patients with incomplete clearance of stone fragments during primary ureteroscopic lithotripsy (URSL).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
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