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Retrograde Intrarenal Surgery clinical trials and research
As of November 12, 2026, Find a Trial lists 4 Retrograde Intrarenal Surgery clinical trials that are recruiting, at sites in 2 countries (most in Egypt (3), Turkey (Türkiye) (1)). By phase: Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 4Clinical trials
- 2Countries
Newest Retrograde Intrarenal Surgery clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Long-term safety of UAS-assisted vs sheathless RIRS in adults with kidney stones | — | Cairo | Recruiting | Aug 17, 2026 |
| Tamsulosin and intraureteral aminophylline to improve ureteral access during primary retrograde intrarenal surgery | Phase 2 | Aswān, Aswan Governorate and 2 other locations | Recruiting | Jun 3, 2026 |
| Improving kidney stone clearance after surgery with home exercises | — | Adıyaman | Recruiting | Jan 28, 2025 |
| Ureteral Drainage After Flexible URS for Kidney Stones: External Catheter vs Internal Stent | — | Cairo | Recruiting | Feb 22, 2023 |
All recruiting trials (4)
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Long-term safety of UAS-assisted vs sheathless RIRS in adults with kidney stones
This study tests whether using a ureteral access sheath during the initial RIRS affects long-term safety and outcomes in adults with kidney stones ≤20 mm.
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Tamsulosin and intraureteral aminophylline to improve ureteral access during primary retrograde intrarenal surgery
This trial tests whether taking tamsulosin before surgery, using aminophylline inside the ureter during the operation, or both, helps place the ureteral access sheath on the first try for adults with small unilateral kidney stones undergoing RIRS.
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Improving kidney stone clearance after surgery with home exercises
This study tests if doing specific exercises at home can help people pass kidney stones more easily after surgery.
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Ureteral Drainage After Flexible URS for Kidney Stones: External Catheter vs Internal Stent
This study tests whether a one-day external ureteral catheter works as well as a standard internal stent after a flexible ureteroscopy for kidney stones in adults.
Related topics
Quick answers
How many Retrograde Intrarenal Surgery clinical trials are recruiting right now?
4, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 2 countries. The most sites are in Egypt (3 trials), Turkey (Türkiye) (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.