Effect of Complete Suction-Induced Collapse of the Renal Collecting System at the End of RIRS on … (NCT07535281) | Clinical Trial Compass
RecruitingNot Applicable
Effect of Complete Suction-Induced Collapse of the Renal Collecting System at the End of RIRS on Early Postoperative Outcomes
South Korea90 participantsStarted 2026-04-20
Plain-language summary
The purpose of this study is to evaluate whether actively suctioning the renal collecting system to induce a "collapse" state at the end of retrograde intrarenal surgery (RIRS) can reduce postoperative pain and infection in patients with kidney stones. Participants will be randomly assigned to either the experimental group (suction-induced collapse) or the control group (standard drainage). The study aims to determine if this simple surgical modification can improve early recovery outcomes and patient satisfaction.
Who can participate
Age range
20 Years – 80 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Patients aged 20 to 80 years.
* Patients diagnosed with kidney stones and scheduled for retrograde intrarenal surgery (RIRS).
* Patients who have voluntarily signed the written informed consent form
Exclusion Criteria:
* Participation in another clinical trial (drug or device) within 1 month prior to enrollment.
* Congenital abnormalities of the urinary or reproductive system.
* Presence of a pre-placed ureteral stent (pre-stenting) at the time of surgery.
* Solitary kidney.
* Uncontrolled urinary tract infection.
* History of ureteral reconstruction on the affected side.
* Pregnancy.
* Uncorrectable bleeding diathesis or ongoing therapeutic anticoagulation therapy.
* Contraindications to general anesthesia.
* Other conditions that the investigator deems inappropriate for participation in the study.
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Postoperative flank pain intensity
Timeframe: Within 1 hour after arrival in the post-anesthesia care unit (PACU)