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Effect of Complete Suction-Induced Collapse of the Renal Collecting System at the End of RIRS on Early Postoperative Outcomes

NCT07535281 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 90

Last updated 2026-04-23

No results posted yet for this study

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.

Conditions

  • Kidney Stones
  • Nephrolithiasis
  • Renal Calculi

Interventions

PROCEDURE

Complete suction-induced collapse

At the end of Retrograde Intrarenal Surgery (RIRS), active suctioning is performed through a suction ureteral access sheath (UAS) until the renal collecting system is visually confirmed to be collapsed.

PROCEDURE

Standard RIRS with natural drainage

Standard Retrograde Intrarenal Surgery (RIRS) procedure is performed. At the end of the surgery, only natural drainage is allowed after stopping irrigation, without any additional active suctioning.

Sponsors & Collaborators

  • Kangdong Sacred Heart Hospital

    lead OTHER

Principal Investigators

  • Han Kyu Chae, M.D., Ph.D. · Department of Urology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Max Age
80 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-20
Primary Completion
2027-09-30
Completion
2027-09-30

Countries

  • South Korea

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07535281 on ClinicalTrials.gov