Comparative Analysis of RIRS Scoring System and Resorlu Unsal Stone Score (RUSS) for Predicting Stone-free Rate After Retrograde Intrarenal Surgery

NCT ID: NCT07026721

Last Updated: 2025-06-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

60 participants

Study Classification

OBSERVATIONAL

Study Start Date

2024-01-01

Study Completion Date

2024-12-29

Brief Summary

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Several studies have investigated the use of scoring systems for predicting stone-free rates after RIRS. Previous research has evaluated the RIRS Scoring System, RUSS, and other similar systems in different patient populations. This study was conducted to compare RIRS scoring system and Resorlu Unsal Stone Score (RUSS) for predicting stone free rate.

Detailed Description

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Conditions

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Renal Stones

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Interventions

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Retrograde intrarenal surgery (RIRS)

The intervention involves Retrograde Intrarenal Surgery (RIRS) performed using a flexible ureteroscope to access the renal collecting system via a retrograde (urethra → bladder → ureter → kidney) approach. Stones are fragmented using a holmium:YAG laser, with or without the use of a ureteral access sheath, depending on the case.

What distinguishes this intervention from others is the integration of preoperative scoring systems-specifically the RIRS Scoring System and the Resorlu Unsal Stone Score (RUSS)-to predict stone-free outcomes and guide case selection and surgical planning. Additionally, all procedures are performed by experienced endourologists following a standardized protocol, including consistent patient positioning, anesthesia, access technique, and post-operative imaging at defined intervals to assess outcomes.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* patients more than 18 years of age undergoing RIRS for renal stone
* providing informed written consent

Exclusion Criteria

* Previous renal and ureteric surgeries
* coexisting bladder, ureteral stone
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Maharajgunj Medical Campus

OTHER

Sponsor Role lead

Responsible Party

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Prajjwol Luitel

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Saro Prajapati, MBBS, MS

Role: STUDY_DIRECTOR

Department of General Surgery Maharajgunj Medical Campus Institute of Medicine, Tribhuvan University

Locations

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Department of Urology and Kidney Transplant Surgery, Tribhuvan University Teaching Hospital (TUTH), Maharajgunj, Kathmandu, Nepal

Kathmandu, Bagmati, Nepal

Site Status

Countries

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Nepal

Other Identifiers

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407(6-11)E2.080.081

Identifier Type: -

Identifier Source: org_study_id

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