COMPARATIVE ANALYSIS OF RIRS SCORING SYSTEM AND RESORLU UNSAL STONE SCORE (RUSS) FOR PREDICTING STONE-FREE RATE AFTER RETROGRADE INTRARENAL SURGERY: A PROSPECTIVE COHORT STUDY sachinupreti89@gmail.com

 

COMPARATIVE ANALYSIS OF RIRS SCORING SYSTEM AND RESORLU UNSAL STONE SCORE (RUSS) FOR PREDICTING STONE-FREE RATE AFTER RETROGRADE INTRARENAL SURGERY: A PROSPECTIVE COHORT STUDY

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Nepal

Poster with Discussion

In order to inform clinical decision-making and give patients reasonable expectations regarding total stone clearance and the possible need for additional interventions, this study compares the Resorlu Unsal Stone Score (RUSS) and the RIRS Scoring System in predicting stone-free rates following retrograde intrarenal surgery.

Patients undergoing RIRS over a 12-month period in the Department of Urology and Kidney Transplant Surgery were included in this prospective cohort study. RUSS and RIRS scores before to surgery were computed. Intraoperative variables were recorded, such as the length of the procedure, the laser time, any problems, and any remaining stones (fluorescence on JBFS). On the first POD, the DJ stent location and stone clearance were evaluated, and the stent was removed after two weeks. At four weeks, the final stone-free status was assessed by USG and X-ray KUB. SPSS 24 was used to analyze the data.

Sixty RIRS patients (mean age 38.22 ± 11.60 years; 70% male) were included in the study. According to the RIRS score, the sensitivity was 70%, the specificity was 75%, and the AUC was 0.762 (P < 0.001; 95% CI: 0.637–0.887). The RUSS score exhibited a sensitivity of 85%, specificity of 70%, and an AUC of 0.751 (P < 0.001; 95% CI: 0.606–0.897).

In 60 RIRS patients (mean age 38.22 ± 11.60 years; 70% male), the RIRS score (AUC 0.762) and RUSS score (AUC 0.751) demonstrated significant predictive accuracy for stone-free rates with good sensitivity and specificity.