Retrospective Analysis of 90 Patients that Underwent Retrograde Intrarenal Surgery

Abstract

INTRODUCTION: To evaluate the results of retrograde intrarenal surgery (RIRC) performed in our clinic in cases with renal stones. METHODS: The results of 90 patients that underwent RIRC between June 2016 and January 2019 were evaluated retrospectively. The demographic data and the preoperative and postoperative clinical characteristics of the patients were examined. RESULTS: The mean age of 90 patients that underwent RIRC (41 men/49 women) was 43.35 (21-84) years, and the mean stone size was 16.22 (10-28) mm. The operation was performed under general anesthesia in 38 patients (42.22%) and spinal anesthesia in 52 (57.78%). The mean operation duration was 61.76 (30-115) min, and the mean stone fragmentation time was 48.33 (15-95) min. In 23 patients (25.55%), a double-J stent was inserted into the ureter since the kidney could not be reached due to stenosis. In 75 patients (83.33%), a double-J stent was placed at the end of the operation. The mean hospital stay was 1.08 (1-3) days. The stone-free rate was 71.12%. Of the cases with residual stones, 21 (23.32%) underwent an additional intervention and five (5.55%) were followed up without further intervention. Complications were observed in 13 patients (14.44%) and evaluated according to the modified Clavien classification. DISCUSSION AND CONCLUSION: In the presence of adequate equipment and experience, RIRC is an effective and safe procedure with high success, low complication and minimal morbidity rates in the treatment of renal stones.

Keywords

• renal stone
• retrograde intrarenal surgery
• flexible ureteroscopy