Comparison of Reusable and Single-Use Ureteroscopes for the Treatment of Medium-Sized Stones in the Lower Calyx: A Prospective Randomized Study

Abstract

Aim: Single-use flexible ureteroscopes (fURSs) were developed as an alternative in order to eliminate the cost disadvantages of reusable ureteroscopes in the treatment of kidney stones. The objective of this study was to compare single-use and reusable fURSs for the treatment of medium-sized stones in the lower calyx. Material and Methods: The data of patients who underwent retrograde intrarenal surgery (RIRS) for medium-sized stones (10-20) mm in the renal pelvis were analyzed prospectively. The patients were divided into two groups according to the fURS model used during the operation. Uscope PU3022 (Pusen, China) was used as single-use fURS, and Flex X2 (Karl Storz, Germany) as reusable. Failed RIRS following Double-J stent insertion was considered as the first session and each RIRS operation as a separate session. Results: The mean operation time was 20 minutes shorter in the reusable fURS group (5317.4 vs 73.121.6, p< 0.001). The mean number of sessions was less in the reusable fURS group (1.30.46 vs. 1.60.59, p= 0.014). The stone-free rate was similar in both groups (77.5% vs. 72.5, p = 0.606). Discussion: The success rates of reusable and single-use ureteroscopes in the treatment of medium-sized stones in the lower calyx were similar. However, the mean operation time was shorter and the number of sessions was less in the reusable ureteroscopy arm.