PD45-12 COMPARISON OF INTRARENAL PRESSURE DURING RETROGRADE INTRARENAL SURGERY USING VARIOUS SINGLE-USE URETEROSCOPES: AN IN-VITRO STUDY

Abstract

You have accessJournal of UrologyCME1 Apr 2023PD45-12 COMPARISON OF INTRARENAL PRESSURE DURING RETROGRADE INTRARENAL SURGERY USING VARIOUS SINGLE-USE URETEROSCOPES: AN IN-VITRO STUDY Shimpei Yamashita, Ryusuke Deguchi, Yuya Iwahashi, Masatoshi Higuchi, Takaaki Inoue, Yasuo Kohjimoto, and Isao Hara Shimpei YamashitaShimpei Yamashita More articles by this author , Ryusuke DeguchiRyusuke Deguchi More articles by this author , Yuya IwahashiYuya Iwahashi More articles by this author , Masatoshi HiguchiMasatoshi Higuchi More articles by this author , Takaaki InoueTakaaki Inoue More articles by this author , Yasuo KohjimotoYasuo Kohjimoto More articles by this author , and Isao HaraIsao Hara More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003358.12AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Various single-use ureteroscopes (su-URS) have been developed and become commercially available. The difference of scope size could lead to the difference of intrarenal pressure (IRP) during retrograde intrarenal surgery (RIRS). However, no previous study has directly compared IRP among different su-URS. The aim of this in-vitro study was to evaluate IRP during RIRS and compare those among various su-URS. METHODS: We created an artificial kidney model with a pressure sensor by using bladder evacuation device. The model was completely closed and the only back flow was on the side of the ureteroscope inside the ureteral access sheath (UAS) (Figure 1). We tested five su-URS (LithoVue, Wiscope, PU3022A, PU3033A and AXIS) with six different UAS (9.5/11.5Fr-14/16Fr). Using the automatic irrigation system, 30 seconds of irrigation was performed at various pressure (40-180mmHg) and steady state IRP was recorded. Six runs were tested per setting. We compared IRP among five su-URS. The diameter of endoscope tip and shaft were also measured and recorded. RESULTS: The diameter of endoscope tip was smallest in PU3033A, while the diameter of other endoscopes was almost similar. The diameter of endoscope shaft was largest in LithoVue, followed by PU3022A, AXIS, Wiscope and PU3033A. Measured IRP was different among su-URS, and endoscopes with larger shaft diameter tended to have higher IRP (Figure 2). Assuming that the cutoff value of IRP for the risk of postoperative sepsis was 30mmHg, the suitable size of UAS was considered to be 12/14Fr or more for LithoVue and PU3022A, 11/13Fr or more for AXIS and Wiscope and 10/12 Fr or more for PU3033A. CONCLUSIONS: Our results suggested that the size of endoscope shaft might affect IRP during RIRS, and IRP and suitable size of UAS could be different among various su-URS. Source of Funding: None. © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e1167 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Shimpei Yamashita More articles by this author Ryusuke Deguchi More articles by this author Yuya Iwahashi More articles by this author Masatoshi Higuchi More articles by this author Takaaki Inoue More articles by this author Yasuo Kohjimoto More articles by this author Isao Hara More articles by this author Expand All Advertisement PDF downloadLoading ...