PD54-07 THULIUM FIBER LASER RESULTS IN SHORTER OPERATING TIMES DURING URETEROSCOPY AND LASER LITHOTRIPSY

Abstract

You have accessJournal of UrologyStone Disease: Surgical Therapy IV (PD54)1 Sep 2021PD54-07 THULIUM FIBER LASER RESULTS IN SHORTER OPERATING TIMES DURING URETEROSCOPY AND LASER LITHOTRIPSY James R. Ryan, Mitchell H. Nguyen, Joshua A. Linscott, Samuel W. Nowicki, Brian M. Jumper, and Johann P. Ingimarsson James R. RyanJames R. Ryan More articles by this author , Mitchell H. NguyenMitchell H. Nguyen More articles by this author , Joshua A. LinscottJoshua A. Linscott More articles by this author , Samuel W. NowickiSamuel W. Nowicki More articles by this author , Brian M. JumperBrian M. Jumper More articles by this author , and Johann P. IngimarssonJohann P. Ingimarsson More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002081.07AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Ureteroscopy (URS) procedure duration has been associated with complications such as ureteral perforation and urosepsis, as well as higher costs. A new FDA approved lithotripter, the thulium fiber laser (TFL), was made commercially available in June of 2020 and was acquired by our institution. This retrospective study was designed to determine if TFL lithotripsy decreased operative time when compared to standard Holmium:YAG (Hol:YAG) lithotripsy without pulse modulation. METHODS: A retrospective review of URS with laser lithotripsy at a tertiary stone center was conducted for cases performed 2 months before and 2 months after conversion to TFL lasers for URS. 152 procedures were identified. Cases that involved bilateral procedures, aberrant anatomy, had no recorded kidney stone composition, and those that were aborted due to complications or tight ureters were excluded from analysis. 102 cases met inclusion criteria, 51 in each arm. Operative time was measured from scope in to scope out. Variables including stone size, location, chemical composition, prior ureteral stenting and ureteral access sheath use were recorded. In cases with 2 or more stones, the cumulative stone diameter was measured from pre-op CT imaging and reported as the summation of diameters from all treated stones. RESULTS: Baseline characteristics of the patients and stones treated did not differ significantly between laser groups (table 1). Compared to Hol:YAG, use of TFL resulted in an average decrease of 12.94 minutes per case (p=.021, 95% CI [2.03-23.85]). In subgroup analysis of cases with cumulative stone diameter less than 15mm, the difference was 13.95 minutes (p=.007, CI [3.95-23.95]). For cases less than 10mm, the mean difference was 17.27 minutes in favor of TFL (p=.002, 95% CI [6.89-27.62]). Stone free states confirmed by retroperitoneal ultrasound were similar between groups but could not be reliably estimated due to low (36%) compliance with post op imaging in the COVID era. CONCLUSIONS: TFL is a substantially faster means of laser lithotripsy than Hol:YAG with average case time reduced by 20% overall (13 min). As the number of URS laser lithotripsy procedures being performed in the United States continues to increase, reducing procedure times has the potential to improve patient outcomes and decrease costs. Longer term follow up is needed to see if recurrence rates are affected. Source of Funding: The authors received no specific funding for this work © 2021 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e925-e925 Advertisement Copyright & Permissions© 2021 by American Urological Association Education and Research, Inc.MetricsAuthor Information James R. Ryan More articles by this author Mitchell H. Nguyen More articles by this author Joshua A. Linscott More articles by this author Samuel W. Nowicki More articles by this author Brian M. Jumper More articles by this author Johann P. Ingimarsson More articles by this author Expand All Advertisement Loading ...