MP05-18 FLUID TEMPERATURE EFFECT ON SUPERPULSE THULIUM FIBER LASER STONE ABLATION

Abstract

You have accessJournal of UrologyCME1 Apr 2023MP05-18 FLUID TEMPERATURE EFFECT ON SUPERPULSE THULIUM FIBER LASER STONE ABLATION Kalon L. Morgan, Andrei D. Cumpanas, Nittesh Katta, Rohit Bhatt, Antonio R. H. Gorgen, Allen Rojhani, Paul Piedras, Seyed Amiryaghoub Lavasani, Zachary E. Tano, Sohrab N. Ali, Pengbo Jiang, Roshan M. Patel, Thomas Milner, Jaime Landman, and Ralph V. Clayman Kalon L. MorganKalon L. Morgan More articles by this author , Andrei D. CumpanasAndrei D. Cumpanas More articles by this author , Nittesh KattaNittesh Katta More articles by this author , Rohit BhattRohit Bhatt More articles by this author , Antonio R. H. GorgenAntonio R. H. Gorgen More articles by this author , Allen RojhaniAllen Rojhani More articles by this author , Paul PiedrasPaul Piedras More articles by this author , Seyed Amiryaghoub LavasaniSeyed Amiryaghoub Lavasani More articles by this author , Zachary E. TanoZachary E. Tano More articles by this author , Sohrab N. AliSohrab N. Ali More articles by this author , Pengbo JiangPengbo Jiang More articles by this author , Roshan M. PatelRoshan M. Patel More articles by this author , Thomas MilnerThomas Milner More articles by this author , Jaime LandmanJaime Landman More articles by this author , and Ralph V. ClaymanRalph V. Clayman More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000003216.18AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: The absorption coefficient measures the energy lost to the medium through which a laser beam passes. Prior mid-infrared laser studies have shown that as the temperature of the medium increases, there is less loss of energy into the medium. Accordingly, we evaluated the impact of irrigation temperature on the amount of stone ablation when using the superpulse Thulium fiber laser (sTFL). METHODS: Optical coherence tomography (OCT), a non-invasive, high-resolution imaging technique, was used to generate a detailed surface image during single pulse sTFL lithotripsy (0.5 J, 1.0 Hz, 1.25 ms) of 12 samples of each of the following stone compositions: calcium oxalate monohydrate (COM), calcium oxalate dihydrate (COD), and uric acid (UA). Stones were immersed in either room temperature (20°C) or body temperature (37°C) 0.9% saline. With the tip of a 200 µm laser fiber in contact with the stone, a single pulse was applied at two separate sites on each stone. OCT determined the volume of stone removed per each laser pulse. Data were evaluated using an unpaired t-test (Figure 1) (Table 1). RESULTS: Regardless of stone composition, the mean volume of stone ablated during sTFL at 37°C was significantly greater than at room temperature. The single pulse of the sTFL ablated 12.4%, 24.4% and 28.6% more stone at 37°C irrigation for COM stones (p=0.034), COD stones (p=0.014) and UA stones (p=0.007), respectively (Table 1). CONCLUSIONS: sTFL efficiency in ablating COM, COD, and UA stones is enhanced when using irrigation warmed to 37°C. Source of Funding: None © 2023 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 209Issue Supplement 4April 2023Page: e51 Advertisement Copyright & Permissions© 2023 by American Urological Association Education and Research, Inc.MetricsAuthor Information Kalon L. Morgan More articles by this author Andrei D. Cumpanas More articles by this author Nittesh Katta More articles by this author Rohit Bhatt More articles by this author Antonio R. H. Gorgen More articles by this author Allen Rojhani More articles by this author Paul Piedras More articles by this author Seyed Amiryaghoub Lavasani More articles by this author Zachary E. Tano More articles by this author Sohrab N. Ali More articles by this author Pengbo Jiang More articles by this author Roshan M. Patel More articles by this author Thomas Milner More articles by this author Jaime Landman More articles by this author Ralph V. Clayman More articles by this author Expand All Advertisement PDF downloadLoading ...