2174 the influence of increased maximum power output on the outcome of photoselective vaporization of the prostate with the greenlight laser - three-year results of a comparison between the 80-w ktp and the 120-w hps-laser

You have accessJournal of UrologyBenign Prostatic Hyperplasia: Surgical Therapy and New Technology III1 Apr 20122174 THE INFLUENCE OF INCREASED MAXIMUM POWER OUTPUT ON THE OUTCOME OF PHOTOSELECTIVE VAPORIZATION OF THE PROSTATE WITH THE GREENLIGHT LASER - THREE-YEAR RESULTS OF A COMPARISON BETWEEN THE 80-W KTP AND THE 120-W HPS-LASER Malte Rieken, Gernot Bonkat, Georg Mueller, Stephen Wyler, Thomas Gasser, and Alexander Bachmann Malte RiekenMalte Rieken Basel, Switzerland More articles by this author , Gernot BonkatGernot Bonkat Basel, Switzerland More articles by this author , Georg MuellerGeorg Mueller Basel, Switzerland More articles by this author , Stephen WylerStephen Wyler Basel, Switzerland More articles by this author , Thomas GasserThomas Gasser Basel, Switzerland More articles by this author , and Alexander BachmannAlexander Bachmann Basel, Switzerland More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2012.02.2347AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Since the introduction of the GreenLight laser for photoselective vaporization of the prostate (PVP), different laser types with increased maximum power output (80-W, 120-W and 180-W) and modified fibers were developed. Data concerning the impact of these changes on clinical results of PVP are scarce. We investigated the long-term effect of increased maximum power on the outcome of PVP with the 80-W and 120-W system. METHODS Data from the last 200 patients who underwent PVP with the 80-W laser between 10/2005 and 04/2007 were compared with the first 200 patients who underwent PVP with the 120-W laser between 05/2007 and 11/2008. Perioperative parameters, intra- and postoperative complications and the functional outcome up to 36 months were analyzed. RESULTS Patients matched in age, preoperative PSA, prostate volume, voiding symptoms (IPSS, QoL) and micturition parameters (Q max, postvoid residual volume (PVR)). Operating time (67 ± 23min vs. 58 ± 32min, ns), energy application (193 ± 79kJ vs. 198 ± 118kJ, ns) and duration of hospitalization (5.9 ± 3.5d vs. 5.7 ± 3.2d, ns) were comparable between the 80-W and the 120-W group. Intraoperative bleeding (21,2% vs. 6.4%, p< 0.001), primarily leading to impaired visibility occured more frequently when PVP was performed with the 120-W laser. During 36-month follow-up voiding symptoms (IPSS, QoL) and micturition parameters (Q max, PVR) improved significantly within both groups. No statistically significant differences were detected between the two groups. Furthermore, PSA-reduction was comparable between both groups. Reoperation rate was 11% after 80-W compared to 6% after 120-W (ns) due to urethral stricture (1% vs. 0%, ns), bladder neck sclerosis (3% vs. 1.5%, ns) and recurrent or persisting adenoma (7% vs. 4.5%, ns). CONCLUSIONS Both laser systems lead to a comparable and significant improvement of voiding parameters and micturition symptoms. Regardless of the lower reoperation rate in the 120-W group, no significant influence of the increase in maximum power on the outcome of PVP could be detected. © 2012 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 187Issue 4SApril 2012Page: e877 Advertisement Copyright & Permissions© 2012 by American Urological Association Education and Research, Inc.MetricsAuthor Information Malte Rieken Basel, Switzerland More articles by this author Gernot Bonkat Basel, Switzerland More articles by this author Georg Mueller Basel, Switzerland More articles by this author Stephen Wyler Basel, Switzerland More articles by this author Thomas Gasser Basel, Switzerland More articles by this author Alexander Bachmann Basel, Switzerland More articles by this author Expand All Advertisement Advertisement PDF DownloadLoading ...