MP19-14 ASSOCIATION OF PREOPERATIVE URETHRAL PARAMETERS ON MAGNETIC RESONANCE IMAGING AND IMMEDIATE RECOVERY OF CONTINENCE FOLLOWING RETZIUS-SPARING ROBOT-ASSISTED RADICAL PROSTATECTOMY

Abstract

You have accessJournal of UrologyProstate Cancer: Localized: Surgical Therapy I (MP19)1 Apr 2020MP19-14 ASSOCIATION OF PREOPERATIVE URETHRAL PARAMETERS ON MAGNETIC RESONANCE IMAGING AND IMMEDIATE RECOVERY OF CONTINENCE FOLLOWING RETZIUS-SPARING ROBOT-ASSISTED RADICAL PROSTATECTOMY Youjian Li*, Xuefeng Qiu, and Hongqian Guo Youjian Li*Youjian Li* More articles by this author , Xuefeng QiuXuefeng Qiu More articles by this author , and Hongqian GuoHongqian Guo More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000000852.014AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Studies regarding predictive factors of urinary continence following Retzius-sparing radical prostatectomy is limited. This study was designed to evaluate association of urethral parameters on preoperative magnetic resonance imaging (MRI) and immediate recovery of urinary continence following Retzius-sparing robot assisted radical prostatectomy (RS-RARP). METHODS: This retrospective cohort study enrolled 156 patients with clinically localized prostate cancer who underwent MRI before RS-RARP. We measured the following structures on preoperative MRI: minimal residual membranous urethral length (mRUL), peri-urethral sphincter complex (PSC) thickness, urethral wall thickness (UWT), the thicknesses of the levator ani muscle (LAM) and obturator internus muscle (OIM). Immediate urinary continence was defined as patients reported freedom from using safety pad within 7 days after removal of urinary catheter. Patients were divided into two groups according the median of each parameter on MRI. We retrospectively analyzed the patients in term of preoperative clinical factors and postoperative urinary continence. RESULTS: A total of 100 patients (64.1%) reported immediate urinary continence after RS-RARP. Immediate urinary continence was significantly more in patients with longer mRUL (≥ 8.70 mm) than in patients with shorter mRUL (< 8.70 mm; P = 0.000). On multivariable analysis, longer mRUL was significantly related to immediate urinary continence after RS-RAPA (odds ratio, 8.265, P = 0.000). PSC, UWT, LAM and OIM were not associated with immediate urinary continence. CONCLUSIONS: Our results firstly demonstrated that preoperative mRUL measured on MRI was an independent predictor of immediate urinary continence following RS-RARP. Therefore, preservation of membranous urethra is still the anatomical basis of better urinary outcome after RS-RARP. Source of Funding: none © 2020 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 203Issue Supplement 4April 2020Page: e303-e303 Advertisement Copyright & Permissions© 2020 by American Urological Association Education and Research, Inc.MetricsAuthor Information Youjian Li* More articles by this author Xuefeng Qiu More articles by this author Hongqian Guo More articles by this author Expand All Advertisement PDF downloadLoading ...