title: Uroflow Stop Test and Potency Recovery: A Surrogate for Pelvic Floor Integrity Post Robotic-Assisted Radical Prostatectomy?
abstract: OBJECTIVE
  To study the relation between uroflow Stop Test and early recovery of potency following robot-assisted radical prostatectomy (RARP). We recently showed that the ability to completely stop urine flow during voiding, measured objectively by uroflowmetry at the time of catheter removal (uroflow Stop Test) can predict early urinary continence recovery following RARP.
  
  
  METHODS
  In this prospective observational cohort, data were collected on 108 patients operated by a single surgeon (AEH). Eighty patients had a positive uroflow Stop Test (group one) and 28 had a negative Stop Test (group two). Patients were followed for a minimum of 2 years. Covariates included age, body mass index, international prostate symptom score and sexual health inventory for men scores, prostate-specific antigen, tumor stage, prostate volume, nerve sparing status, and estimated blood loss.
  
  
  RESULTS
  Preoperative characteristics were comparable between both groups except nerve sparing and prostate-specific antigen which were statistically higher in group one (P <.05). Early 3- and 6-months recovery of erectile function was significantly higher in group one. Potency rates in group one and two at 1, 3, 6, 9, 12, 18, and 24 months were 25% vs 14.3% (P = .241), 54.5% vs 18.5% (P = .001), 55.4% vs 18.5% (P = .001), 56.4% vs 36% (P = .084), 66.6% vs 50% (P = .141), 65.5% vs 56% (P = .404) and 73.2% vs 57.7% (P = .160) respectively. Uroflow Stop Test was independent predictor of early potency recovery on multivariate regression analysis at 6 months [odds ratio 6.042 (confidence interval 95% 1.496-24.413) P = .012].
  
  
  CONCLUSIONS
  Uroflow Stop Test is simple and can help predict early potency recovery following RARP.
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Abdullah M
authors.initials: AM
authors.lastname: Alenizi
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Marc
authors.initials: M
authors.lastname: Bienz
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Emad
authors.initials: E
authors.lastname: Rajih
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Anwar
authors.initials: A
authors.lastname: Alesawi
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Naif
authors.initials: N
authors.lastname: Al-Hathal
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Serge
authors.initials: S
authors.lastname: Benayoun
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Thierry
authors.initials: T
authors.lastname: Lebeau
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada.
authors.forename: Kevin C
authors.initials: KC
authors.lastname: Zorn
authors.affiliation: Division of Robotic Urology, Department of Surgery, Hôpital Sacré Cœur de Montréal, Université de Montréal, Montreal, Quebec, Canada. Electronic address: Assaad.elhakim@gmail.com.
authors.forename: Assaad
authors.initials: A
authors.lastname: El-Hakim
mesh_terms: D000368:Aged; D007172:Erectile Dysfunction / Q000209:etiology / Q000503:physiopathology / Q000534:rehabilitation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D017773:Pelvic Floor / Q000503:physiopathology*; D010410:Penile Erection / Q000502:physiology*; D011446:Prospective Studies; D011468:Prostatectomy / Q000379:methods*; D011469:Prostatic Diseases / Q000150:complications / Q000503:physiopathology / Q000601:surgery*; D020127:Recovery of Function / Q000502:physiology; D012371:Robotics; D016896:Treatment Outcome; D014554:Urination / Q000502:physiology*