title: Urodynamic assessment of bladder and urethral sphincter function before and after robot-assisted radical prostatectomy.
abstract: BACKGROUND
  Affectation of the bladder after open prostatectomy is demonstrated. Decrease in bladder capacity and bladder compliance, detrusor hyper-or hypo-activity and voiding dysfunction are observed. We propose to investigate the effects of robotic surgery on bladder and sphincter function through the comparative study of preoperative and postoperative urodynamic values 3 months after prostatectomy.
  
  
  METHODS
  Prospective study of 32 consecutive patients undergoing robotic prostatectomy. They all underwent urodynamic study one month before the intervention and 3 months after the radical prostatectomy.
  
  
  RESULTS
  Twenty five percent of patients undergoing robotic prostatectomy showed detrusor hyperactivity accompanied by a decrease in bladder compliance of 30.2 to 21.8 ml/cmH2O. Urethral profile showed diminished functional length of 67 to 44 mm and decreased maximum urethral pressure of 48.5 to 29.3 cmH2O. After robotic prostatectomy 21.8% of patients had detrusor hypoactivity, obstruction decreased between 28.1% to 12.5%.
  
  
  CONCLUSIONS
  Decreased bladder compliance, detrusor hypo- or hyperactivity and obstruction improvement observed in the study of the flow pressure have been associated with sphincter involvement. It is part of the complex of lower urinary tract dysfunction that occurs after robotic prostatectomy.
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España. Electronic address: barnoiu@yahoo.com.
authors.forename: O S
authors.initials: OS
authors.lastname: Barnoiu
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España.
authors.forename: R
authors.initials: R
authors.lastname: Vozmediano-Chicharro
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España.
authors.forename: E
authors.initials: E
authors.lastname: García-Galisteo
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España.
authors.forename: J
authors.initials: J
authors.lastname: Soler-Martinez
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España.
authors.forename: J M
authors.initials: JM
authors.lastname: del Rosa-Samaniego
authors.affiliation: Servicio de Urología, Hospital Virgen de la Victoria, Málaga, España.
authors.forename: J
authors.initials: J
authors.lastname: Machuca-Santacruz
authors.affiliation: Servicio de Urología, Hospital Carlos Haya, Málaga, España.
authors.forename: V
authors.initials: V
authors.lastname: Baena-Gonzalez
mesh_terms: D000368:Aged; D006801:Humans; D008297:Male; D008875:Middle Aged; D059035:Perioperative Period; D011446:Prospective Studies; D011468:Prostatectomy / Q000379:methods*; D065287:Robotic Surgical Procedures; D013997:Time Factors; D014521:Urethra / Q000503:physiopathology*; D001743:Urinary Bladder / Q000503:physiopathology*; D014563:Urodynamics
keywords: Bladder dysfunction; Disfunción de vaciado; Disfunción vesical; Estudio urodinámico; Incontinencia urinaria; Prostatectomía radical asistida por robot; Robot-assisted prostatectomy; Urinary incontinence; Urodynamic study; Voiding dysfunction