title: Effect of laparoscopic hysterectomy on the vascularization of the lower urinary tract.
abstract: BACKGROUND
  The aim of this prospective study was to evaluate the changes in the vascularization of the lower urinary tract following laparoscopic hysterectomy (LH).
  
  
  METHODS
  Seventy women undergoing LH not under the indication of a uterine myoma were included. All subjects underwent urinalysis, pelvic examination, and introital color Doppler ultrasonography and completed a urinary questionnaire before and 6 months after LH. One-hour pad tests and urodynamic studies were performed in clinically incontinent women pre- and postoperatively.
  
  
  RESULTS
  Evaluation of the Doppler velocimetric parameters of bladder neck and periurethral vessels before and after LH, including number of vessels, pulsatility index, systolic peak, and minimum diastole, revealed no statistically significant differences (p > 0.05). In addition, the prevalence of stress urinary incontinence (SUI) decreased significantly from 37.1% (n = 26) preoperatively to 17.1% (n = 12) postoperatively (p < 0.01). A total of 19 patients reported no further SUI following LH. Their urinary leakages on the pad tests had all <10 g before surgery. When we analyzed the data of the women reporting no further SUI (n = 19) and de novo SUI (n = 5) following LH, the changes in the pulsatility index also showed no significant difference from the pre-LH values (p > 0.05).
  
  
  CONCLUSIONS
  The results of our study suggest that LH has little impact on the blood flow of bladder neck and urethra. Although some women experienced relief of the symptoms of mild or de novo SUI after LH, this being unrelated to changes in the vascularization of the lower urinary tract.
authors.affiliation: Department of Obstetrics and Gynecology, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Cheng-Min
authors.initials: CM
authors.lastname: Liu
authors.forename: Eing-Mei
authors.initials: EM
authors.lastname: Tsai
authors.forename: Shih-Cheng
authors.initials: SC
authors.lastname: Hsu
authors.forename: Chin-Hu
authors.initials: CH
authors.lastname: Wu
authors.forename: Chiu-Lin
authors.initials: CL
authors.lastname: Wang
authors.forename: Cheng-Yu
authors.initials: CY
authors.lastname: Long
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D007045:Hysterectomy, Vaginal / Q000009:adverse effects* / Q000379:methods; D010535:Laparoscopy / Q000009:adverse effects* / Q000379:methods; D008875:Middle Aged; D011446:Prospective Studies; D013997:Time Factors; D016896:Treatment Outcome; D014550:Urinary Incontinence, Stress / Q000175:diagnosis / Q000209:etiology*; D014551:Urinary Tract / Q000098:blood supply*; D014563:Urodynamics; D014572:Urology / Q000379:methods