title: The measurement of vesical detrusor electromyographic activity during nerve-sparing radical hysterectomy.
abstract: OBJECTIVE
  To evaluate the feasibility for confirming the preservation of the parasymphathetic nerve pathway innervating the bladder during nerve-sparing radical hysterectomy (RH).
  
  
  METHODS
  A total of 20 patients underwent nerve-sparing RH. Intraoperative electrical stimulation (IES) were performed on the root of pelvic splanchnic nerve (PSN) trunk while recording the electromyographic (EMG) activity of the vesical detrusor. The average duration achieving residual urine ≤50 mL and urodynamic study (UDS) was observed.
  
  
  RESULTS
  Evoked potentials were recorded when stimulating, in 18 patients who were referred IES-positive. Its duration was 9.89 days. The UDS results indicated that all voided normally. The remaining 2 IES-negative cases with no evoked potentials had longer duration and the micturitions were performed using abdominal pressure.
  
  
  CONCLUSIONS
  During nerve-sparing RH, IES based on the measurement of EMG activity is a useful tool for confirmation of the preservation of parasymphathetic nerve pathway innervating the bladder and prediction of the postoperative bladder function.
authors.affiliation: Department of Obstetrics and Gynecology, Nan fang Hospital of Southern Medical University, Guangzhou, People's Republic of China.
authors.forename: Chun-Lin
authors.initials: CL
authors.lastname: Chen
authors.forename: Hong-Xia
authors.initials: HX
authors.lastname: Guo
authors.forename: Yan-Hong
authors.initials: YH
authors.lastname: Yu
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.forename: Jing-Song
authors.initials: JS
authors.lastname: Huang
authors.forename: Lin
authors.initials: L
authors.lastname: Lu
authors.forename: Yu
authors.initials: Y
authors.lastname: Guo
authors.forename: Wen
authors.initials: W
authors.lastname: Liu
authors.forename: Song-Tao
authors.initials: ST
authors.lastname: Qi
authors.forename: Su-Yue
authors.initials: SY
authors.lastname: Pan
authors.forename: Guang-Nan
authors.initials: GN
authors.lastname: Hou
mesh_terms: D000328:Adult; D004558:Electric Stimulation; D004576:Electromyography; D016889:Endometrial Neoplasms / Q000473:pathology / Q000601:surgery; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D007044:Hysterectomy / Q000379:methods*; D007431:Intraoperative Complications / Q000517:prevention & control*; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods; D009367:Neoplasm Staging; D010275:Parasympathetic Nervous System / Q000503:physiopathology; D013153:Splanchnic Nerves / Q000503:physiopathology; D001743:Urinary Bladder / Q000294:innervation* / Q000503:physiopathology; D001750:Urinary Bladder, Neurogenic / Q000517:prevention & control; D014563:Urodynamics; D002583:Uterine Cervical Neoplasms / Q000473:pathology / Q000601:surgery