title: Transurethral resection of prostate: technical progress and clinical experience using the bipolar Gyrus plasmakinetic tissue management system.
abstract: BACKGROUND
  The efficacy and safety of a new transurethral endoscopic device using bipolar electrocautery, the Gyrus system, were evaluated. This system permits rapid prostate tissue removal by endoscopic vaporization with little bleeding using saline irrigation, therefore eliminating transurethral resection of the prostate (TURP) syndrome.
  
  
  METHODS
  Between January 2000 and December 2006 a total of 401 patients with benign prostatic hyperplasia underwent transurethral resection of the prostate utilizing the Gyrus device.
  
  
  RESULTS
  We did not observe intraoperative complications, secondary hemorrhage with postoperatively severe fall of haemoglobin or any differences in sodium concentrations. Mean peak flow rate increased from 8.5 preoperatively to 24.5 ml/s at 36 months and mean International Prostatic Symptom Score (IPSS) decreased from 18 preoperatively to 5 at 36 months.
  
  
  CONCLUSIONS
  Our preliminary results with a bipolar electrode for electrovaporization of the prostate using the Gyrus suggest that it is a useful and safe endoscopic device.
authors.affiliation: Department of Urology, S Camillo Hospital, Rieti, Italy. martis.g@tiscali.it
authors.forename: Gianni
authors.initials: G
authors.lastname: Martis
authors.forename: Antonio
authors.initials: A
authors.lastname: Cardi
authors.forename: Diana
authors.initials: D
authors.lastname: Massimo
authors.forename: Maurizio
authors.initials: M
authors.lastname: Ombres
authors.forename: Bruno
authors.initials: B
authors.lastname: Mastrangeli
mesh_terms: D000368:Aged; D016063:Blood Loss, Surgical; D004564:Electrocoagulation / Q000295:instrumentation*; D004566:Electrodes; D004867:Equipment Design; D006801:Humans; D007431:Intraoperative Complications / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011467:Prostate / Q000601:surgery*; D011470:Prostatic Hyperplasia / Q000601:surgery*; D012189:Retrospective Studies; D020728:Transurethral Resection of Prostate / Q000295:instrumentation*; D014546:Urinary Catheterization