title: Holmium laser enucleation of the prostate for benign prostatic hyperplasia: effectiveness, safety, and overcoming of the learning curve.
abstract: OBJECTIVE
  To examine the efficacy and safety of holmium laser enucleation of the prostate (HoLEP) for the surgical treatment of benign prostatic hyperplasia and to estimate the time to overcome the learning curve.
  
  
  METHODS
  From May 2008 to October 2009, 164 consecutive patients treated with HoLEP were enrolled in this study. International Prostate Symptom Score (IPSS), peak urinary flow rate (Qmax), and postvoid residual urine (PVR) were documented preoperatively and at 6 weeks and 3, 6, 12, and 18 months postoperatively. The 164 study subjects were divided into 3 groups (group 1 the first 50 patients treated, group 2 the second 50, and group 3 the third 64), and perioperative data and complications were analyzed in these groups to determine the learning curve. In addition, the inverse and upward techniques were compared in terms of the effects and the stability of morcellation.
  
  
  RESULTS
  The mean patient age was 69 years, and the average operation time was 62 minutes (range, 20-208 minutes). Mean prostate volume was 54.2 ml and mean resected tissue weight was 18.6 g. Postoperatively, IPSS and PVR decreased and Qmax increased significantly. Postoperative complications were transient incontinence (8.5%), urinary retention (4.3%), hematuria (3.0%), urinary tract infection (1.2%), and urethral stricture (0.6%), and intraoperative complications were minor capsular perforation (4%) and bladder injury (8%).
  
  
  CONCLUSIONS
  HoLEP was found to be effective and safe regardless of prostate size. We recommend that a systematic educational program be established to reduce the learning curve.
authors.affiliation: Department of Urology, National Medical Center, Seoul, Korea.
authors.forename: Jin Chul
authors.initials: JC
authors.lastname: Hwang
authors.forename: Sang Myung
authors.initials: SM
authors.lastname: Park
authors.forename: Jong Bouk
authors.initials: JB
authors.lastname: Lee