title: Comparison of 120 W 2-μm laser resection of the prostate outcomes in patients with or without preoperative urinary retention.
abstract: BACKGROUND
  The 2-μm (thulium) laser is a new surgical laser for benign prostatic hyperplasia (BPH).
  
  
  OBJECTIVE
  To report on the long-term outcome of 120 W TmLRP-TT in BPH patients with or without preoperative urinary retention.
  
  
  METHODS
  The study was conducted from May 2013 to April 2015 among patients who were diagnosed with BPH and underwent TmLRP-TT. Patients were divided into two groups: with and without preoperative urinary retention. Pre- and post-operative data were evaluated for prostate-specific antigens (PSA), International Prostate Symptom Score (IPSS), Quality Of Life Score (QOLS), maximum flow rate (Qmax), and post-void residual urine volume (PVR).
  
  
  RESULTS
  A total of 310 patients were enrolled for a follow-up period of more than 12 months. Overall 95 (30.6%) patients had urinary retention before TmLRP-TT, while 215 (69.4%) did not. We found that patients with urinary retention tended to have larger prostates and a higher PSA score. So a longer operation time and catheterization time were observed in them. Yet there was no difference in other perioperative and postoperative parameters. Postoperatively IPSS, QOLS, Qmax, and PVR showed a significant improvement in each group, but no significant difference was identified between the two groups.
  
  
  CONCLUSIONS
  This study represents the first direct comparison of TmLRP-TT outcomes in patients with or without urinary retention. With safe use, resultant excellent homeostasis, high cutting efficiency and rapid vaporization, 120 W 2-μm laser resection of the prostate has been proved to be safe and effective, and there was no increased risk for patients with urinary retention.
authors.affiliation: Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
authors.forename: Xiaolong
authors.initials: X
authors.lastname: Liu
authors.affiliation: Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
authors.forename: Yongchang
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Gao
authors.affiliation: Department of Urology, The Second Affiliated Hospital of Soochow University, Suzhou, China.
authors.forename: Yuxi
authors.initials: Y
authors.lastname: Shan
keywords: 2-μm laser; benign prostatic hyperplasia; urinary retention