title: Comparative study between thulium laser (Tm: YAG) 150W and greenlight laser (LBO:ND-YAG) 120W for the treatment of benign prostatic hyperpplasia: Short-term efficacy and security.
abstract: OBJECTIVE
  To compare the results of efficacy and safety of Thulium laser 150W against Greenlight laser 120W in the treatment of short term benign prostatic hyperplasia (12 months after surgery).
  
  
  METHODS
  This is a retrospective observational study where men who underwent the surgical technique of prostate vaporization over a period of four years in our center are included. The homogeneity of the sample was checked, and postoperative complications (acute urinary retention, reentry, need for transfusion), failures per year of surgery (reoperation, peak flow <15ml/sec, no improvement in comparing the I-PSS), and decreased PSA were compared a year after surgery. A bivariate analysis using Chi-square and t-Student was carried out.
  
  
  RESULTS
  116 patients were treated with thulium and 118 with green laser. The sample was homogeneous for preoperative variables (P>.05). No differences in complications were observed: in urine acute retention, 4.3% with thulium and 6.8% with green laser (P=.41); in readmissions, 2.6% with thulium and 1.7% with green laser (P=.68); in need for transfusion, 2.6% with thulium and 0% with green laser (P=.12). No differences were observed in the percentage of patients reoperation (1.7% in the group of thulium, 5.1% in the green laser, P=.28); or in individuals with Qmáx less than 15ml/sec (6.9% with thulium, 6.77% with green laser, P=.75), or in the absence of improvement in the IPSS (5, 2% with thulium, 3.4% with green laser, P=.65). There was also no difference in the levels of PSA in ng/mL a year after surgery: with thulium 2.78±2.09 and with green laser 1.83±1.48 (P=.75).
  
  
  CONCLUSIONS
  Prostate vaporization with thulium laser 150W is comparable to that made with green laser 120W for the treatment of lower urinary tract symptoms caused by BPH, being both effective and safe techniques to 12 months after surgery. Future prospective randomized studies are needed to confirm this conclusion on both techniques.
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España.
authors.forename: J L
authors.initials: JL
authors.lastname: Palmero-Martí
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España. Electronic address: jorpanav22@gmail.com.
authors.forename: J
authors.initials: J
authors.lastname: Panach-Navarrete
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España.
authors.forename: L
authors.initials: L
authors.lastname: Valls-González
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España.
authors.forename: A
authors.initials: A
authors.lastname: Ganau-Ituren
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España.
authors.forename: J
authors.initials: J
authors.lastname: Miralles-Aguado
authors.affiliation: Servicio de Urología, Hospital Universitario de La Ribera, Alzira, Valencia, España.
authors.forename: A
authors.initials: A
authors.lastname: Benedicto-Redón
mesh_terms: D000368:Aged; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy; D053844:Lasers, Solid-State / Q000009:adverse effects / Q000627:therapeutic use*; D008297:Male; D011183:Postoperative Complications / Q000209:etiology; D011470:Prostatic Hyperplasia / Q000601:surgery*; D012189:Retrospective Studies; D013932:Thulium / Q000009:adverse effects / Q000627:therapeutic use*; D013997:Time Factors; D016896:Treatment Outcome; D016055:Urinary Retention
chemical_list: D013932:Thulium
keywords: Benign hyperplasia prostate; Green laser; Hiperplasia benigna de próstata; Láser tulio; Láser verde; Thulium laser