title: Photoselective Vaporization with KTP 180-W Green Laser for the Treatment of Lower Urinary Symptoms Secondary to Benign Prostatic Enlargement: Effectiveness and Safety at Midterm Follow-Up.
abstract: OBJECTIVE
  To determine safety, efficacy, and improvement in patient's quality of life (QoL) with 180-W green light laser prostate photovaporization in medium-term follow-up.
  
  
  METHODS
  Observational descriptive analysis. All the patients who were treated with photoselective vaporization with potassium titanyl phosphate crystal 180-W green laser between January 2012 and February 2014 were included. The primary outcome was the change of the International Prostate Symptom Score (IPSS). A descriptive analysis was conducted. Statistic inference was made using nonparametric measurements according to the findings. The Wilcoxon signed-rank test was applied to paired data. Finally, survival curves were used to determine the effectiveness.
  
  
  RESULTS
  Two hundred one subjects were included. The mean follow-up was 13.1 months (2-28). Prostate volume was 75.46 ml (30-240). Mean surgical time was 73.29±29.74 minutes, laser time was 44.27±21.03 minutes, and the mean energy used was 271.5±140.1 kJ. Postoperative indwelling catheter time was 15.81±8.87 hours. IPSS decreased 12.79 points, from 19.13±7.79 to 6.34±5.91 (p=0.0001). QoL question of the IPSS shows improvement from 4.16 to 1.27 (p=0.00001). In a maximum follow-up period of 28 months, 85.2% of patients showed an improvement of four points in IPSS. Visual scale of improvement perception showed an increase from 36.49 to 89.84 (p=0.0001). No major complications were reported.
  
  
  CONCLUSIONS
  Prostate photoselective vaporization with a 180-W green light laser is a safe and effective treatment option for patients with lower urinary symptoms secondary to benign prostate enlargement.
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Mauricio
authors.initials: M
authors.lastname: Plata
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Carlos G
authors.initials: CG
authors.lastname: Trujillo
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Cristina
authors.initials: C
authors.lastname: Domínguez
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Juan Ignacio
authors.initials: JI
authors.lastname: Caicedo
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Gabriel Leonardo
authors.initials: GL
authors.lastname: Carreño
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Angela M
authors.initials: AM
authors.lastname: Mariño Alvarez
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Natalia
authors.initials: N
authors.lastname: Hernandez
authors.affiliation: Department of Urology and Universidad de Los Andes School of Medicine, Fundación Santa Fe de Bogotá, Bogotá, Colombia .
authors.forename: Juan G
authors.initials: JG
authors.lastname: Cataño
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005500:Follow-Up Studies; D006801:Humans; D053685:Laser Therapy / Q000379:methods*; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008027:Light; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D011470:Prostatic Hyperplasia / Q000601:surgery*; D011788:Quality of Life; D012189:Retrospective Studies; D012449:Safety; D016896:Treatment Outcome; D062885:Urinary Catheters