title: A prospective trial of GreenLight PVP (HPS120) versus transurethral resection of the prostate in the treatment of lower urinary tract symptoms in Ontario, Canada.
abstract: BACKGROUND
  Photoselective vaporization of the prostate (PVP) is a bloodless, relatively painless alternative to transurethral resection of the prostate (TURP) for relief of lower urinary tract symptoms (LUTS) in benign prostatic hyperplasia (BPH).
  
  
  OBJECTIVE
  We compare the effectiveness, safety and cost-effectiveness of Greenlight Laser PVP (HPS-120) and TURP.
  
  
  METHODS
  We conducted a prospective, non-randomized trial in 3 Ontario centres from March 2008 to February 2011. Assessments were completed at baseline, 1 and 6 months following surgery at the physicians' offices and at 12 and 24 months by phone. The primary outcome was the change in International Prostate Symptoms Score (IPSS) score at 6 months versus baseline. Secondary outcomes were changes in flow rate, postvoid residual (PVR), prostate-specific antigen (PSA) and sexual health inventory for men (SHIM) scores. Adverse events, health-related quality of life (HRQoL), resource utilization and productivity losses were collected.
  
  
  RESULTS
  Although the IPSS decreased in both arms (n = 140 for PVP and n = 24 for TURP) between baseline and 6 months, the difference in change over time between the groups was not statistically significant (p = 0.718). Other outcomes improved equally from baseline and 6 months (Qmax, SHIM, PSA and HRQoL), with only changes in PVR favouring PVP (p = 0.018). There were no statistical differences in serious adverse events. In total, 130 of 140 PVP patients were outpatients, all TURP subjects were inpatients. PVP was less costly than TURP ($3891 vs. $4863; p < 0.001) with similar quality-adjusted life years (0.448 vs. 0.441; p = 0.658).
  
  
  CONCLUSIONS
  Greenlight Laser PVP (HPS-120) is a safe and cost-effective alternative to TURP for outpatient treatment of LUTS and can be completed as an outpatient with minimal blood loss.
authors: Division of Urology, McMaster University, Hamilton, ON;
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