title: The volume of prostate can impact the male sexual function following photoselective vaporization of the prostate: results of a prospective analysis of 128 patients with 2-year follow-up.
abstract: OBJECTIVE
  To evaluate the impact of the male sexual function following photoselective vaporization of the prostate treatment in different volume of prostates.
  
  
  METHODS
  One hundred and twenty-eight consecutive patients with active sexual ability who underwent prostate vaporization with the green light laser during 2009-2011 were enrolled. We divided all patients into two groups group I (<70 ml, n = 58) and group II (≥ 70 ml, n = 70) according to the volume of prostate. Two group patients were assessed by International Index of Erectile Function (IIEF-5) preoperatively and at 1, 3, 6, 12, and 24 months. We measured the IPSS, QoL, Q max, PRV PSA at the baseline, postoperation and every visit. IIF-5 questionnaires were also collected in every visit.
  
  
  RESULTS
  One hundred and twenty-eight patients were under successful operations. In the 1, 3, 6, 12 and 24 months, main parameters following operation such as Q max PRV IPSS and QoL scores had significant improved compared to baseline. However, the group II was better than group I in every visits. As the 6, 12 and 24 months of questionnaires, group II had less IIEF scores than group I. To evaluate the adverse sexual outcomes of IIEF-5 lists, the erectile dysfunction and overall unsatisfied scores of group II were much more than group I in 6-24-month visits.
  
  
  CONCLUSIONS
  The larger volume of prostate (≥ 70 ml) following PVP treatment has negative influence on sexual function in the long term (more than 6 months). The adverse sexual outcomes were significant increased after PVP in the prostate with more than 70-ml volume.
authors.affiliation: Minimally Invasive Urology Center, Provincial Hospital, Affiliated to Shandong University, No, 324 Jingwu Road, Jinan, 250021, China. 944172919@qq.com
authors.forename: Zhen
authors.initials: Z
authors.lastname: Guo
authors.forename: Xunbo
authors.initials: X
authors.lastname: Jin
mesh_terms: D017677:Age Distribution; D000368:Aged; D000704:Analysis of Variance; D016009:Chi-Square Distribution; D015331:Cohort Studies; D007172:Erectile Dysfunction / Q000453:epidemiology / Q000209:etiology* / Q000503:physiopathology; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D053685:Laser Therapy / Q000009:adverse effects / Q000379:methods*; D008297:Male; D008875:Middle Aged; D009929:Organ Size; D011183:Postoperative Complications / Q000453:epidemiology / Q000503:physiopathology; D011446:Prospective Studies; D011467:Prostate / Q000033:anatomy & histology*; D011470:Prostatic Hyperplasia / Q000175:diagnosis / Q000601:surgery*; D012720:Severity of Illness Index; D012735:Sexual Dysfunction, Physiological / Q000453:epidemiology / Q000209:etiology / Q000503:physiopathology; D018709:Statistics, Nonparametric; D013997:Time Factors; D016896:Treatment Outcome