title: Comparison of Holmium Laser Prostate Enucleation Outcomes in Patients with or without Preoperative Urinary Retention.
abstract: OBJECTIVE
  We determine whether outcomes of holmium laser enucleation of the prostate are similar in patients with and those without preoperative urinary retention.
  
  
  METHODS
  From May 2008 to July 2014, 231 patients underwent holmium laser prostate enucleation for symptomatic benign prostatic hyperplasia. Retrospective analysis was performed to evaluate for differences in postoperative outcomes for patients with and those without preoperative urinary retention.
  
  
  RESULTS
  Overall 95 patients (41%) had urinary retention before holmium laser prostate enucleation while 136 (59%) did not. Mean followup for all patients was 15.3 months. Patients with retention tended to be older, have larger prostates, and have higher scores on the AUA SS and bother questionnaires (all p <0.05). Postoperatively there was no difference in rates of complications, including urinary retention. Both groups showed significant improvement in AUA SS and bother score after the procedure at all postoperative points. Median post-void residual was less than 60 ml and median maximum flow rate on uninstrumented uroflow was greater than 18 ml per second at all postoperative points for all patients regardless of preoperative retention status. No patients required long-term catheterization and rates of postoperative complications did not differ significantly during the followup period.
  
  
  CONCLUSIONS
  This study represents the first direct comparison to our knowledge of holmium laser prostate enucleation outcomes in patients with or without urinary retention. There was no increased risk of postoperative urinary retention in patients with preoperative retention, and both groups demonstrated significant postoperative improvement in subjective and objective voiding measures.
authors.affiliation: Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
authors.forename: Niels V
authors.initials: NV
authors.lastname: Johnsen
authors.affiliation: Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
authors.forename: Trisha J
authors.initials: TJ
authors.lastname: Kammann
authors.affiliation: Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee.
authors.forename: Tracy
authors.initials: T
authors.lastname: Marien
authors.affiliation: Division of Urology, University of Tennessee Medical Center, Knoxville, Tennessee.
authors.forename: Ryan B
authors.initials: RB
authors.lastname: Pickens
authors.affiliation: Department of Urologic Surgery, Vanderbilt University Medical Center, Nashville, Tennessee. Electronic address: nicole.miller@vanderbilt.edu.
authors.forename: Nicole L
authors.initials: NL
authors.lastname: Miller
mesh_terms: D000368:Aged; D006801:Humans; D053844:Lasers, Solid-State / Q000627:therapeutic use*; D008297:Male; D011467:Prostate / Q000601:surgery*; D011470:Prostatic Hyperplasia / Q000150:complications / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome; D016055:Urinary Retention / Q000209:etiology / Q000601:surgery
keywords: lasers; prostate; prostatic hyperplasia; solid-state; transurethral resection of prostate