Document Detail

The effect of increased maximum power output on perioperative and early postoperative outcome in photoselective vaporization of the prostate.
MedLine Citation:
PMID:  23280439     Owner:  NLM     Status:  MEDLINE    
BACKGROUND AND OBJECTIVE: Preclinical studies suggest an increased vaporization rate and speed of the 532 nm 180-W XPS GreenLight laser (180-W) compared with the 120-W HPS GreenLight laser (120-W) and the 80-W PV GreenLight laser (80-W). To test the clinical relevance of this observation we analyzed intraoperative data and early postoperative results after photoselective vaporization of the prostate (PVP) with the 180-W, 120-W, and 80-W laser.
STUDY DESIGN/MATERIALS AND METHODS: A retrospective pair-to-pair comparison was performed including 80 consecutive patients who underwent PVP for the treatment of benign prostate enlargement with the 180-W, 120-W, and 80-W laser. The groups matched concerning age, prostate volume, PSA-value, and preoperative catheterization. Primary study outcome measurement was PSA-value reduction at 3 months; intraoperative data, perioperative complications, and early postoperative functional course were secondary study outcome measurements.
RESULTS: Energy application per case (kJ), preoperative prostate volume (kJ/ml) operating time (kJ/minute), and lasing time (kJ/minute) was significantly higher with the 180-W laser. Prevalence of impaired visibility due to bleeding was comparable between the 180-W and the 120-W laser but significantly lower with 80-W. Duration of hospitalization was shorter with the 180-W laser compared to the former laser systems. During the postoperative course of 3 months voiding parameters and micturition symptoms significantly improved in all groups, the incidence of postoperative dysuria was comparable. Postoperative PSA-value reduction was significantly higher after treatment with the 180-W laser.
CONCLUSIONS: With the 180-W laser, higher energy application and higher speed of tissue vaporization leads to increased tissue vaporization compared to the former 120-W and 80-W laser systems. Clinical efficacy and perioperative safety are maintained with the higher powered laser.
Malte Rieken; Gernot Bonkat; Georg Müller; Stephen Wyler; Nicole Ebinger Mundorff; Heike Püschel; Thomas Gasser; Alexander Bachmann
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2012-12-31
Journal Detail:
Title:  Lasers in surgery and medicine     Volume:  45     ISSN:  1096-9101     ISO Abbreviation:  Lasers Surg Med     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-01-28     Completed Date:  2013-08-20     Revised Date:  2014-05-14    
Medline Journal Info:
Nlm Unique ID:  8007168     Medline TA:  Lasers Surg Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  28-33     Citation Subset:  IM    
Copyright Information:
Copyright © 2012 Wiley Periodicals, Inc.
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MeSH Terms
Aged, 80 and over
Laser Therapy, Low-Level / adverse effects,  instrumentation*
Lasers, Solid-State / therapeutic use*
Prostatic Hyperplasia / complications,  pathology,  therapy*
Recovery of Function
Retrospective Studies
Time Factors
Transurethral Resection of Prostate / adverse effects,  instrumentation*
Treatment Outcome
Comment In:
J Urol. 2014 Apr;191(4):1058   [PMID:  24703139 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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