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01.04.2015 | Original Article

The 80-W KTP GreenLight laser vaporization of the prostate versus transurethral resection of the prostate (TURP): adjusted analysis of 5-year results of a prospective non-randomized bi-center study

verfasst von: Sanwei Guo, Georg Müller, Kurt Lehmann, Scherwin Talimi, Gernot Bonkat, Heike Püschel, Thomas Gasser, Alexander Bachmann, Malte Rieken

Erschienen in: Lasers in Medical Science | Ausgabe 3/2015

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Abstract

This study aims to compare long-term results of photoselective vaporization of the prostate (PVP) with an 80-W potassium titanyl phosphate (KTP) laser and monopolar transurethral resection of the prostate (TURP) in terms of efficacy, durability, and safety in an adjusted patient population. This prospective, non-randomized bi-center study included 120 (PVP) and 68 (TURP) patients in each arm. Patients were evaluated at 60 months of follow-up. Data from 30 (PVP) and 31 (TURP) patients were available for analysis. The primary outcome measurement was the International Prostate Symptom Score (IPSS) at 5 years. Secondary outcome measurements included voiding symptoms (quality of life (QoL) score), micturition parameters (maximal flow rate, Q _max), post-void residual (PVR) volume, prostate-specific antigen (PSA) value, and reoperation rate. At study inclusion, voiding symptoms and micturition parameters were comparable between both groups. Age, prostate volume, and the proportion of patients with platelet aggregation inhibition or oral anticoagulation were significantly higher in the PVP group. No significant difference could be detected between patients available at 60 months and those lost to follow-up in terms of preoperative characteristics in either group. Sixty months postoperatively, the improvement of IPSS, QoL, Q _max, and PVR volume showed no significant difference between both groups. PSA reduction was significantly higher after TURP. The reoperation rate due to urethral stricture (PVP, 13 %; TURP, none), bladder neck contracture (PVP, 3 %; TURP, none), and persisting or recurrent adenoma (PVP, 18 %; TURP, 3 %) was significantly higher after the 80-W PVP. Eighty-watt PVP leads to comparable functional outcomes to TURP. However, during a long-term follow-up, significantly more reoperations are necessary after PVP with the 80-W KTP laser, suggesting inferior tissue ablation capacity of the 80-W KTP laser.

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Titel: The 80-W KTP GreenLight laser vaporization of the prostate versus transurethral resection of the prostate (TURP): adjusted analysis of 5-year results of a prospective non-randomized bi-center study
verfasst von: Sanwei Guo
Georg Müller
Kurt Lehmann
Scherwin Talimi
Gernot Bonkat
Heike Püschel
Thomas Gasser
Alexander Bachmann
Malte Rieken
Publikationsdatum: 01.04.2015
Verlag: Springer London
Erschienen in: Lasers in Medical Science / Ausgabe 3/2015
Print ISSN: 0268-8921
Elektronische ISSN: 1435-604X
DOI: https://doi.org/10.1007/s10103-015-1721-x

Springer Medizin

Abstract

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