Urological Research

, Volume 30, Issue 1, pp 15–20 | Cite as

In vitro comparison of transurethral vaporization of the prostate (TUVP), resection of the prostate (TURP), and vaporization-resection of the prostate (TUVRP)

  • Oliver Reich
  • Stefan Corvin
  • Ralph Oberneder
  • Ronald Sroka
  • Rolf Muschter
  • Alfons Hofstetter
Original Paper

Abstract.

Problem. Transurethral vaporization of the prostate (TUVP) and vaporization-resection of the prostate (TUVRP) ("vapor cut, band electrode") seem to be alternatives to conventional resection of the prostate (TURP). For TUVP and TUVRP, little in vitro data has yet been published. The aim of this study was to determine settings for optimal performance with TUVP and TUVRP and to investigate electrosurgical parameters relevant to safety. Methods. Standardized experiments were performed on porcine muscle. Mass loss and coagulation zones were measured optically. Additionally, electrical parameters were recorded. Results. The maximum tissue ablation rates were 3.8 cm3 per min and 6.1 cm3 per min for TUVP and TUVRP, respectively, compared to 6.5 cm3 per min for TURP. The maximum coagulation depths reached 2.1 mm (TUVP), 1.4 mm (TUVRP), and 0.9 mm (TURP). Optimal in vitro settings for TUVP/TUVRP/TURP were as follows: generator power of 250/120/90 W, drag speed of 5/15/20 mm/s, and pressure of 0.40/0.15/0.05 N. Different power generators and electrodes showed considerably varying performance. The energy to remove 1 g of tissue averaged 7.500 J (TUVP), 620 J (TUVRP), and 400 J (TURP). Conclusions. These results allow quantification of the influence of different variables on TUVP, TUVRP, and TURP in vitro. The TUVP proves to be an effective ablation alternative. Nevertheless, a 15 to 20 times higher energy demand has to be considered. TUVRP combines excellent ablation features with greater coagulation volumes, indicating better hemostasis.

Transurethral vaporization of the prostate (TUVP) Transurethral vaporization-resection of the prostate (TUVRP) Transurethral resection of the prostate (TURP) In vitro electrosurgical parameters 

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Copyright information

© Springer-Verlag 2002

Authors and Affiliations

  • Oliver Reich
    • 1
  • Stefan Corvin
    • 1
  • Ralph Oberneder
    • 1
  • Ronald Sroka
    • 1
  • Rolf Muschter
    • 2
  • Alfons Hofstetter
    • 1
  1. 1.Department of Urology, University Hospital Grosshadern, Ludwig-Maximilian University, Marchioninistr. 15, 81377 Munich, Germany
  2. 2.Department of Urology, Klinikum Rotenburg, Rotenburg, Germany

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