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. 2014 Sep;9(3):404-8.
doi: 10.5114/wiitm.2014.44141. Epub 2014 Jul 19.

Determination of prostate adenoma weight reduction due to vaporisation process occurring during transurethral resection of the prostate

Tomasz Szopinski  1 , Tomasz Golabek  2 , Piotr Chlosta  1 , Andrzej Borówka  2
Affiliations

Determination of prostate adenoma weight reduction due to vaporisation process occurring during transurethral resection of the prostate

Tomasz Szopinski et al. Wideochir Inne Tech Maloinwazyjne. 2014 Sep.

Abstract

Introduction: Transurethral resection of the prostate (TURP) is regarded as the gold standard surgical treatment for benign prostatic hyperplasia (BPH). The completeness of TURP may be assessed indirectly by estimation of the weight of glandular tissue removed. This parameter is often lower than expected. Tissue vaporisation in the course of TURP could be a contributory cause.

Aim: To quantitatively evaluate tissue vaporisation occurring in the course of transurethral resection of the prostate and electrovaporisation of the prostate (EVAP) performed under experimental conditions.

Material and methods: The study was performed on 26 prostate glands removed during retropubic prostatectomy. Immediately following surgery all adenomas were halved and TURP or EVAP were carried out on both halves of each gland for period of 5 min. The amount of prostate tissue which vaporised during EVAP and TURP were calculated.

Results: The mean weight (± standard deviation) of the adenoma lost due to resection and vaporisation in the TURP group was 10.00 ±2.92 g and 4.26 ±1.59 g, respectively. The latter accounted for 30.10 ±7.71% of total prostate weight reduction. The mean prostate weight lost in the course of EVAP was 5.03 ±1.58 g.

Conclusions: The vaporisation significantly contributes to the prostate tissue loss occurring during transurethral resection of the prostate.

Keywords: adenoma; transurethral resection of the prostate; vaporisation.

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Figures

Photo 1
Photo 1
A container designed for the purpose of this study with a passive electrode at its bottom and an active electrode connected to the resectoscope loop. The walls of the container are made of plexiglass (isolator). The vaporisation electrode is also visible
Figure 1
Figure 1
Comparison of total weight reduction in electoresection group (group 1) vs. total weight reduction in electrovaporisation group (m reduction EVAP) (group 2). In group 1, total weight loss is the sum of resected prostate chips weight (m r) and the weight of the adenoma lost due to vaporisation (m EV)
Figure 2
Figure 2
Comparison of adenoma weight lost due to vaporisation following electroresection (m EV) vs. total weight reduction after electrovaporisation (m reduction EVAP)
See this image and copyright information in PMC

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