Histopathologic changes after bipolar resection of the prostate: depth of penetration of bipolar thermal injury

Journal of Endourology
Michael MaddoxGeorge Haleblian

Abstract

While the power needed to initiate bipolar vaporization is higher than conventional monopolar resection, the energy needed to maintain bipolar vaporization is significantly lower and may result in less thermal tissue injury. This may have implications for hemostasis, scarring, and perioperative morbidity. The objective of this study is to assess histopathologic changes in prostatic tissue after bipolar transurethral vaporization of the prostate. Male patients older than 40 years with a diagnosis of benign prostatic hyperplasia (BPH) who elected to undergo bipolar transurethral vaporization of the prostate were included in this study. Patients were excluded if they had a previous transurethral resection of the prostate (TURP) or prostate radiation therapy. An Olympus button vaporization electrode was used to vaporize prostate tissue. A loop electrode was then used to obtain a deep resection specimen. The vaporized and loop resection surfaces were inked and sent for pathologic analysis to determine the presence of gross histologic changes and the depth of penetration of the bipolar vaporization current. A total of 12 men underwent bipolar TURP at standard settings of 290 W cutting and 145 W coagulation current. Mean patient age w...Continue Reading

References

Sep 1, 1984·The Journal of Urology·S J BerryL L Ewing
Aug 14, 1998·Mayo Clinic Proceedings·R S KuntzmanD M Barrett
Aug 31, 2004·Journal of Endourology·David S WangHoward N Winfield

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