Azúa CG, Zúñiga MM, Chaves CD, Quirós AJL

Language: Spanish
References: 17
Page: 28-35
PDF size: 709.08 Kb.

ABSTRACT

The use of electrosurgical units allows dissection, cutting and hemostasis due to heat generated by the flow of electrical current through the tissue, also known as the diathermy effect. This heat diffuses in a phenomenon known as thermal dispersion to surrounding tissue, and the tissue could be injured. If compared with other modalities, monopolar units are those that produce greater tissue damage due to thermal dispersion and among these units’ different modes of use, coagulation mode is the one that produces more tissue damage. This study researches the extent of injured tissue produced by thermal dispersion when using three different monopolar electrodes (2 used in open surgery and one during laparoscopic surgery), in the coagulation mode at a power of 35 W in a porcine liver model, ex vivo. The extent of tissue damage was established by measuring the distance of the histological changes caused after the use of each electrode. The histological lateral extension and depth of the lesion was 0.82 and 0.82 mm, 0.81 mm and 0.81, 0.86 and 0.88 mm with electroscalpel # 1, # 2 and # 3 respectively. In conclusion, there was no significant difference in the extension of the histological lesion when using different monopolar electrodes.

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