• Surgical endoscopy · Jun 1997

    Randomized Controlled Trial Comparative Study Clinical Trial

    Port site electrosurgical (diathermy) burns during surgical laparoscopy.

    • P D Willson, J D van der Walt, D Moxon, and J Rogers.
    • Academic Surgical Unit, Royal London Hospital, London, E1 1BB, United Kingdom.
    • Surg Endosc. 1997 Jun 1;11(6):653-4.

    BackgroundDirect and capacitive coupling of diathermy current have been reported as causes of occult injury during surgical laparoscopy.MethodsIn order to determine the incidence of electrosurgical injury adjacent to metal and plastic cannulas, skin biopsies at 19 port sites used for monopolar electrosurgery were analyzed for coagulative necrosis. Prior to surgery the cannulas were randomized to either metal or plastic.ResultsCoagulative necrosis was observed at nine electrosurgery port sites compared to only one control (chi2 = 4.872; df = 1; 0.05 > p > 0.02). Plastic cannulas afforded no greater protection from skin burns than metal cannulas.ConclusionsBurns may be the result of direct or capacitive coupling to metal cannulas or capacitive coupling to the skin edge across plastic cannulas. The potential exists for burns to other tissues also in close proximity to a cannula used for electrosurgery.

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