Characterization and mitigation of stray radiofrequency currents during monopolar resectoscopic electrosurgery

Journal of Minimally Invasive Gynecology
George A VilosAngelos G Vilos

Abstract

To determine patterns and range of stray radiofrequency (RF) currents flowing through the working element of monopolar resectoscopes during routine endometrial rollerball ablation or resection; and to determine whether straightforward modifications of the uterine resectoscope and the application of RF monitoring could provide a safe pathway for such currents. Prospective in vivo measurements (Canadian Task Force classification II-1). University-affiliated teaching hospital. Twelve women undergoing resectoscopic surgery. During routine resectoscopic surgery using 1.5% glycine irrigant solution, three modified 26F Storz resectoscope working elements (model 27070E) were adapted to be continuously monitored with an Encision AEM device for excessive capacitive coupling and other stray currents from insulation failure. Active electrodes used were 3 mm and 5 mm rollberballs and 8 mm-diameter cutting loops powered by ERBE or Valleylab generators at 120 W. Active and working element currents were monitored by Pearson current transformers followed by root-mean-squared detectors based on the Analog Devices AD-637 integrated circuit. Data were recorded using a Fluke 199C oscilloscope, then serially transferred to a notebook computer and an...Continue Reading

References

Feb 1, 1973·Anesthesiology·C M BeckerJ Hedley-Whyte
Feb 1, 1997·The Journal of the American Association of Gynecologic Laparoscopists·G A VilosD Huband
Dec 3, 1998·Journal of Healthcare Risk Management : the Journal of the American Society for Healthcare Risk Management·P G PerantinidesV S Katzman

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Citations

Aug 6, 2011·Journal of Endourology·Carlos E Mendez-ProbstStephen E Pautler
Sep 29, 2012·AORN Journal·Paula J Morton
Sep 20, 2011·Journal of Minimally Invasive Gynecology·Basim Abu-RafeaHazem Al-Mandeel
Aug 3, 2010·Obstetrics and Gynecology Clinics of North America·Malcolm G Munro
May 7, 2015·Best Practice & Research. Clinical Obstetrics & Gynaecology·Francois Closon, Togas Tulandi
Oct 13, 2015·Clinical Obstetrics and Gynecology·Malcolm G Munro, Lee A Christianson
May 5, 2007·Journal of Minimally Invasive Gynecology·George A Vilos
Jun 11, 2009·Current Opinion in Obstetrics & Gynecology·Giancarlo Garuti, Massimo Luerti

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