Determination of Human Penile Electrical Resistance
J Sex Med. 2010 May 26. [Epub ahead of print]
Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan.
Introduction. Electrosurgery has been a surgical application since the late 19th century. Although many urologists take this daily application for granted, the effects of electrical treatment on penile nerves and vessels have not been well documented.
Methods. Measurement of the electrical characteristics of three human penises in order to create models to analyze the effect of electricity on penile nerves and vessels.
Results. Electrical resistivity (rho) of the penile shaft is 127.14 Omega . cm at 500 kHz. Electrical current density (J) of the penis shaft is 71.06 mA/cm(2), nerve (60.23 mA/cm(2)), vessel (67.93 mA/cm(2)), and return electrode (2.11 mA/cm(2)). Electrical field strength (E) of the whole penis shaft is 9.03 volt/cm. The proportion of generated heat on the penis is four times as much as on other body parts of the circuit.
Conclusions. Potential and subclinical injury to erectile tissue caused by electrosurgery on the penis cannot be underestimated.