Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, North Carolina.
Center for Dermatology Research, Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina.
J Am Acad Dermatol. 2014 Apr;70(4):607.e1-607.e12. doi: 10.1016/j.jaad.2013.09.055.
Electrosurgical currents can be delivered to tissue in monopolar or bipolar and monoterminal or biterminal modes, with the primary difference between these modes being their safety profiles. A monopolar electrosurgical circuit includes an active electrode and a dispersive (return) electrode, while there are 2 active electrodes in bipolar mode. In monoterminal mode, there is an active electrode, but there is no dispersive electrode connected to the patient's body and instead the earth acts as the return electrode. Biterminal mode uses a dispersive electrode connected to the patient's body, has a higher maximum power, and can be safer than monoterminal mode in certain situations. Electrosurgical units have different technologies for controlling the output power and for providing safety. A thorough understanding of these technologies helps with a better selection of the appropriate surgical generator and modes.
电外科电流可以以单极或双极、单极或双极、单极或双极模式传输到组织，这些模式的主要区别在于它们的安全特性。单极电外科电路包括一个活动电极和一个分散（返回）电极，而双极模式有 2 个活动电极。在单极模式下，有一个活动电极，但没有与患者身体相连的分散电极，而是大地充当返回电极。双极模式使用连接到患者身体的分散电极，具有更高的最大功率，并且在某些情况下比单极模式更安全。电外科设备具有不同的技术来控制输出功率和提供安全性。深入了解这些技术有助于更好地选择合适的手术发生器和模式。
