Tucker R D, Schmitt O H, Sievert C E, Silvis S E
Surg Gynecol Obstet. 1984 Jul;159(1):39-43.
Low frequency currents produced incidental to electrosurgical procedures are usually only a minor threat unless they are coupled directly into the heart through a catheter or a thoracic surgical procedure. However, should the low frequency blocking capacitors in the electrosurgical generator fail in the conducting state, extremely dangerous low frequency currents of many milliamperes may flow into the patient. Even with properly functioning capacitors, low frequencies up to several milliamperes may be produced by some generators. The results of this study show that the coagulation mode of operation produces greater amounts of low frequency currents than the "pure cutting" mode at the same power setting. These results also demonstrate that the higher the generator power output, the higher the magnitude of the low frequency currents.
电外科手术过程中产生的低频电流通常只是一个小威胁，除非它们通过导管或胸外科手术直接耦合到心脏。然而，如果电外科发生器中的低频阻断电容器在导通状态下失效，可能会有高达数毫安的极其危险的低频电流流入患者体内。即使电容器功能正常，一些发生器也可能产生高达几毫安的低频电流。这项研究的结果表明，在相同功率设置下，凝血操作模式比“纯切割”模式产生的低频电流更多。这些结果还表明，发生器的功率输出越高，低频电流的幅值就越高。
