Munro M G, Fu Y S
Department of Obstetrics and Gynecology, University of California, School of Medicine, Los Angeles 90095-1740, USA.
J Reprod Med. 1996 Mar;41(3):143-8.
To evaluate a monopolar electrosurgical loop electrode designed for use at laparoscopy.
A pilot, observational study of cutting effectiveness followed by a nonrandomized comparative study of thermal injury associated with the loop electrode and CO2 vaporization in the rat model. The observer evaluating thermal injury was blind to the energy source used.
The loops cut most effectively with a continuous, sinusoidal, radiofrequency output at 40 W. The depth of coagulative necrosis was similar in the laser vaporization and loop excision groups of lesions when using outputs and power densities commonly attainable at laparoscopy. There was more necrotic debris in the lasered lesions.
While a randomized comparison will be necessary to clarify these results, electrosurgical loop electrodes seem to have a role in a number of gynecologic laparoscopic procedures.
评估一种设计用于腹腔镜检查的单极电外科环形电极。
先进行一项关于切割效果的初步观察性研究，随后在大鼠模型中对与环形电极及二氧化碳汽化相关的热损伤进行非随机对照研究。评估热损伤的观察者对所使用的能量源不知情。
环形电极在40瓦连续、正弦射频输出时切割效果最佳。在使用腹腔镜检查中通常可达到的输出功率和功率密度时，激光汽化组和环形切除组病变的凝固性坏死深度相似。激光治疗的病变中有更多坏死碎片。
虽然需要进行随机对照研究来明确这些结果，但电外科环形电极似乎在一些妇科腹腔镜手术中发挥作用。
