Maness W L, Rober F W, Clark R E, Cataldo E, Haddad A W
J Prosthet Dent. 1979 Oct;42(4):456-60. doi: 10.1016/0022-3913(79)90151-3.
An investigation was designed to determine the differences in the amount of tissue damage produced by variations in the amount of cutting power delivered to the hamster tongue with electrosurgery. By dividing the power of an electrosurgical instrument into 5 W intervals, from the lowest setting which would produce a cut up to the 50 W setting, histometric comparisons were made in the hamster tongue. Histologic analysis showed the following: 1. The 30 W power interval produced less tissue damage than any other power interval. 2. The 25 and 35 W intervals produced significantly greater damage than the intervals from 40 thorugh 50 W. 3. Histologically the experimental defect showed an area of coagulation necrosis approximately 50 mu wide along the margin of the incision. Tissue damage decreased laterally and inferiorly from the surface of the defect except at the 30 W setting, where the damage in the epithelium and the damage in the connective tissue were essentially equal. 4. There is some validity to the sparking-dragging test for setting the power interval of an electrosurgical instrument. 5. Higher power values which produce excessive sparking should be avoided by the clinician during electrosurgery due to the imprecise nature of the clinical incision.
设计了一项研究，以确定电外科手术中传递到仓鼠舌头的切割功率变化所产生的组织损伤量的差异。通过将电外科器械的功率以5瓦为间隔进行划分，从能产生切割的最低设置到50瓦设置，对仓鼠舌头进行了组织测量比较。组织学分析显示如下：1. 30瓦功率区间产生的组织损伤比其他任何功率区间都少。2. 25瓦和35瓦区间产生的损伤明显大于40瓦至50瓦区间。3. 组织学上，实验缺损在切口边缘显示出一个约50微米宽的凝固性坏死区域。除了在30瓦设置时，缺损表面的组织损伤从缺损表面向侧面和下方减少，此时上皮组织和结缔组织的损伤基本相等。4. 电外科器械功率区间设置的火花拖拽测试有一定的有效性。5. 由于临床切口的不精确性，临床医生在进行电外科手术时应避免使用会产生过多火花的较高功率值。
