參考電極的位置對於誘發復合肌肉動作電位之影響的定量分析

Quantitative Comparison pf the Effect of Reference Electrode Position in Evoke Compond Muscle Action Potential

張奐(Huann Chang) ； 詹瑞棋(Rai-Chi Chen) ； 徐道昌(Tao-Chang Hsu)

《中華民國復健醫學會雜誌》 13期 (1985/12) Pp. 1-5

摘要

The purpose of this study is to quantitatively compariso of the influence of different reference electrode position on the amplitude, surface area, latency and duration of CMAP during routine NCV studies in radial, ulnar and median nerves. All of these CMAP signals were sent to computer for analysis. The data revealed;(1)In median nerve examination, the surface area and amplitude decreased markedly (p＜0.05 & p＜0.02) when the reference electrode was shifted from MP joint to IP joint of the thumb. (2)In radial nerve study, reference electrode in wrist position has the largest surface area & amplitude, while 1/2 between wrist and active recording showed the smallest surface area and amplitude, (p＜0.01) and duration(p＜0.02). (3)Inulnar verve, there was no significant statistical difference in amplitude, surface area, latency & duration with the reference electrode at MP joint and DIP joint of the little finger.

並列摘要

The purpose of this study is to quantitatively compariso of the influence of different reference electrode position on the amplitude, surface area, latency and duration of CMAP during routine NCV studies in radial, ulnar and median nerves. All of these CMAP signals were sent to computer for analysis. The data revealed;(1)In median nerve examination, the surface area and amplitude decreased markedly (p＜0.05 & p＜0.02) when the reference electrode was shifted from MP joint to IP joint of the thumb. (2)In radial nerve study, reference electrode in wrist position has the largest surface area & amplitude, while 1/2 between wrist and active recording showed the smallest surface area and amplitude, (p＜0.01) and duration(p＜0.02). (3)Inulnar verve, there was no significant statistical difference in amplitude, surface area, latency & duration with the reference electrode at MP joint and DIP joint of the little finger.