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Rehabilitation Practice and Science

Translated Title

參考電極位置及主記錄電極面積影響誘複合肌肉動作電位之定量分析研究

Abstract

The purpose of this study is to quantitatively analyze the effect of reference electrode size on the amplitude, surface area, latency and duration of CMAP during routine NCV studies in median and ulnar nerves. We dilivered supramaximal stimulations over the wrist in the median and ulnar nerve examinations and obtained the data of CMAP parameters from APB and ADQ muscles. The data revealed: I)in median nerve examination: (1) The CMAP surface area and amplitude decreased markedly when the reference electrode was shifted from MP joint to IP joint of the thumb or to MP joint of the 5th finger. (2) The CMAP amplitude increased significantly when the monopolar needle was used as the active recording electrode. (3)The CMAP amplitude and surface area decreased when the active recording electrode to tin plate electrode. Ⅱ) in ulnar nerve examination: (1) The CMAP surface area and duration decreased when the reference electrode was shifted from MP joint to DIP joint of the 5th finger. (2) The surface area and amplitude were smaller when the reference electrode was in the MP joint of the thumb. (3) There was no significant difference in amplitude, surface area, duration and latency with the different sizes of active recording electrode.

Language

Traditional Chinese

First Page

15

Last Page

20

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