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姆指紀錄橈神經、正中神經感覺電位之正常值及應用於腕道症候羣

Normal Value of the Radial and Median Sensory Action Potentials Recorded on the Thumb and its Application to the Carpal Tunnel Syndrome

摘要


慈濟醫院神經內科收集24名成人,於姆指紀錄橈神經及正中神經之感覺電位共得到30組正常值,計算後發現橈神經及正中神經之頂潛期差值平均為0.13±0.12 msec。腕道症候羣的病人可於手腕橈側施與電刺激而獲得雙峯波形之感覺電位。應用姆指紀錄感覺電位是為簡單、快捷的檢查方法,可作為篩檢腕道症候羣之用。

並列摘要


Carpal tunnel syndrome is a common entrapment neuropathy. Many Kinds of techniques have been developed for its identification. We collected 24 normal adults and 30 normal nerves to evaluate the radial and median sensory action potentials (SAP) recorded on the thumb, on wrist stimulation. The onset latency, peak latency, duration and amplitude of the radial and median SAP were analyzed. The interpeak latency of the two SAP was 0.13±0.12 msec. This interpeak latency may be very useful for early detection of carpal tunnel syndrome. An SAP of double peaks could be elicited on wrist stimulatin in carpal tunnel syndrome due to delaying of the median SAP.

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