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Rehabilitation Practice and Science

Translated Title

青年人上肢複合肌肉動作電位的擴散情形

Abstract

The aim of this investigation is to define the normal values and the boundaries of compound muscle action potential (CMAP) dispersion of a specific age group in Chinese population. Measurements were made from median and ulnar motor nerves of 30 normal volunteers, age between 25-35 years. Supramaximal stimulations were applied to wrist, elbow and axilla of median and ulnar nerves individually. Negative peak areas, amplitudes and durations were recorded and the percentage of dispersion were calculated for each parameter. The results show that the percentage of negative duration, amplitude and area decay between wrist and below-elbow stimulation sites are 2.89%, 5.12% and 7.68% in median nerve; 1.34%, 6.96% and 8.30% in ulnar nerve. Dispersion ratios between wrist and axilla stimulation sites are 6.99%, 4.46% and 1.98% in median nerve; 3.98%, 14.66% and 13.66% in ulnar nerve. The conclusion of this study is that the negative areas and amplitudes decrease while the negative durations increased in proximal stimulations. These data should increase the accuracy of clinical examination in differentiating normal subjects from demyelinating neuropathies.

Language

Traditional Chinese

First Page

15

Last Page

21

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