Archives of physical medicine and rehabilitation
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To investigate the main coupling mechanisms involved in stimulus artifact contamination of evoked potential recordings and to suggest techniques that minimize this interference. ⋯ Three major factors that contribute to stimulus artifact contamination of the evoked potential waveform can be identified and minimized by relatively simple clinical techniques.
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Evaluate by electrophysiologic methods the cause of arm weakness and numbness in an agitated patient who struggled against a vest restraint garment. ⋯ Compressive nerve lesions in the axilla should be recognized as a potential complication of vest restraint, especially in combative patients.