How is needle electromyography used in the workup of Lambert-Eaton myasthenic syndrome (LEMS)?

Updated: May 23, 2019
  • Author: David E Stickler, MD; Chief Editor: Nicholas Lorenzo, MD, MHA, CPE  more...
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Answer

Conventional needle EMG in LEMS demonstrates markedly unstable motor unit action potentials, which vary in shape during voluntary activation.


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