Incremental response with high-frequency repetitive nerve stimulation (RNS) in a patient with Lambert-Eaton myasthenic syndrome (LEMS)

Responses to a train of 50 stimulations at 50 Hz in a patient with Lambert-Eaton myasthenic syndrome. Note the low initial CMAP amplitude (0.3 mV) and the marked facilitation to 1.5 mV (400 percent).

Reproduced with permission from: Howard JF, Sanders DB, Massey JM. The electrodiagnosis of myasthenia gravis and the Lambert-Eaton myasthenic syndrome. Neurol Clin 1994; 12:305. Copyright © 1994 Elsevier.

Graphic 58848 Version 6.0

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