[Magnetic stimulation motor evoked potential in patients with Guillain-Barré syndrome].
In 27 patients with Guillain-Barré syndrome (GBS), motor evoked potentials (MEP) were compared with electromyography (EMG), nervous conduction velocity (NCV), F wave and somatosensory evoked potentials (SEP). The positive rate of MEP was 74%, and 83% of EMG. The findings of MEP were consistent with pathological changes of demyelination and clinical distribution of muscle weakness. A good correlation between abnormal MEP and degree of muscle weakness (P < 0.01) was noted. MEP should be regarded as an objective index for diagnosis, differential diagnosis, followup and effect of therapy. MEP is painless and can be done easily and repeated.
Cui
L Y
LY
Department of Neurology, Peking Union Medical College Hospital, Beijing.
D000200:Action Potentials; D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004576:Electromyography; D005071:Evoked Potentials; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D009046:Motor Neurons / Q000502:physiology*; D011129:Polyradiculoneuropathy / Q000175:diagnosis / Q000503:physiopathology*