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Related Experiment Videos

[Electrophysiolgical diagnosis for multiple sclerosis].

Tomomi Kurokawa1, Jun-ichi Kira, Shozo Tobimatsu

  • 1Department of Clinical Neurophysiology, Graduate School of Medical Sciences, Faculty of Medicine, Kyushu University.

Nihon Rinsho. Japanese Journal of Clinical Medicine
|September 10, 2003
PubMed
Summary

Evoked potentials (EPs) help detect lesions in multiple sclerosis (MS) patients, even those without symptoms. Multimodality EPs offer a comprehensive evaluation of sensory and motor systems in MS diagnosis.

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Area of Science:

  • Neuroscience
  • Clinical Electrophysiology

Background:

  • Evoked potentials (EPs) are crucial diagnostic tools in neurology.
  • Common EPs include brainstem auditory evoked potentials (BAEPs), somatosensory evoked potentials (SSEPs), visual evoked potentials (VEPs), and motor evoked potentials (MEPs).

Purpose of the Study:

  • To review EP findings in Caucasian and Japanese patients with multiple sclerosis (MS).
  • To assess the utility of EPs in confirming and documenting lesions, including clinically unsuspected ones.
  • To evaluate the role of multimodality EPs in assessing sensory and motor systems.

Main Methods:

  • Review of EP findings in MS patients.
  • Analysis of abnormality rates for various EPs (median nerve SSEP, posterior tibial nerve SSEP, upper/lower limb MEP, PVEP, BAEP) in Japanese MS patients.

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  • Assessment of the frequency of clinically unsuspected lesions detected by EPs.

    • Main Results:

    • EPs confirmed lesions in MS patients and identified clinically unsuspected lesions in approximately 30% of cases.
    • Abnormality rates varied among EPs in Japanese MS patients: 10.3% (median nerve SSEP) to 56.1% (lower limb MEP).
    • Findings align with the increasing prevalence of MS in Japan.

    Conclusions:

    • EPs are valuable for diagnosing MS and detecting lesions, including silent ones.
    • Multimodality EPs provide a comprehensive assessment of neurological involvement in MS.
    • Advanced electrophysiological methods may further aid MS diagnosis and evaluation.