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Related Experiment Videos

Tabes dorsalis: electrodiagnostic features.

P D Donofrio1, F O Walker

  • 1Department of Neurology, Wake Forest University, Bowman Gray School of Medicine, Winston-Salem, NC 27103.

Journal of Neurology, Neurosurgery, and Psychiatry
|August 1, 1988
PubMed
Summary
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Electrodiagnostic studies in tabes dorsalis are reported for the first time. Absent H-reflexes and abnormal tibial nerve somatosensory evoked responses (SEPs) indicate posterior column dysfunction, aligning with known pathology.

Area of Science:

  • Neurology
  • Neurophysiology

Background:

  • Tabes dorsalis, a late neurosyphilis manifestation, primarily affects the posterior columns of the spinal cord.
  • Previous electrodiagnostic data for tabes dorsalis were lacking, hindering objective assessment of nerve function.

Observation:

  • A single patient with clinically diagnosed tabes dorsalis underwent comprehensive electrodiagnostic testing.
  • Nerve conduction studies and median nerve somatosensory evoked responses (SEPs) were performed.

Findings:

  • The patient exhibited normal nerve conduction studies and median nerve SEPs.
  • H-reflexes, a measure of spinal reflex activity, were absent.
  • Tibial nerve SEPs revealed abnormalities consistent with posterior column dysfunction.

Implications:

Related Experiment Videos

  • These findings establish a baseline for electrodiagnostic assessment in tabes dorsalis.
  • The results correlate electrophysiological deficits with the known neuropathology of the condition.
  • This study highlights the utility of specific electrodiagnostic tests in diagnosing and understanding tabes dorsalis.