Abstract
There is controversy regarding the initial pathology of tabes dorsalis. In a patient with early tabes dorsalis, tibial nerve somatosensory evoked potentials elicited normal P15, a delayed traveling peak in the lumbar bipolar leads, and absent subsequent components. Based on the comparison with normative data and stimulation at different intensities, the authors conclude that only the slower conducting antidromic motor volleys are preserved, whereas the dorsal root is damaged at its distal end.
Publication types
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Case Reports
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Research Support, Non-U.S. Gov't
MeSH terms
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Adult
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Disease Progression
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Electric Stimulation
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Electrodiagnosis
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Evoked Potentials
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Evoked Potentials, Somatosensory* / physiology
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Gait Disorders, Neurologic / diagnosis
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Gait Disorders, Neurologic / etiology
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Gait Disorders, Neurologic / physiopathology
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Ganglia, Spinal / physiopathology
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Humans
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Male
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Neural Conduction / physiology
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Neuralgia / etiology
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Neuralgia / pathology
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Neuralgia / physiopathology
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Neurons, Afferent / physiology
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Penicillin G / therapeutic use
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Reaction Time / physiology
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Recovery of Function
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Reflex, Abnormal / physiology
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Sensation Disorders / diagnosis
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Sensation Disorders / etiology
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Sensation Disorders / physiopathology*
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Somatosensory Disorders / diagnosis
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Somatosensory Disorders / etiology
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Somatosensory Disorders / physiopathology
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Spinal Nerve Roots / physiopathology*
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Tabes Dorsalis / diagnosis*
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Tabes Dorsalis / drug therapy
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Tabes Dorsalis / physiopathology*
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Tibial Nerve / physiopathology*
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Treatment Outcome