3-2-06. Somatosensory Evoked Potentials (SEPs) in Vitamin B12 deficiency

Vitamin B12 deficiency mainly affects the dorsal column. In this study, we investigated which part of the sensory pathway is affected in vitamin B12 deficiency using NCS and SEPs. We retrospectively reviewed EMG database of Teikyo University and Mitsui Memorial Hospital from 2008 to 2016, and enrolled patients who presented with sensory symptoms and/or gait disturbance, and whose serum B12 level was below 170ng/ml. Enrolled were 17 patients. Spinal MRI demonstrated abnormalities in 4/17. NCS was abnormal in 3/15 patients for the sural nerve and in 5/12 patients for the median nerve.

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