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From the Clinical Neurophysiology Laboratories, Department of Neurology, Massachusetts General Hospital and Harvard Medical School, Boston, MA.
Motor conduction velocities of median, ulnar, peroneal, and tibial nerves and sensory conduction velocities of median and ulnar nerves were studied in 30 alcoholic subjects and a similar group of control subjects. The results were compared to sural nerve conduction velocities and late response latencies (H reflex, F response). The latter two techniques improved the diagnostic yield by 20%: Whereas 73% of our patients showed an abnormality of conduction with conventional techniques, 93% had an abnormality of sural nerve conduction, late response latencies, or both. Abnormalities of motor and sensory conduction, which were more prominent in the lower limbs than the arms, could be documented in patients who did not have any clinical evidence of peripheral neuropathy. The electrophysiologic studies performed in the present study suggest that "axonal degeneration" is the underlying pathologic process in alcoholic peripheral nerve disease.
Presented at the twenty-eighth annual meeting of the American Academy of Neurology, Toronto, April 1976.
Address reprint requests to Dr. Shahani, Clinical Neurophysiology Laboratories, Department of Neurology, Massachusetts General Hospital, Boston, MA 02114.
Accepted for publication April 30, 1979.
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