Involvement of peripheral sensory fibers in amyotrophic lateral sclerosis: electrophysiological study of 64 cases.

Abstract:

:We report electrophysiological findings of conduction along peripheral sensory fibers in 64 patients with amyotrophic lateral sclerosis. Distribution of the values of action potential amplitudes and conduction velocities of peripheral afferent fibers were significantly lower than in normal age-matched controls. Sensory action potential amplitudes (SAPas) were more affected than sensory conduction velocities (SCVs). When single patients were considered, SAPas were slightly but significantly reduced in 22% of the cases (median nerve 17%, ulnar nerve 11%, and sural nerve 22%). A parallel decrease in SCVs and MCVs in 14 patients in whom the study was repeated over a period of time was also found. All these electrophysiological findings are due to progressive neuronopathy of peripheral sensory fibers. A pathogenetic mechanism is proposed.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Mondelli M,Rossi A,Passero S,Guazzi GC

doi

10.1002/mus.880160208

subject

Has Abstract

pub_date

1993-02-01 00:00:00

pages

166-72

issue

2

eissn

0148-639X

issn

1097-4598

journal_volume

16

pub_type

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