Peripheral nerve size in normals and patients with polyneuropathy: an ultrasound study.

Abstract:

:Ultrasound has been used for visualizing peripheral nerve pathology. Our goal was to use ultrasound to quantitate the sizes of upper extremity nerves along their length in control subjects and patients with neuropathy. We measured median and ulnar nerve cross-sectional areas (NCSA) in the arms of 190 subjects, including 100 with neuropathies and 90 controls. We found that NCSAs in healthy child and adult controls were greater with increasing height, at proximal sites, and at sites of entrapment. Nerves were enlarged in all Charcot-Marie-Tooth 1A (CMT-1A) (11 of 11; 100%), most chronic inflammatory demyelinating polyneuropathy (CIDP) (31 of 36; 86%), half of Guillain-Barré syndrome (GBS) (8 of 17; 47%), but few axonal neuropathy (7 of 36, 19%) subjects. In GBS, nerve enlargement occurred early and with minimal electrodiagnostic abnormalities in some patients. We conclude that NCSA measured by ultrasound is a quantifiable marker of nerve features that should be corrected for patient characteristics and nerve site. NCSA is generally larger in demyelinating than it is in axonal polyneuropathies.

journal_name

Muscle Nerve

journal_title

Muscle & nerve

authors

Zaidman CM,Al-Lozi M,Pestronk A

doi

10.1002/mus.21431

subject

Has Abstract

pub_date

2009-12-01 00:00:00

pages

960-6

issue

6

eissn

0148-639X

issn

1097-4598

journal_volume

40

pub_type

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