Journal of the neurological sciences · 2016
Sonographic evaluation of peripheral nerves in subtypes of Guillain-Barré syndrome.
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Mori Atsuko, Nodera Hiroyuki, Takamatsu Naoko, Maruyama-Saladini Keiko, Osaki Yusuke, Shimatani Yoshimitsu, Kaji Ryuji
Аннотация
BACKGROUND: Sonography of peripheral nerves can depict alteration of nerve sizes that could reflect inflammation and edema in inflammatory and demyelinating neuropathies. Guillain-Barré syndrome (GBS). Information on sonographic comparison of an axonal subtype (acute motor [and sensory] axonal neuropathy [AMAN and AMSAN]) and a demyelinating subtype (acute inflammatory demyelinating polyneuropathy [AIDP]) has been sparse.
MATERIAL AND METHODS: Sonography of peripheral nerves and cervical nerve roots were prospectively recorded in patients with GBS who were within three weeks of disease onset.
RESULTS: Five patients with AIDP and nine with AMAN (n=6)/AMSAN (n=3) were enrolled. The patients with AIDP showed evidence of greater degrees of demyelination (e.g., slower conduction velocities and increased distal latencies) than those with AMAN/AMSAN. The patients with AIDP tended to show enlarged nerves in the proximal segments and in the cervical roots, whereas the patients with AMAN/AMSAN had greater enlargement in the distal neve segment, especially in the median nerve (P = 0.03; Wrist-axilla cross-sectional ratio).
CONCLUSION: In this small study, two subtypes of GBS showed different patterns of involvement that might reflect different pathomechanisms.
MATERIAL AND METHODS: Sonography of peripheral nerves and cervical nerve roots were prospectively recorded in patients with GBS who were within three weeks of disease onset.
RESULTS: Five patients with AIDP and nine with AMAN (n=6)/AMSAN (n=3) were enrolled. The patients with AIDP showed evidence of greater degrees of demyelination (e.g., slower conduction velocities and increased distal latencies) than those with AMAN/AMSAN. The patients with AIDP tended to show enlarged nerves in the proximal segments and in the cervical roots, whereas the patients with AMAN/AMSAN had greater enlargement in the distal neve segment, especially in the median nerve (P = 0.03; Wrist-axilla cross-sectional ratio).
CONCLUSION: In this small study, two subtypes of GBS showed different patterns of involvement that might reflect different pathomechanisms.