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Your search keyword '"Misawa, Sonoko"' showing total 41 results
Start Over Author "Misawa, Sonoko" Publisher elsevier ireland ltd
41 results on '"Misawa, Sonoko"'

25. Effects of low frequency filtering on distal compound muscle action potential duration for diagnosis of CIDP: A Japanese-European multicenter prospective study.

Author

UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie, Mitsuma, Satsuki, Van den Bergh, Peter, Rajabally, Yusuf A, Van Parijs, Vinciane, Martin-Lamb, Darren, Sonoo, Masahiro, Inaba, Akira, Shimizu, Toshio, Isose, Sagiri, Sato, Yasunori, Komori, Tetsuo, Misawa, Sonoko, Kuwabara, Satoshi, Tokyo Metropolitan Neuromuscular Electrodiagnosis Study Group, UCL - SSS/IONS/NEUR - Clinical Neuroscience, UCL - (SLuc) Service de neurologie, Mitsuma, Satsuki, Van den Bergh, Peter, Rajabally, Yusuf A, Van Parijs, Vinciane, Martin-Lamb, Darren, Sonoo, Masahiro, Inaba, Akira, Shimizu, Toshio, Isose, Sagiri, Sato, Yasunori, Komori, Tetsuo, Misawa, Sonoko, Kuwabara, Satoshi, and Tokyo Metropolitan Neuromuscular Electrodiagnosis Study Group

Abstract

OBJECTIVE: The duration of the distal compound muscle action potential (DCMAP) is a useful index to detect demyelination in the distal nerve segments. However in published electrodiagnostic criteria for chronic inflammatory demyelinating polyneuropathy (CIDP), the cut-off values of DCMAP duration are defined using an EMG low frequency filter of only 20 Hz. We aimed to provide widely-available reference data using several low cut filters. METHODS: In 13 Japanese and European tertiary centers, DCMAP duration data using 2, 5, 10, and 20 Hz low frequency filters were prospectively collected from 147 normal controls, 59 patients with typical CIDP, and 100 with diabetic polyneuropathy. Optimal cut-off values were calculated with receiver-operating characteristic curves, offering 100% specificity versus normal controls. RESULTS: The higher low frequency filter was associated with significantly shorter DCMAP duration in all groups. For CIDP diagnosis, the calculated cut-off values had a sensitivity ranging from 51% to 66%, and a specificity versus diabetic neuropathy from 96% to 98%. CONCLUSIONS: Our results show that DCMAP duration is largely dependent on low frequency filter settings, but is a useful index for CIDP diagnosis when the cut-off values are properly determined at each filter setting. SIGNIFICANCE: Our data provide the systematic reference values of DCMAP duration for CIDP diagnosis available for most EMG laboratories.

Published
2015

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