カイダ　ケンイチ   KAIDA Kenichi   海田　賢一    所属   埼玉医科大学  医学部 総合医療センター　脳神経内科    職種   教授
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読あり
表題	Far-field potentials in hypothenar motor unit number estimation
掲載誌名	正式名：Muscle and Nerve ISSNコード：0148639X
巻・号・頁	48(2),191-197頁
著者・共著者	Mana Higashihara,Masahiro Sonoo,Tomotaka Yamamoto,Yasuomi Kawamura,Yu Nagashima,Yasuo Terao,Kenichi Kaida,Fumihiko Kimura,Yoshikazu Ugawa,Shoji Tsuji
発行年月	2013/08
概要	Introduction: Contamination by far-field potentials (FFPs) may interfere with motor unit number estimation (MUNE) in the ulnar nerve. Methods: Surface motor unit potentials (SMUPs) from 29 spinal and bulbar muscular atrophy (SBMA) patients and 27 control subjects were classified into SMUPs from the abductor digiti minimi muscle (ADM SMUPs) or non-ADM SMUPs, based on the waveform patterns from 3-channel recordings. Results: The mean areas of the ADM SMUPs and non-ADM SMUPs in control subjects were 219.0 ± 131.3 and 63.7 ± 48.5 μVms, respectively. In SBMA patients they were 1988.9 ± 999.4 and 222.7 ± 125.7 μVms, respectively. The percentages of non-ADM SMUPs were 68 ± 22% in controls and 84 ± 15% in SBMA patients. Conclusions: Non-ADM SMUPs generated mainly by FFPs often had a negative onset in the routine lead and were indistinguishable from ADM SMUPs. More frequent exclusion of smaller non-ADM SMUPs in controls by size criteria would reduce the diagnostic yield of MUNE. © 2013 Wiley Periodicals, Inc.
DOI	10.1002/mus.23734
PMID	23381934