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 A new maneuver for repetitive nerve stimulation testing in the trapezius muscle
掲載誌名 正式名:Muscle and Nerve
ISSNコード:0148639X
巻・号・頁 47(5),668-672頁
著者・共著者 Go Ogawa,Masahiro Sonoo,Yuki Hatanaka,Ken-Ichi Kaida,Keiko Kamakura
発行年月 2013/05
概要 Introduction: The repetitive nerve stimulation (RNS) test in the trapezius muscle is used widely for the evaluation of myasthenia gravis. However, pseudofacilitation is often difficult to avoid in this muscle and may compromise the detection of small decremental responses. We have devised a new maneuver to reduce pseudofacilitation. Methods: Using our maneuver, the shoulder of a supine subject is elevated passively and is held firmly by the examiner. Four conventional maneuvers as well as ours were compared with regard to pseudofacilitation that was maximal at the second wave in 14 control subjects. Results: Pseudofacilitation at the second and fourth waves was the smallest using our maneuver. Up to 15% pseudofacilitation was observed using the other maneuvers. Conclusion: Pseudofacilitation in the trapezius muscle is mainly due to shortening of the muscle belly. It can be reduced greatly by shortening the muscle in advance. © 2012 Wiley Periodicals, Inc.
DOI 10.1002/mus.23664
PMID 23512225