シガ　ツヨシ   Shiga Tsuyoshi   志賀　剛    所属   医学部 医学科（東京女子医科大学病院）    職種   客員教授
論文種別	症例報告
言語種別	英語
査読の有無	査読あり
表題	Surface electromyography of myopotential oversensing provoked by simultaneous straining and leftward twisting in a patient with an implantable cardioverter defibrillator.
掲載誌名	正式名：Heart and Vessels 略　 称：Heart Vessels ISSNコード：0910-8327/1615-2573
掲載区分	国内
出版社	Springer Japan
巻・号・頁	32(3),pp.364-368
著者・共著者	AJIRO Yoichi†*, SHIGA Tsuyoshi, SHODA Morio, HAGIWARA Nobuhisa
発行年月	2017/03
概要	An important step in diagnosing myopotential oversensing is to confirm its reproducibility using specific provocation maneuvers. Although most maneuvers involve the co-contraction of many muscles, no attempt has been made to assess relevant muscle activities by electromyography. We describe a case with an implantable cardioverter defibrillator (ICD) whose myopotential oversensing was provoked by simultaneous straining and leftward twisting. Simultaneous recordings from real-time ICD telemetry and myopotentials of the rectus abdominis, oblique abdominis, and diaphragm on electromyography during the provocation maneuvers were conducted. It was shown that all three muscles contracted simultaneously during the provocation maneuvers; the diaphragm activity was the main source of noise oversensing, and the twist itself caused oversensing possibly due to the change in the position of the lead. In conclusion, the electromyographic assessment of relevant muscle activities may be useful in assessing each muscle's role and its contribution to myopotential oversensing, especially in a patient whose myopotential oversensing requires complex maneuvers to be provoked.
DOI	10.1007/s00380-016-0888-9
PMID	27576324