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Influence of myopotential interference on the Wavelet discrimination algorithm in implantable cardioverter-defibrillator


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タイトル: Influence of myopotential interference on the Wavelet discrimination algorithm in implantable cardioverter-defibrillator
著者: Mizukami, Kazuya 著作を一覧する
Yokoshiki, Hisashi 著作を一覧する
Mitsuyama, Hirofumi 著作を一覧する
Watanabe, Masaya 著作を一覧する
Tenma, Taro 著作を一覧する
Kamada, Rui 著作を一覧する
Takahashi, Masayuki 著作を一覧する
Sasaki, Ryo 著作を一覧する
Maeno, Motoki 著作を一覧する
Tsutsui, Hiroyuki 著作を一覧する
キーワード: Implantable cardioverter-defibrillator
Tachycardia discrimination
Myopotential interference
発行日: 2017年 6月
出版者: Elsevier
誌名: Journal of arrhythmia
巻: 33
号: 3
開始ページ: 214
終了ページ: 219
出版社 DOI: 10.1016/j.joa.2016.08.005
抄録: Background: Wavelet is a morphology-based algorithm for detecting ventricular tachycardia. The electrogram (EGM) source of the Wavelet algorithm is nominally programmed with the Can-RV coil configuration, which records a far-field ventricular potential. Therefore, it may be influenced by myopotential interference. Methods: We performed a retrospective review of 40 outpatients who had an implantable cardioverter-defibrillator (LCD) with the Wavelet algorithm. The percent-match score of the Wavelet algorithm was measured during the isometric chest press by pressing the palms together. We classified patients with percent-match scores below 70% due to myopotential interference as positive morphology change, and those with 70% or more as negative morphology change. Stored episodes of tachycardia were evaluated during the follow-up. Results: The number of patients in the positive morphology change group was 22 (55%). Amplitude of the Can-RV coil EGM was lower in the positive morphology change group compared to that in the negative group (3.9 +/- 1.3 mV vs. 7.4 +/- 1.6 mV, P=0.0015). The cut-off value of the Can-RV coil EGM was 5 mV (area under curve, 0.89). Inappropriate detections caused by myopotential interference occurred in two patients (5%) during a mean follow-up period of 49 months, and one of them received an inappropriate LCD shock. These patients had exhibited positive morphology change. Conclusions: The Wavelet algorithm is influenced by myopotential interference when the Can-RV coil EGM is less than 5 mV.
資料タイプ: article
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

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