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Influence of myopotential interference on the Wavelet discrimination algorithm in implantable cardioverter-defibrillator
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| Title: | Influence of myopotential interference on the Wavelet discrimination algorithm in implantable cardioverter-defibrillator |
| Authors: | Mizukami, Kazuya Browse this author | | Yokoshiki, Hisashi Browse this author →KAKEN DB | | Mitsuyama, Hirofumi Browse this author | | Watanabe, Masaya Browse this author | | Tenma, Taro Browse this author | | Kamada, Rui Browse this author | | Takahashi, Masayuki Browse this author | | Sasaki, Ryo Browse this author | | Maeno, Motoki Browse this author | | Tsutsui, Hiroyuki Browse this author →KAKEN DB |
| Keywords: | Implantable cardioverter-defibrillator | | Tachycardia discrimination | | Morphology | | Myopotential interference | | Wavelet |
| Issue Date: | Jun-2017 |
| Publisher: | Elsevier |
| Journal Title: | Journal of arrhythmia |
| Volume: | 33 |
| Issue: | 3 |
| Start Page: | 214 |
| End Page: | 219 |
| Publisher DOI: | 10.1016/j.joa.2016.08.005 |
| Abstract: | 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. |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/67300 |
| Appears in Collections: | 北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 横式 尚司
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