Body Surface Two-Dimensional Spectral Map of Atrial Fibrillation Using Vector-Projected 187 Channel Electrocardiography

• Nakai Kenji

  Department of Internal Medicine of Dentistry, Iwate Medical University

• Itoh Manabu

  Department of Internal Medicine of Dentistry, Iwate Medical University

• Okabayashi Hitoshi

  Department of Cardiac Surgery, Iwate Medical University

• Tsuboi Junichi

  Department of Cardiac Surgery, Iwate Medical University

• Mitsunaga Yoshino

  Department of Cardiac Surgery, Iwate Medical University

• Komatsu Takashi

  Department of Cardiology, Iwate Medical University

• Yoshioka Kunihiro

  Department of Radiology of Memorial Heart Center, Iwate Medical University

抄録

Atrial cycle length during atrial fibrillation and flutter waves may be correlated with atrial refractoriness and organization. The nature of the frequency by spectral analysis may reflect a profile of atrial cycle length. In this study, we developed a novel body surface 2-dimensional spectral map during fibrillation using vector-projected 187 channel ECG (187ch VP-ECG).<br>The study consisted of 28 patients (24 with atrial fibrillation (AFIB) and 4 atrial flutter (AFL) with valvular heart disease). We performed spectral analysis by maximum entropy modeling (MEM) in 4 second nonaveraged 187ch electrical current waves by 187ch VP-ECG. Body surface spectral features were displayed according to the frequency and power magnitude components. We verified the accuracy of the spectral features by a 64ch magnetocardiography (MCG). <br>The average dominant frequency in AFL by 187ch VP-ECG was lower than those in AFIB (4.6 ± 0.9 Hz in AFL, 7.2 ± 0.9 Hz in AFIB, P < 0.01). Comparison of average dominant frequency between 187ch VP-ECG and 64 ch MCG demonstrated good agreement (y = 0.86x+0.84, r² = 0.89, P < 0.0001). Body surface 2-dimensional spectral features demonstrated homogenous spectrum patterns in AFL, and in-homogenous spectrum patterns in AFIB.<br>In conclusion, novel body surface spectral mapping using 187ch VP-ECG may represent a 2-dimensional spectral feature that may be related to atrial refractoriness and organization.

収録刊行物

• International Heart Journal

  International Heart Journal 53 (1), 5-10, 2012

  一般社団法人 インターナショナル・ハート・ジャーナル刊行会

キーワード

• Atrial fibrillation
• Body surface map
• Vector projection
• Spectral analysis
• Magnetocardiography

詳細情報

• CRID: 1390001205224278528
• NII論文ID: 130001917170
• DOI: 10.1536/ihj.53.5
• COI: 1:STN:280:DC%2BC383psVWjtw%3D%3D
• ISSN: 13493299
• ISSN: 13492365
• PubMed: 22398669
• Web Site: http://www.jstage.jst.go.jp/article/ihj/53/1/53_1_5/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2013012166
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • PubMed
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可