Body Surface Two-Dimensional Spectral Map of Atrial Fibrillation Using Vector-Projected 187 Channel Electrocardiography
Body Surface Two-Dimensional Spectral Map of Atrial Fibrillation Using Vector-Projected 187 Channel Electrocardiography
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DOI：
10.1536/ihj.53.5
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发表时间：
2012-01-01
影响因子：
1.5
通讯作者：
Yoshioka, Kunihiro
中科院分区：
文献类型：
--
作者：
Nakai, Kenji;Itoh, Manabu;Yoshioka, Kunihiro
心房颤动和扑动波期间的心房周期长度可能与心房不应性和机化相关。通过频谱分析的频率的性质可以反映心房周期长度的轮廓。本研究应用187通道心电图（187 chVP-ECG）建立了一种新的心房颤动时体表二维频谱图，对28例患者（24例心房颤动，4例心房扑动）进行了研究。我们对187通道VP-ECG的4秒非平均187通道电流波进行了最大熵建模（MEM）频谱分析。根据频率和功率幅值分量显示体表光谱特征。187 chVP-ECG显示AFL的平均主频率低于AFIB（AFL为4.6 ± 0.9Hz，AFIB为7.2 ± 0.9Hz，P < 0.01）。187 chVP-ECG与64 chMCG的平均主频率比较，两者具有良好的一致性（y = 0.86x+0.84，r（2）= 0.89，P < 0.0001）。体表二维频谱特征显示AFL的频谱模式均匀，而AFIB的频谱模式不均匀。总之，使用187 chVP-ECG的新型体表频谱标测可能代表可能与心房不应性和组织相关的二维频谱特征。(Int Heart J 2012; 53：5-10）
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).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).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, r(2) = 0.89, P < 0.0001). Body surface 2-dimensional spectral features demonstrated homogenous spectrum patterns in AFL, and in-homogenous spectrum patterns in AFIB.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. (Int Heart J 2012; 53: 5-10)