Spatial distribution of late potentials assessed by signal-averaged body surface mapping.
Spatial distribution of late potentials assessed by signal-averaged body surface mapping.
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通过信号平均体表测绘评估晚期电位的空间分布。
DOI：
10.1253/jcj.55.384
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
S. Hosoda
中科院分区：
文献类型：
--
作者：
K. Nakai;C. Itoh;N. Moriai;N. Chiba;T. Suzuki;K. Hiramori;S. Onishi;H. Kasanuki;S. Hosoda
为了评估晚电位（LPs）的空间位置，我们设计了一种新的系统，使用45个胸部单极导联（5 X 9阵列）对信号平均滤波心电图进行体表映射。老年性心肌梗死（MI, N = 8）、致心律失常性右心室发育不良（N = 1）和扩张型心肌病（N = 2）患者的信号被放大并通过数字带通滤波器（60-300Hz）。生成出发图、LP等电位图和LP30区域图并进行叠加。LP30持续时间确定为滤波后的QRS端点与30毫秒前的点之间的部分。LPs等电位图显示明显的正、负区。8例MI的极值与偏离图所示的区域有关，LP30区域图也与偏离区相对应。最重要的是，每种疾病的LP30区域图的空间分布是不同的。综上所述，体表LP等电位图和LP30面积图可以提供LP空间分布的有用信息。
In order to evaluate the spatial location of late potentials (LPs), we designed a new system for the body surface mapping of signal-averaged, filtered ECG using 45 thoracic unipolar leads (5 X 9 array). Signals from patients with old myocardial infarction (MI, N = 8), arrhythmogenic right ventricular dysplasia (N = 1) and dilated cardiomyopathy (N = 2) were amplified and passed through a digital bandpass filter (60-300Hz). Departure maps, LP isopotential maps, and LP30 area maps were generated and superimposed. The LP30 duration was determined as the section between the filtered QRS endpoints and points 30 msec before. Isopotential maps of the LPs showed distinct positive and negative regions. In 8 cases with MI, the extreme was related to the zones indicated by departure maps, and LP30 area maps also corresponded to the departure areas. Most importantly, the spatial distribution for the LP30 area map was different for each type of disease. In conclusion, body surface LP isopotential maps and LP30 area maps may provide useful information concerning the spatial distribution of LPs.