Furihata A, Tanigawa N, Ozawa Y
Second Department of Internal Medicine, Nihon University School of Medicine.
Nihon Rinsho. 1995 Feb;53(2):340-6.
Signal-averaging of high resolution electrocardiographic data to identify ventricular late potentials, associated with ventricular tachycardia, has emerged as a useful technique for risk stratification following myocardial infarction. Multiple lead system, filters and criteria have been used in clinical trials. As variations in data analysis are introduced, it is important to assess the impact of the final results and to ensure that criteria for normalcy, appropriate for these variation, are developed if needed. This study compares the results produced by four systems and one system with a different filter used for determination of late potential parameters in the time domain. It is concluded that varying technique and filters significant changes in the values used to identify late potentials on high-resolution electrocardiographic records. These change may have clinical impact. When using this technique in a clinical situation, parameters values, appropriate for the device, and its components should be developed, if needed.
对高分辨率心电图数据进行信号平均以识别与室性心动过速相关的心室晚电位，已成为心肌梗死后风险分层的一项有用技术。临床试验中使用了多导联系统、滤波器和标准。随着数据分析中引入各种变化，评估最终结果的影响并在需要时制定适合这些变化的正常标准非常重要。本研究比较了四个系统以及一个使用不同滤波器在时域中测定晚电位参数的系统所产生的结果。得出的结论是，不同的技术和滤波器会使高分辨率心电图记录上用于识别晚电位的值发生显著变化。这些变化可能具有临床影响。在临床情况下使用该技术时，如有需要，应制定适合该设备及其组件的参数值。
