Hosoya Y, Ikeda K, Komatsu T, Yamaki M, Kubota I
Department of Nursing, Faculty of Health Science, Yamagata School of Health Science,
J Electrocardiol. 2001 Jan;34(1):15-24. doi: 10.1054/jelc.2001.22026.
There were few studies on the spectral analysis of multiple-lead epicardial electrograms in chronic myocardial infarction. Spectral analysis of multi-lead epicardial electrograms was performed in 6 sham-operated dogs (N group) and 8 dogs with 4-week-old myocardial infarction (MI group). Four weeks after the ligation of left anterior descending coronary artery, fast Fourier transform was performed on 60-lead epicardial electrograms, and then inverse transform was performed on 5 frequency ranges from 0 to 250 Hz. From the QRS onset to QRS offset, the time integration of unsigned value of reconstructed waveform was calculated and displayed as AQRS maps. On 0-25 Hz AQRS map, there was no significant difference between the 2 groups. In the frequency ranges of 25-250 Hz, MI group had significantly smaller AQRS values than N group solely in the infarct zone. It was shown that high frequency potentials (25-250 Hz) within QRS complex were reduced in the infarct zone.
关于慢性心肌梗死中多导联心外膜心电图频谱分析的研究较少。对6只假手术犬（N组）和8只患有4周龄心肌梗死的犬（MI组）进行了多导联心外膜心电图的频谱分析。在左冠状动脉前降支结扎4周后，对60导联心外膜心电图进行快速傅里叶变换，然后在0至250Hz的5个频率范围内进行逆变换。从QRS波起始到QRS波终末，计算并显示重建波形无符号值的时间积分，以AQRS图表示。在0-25Hz的AQRS图上，两组之间无显著差异。在25-250Hz频率范围内，MI组仅在梗死区域的AQRS值明显小于N组。结果表明，梗死区域QRS复合波内的高频电位（25-250Hz）降低。
