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为了阐明急性心肌梗塞(AMI)时晚电位(L-ate Potentials;LPs)的出现与定性心律失常如何相关,使用信号叠加平均技术描记LPs对12例AMI患者连续进行研究.AMI7日内有或无室性心律失常(VA)患者的LPs均无明显差别,所有的平均值比较短(15.9±5.0毫秒).在第14天,根据LP时间清楚地分为两组.一组5例,LPs时间较长≥20毫秒(平均24.3±1.5毫秒)显示得分较高的VA;另一组7例,LPs时间较短<20毫秒(平均15.0±2.1毫秒),有得分较低的VA。在统计学上两组
In order to elucidate how the presence of L-ate Potentials (LPs) correlates with qualitative arrhythmia in acute myocardial infarction (AMI), 12 consecutive patients with AMI were studied using signal-weighted averaging techniques for the detection of LPs. There was no significant difference in LPs between patients with arrhythmia (VA) and all the mean values were shorter (15.9 ± 5.0 ms), and were clearly divided into two groups according to LP time on day 14. One group of 5 patients had longer LPs Longs ≥20 msec (24.3 ± 1.5 msec on average) showed higher VA scores; in the other 7, LPs had shorter durations <20 msec (mean 15.0 ± 2.1 msec) with lower VA scores. Statistically two groups