业已证实,QT离散度(QTd)对急性心肌梗死(AMI)严重并发症的发生有重要预测价值。但多数研究限于入院1次心电图(ECG)分析,对QTd的动态变化报道甚少。本研究分析了112例AMI不同时间的心电图498份,旨在探讨QTd的动态演变规律和临床意义。 1 资料与方法 AMI住院患者112例,男80人,女32人,平均年龄(68.08±11.03)岁。死亡25人,生存87人。按梗死部位分:前 It has been confirmed that QT dispersion (QTd) has important predictive value for the occurrence of severe complications of acute myocardial infarction (AMI). However, most of the studies are limited to one electrocardiogram (ECG) analysis on admission, and little is reported about the dynamic changes of QTd. In this study, we analyzed 498 electrocardiograms of 112 patients with AMI at different times to explore the dynamic evolution and clinical significance of QTd. 1 Materials and Methods AMI hospitalized 112 patients, 80 males and 32 females, mean age (68.08 ± 11.03) years old. 25 people died, 87 people survived. Divided by the infarction: before