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QT间期离散度(QTd)是指体表12导联心电图不同导联之间最长QT与最短QT间期的差异程度,JT间期离散度(JTd)是指体表12导联心电图不同导联之间最长JT与最短JT间期的差值,它们均能反映心室肌复极化的不均一性。我们观察、分析了急性心肌梗塞(AMI)患者QTd、JTd的变化及其与室性心律失常发生的关系,现报道如下: 1 临床资料和方法 1.1 临床资料:46例AMI系1996年1月～1997年8月间发病后48小时内就诊的住院患者,均为透壁性AMI,确定AMI按1978年WHO诊断标准。早期室性心律失常统计以AMI三天内为限。
QT interval dispersion (QTd) is the degree of difference between the longest QT and the shortest QT interval between different leads of body lead 12-lead electrocardiogram. JTd is the difference between body lead 12-lead electrocardiogram The difference between the longest JT of the lead and the shortest JT interval, they can reflect the heterogeneity of ventricular repolarization. We observed and analyzed the changes of QTd and JTd in patients with acute myocardial infarction (AMI) and its relationship with the occurrence of ventricular arrhythmias, are reported as follows: 1 Clinical data and methods 1.1 Clinical data: 46 cases of AMI Department of January 1996 ~ Inpatients admitted within 48 hours after the onset of the disease in August 1997 were all transmural AMIs, and the AMI was confirmed by the 1978 WHO diagnostic criteria. Early ventricular arrhythmias AMI limit within three days.