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ＱＴ间期离散度（ＱＴｄ）是普通体表心电图ＱＴ最大间期（ＱＴｍａｘ）与ＱＴ最小间期（ＱＴｍｉｎ）的差值，与左室射血功能有关［１］。本研究主要通过观察老年人急性心肌梗死、老年及非老年健康人者ＱＴｄ测定，以探讨ＱＴ间期变异情况及其与心肌供血之间关系。１ 对象与
QT interval dispersion (QTd) is the difference between QTmax and QTmin of general body surface electrocardiogram, which is related to left ventricular ejection function [1]. This study mainly through the QTd measurement of elderly acute myocardial infarction, elderly and non-elderly healthy people to explore QT interval variation and its relationship with myocardial blood supply. 1 object with