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测定７１例老年急性心肌梗死（ＡＭＩ）患者的ＱＴ离散度（ＱＴｄ）、ＱＴｃ离散度（ＱＴｃｄ），以探讨其与泵衰竭的关系。结果显示泵衰竭室颤组（ｎ＝１０）的最大ＱＴｃ间期、ＱＴｄ、ＱＴｃｄ显著大于泵衰竭无室颤组（ｎ＝２１）和对照组（ｎ＝４０），泵衰竭无室颤组的ＱＴｄ、ＱＴｃｄ显著大于对照组。提示最大ＱＴｃ间期延长和ＱＴｄ、ＱＴｃｄ增大与ＡＭＩ泵衰竭患者室颤的发生密切相关，观察ＱＴｄ和ＱＴｃｄ对判断老年人ＡＭＩ早期泵功能和预后有一定价值。
The QTd and QTc Dispersion (QTcd) were measured in 71 elderly patients with acute myocardial infarction (AMI) to investigate their relationship with pump failure. The results showed that the maximum QTc interval, QTd and QTcd in pump failure VF group were significantly greater than those in VF pump failure group (n = 21) and control group (n = 40) QTd, QTcd was significantly greater than the control group. It is suggested that the prolongation of maximum QTc interval and the increase of QTd and QTcd are closely related to the occurrence of ventricular fibrillation in patients with AMI pump failure. It is of great value to observe QTd and QTcd in judging the early pump function and prognosis of AMI in elderly patients.