有无梗死前心绞痛的急性心肌梗死的比较

目的：比较有无梗死前心绞痛的急性心肌梗死（AMI）的发病年龄、CK峰值时间、QTd时间及并发症、合并症、既往史等。方法：收休1992年1月至2001年1月我院急性心肌梗死（AMI）病历共166例，根据梗死前48h内有无心绞痛无梗死前心绞痛组（A组）及有梗死前心绞痛组（B组），比较分析。结果：A组发病年龄明显低于B组，且A组合并糖尿病便数、CK峰值时间、心电图、QTd时间、室速、室颤及泵衰竭、心源性猝死的发生经均高于B组，且两组比较有显著性差异。结论：发病前心绞痛可能导致缺血预适应的产生，对急性心肌梗死后的心脏起保护作用。

Comparing the angina pectoris in AMI patients with and without AP

Objective: To compare the age,time of peak CK and QTd,the complications and past medicine history between the patients of acute myocardial infarction (AMI) with prodromal angina pectoris (AP) and those without AP. Method: 166 patients with AMI were divided into group A (89 cases) with prodromal AP and group B (77 cases) without AP . The comparison was carried out. Result: the average age of group A is abviously younger than that of group B. the amount of those cases complicated by diabetes. time of peak CK and QTd and the incidence of ventricular tachycardia, ventricular fibrillation, congestive heart failure and sudden cardiac death are higher than those of group B, there were significant differenes. Conclusion: The prodromal angina pectoris could synergetically protect the cardiac muscle in patients with acute myocardial infarction because of ischemic preconditioning.