目的 分析J波与心肌梗死预后的关系,探讨缺血性J波者的流行病学及其J波预测急性心肌梗死预后的临床价值.方法 将120例急性心肌梗死患者根据心电图是否存在J波分为观察组与对照组各60例,两组患者首先均采用常规12导联心电图(ECG)检测,再采用动态心电记录器和十二导联动态心电图仪进行24小时动态监测.结果 在流行病学上,两组患者的性别、年龄、舒张压比较,差异均无显著性(P>0.05),两组患者的收缩压以及多血管病变率比较,差异有显著性(P<0.05).两组患者心肌梗死事件差异总体比较差异无显著性(P>0.05),但是个别项目差异有显著性.J波呈顿挫型、振幅高、持续时间长者提示发生心脏事件危险性增加.同时J波振幅高,持续时间长,预示发生急性心肌梗死的危险性大.结论 心肌梗死合并J波综合征可能出现在心肌梗死的急性期,心电图中对J波综合征的诊断可以早期发现高危人群,提高对心源性猝死的防范.%Objective To analyze the relation between J-wave and acute myocardial intarction,and to investigate the epideminlogy of J waves and the the value of J-wave in predicting acute myocardial infarction. Methods 120 patients with acute myocardial infarction according to electrecardingraphic J wave of the existence were randomly divided into the observation group and the control group, conventional 12-lead electrocardiogram were used for diagnosis,holter recorder and second lead instrument to 24 h bolter monitoring then were used for diagnosis also. Results In epidemiology, no significant difference in gender,age,diastolic blood pressure in two groups( P ＞0.05) ,but the incidence of multi-veesel disease and systolic blood pressure had significant difference in two groups( P ＜0.05 ). The incidence of arrhythmia in two grpups had no significant difference ( P ＞ O. 05 ), but some indlividual projects had signifieant difference(P ＜0.05 ). J wave was frustrated type, high amplitude, duration, the elderly prompted an increased risk of cardiac events. At the same time,with the J wave were high amplitude and long duration,risk of acute myocardial infarction were larger. Conclusion Myocardial infarction n and J wave syndrome may occur in acute myocardial infarction,and ECG can be used for early diagnosis of the J wave syndrome in high-risk groups to prevention of sudden cardiac death.
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