无症状性与有症状心肌缺血的临床特征比较

对50例确诊为冠心病的病人进行了24小时动态心电监测。结果表明,无症状性心肌缺血次数明显多于有症状性心肌缺血次数(P<0.01);无症状性心肌缺血的病人明显多于有症状性心肌缺血的病人(P<0.01);有症状与无症状性缺血时的平均心率均明显快于缺血前的平均心率(P<0.01);6～12时及18～24时期间心肌缺血次数明显多于0～6时期间心肌缺血次数(P<0.05);有症状性与无症状性心肌缺血之间在平均缺血持续时间ST段下降幅度、缺血前及缺血时平均心率等方面无明显差异。

Comparison of Clinical Charicteristics of Asymptomatic and Symptomatic Myocardial Ischemia

Myocardial ischemia was detected by continuous electrocardiographic monitoring in patients 50 with coronary heart disease. The results showed that the episode of asymptomatic myocardial ischemia occurred more frequently than that of symptomatic myocardial ischemia (P< 0.01); The number of patients with only asymptomatic myocardial ischemia was significantly more than that of patients with only symptomatic myocardial ischemia (P<0.01); The heart rates at both asymptomatic and symptomatic myocardial ischemia were quicker than that prior to episode of fschemia (P<0.01); The episodes of ischemia between 6 and 12, 18 and 24 hours are much more than that between 0 and 6 hours (P<0.05); there were no significant differences between asymptomatic and symptomatic episodes with respect to their mean duration, ST segment depression, and heart rates before.and at episodes.