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目的观察动态心电图检测冠心病无症状心肌缺血(SMI)的临床意义。方法对已经确诊的50例冠心病患者进行动态心电图监测,观察无症状心肌缺血发生频率和发病时的心率变化等。结果 50例冠心病患者检测出缺血性ST段改变者48例,占总数的96.0%,无症状者38例,占76.0%,有症状者10例,占20.0%。ST段压低幅度为0.1~0.4 m V,共计195阵次,心率较快者占74.9%,显著高于心率较慢者的25.1%;并且无症状心肌缺血发生146阵,占74.9%,有症状心肌缺血发生49阵,占25.1%,前者发作次数显著高于后者。结论动态心电图对检测无症状心肌缺血具有十分重要的临床意义。
Objective To observe the clinical significance of ambulatory electrocardiogram (ECG) in detecting myocardial ischemia (SMI) of coronary heart disease. Methods Fifty cases of coronary heart disease were diagnosed by dynamic electrocardiogram monitoring, observed the incidence of asymptomatic myocardial ischemia and heart rate changes at the onset. Results 48 cases of ischemic ST segment changes were detected in 50 patients with coronary heart disease, accounting for 96.0% of the total. 38 cases were asymptomatic, accounting for 76.0%, and 10 cases were symptomatic, accounting for 20.0%. ST segment depression range of 0.1 ~ 0.4 mV, a total of 195 array, faster heart rate accounted for 74.9%, significantly higher than the heart rate was 25.1%; and asymptomatic myocardial ischemia occurred 146 array, accounting for 74.9%, there Symptoms Myocardial ischemia 49 array, accounting for 25.1%, the former was significantly higher than the latter attack. Conclusion Holter monitoring of asymptomatic myocardial ischemia has very important clinical significance.