摘要
[目的]探讨无症状性心肌缺血（silence myocardial ischemia,SMI）的临床特点和发生规律以及24 h动态心电图在诊断SMI中的临床应用。[方法]对82例冠心病（coronary heart disease,CHD）患者应用24 h动态心电图监测,根据监测结果结合患者临床表现进行分析。[结果]有缺血性ST段改变69例（84.15%）,有症状者25例（36.23%）,无症状者44例（63.77%）;共检出心肌缺血792阵次,无症状者641阵次（80.93%）,有症状者151阵次（19.07%）;ST段降幅为0.1-0.3 mV,心肌缺血发作时心率较发作前快;发作高峰在上午6：00-12：00,而0：00-6：00最少;无症状心肌缺血持续时间为22 min/次,有症状心肌缺血持续时间为8 min/次,差异有显著性意义（P〈0.05）。[结论]无症状心肌缺血是冠心病最常见的表现形式,24 h动态心电图对检测无症状心肌缺血有重要意义。
[Objective] To explore the clinical characteristic and occurrence rule of silent myocardial ischemia（SMI） and the clinical significance of SMI on 24 hour dynamic electrocardiogram（DCG）.[Methods] Twenty-four hour DCG monitoring was performed in 82 cases of coronary heart disease（CHD） and was discussed according to the results with clinical features.[Results] There were 69 cases（84.15%） with altering of ST segment with ischemia,25 cases（36.23%） with symptoms and 44 cases（63.77%） with non-symptoms.Seven hundred and ninety-two times of myocardial ischemia were found,in which 641 were found with SMI,and 151 were found with symptoms.ST segment was down from 0.1 mV to 0.3 mV.The heart rate was faster in happening of myocardial ischemia than that before it.The frequency of SMI was highest between 6 am and 12 pm,and it was lowest between 0 am and 6 am.It consisted 22 minutes per time in SMI and 8 minutes per time in myocardial ischemia with symptom（P〈0.05）.[Conclusion] SMI is the most common manifestation in patients with CHD,and 24 hour DCG has the significant importance for monitoring SMI.
出处
《大连医科大学学报》
CAS
2011年第4期370-372,共3页
Journal of Dalian Medical University
关键词
动态心电图
冠心病
无症状性心肌缺血
dynamic electrocardiogram； coronary heart disease； silence myocardial ischemia；
