摘要
目的 探讨动态心电图 (DCG)对冠状动脉粥样硬化性心脏病 (简称冠心病 )患者无症状心肌缺血发作的识别价值及规律。 方法 按年龄将患者分为老年组 2 1例 ,非老年组 30例。应用DCG对冠心病 5 1例的心肌缺血进行动态分析。 结果 5 1例经DCG检测共发生缺血性ST段下移 36 8次 ,其中无症状缺血发作占 85 87% ,ST段压低值平均为 ( 1 6 6± 0 13)mm ,78%缺血性ST段下降时心率增快 ,夜间心肌缺血阈值低 ,缺血时间和ST段压低程度劣于日间。老年组混合型心肌缺血及心肌缺血阈变异度 (IV)较对照组有显著差异。 结论 DCG对无症状心肌缺血检测有重要意义 。
Objective To evaluate significance of myocardial ischemic threshold of silent myocardial ischemia in coronary artery disease. Methods 51 patients with coronary artery disease were investigated by 24 hour ambulatory electrocardiogram. Results The silent myocardial ischemia was 85.87% with S-T depression (average 1.66±0.13 mm), and 78% patients had fast heart ratio with ST depression, in which total 368 ischemic episodes and nocturnal ischemjas had lower threshold and longer mean ischemic time as well as deeper ST depression in the 51 patients. The variability of ischemic threshold of the mixed type and elderly group were higher than those of two control group. Conclusions It is important to measure silent myooardial ischemia by dynamic electrocardiogram.
出处
《总装备部医学学报》
2004年第2期75-76,共2页
Medical Journal of General Equipment Headquarters
关键词
心肌缺血
变异度
动态心电图
Myocardial ischemia Variability Dynamic electrocardiogram
