急性心肌缺血对心脏电稳定性的影响  

Influence of acute myocardial ischemia on myocardial electrophysiological stability

作　　者：李晶洁[1] 郭晖[1] 郭晓宁[1] 于艳伟[1] 曲秀芬[1] 

机构地区：[1]哈尔滨医科大学第一临床医学院心内科,150001

出　　处：《中国急救医学》2007年第6期517-518,共2页Chinese Journal of Critical Care Medicine

摘　　要：目的应用长程晚电位及长程QT间期变异技术分别从心室除极、复极的角度探讨冠状动脉急性缺血对心电稳定性的影响。方法选择我院住院的心绞痛频繁发作的冠心病患者47例,佩戴数字化Holter记录仪,选取心绞痛发作时及症状缓解6h后的长程晚电位及QT间期变异各项参数指标,每一指标选取临近时间段的三个数值,取其均数用做统计数据。结果在心绞痛发作时及症状恢复后,晚电位及QT间期变异各项参数均显示明显变化,差异有统计学意义(P<0.05)。结论冠状动脉血流情况与心电稳定性指标显著相关,短暂心肌缺血时心室除极、复极指标也有显著变化,其敏感性高于普通心电图,可以成为评价无创冠状动脉缺血事件的有益补充。Objective To study the eleetrophysiologieal correlation of ventricular depolarization （ detected by signalaveraged ECG, VLP） and repolarization （ detected by QT interval variability, QTV） with transient myocardial ischemia. Methods Digital Hoher ECG was recorded in 47 patients with angina peetoris. To analyse the parameters of VLP and QTV during transient myocardial isehemia and 6 hours after angina by the Hoher recorder. We chose three random continuous times, the parameter of VLP and QTV was determined in triplicate and averaged. Results The parameters of VLP and QTV showed significant difference during transient myocardial isehemia and 6 hours after angina. Conclusions Myocardial eleetrophysiologieal stability correlated with coronary blood flow. There was significant diversity of ventrie- ular depolarization and repolarization in the period of transient myocardial isehemia, which provide a new valuable noninvasive diagnostic method for clinic.

关 键 词：冠心病 长程晚电位 QT间期变异 心电稳定性 

分 类 号：R541.4[医药卫生—心血管疾病]