摘要
目的分析心肌缺血心电图QRS波群特征与ST段偏移量的关联性。方法提取心电信号的心拍模板,筛选各个心电心拍,计算QRS波群特征(QRS上升斜率、QRS下降斜率、角R、角Q)和ST段偏移量,最后分析各QRS波群特征随ST段偏移量的拟合趋势以及对应关系。结果经公共数据库Long Term STdatabase(LTST)统计分析得到:随着ST段偏移量的改变,QRS上升斜率与下降斜率绝对值呈现一致的变化趋势,与角R变化趋势相反,与角Q的关联性不明显。经欧洲ST数据库的验证,QRS波群特征与ST段呈现很好的对应关系。结论在基于心电图ST段的心肌缺血检测中,结合QRS波群特征进行辅助检测具有重要意义。
Objective To analyze the relationship between ST-segment deviation and QRS complex characteristics in myocardial ischemia（MI） detection basing on electrocardiogram（ECG）.Methods The templates of heart beats were extracted,and the appropriate heart beats were selected.Then ST-segment deviation and various QRS complex characteristics were calculated,containing QRS upward and downward slopes,angle R and Q in triangle QRS.Finally,the fitting trends and corresponding relationship between QRS complex characteri-stics and ST-segment deviation were analyzed.Results After the Long Term ST database（LTST） verification,it was found that QRS upward slope,with the trend opposite to angle R,had the consistent trend with downward slope.The relationship between angle Q and other QRS complex characteristcs was not marked.In addition,a good corresponding relationship between QRS complex characteristics and ST-segment deviation was found after the European ST database verification.Conclusion Myocardial ischemia detection on the basis of ST-segment combined with the assisted QRS-complex characteristics is of great significance.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2011年第3期191-196,共6页
Space Medicine & Medical Engineering
基金
中国航天医学工程预研项目(SJ201006)
