摘要
目的探讨正常人心电图Tp-Te间期和Tp-Te/QT比率与心率(heartrate,HR)的相关性及其临床意义。方法随机抽取200例正常人心电图,分别测量其V6导联的Q-T间期、Q-Tp间期(自QRS波群起点至正相T波最高点),计算Tp-Te间期,即T波顶点至T波终点的时间(QT间期-QTp间期)及Tp-Te/QT比率,并分别计算Tp-Te间期和Tp-Te/QT比率与心率之间的相关性。结果正常人V6导联Tp-Te间期为83.17±12.64ms,Tp-Te/QT比率为0.21±0.03,波动范围在0.15～0.27之间;正常人Tp-Te间期在56～114ms之间与心率呈反相关(Pearson相关系数r为-0.239,P=0.007<0.01),Tp-Te/QT比率与心率无相关性(Pearson相关系数r为0.55,P=0.54)。结论正常人心电图V6导联Tp-Te间期与心率呈负相关而Tp-Te/QT比率不受心率的影响。
Objective To compare the relativity between Tp - Te interval,Tp - Te / QT ratio with heart rate （HR） and explore their clinical significance retrospectively. Methods 200 normal individuals＇ ECG were randomly selected and the Tp - Te interval and Tp - Te/QT ratio were measured in precordial lead V6 retrospectively. The relativity between Tp - Te interval and Heart Rate, Tp - Te/ QT ratio and Heart Rate were calculated retrospectively. Results The Tp -Te interval was about （83.17 ± 12.64）ms in precordial lead V6 of normal individuals. The Tp - Te interval decreased linearly with the increase in HR with the range of Tp - Te interval being 56 to 114 milliseconds （ Pearson＇ s correlation coefficient r was - 0. 239, P = 0. 007 〈 0. 01 ）. There was no relativity between Tp - Te/QT ratio and HR（ Pearson＇ s correlation coefficient r was 0. 55,P = 0.54 〉 0.01 ）. Conclusion There is an inverse correlation between Tp - Te interva and HR while no correlation between Tp -Te/QT ratio and HR.
出处
《医学研究杂志》
2009年第9期30-32,共3页
Journal of Medical Research
基金
山西省卫生厅科技攻关计划项目(200742)
