陈旧性心肌梗死患者心率震荡与恶性心律失常的关系

The Relationship between Heart Rate Turbulence and Ventricular Arrthmias in Old Myocardial Infarction

目的:通过动态心电图分析陈旧性心肌梗死患者心率震荡参数与恶性心律失常的关系。方法:选取45例陈旧性心肌梗死患者及100例正常对照组进行动态心电图检测,分析其心率震荡参数及室性心律失常情况,并根据室性心律失常的发生与否将心肌梗死组分为A组(室性心动过速组)与B组(无室性心动过速组),比较其心率震荡参数的统计学差异。结果:心肌梗死组患者震荡初始(TO)为-0.46±1.37,震荡斜率(TS)为3.99±3.53;正常对照组TO为-1.93±1.86,TS为8.98±4.84;心肌梗死A组与B组的TO分别为0.32±2.01及-0.91±1.80,TS分别为2.75±3.33及5.32±3.89。心肌梗死组与对照组心肌梗死A组与B组的心率震荡参数均有显著差异。结论:陈旧性心肌梗死患者的心率震荡指数低于正常人,与室性心律失常的发生有关,作为恶性心律失常的预测因子,有一定的临床价值。

Objective：To investigate the parameter changes of heart rate turbulence onset （TO） and turbulenc eslope （TS） in patients with old myocardial infarction were enrolled,and the correlation of TO and TS with ventricular arrthmias was analyzed. Methods：Thirty-nine patients with OMI （OMI group）and 51 healthy controls （control group） were chosen. The 24 h ambulatory electrocardiograph data of subjects were collected and according to the results of ventricular arrthmias in patients with OMI. The OMI group was divided into group A（with ventricular tachycardia） and group B（without ventricular tachycardia）. the value for TO,TS in OMI group, control group, group A and group B were computed respectively. Results：TO and TS in OMI and control groups showed significant difference. There was the same result between group A and group B. （ P〉 0. 01）. Conclusion：TO and TS in patients with OMI were lower to mormal and heart rate turbulence may be as a predictor of ventricular arrthmias.