摘要
对32例信息叠加心电图异常的陈旧性心肌梗塞伴心绞痛病人作体外反搏治疗,结果显示治疗后信息叠加心电图时域参数QRS末振幅低于40μV的时间(LAS),QRS末40ms的平方根电压(RMS)明显升高(P<0.05),治疗前后频域分析结果无显著变化(P>0.05).提示体外反搏对陈旧性心肌梗塞有治疗效果.治疗后信息叠加心电图时域指标LAS,RMS的改变与心肌梗塞病人恶性心律失常发生率有待于进一步研究.
Thirty-two patients with remote myocardial infarction and abnormal signal-averaged electrocardiograms (SAECG) were treated with improved external counterpulsation. The result showed the time domain parameters of SAECG as follows: The low amplitude signal duration was below 40μV of the terminal QRS, the root mean square voltage of the terminal 40ms QRS was significantly different(P<0.05) after treatment, the SAECG frequency domain parameters did not show any difference after care. The mechanism was due to the fact that the increased blood flow accelerated the opening of the coronary collaterals in the ischemicoareas, improved the myocardial blood supply and changed the pathophysiologic basis induced later potentials. The relation between the changes of SAECG time domain parameters alteration and malignant arrhythmia attack rate of myocardial infarction needs further study.
出处
《青岛医学院学报》
1992年第4期266-269,共4页
Acta Academiae Medicinae Qingdao Universitatis
关键词
心电图
心肌梗塞
体外反搏
signal-averaged electrocardiogram
ventricular late potentials
myocardial infarction
external counterpulsation
