增强型体外反搏治疗陈旧性心肌梗塞对信息叠加心电图时域和频域的影响  

EFFECT OF TREATING REMOTE MYOCARDIAL INFARCTION WITH IMPROVED EXTERNAL COUNTERPULSATION ON TIME AND FREQUENCY DOMAIN OF SIGNAL-AVERAGED ELECTROCARDIOGRAM

作　　者：于左[1] 陈厚侠[2] 朱震[2] 泮媞华 

机构地区：[1]青岛医学院附属医院内科 [2]青岛医学院心血管病研究所 [3]青岛医学院卫生学教研室

出　　处：《青岛医学院学报》1992年第4期266-269,共4页Acta Academiae Medicinae Qingdao Universitatis

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.

关 键 词：心电图 心肌梗塞 体外反搏 

分 类 号：R542.22[医药卫生—心血管疾病]