急性心肌梗死高频心电图与心室晚电位的对比研究

Contrast Study of Acute Myocardial Infarction's High Frequency Electrocardiogram and Ventricle Late Electric Potential

目的比较急性心肌梗死患者治疗前后高频心电图与心室晚电位的变化,以期发现两者之间的关系。方法对48例急性心肌梗死(AM I)病人进行了高频心电图(HFECG)和心室晚电位(VLP)动态检测,将观察者分为四组,其中发病1周以内的患者为Ⅰ组,经治疗后稳定者为Ⅱ组,不稳定者为Ⅲ组,另取正常人为Ⅳ组(对照组)。结果AM I早期(1周内)HFECG的总切迹数(N总)和总扭挫数(S总)明显高于正常对照(P分别<0.01,<0.05)。治疗半月后病情稳定者N总和S总均明显降低(P分别<0.01,<0.05),且与正常无差异(P>0.05);而半月后仍有心绞痛发作或有心功能不全者较早期无明显变化,HFECG阳性病人,其VLP变量TDQRS(QRS持续时间)较阴性者有增高的趋势;V40(QRS终末40 m s均方根电压)有降低的趋势,均无统计学意义。VLP阳性病人较阴性者N总有增高趋势,但差异不显著(P>0.05)。N总与VLP变量指数(InTDQRS+InD40-InV40)直线相关分析显示r=0.32,P>0.1。结论HFECG与VLP两者间无相关关系。

Objective The purpose of this study was to find the relationship between VLP and HFECG. of patients with AM. Methods 48 cases patients with AMI was dynamic monitored by HFECG and VLP. We divded the specimen into four GROUPS. I group was composed of the patients within one week,Ⅱ group was composed of the patients who were stable,Ⅲgroup was the unstable, Ⅳ group was composed of the healthy adults. Results Its showed in AMI＇s early phase （within one week） HFECG ＇stotal notch number（ N total） and totaldistort number（ S total） was significantly higher than the control group（ P 〈 0.01 ,P 〈 0.05 respectively ）. Within half a month＇s treatment both N total and S total of patients whose condition was stable were significantly decreased （P 〈 0.01,P 〈 0.05 respectively） and they had no difference with normal human（ P=NS） ;There was no slgnltlcant difference in prior stage in patients who had anginla pectoris or cardial insufficiency yet after half a month. VLP variation TDQRS（ QRS continual time） was increased in HFECG positive patients compared with negative patients;V40 （ QRS endinlg 40ms rooeansqure voltage）was decreased,but there was no signiticant difference in statistic （P 〉 0.05 ）. N total was increased in VLP positive patients compared with negtive patients. The linear corr elation analysis of N total and VLPV variable index （ ⅠaTDQRS ＋ InD40 - ⅠnV40）showed r= 0.32,P 〉 0.1. Conclusion There was no signifoificant relationship between HFECG and VLP.