模拟V_5导联负极位置对心电图波形的影响  

Effect of position of simulant lead V5 negative pole to waveform of ECG

作　　者：蒋晓岚[1] 杨镒敏[1] 蒋建光[1] 刘敏[1] 

机构地区：[1]江苏省常州市第二人民医院心功能室,213003

出　　处：《心电学杂志》1999年第4期210-211,219,共3页Journal of Electrocardiology(China)

摘　　要：为检验模拟V_5导联与V_5导联心电波形差异,增进对双极胸导联的认识,观察将模拟V_5导联的负极放置3个不同位置时的波形与V_5导联的异同.200例正常人结果显示,3个模拟V_5导联QRS形态不同于V_5导联(P均<0.01);R波振幅普遍高于V_5;负极置于胸骨柄和左锁骨ST-T异常发生率占23%和28.5%;而置于右锁骨ST-T异常率为2.5%,较前两者非常显著减少(P<0.01);认为模拟V_5导联负极位置对心电图波群形态有重要影响,建议模拟V_5导联负极应放置在右锁骨下.In order to check difference of electrocardiogram waveform between simulant lead V5 and V5, and to enhance understanding of bipolar chest lead, 200 normal persons were selected and position of simulant lead V5 negative pole wa,s changed on them, 'Ihree types of simulant lead V5 went recorded and complex of them were compared with lead V5 Results showed that QRS waveform of three types in simulant lead V5 was different from that of lead V5(P<0.01) and amplitudes of R wave in simulant lead V5 are all higher than that in lead V5 .If negative pole was put on low position of prestemum and left collarbone, abnormal rate of ST - T is 23% and 28.5% respectively. If negative pole was put on position of low right collarbone, abnormal rate of ST - T was 2.5% . Compared with previous two methods,it was obviously decreased (P < 0.01). It was thought that change of position of simulant lead V5 negative pole played an important part in waveform of ECG. In order to avoid to judge false position of myocardial ischemia, we suggested simulant lead V5 negative pole should be put on be low righl collarbone.

关 键 词：模拟V5导联 心电图 动态心电图 

分 类 号：R540.41[医药卫生—心血管疾病]