摘要
目的探讨不同导联参比点对体表正常心电图假性改变形成的影响。方法分别以头胸导联右前额和Wilson导联中心电站为参比点,同步记录100例健康体检者Wilson及其扩展导联(V1～V6、V7～V9、V3R～V8R)和头胸导联(HV1～HV9、HV3R～HV8R)相同测试点的心电图。分别计数与比较相同测试点两种导联出现假性改变(宽或(和)深Q波而无R(r)波,或倒置T波)的心电图例数,并进行χ2检验。结果常规Wilson扩展导联V4R～V8R记录的心电图均为宽或(和)深Q波而无R(r)波,假性改变100例(100%),对应头胸导联HV4R～HV8R记录的心电图均为rs、RS或qRs波,假性改变0例(0/100);常规Wilson扩展导联V3R～V8R均为倒置T波,假性改变100例(100%),部分V1导联出现倒置T波,假性改变25例(25%);对应头胸导联HV1和HV3R～HV8R均为正立T波,假性改变0例(100%)。比较两导联系统记录的正常心电图的假性改变的例数,差异有统计学意义(P<0.05)。结论头胸导联参比点电位低于Wilson导联,头胸导联未出现正常心电图的假性改变。导联参比点电位决定体表正常心电图假性改变的形成。
Objective To explore the effect of reference point potential on the formation of pseudo changes in normal ECG.Methods A total of 100 healthy individuals were enrolled in the study.Two different reference points including central terminal and right forehead were applied to record electrocardiogram simultaneously from 15 testing points of Wilson leads（RL）（V1-V6,V7-V9,V3R-V8R） and the same testing points of head-chest leads（HC）（HV1-HV9,HV3R-HV8R） around the torso,respectively.Chi-square test was used to examine statistical difference between HCECGs and RLECGs accroding to the data of different shapes of Q and T waves.Results Among 100 healthy individuals,in Wilson leads,deformed ECGs appeared in V1 and V3R-V8R leads,with 25%（25/100） inverted T wave in V1 lead,100%（100/100） in V3R-V8R leads,wide or deep Q wave 100%（100/100） in V4R-V8R leads.On the contrary,in HC leads,T waves were all positive,QRS waves were upright as the pattern of rs,RS or qRs.There were significant differences in the cases of T waves and Q waves between Wilson leads and HC leads（P0.05）.Conclusion The study demonstrated that the formation of pseudo changes in ECG among healthy individuals was decided by referene point potential.Therefore,it seems likely that the forehead of HC leads may be better than the central termial as the reference point of the lead system.
出处
《江苏实用心电学杂志》
2012年第3期165-167,共3页
Journal of Practical Electrocardiology JS
基金
国家自然科学基金资助项目(30471647)
关键词
WILSON导联
头胸导联
参比点
假性改变
电位
Wilson lead
head-chest lead
reference point
pseudo change
electric potential
