实用心电学杂志2016，Vol.25Issue(3)：181-187,7.DOI:10.13308/j.issn.2095-9354.2016.03.006
起源于右室流出道间隔部特发性室性早搏心电图及心电向量图研究
Characteristics of electrocardiogram and vectorcardiogram of idiopathic ventricular prema-ture contraction originating from right ventricular outflow tract septum
摘要
Abstract
Objective To investigate the characteristics of electrocardiogram(ECG)and vector-cardiogram(VCG)of idiopathic ventricular premature contraction(IPVC)originating from right ven-tricular outflow tract septum(RVOTS)verified by radiofrequency ablation(RFA).Methods We collected and analyzed the parameters of 1 2 lead ECG and Frank lead VCG among 1 4 RVOTS origi-nated IPVC patients verified by RFA with CARDIO-View ECG workstation.Results In 1 2 lead ECG,RVOTS originated IPVC was shaped like left bundle branch block.There were 1 2 cases (85.7%)with precordial transition ratio≥0,1 4 cases(1 00%)with R-wave duration index <50%in lead V2 ,1 3 cases(92.9%)with R/S-wave amplitude index <30% in lead V2 ,and 1 2 cases (85.7%)with SV2 /RV3 index >1 .5.The characteristics of VCG were as follows.In F plane,QRS loop operated in a clockwise(CW)and counter-clockwise(CCW)direction in 5 cases(35.7%)re-spectively;in H plane,it operated in CCW direction in 1 0 cases(71 .4%);in S plane,its operat-ing direction was CW in all the cases(1 00%);at the first 0.04 s,the amplitude of QRS loop grad-ually increased,and most of it was oriented leftward,anteriorly and inferiorly;In the period of 0.01 0.04 s,leftward vectors gradually increased while anterior ones gradually decreased;the largest vector of QRS loop and the majority of its area was located leftward,inferiorly and backward.Con-clusion ECG is proved to have high accuracy in the location and diagnosis of RVOTS originated IPVC.Typical characteristics of VCG are found in RVOTS originated IPVC.关键词
室性早搏/右室流出道/心电图/心电向量图/射频导管消融Key words
premature ventricular contraction/right ventricular outflow tract/electrocardiogram/vectorcardiogram/radiofrequency catheter ablation分类
医药卫生引用本文复制引用
蒋智善,范咏梅,肖春霞..起源于右室流出道间隔部特发性室性早搏心电图及心电向量图研究[J].实用心电学杂志,2016,25(3):181-187,7.基金项目
湖南省医药卫生科研计划项目（B2014-074）；湖南省科技计划项目重点研发计划 （）
