实用心电学杂志2016，Vol.25Issue(3)：196-200,5.DOI:10.13308/j.issn.2095-9354.2016.03.009
流出道起源室性早搏心电图特征及其对射频消融靶点的判断价值
ECG characteristics of outflow tract originated premature ventricular contraction and their location value for radiofrequency ablation target
孙卫红 1李文华1
作者信息
- 1. 213017 江苏 常州，常州市武进人民医院心电图室
- 折叠
摘要
Abstract
Objective To explore the ECG characteristics of premature ventricular contraction (PVC)and their location value for outflow tract originated PVC.Methods Retrospective analysis was performed on the figures of 68 successfully ablated cases with right ventricular outflow tract (RVOT)PVC or left ventricular outflow tract (LVOT)PVC.We measured R/S value of precordial leads,switch site of R/S,QRS complex duration of V2 lead,amplitude and duration indices of R wave in V2 lead,and then discussed the relationship between each of the above index and radiofre-quency ablation target.Results There was no significant difference in general circumstances be-tween 54 RVOT-PVC and 1 4 LVOT-PVC patients.The duration of RVOT-PVC was shorter than that of LVOT-PVC(P <0.05 ).There were 1 2 cases with R/S switch in V1 V2 lead,including 1 1 LVOT-PVC ones with a specificity of 91 .67% and a sensibility of 78.57%;there were 24 cases with R/S switch in V3 lead,including 21 RVOT-PVC ones with a specificity of 87.50% and a sen-sibility of 38.89%;there were 32 RVOT-PVC cases with R/S switch in V4 V6 lead with a specific-ity of 1 00% and a sensibility of 59.26%.The location value of amplitude and duration indices of R wave in V2 lead for RVOT-PVC was low than that for LVOT-PVC(P <0.05).Conclusion R/S switch has greater diagnostic value for LVOT-PVC in or before V2 lead and for RVOT-PVC in or before V4 lead.When R/S switches in V2 V3 lead,the three indices of QRS complex duration,R wave du-ration index and R wave amplitude index of V2 lead play important roles in identifying the origin sites of PVC.关键词
室性早搏/流出道/靶点/振幅指数/时限指数Key words
premature ventricular contraction/outflow tract/target/amplitude index/duration index分类
医药卫生引用本文复制引用
孙卫红,李文华..流出道起源室性早搏心电图特征及其对射频消融靶点的判断价值[J].实用心电学杂志,2016,25(3):196-200,5.
