郑州大学学报（医学版）2026，Vol.61Issue(2)：19-22,4.DOI:10.13705/j.issn.1671-6825.2025.04.167
QSaVR/aVL对胸前V3导联移行流出道室性心律失常起源部位的鉴别价值
Value of QSaVR/aVL in identifying origin of outflow tract ventricular ar-rhythmia with precordial R/S transition at lead V3
摘要
Abstract
Aim:To explore the value of lead aVR and aVL QS wave amplitude ratio(QSaVR/aVL)in identifying ori-gin of outflow tract ventricular arrhythmia(OT-VA)with precordial R/S transition at lead V3.Methods:This study enrolled 102 OT-VA patients with precordial R/S transition at lead V3 who underwent successful radiofrequency catheter ablation in the First Affiliated Hospital of Zhengzhou University between January 2018 and February 2025.The origin sites of 86 pa-tients were RVOT(RVOT group)and those of 16 patients were LVOT(LVOT group).The lead aVR and aVL QS wave am-plitude(QSaVR and QSaVL)in t23he surface electrocardiogram were measured during OT-VA,and QSaVR/aVL was calcu-lated.ROC curves were plotted to assess the diagnostic performance of QSaVR,QSaVL,and QSaVR/aVL in identifying origin of outflow tract ventricular arrhythmias.Results:There was no significant difference in QSaVR between the 2 groups(P=0.303),QSaVL was significantly lower in RVOT group than that in LVOT group,and QSaVR/aVL was significantly higher in RVOT group than that in LVOT group(P<0.05).QSaVR/aVL had the largest AUC for identifying RVOT origin and the AUC(95％CI)was 0.929(0.875-0.983).When QSaVR/aVL>1.0 was applied to identify RVOT origin,the sensitivity,specificity and accuracy were 0.919,0.813 and 0.902,respectively.Conclusion:QSaVR/aVL>1.0 could be applied to i-dentify RVOT originating OT-VA with precordial R/S transition at lead V3 accurately.关键词
QSaVR/aVL/流出道室性心律失常/胸前移行导联Key words
QSaVR/aVL ratio/outflow tract ventricular arrhythmia/precordial transition lead分类
医药卫生引用本文复制引用
秦奋,赵雨薇,朱揆,赵江涛,孙钊威,刘政昂,程彤辉,张国栋,陶海龙..QSaVR/aVL对胸前V3导联移行流出道室性心律失常起源部位的鉴别价值[J].郑州大学学报（医学版）,2026,61(2):19-22,4.基金项目
国家重点研发计划子项目(2022YFC2405004) （2022YFC2405004）
国家科技重大专项子项目(2023ZD0504204) （2023ZD0504204）
河南省科技攻关项目(252102311129) （252102311129）
北京心联智成心血管健康公益基金会"2021-2023年度心脏电生理科研基金"项目(2022-Z-02-0008) （2022-Z-02-0008）
