Comparative analysis on ECGs of premature ventricular contractions originating separately from aortic sinus cusp and the septum of right ventricular outflow tract
摘要 目的 探讨主动脉窦部室性早搏（简称“室早”）和右心室流出道间隔部室早心电图特征的差别。方法 选取12例右心室流出道间隔部室早（A组）心电图作为对照,分析12例主动脉窦部室早（B组）的心电图特征。结果 与A组相比，B组V1、V2导联的R波时间指数增大\[V1导联：(0.23±0.10) vs. (0.49±0.28)；V2导联：(0.24±0.12) vs.(0.57±0.23)；P均<0.05\]。V1、V2导联的R/S波幅指数A组小于B组\[V1导联：(0.10±0.02) vs. (0.87±0.55)；V2导联: (0.21±0.14) vs. (1.13±1.49)，P均<0.05\]。A组胸前导联R波移行在V3导联或其后，B组胸前导联R波移行在V1或V2导联。A组V1、V2导联的R波移行指数小于B组\[V1导联：(0.25±0.15) vs. (1.30±0.68)； V2导联：(0.31±0.20) vs.(1.71±1.14)，P均<0.05\]。结论 主动脉窦部室早与右心室流出道间隔部室早在V1、V2导联R波时间指数、R/S波幅指数、胸前导联R波移行位置及移行指数上有明显的差别。
Abstract：Objective To investigate the difference in ECG characteristics of premature ventricular contraction(PVC) originating separately from aortic sinus cusp(ASC) and the septum of right ventricular outflow tract(RVOT). Methods The ECG characteristics of 12 ASC-originated PVC patients(group B) were analyzed and compared with those of another 12 patients with PVC originating from the septum of RVOT(group A).Results The indexes of R-wave duration in lead V1,V2 were significantly lower in group A than those in group B ［V1 lead: (0.23±0.10) vs.(0.49±0.28);V2 lead: (0.24±0.12) vs.(0.57±0.23), P<0.05, respectively］. The indexes of R/S wave amplitude in lead V1,V2 were significantly lower in group A than those in group B［V1 lead: (0.10±0.02) vs.(0.87±0.55); V2 lead: (0.21±0.14) vs. (1.13±1.49), P<0.05, respectively］. The R-wave precordial transitional position was located in it or after it in group A while in lead V1 or V2 in group B. The transitional indexes of lead V1 and V2 were significantly lower in group A than those in group B ［V1 lead: (0.25±0.15) vs.( 1.30±0.68); V2 lead: (0.31±0.20) vs. (1.71±1.14), P<0.05, respectively］.Conclusion Between ASC-originated PVC and PVC originating from the septum of RVOT, there are significant differences in the indexes of R-wave duration, R/S wave amplitude, and R-wave precordial transitional position and the transitional indexes in lead V1, V2.
刘玉平, 赵文婷, 陈庆兴, 邹操, 杨宝诚, 李勋, 杨向军, 朱文青. 主动脉窦部室性早搏与右心室流出道间隔部室性早搏心电图对比分析[J]. 实用心电学杂志, 2014, 23(6): 411-414.
LIU Yu-Ping, ZHAO Wen-Ting, CHEN Qing-Xing, ZOU Cao, YANG Bao-Cheng, LI Xun, YANG Xiang-Jun, ZHU Wen-Qing. Comparative analysis on ECGs of premature ventricular contractions originating separately from aortic sinus cusp and the septum of right ventricular outflow tract. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2014, 23(6): 411-414.
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2014, Vol. 23 
