Abstract：Objective To investigate the performance of vectorcardiogram(VCG) and electrocardiogram（ECG） on left septal fascicular block(LSFB).MethodsA total of 34 cases of VCG with LSFB in ECG examination were compared and analyzed.Results There were 34 cases of LSFB that meet the VCG diagram Nakaya standard: In 8 cases, the maximum QRS loop vectors were from 45°-67° in the cross section(H) , and the forwardvector occupied (64.62±6.37)% of the total area; in 26 cases, the maximum QRS loop vectors were from 30°-44° in the cross section(H), and the forwardvector occupied (71.32±8.18)% of the total area. In 12 cases, the cross sections(H) were oriented in the rightfront side(35.29%) with time of (11.88±1.14) ms; in 22 cases, the cross section(H) were oriented in the leftfront side (64.71%);all the QRS ring were operated in counterclockwise. Among the 34 cases of ECG, 15 cases showed R/S>1 on V1-V3 lead(44.12%); 15 cases showed R/S>1 on V1 lead(44.12%); 31 cases showed R/S>1 on V2 lead(91.18%); 33 cases showed R/S>1 on lead V3(97.06%); 31 cases showed RV2> RV6>1(91.18%); 33 cases showed no Q wave on lead Ⅰ(97.06%),27 cases showed no Q waves on lead V5 and V6(79.41%).Conclusion The diagnosis of LSFB in VCG diagram is simple and easy. It shows better advantages in electrophysiological examination while combined VCG with ECG.
戴静，龙佑玲，潘二明，卢僖，黄雯，李娟. 心电向量图结合心电图诊断左间隔支阻滞34例分析[J]. 实用心电学杂志, 2020, 29(2): 104-107.
Dai Jing1,Long Youling1,Pan Erming2,Lu Xi1,Huang Wen1,Li Juan1. Diagnosis on 34 cases of left septal fascicular block by the combination of vectorcardiogram and electrocardiogram performance. JOURNAL OF PRACTICAL ELECTROCARDIOLOGY, 2020, 29(2): 104-107.
