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Diagnosis of origin of ventricular tachycardia by 12-lead electrocardiogram: Evaluation of ECG of clinical VT cases Satoshi Ushijima 1 , Eiichiro Kamata 1 , Hiroshi Saito 1 , Takeshi Mitsui 1 , Hiroaki Kobayashi 1 , Takashi Iwa 1 1Department of Surgery, University of Kanazawa School of Medicine pp.619-625
Published Date 1984/6/15
DOI https://doi.org/10.11477/mf.1404204466
  • Abstract
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12-lead electrocardiogram (ECG) of 19 non-ischemic ventricular tachycardias (VT) in 17 pa-tients (9 cases of VT operated, 8 cases of VT non-operated) was evaluated in order to determine the more exact site of the origin of VT. In all cases, precise site of VT origin was decided by means of endocardial catheter mapping or intraoperative epicardial and endocardial mapping. Ten VT pat-terns had a left bundle branch block (VT-LBBB) morphology and nine a right bundle branch block (VT-RBBB) morphology. All VT-LBBB arose in the right ventricle and all VT-RBBB in the left ventricle. In these cases, general QRS pattern, maximal QRS vector and vector direction of initial QRS wave (60 msec) were correlated with their site of origin.

We conclude that 12-lead ECG, especially vector direction of the initial QRS wave was useful in locat-ing the origin of VT.


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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