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Double Ventricular Parasystole Associated with High Grade Atrioventricular Block Takakazu Katoh 1 , Yoshihiko Sasaki 2 , Yoshinori Tsujimura 3 1Katoh Cardiovascular Clinic 2Central Medical Laboratory, Ohtsu Municipal Hospital 3Division of Cardiology, Cardiovascular Center, Ohtsu Municipal Hospital Keyword: 二源性心室性副収縮 , 高度房室ブロック , double ventricular parasystole , high degree atrioventricular block pp.403-406
Published Date 1997/4/15
DOI https://doi.org/10.11477/mf.1404900035
  • Abstract
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Double ventricular parasystole was documented in a case of a 67-year-old Japanese male with high grade atrioventricular block. His previous 12 lead ECG showed sinus rhythm and right bundle branch block with left axis deviation, suggesting left anterior fas-cicular block. The occasional capture beats showed the same QRS complexes under the high grade atrioventricular block. Two independent regular automaticities with their mutual protection block were supposed to be in the anterior and posterior fascicles of the left bundle branch, each showing right bundle branch block with posterior and anterior fascicular block. Their rates were 34 and 35 per minute. The similarity of the two parasystolic rates often permitted the continuous predominance of one of the two parasys-tole for ten or more seconds or even several minutes. These four QRS complexes were mixed, revealing very complex arrhythmias. Double ventricular parasystole associated with high grade atrioventricular block is the second case report to our knowledge.


Copyright © 1997, 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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