Document Detail

The junctional premature beat: an instructional exercise in modes of concealment.
MedLine Citation:
PMID:  1245817     Owner:  NLM     Status:  MEDLINE    
?The relative brevity of the main His bundle refractory period compared with that of the A-V node above, and the trifascicular system below, makes it likely that premature beats originating in the His bundle will encounter physiologic delay, or block in both antegrade and retrograde modes. Two clinical cases of junctional premature beats are presented, which demonstrate many facets of concealment (antegrade, retrograde and bidirectional). Hitherto unreported is a ventricular echo which was induced by a junctional premature beat, the antegrade concealment of which was due to functional trifascicular block.
R W Childers
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  9     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1976  
Date Detail:
Created Date:  1976-04-02     Completed Date:  1976-04-02     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  85-8     Citation Subset:  IM    
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MeSH Terms
Action Potentials
Arrhythmias, Cardiac / diagnosis*
Bundle of His / physiopathology*
Bundle-Branch Block / physiopathology
Heart Atria / physiopathology
Heart Block / physiopathology
Heart Conduction System / physiopathology*
Heart Ventricles / physiopathology
Middle Aged
Myocardial Contraction

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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