Document Detail

Manifest and concealed AV nodal reentry in Wenckebach type of AV conduction with AV junctional escape rhythm.
MedLine Citation:
PMID:  8913908     Owner:  NLM     Status:  MEDLINE    
An electrocardiogram was obtained that was characterized by sinus rhythm with progressive prolongation of the PR interval not followed by a blocked sinus impulse. After a critically long PR interval, the QRS complex was followed by a premature P' wave, representing an echo beat, a manifest reentry in the atrioventricular (AV) node. The pause, occasioned by the premature P' wave, was at times interrupted by an AV junctional escape beat, occurring with an escape interval of 1.21-1.24 seconds. On other occasions, however, the escape beat did not manifest on schedule, even though the pause was markedly longer than the escape cycle. This suggested that the manifest reentry was followed by a further concealed reentry, resulting in inapparent discharge of the AV junctional escape pacemaker, whose firing was postponed, thereby allowing the sinus impulse to capture the ventricles.
G Oreto; A Consolo; I M Scimone
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Publication Detail:
Type:  Case Reports; Journal Article; Review    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  29     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1996 Oct 
Date Detail:
Created Date:  1997-02-13     Completed Date:  1997-02-13     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  333-6     Citation Subset:  IM    
Cardiology Department, University of Messina, Italy.
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MeSH Terms
Electrocardiography / statistics & numerical data
Heart Conduction System / physiopathology*
Tachycardia, Atrioventricular Nodal Reentry / diagnosis*,  physiopathology
Tachycardia, Ectopic Junctional / diagnosis*,  physiopathology
Time Factors

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