Document Detail

Fascicular block within the His bundle.
MedLine Citation:
PMID:  679756     Owner:  NLM     Status:  MEDLINE    
The findings in a patient with complete atrioventricular block and normal morphology and duration of the QRS complex are presented. A His bundle electrogram was obtained, which led to the location of the atrioventricular block within the His bundle. A careful review of the electrocardiograms obtained during the seven years preceding the onset of complete atrioventricular block showed a QRS complex with the features of left anterior hemiblock and a progressive impairment of atrioventricular conduction. From these data, we inferred that the different degrees of atrioventricular block and the left anterior hemiblock were caused by lesions within the His bundle involving the fibers destined for the left anterior division of the left branch. After the onset of complete atrioventricular block, with the subsidiary pacemaker located in the His bundle distal to the lesions, the QRS complex became normal, indicating the integrity of the bundle branches and fasciculi. The atrial and proximal His potential intervals and those between distal His and ventricular potentials were normal.
J A Sobrino; J F Sotillo; A del Rio; N Sobrino; I Maté
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Chest     Volume:  74     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  1978 Aug 
Date Detail:
Created Date:  1978-10-25     Completed Date:  1978-10-25     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  215-8     Citation Subset:  AIM; IM    
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MeSH Terms
Bundle of His*
Heart Block / diagnosis*,  etiology,  physiopathology
Heart Conduction System*
Middle Aged

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

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