Document Detail


First-degree trifascicular block unmasked by sinus arrhythmias. Report of a case studied with intracardiac electrocardiography.
MedLine Citation:
PMID:  302075     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A case is presented in which first-degree block in all three fascicles of the intraventricular conduction system results in a QRS complex with no specific features of fascicular block. During spontaneous sinus arrhythmia the typical features of RBBB and LAH appear at the longest sinus cycles. This is associated with shortened P-R and H-Q intervals. During shorter sinus cycles, near equalization of delay in each fascicle is associated with delay in His-Purkinje conduction but loss of the typical features of bifascicular block as the ventricular myocardium becomes activated more synchronously. Documentation of the changing patterns of ventricular activation is provided by His bundle electrocardiography.
Authors:
P h Gelber; M Dolgin; A J Kaltman
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Acta cardiologica     Volume:  32     ISSN:  0001-5385     ISO Abbreviation:  Acta Cardiol     Publication Date:  1977  
Date Detail:
Created Date:  1977-09-17     Completed Date:  1977-09-17     Revised Date:  2009-06-11    
Medline Journal Info:
Nlm Unique ID:  0370570     Medline TA:  Acta Cardiol     Country:  BELGIUM    
Other Details:
Languages:  eng     Pagination:  141-8     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Arrhythmia, Sinus / etiology*
Bundle-Branch Block / complications,  diagnosis*
Electrocardiography
Humans
Male

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


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