Document Detail

Wolff-Parkinson-White syndrome with gradual transition from type A to type B.
MedLine Citation:
PMID:  6876389     Owner:  NLM     Status:  MEDLINE    
This report documents a case which showed type A, type B and intermediate patterns of pre-excitation on different days. A vagotonic maneuver and digitalis induced a type A pattern, while exercise, atropine and isoproterenol caused a type B pattern of activity. A gradual transition from type A to B was demonstrated with vectorcardiograms. Despite the variations in the QRS morphology, the direction of the initial vector was not altered and was directed straight anteriorly. In this case, an accessory pathway may be located in the posterior paraseptal region or the lateral free wall of the left ventricle, and a variable size of pre-excited area may have caused type A and type B patterns of pre-excitation.
Y Suzuki; H Terada; N Yamazaki
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Japanese heart journal     Volume:  24     ISSN:  0021-4868     ISO Abbreviation:  Jpn Heart J     Publication Date:  1983 May 
Date Detail:
Created Date:  1983-09-20     Completed Date:  1983-09-20     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0401175     Medline TA:  Jpn Heart J     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  457-62     Citation Subset:  IM    
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MeSH Terms
Delta Rhythm
Heart Conduction System / physiopathology
Middle Aged
Physical Exertion
Wolff-Parkinson-White Syndrome / classification,  physiopathology*

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