Document Detail

Right bundle branch block-induced Q waves simulating anterior myocardial infarction extension.
MedLine Citation:
PMID:  11099364     Owner:  NLM     Status:  MEDLINE    
A concept generally accepted in clinical electrocardiography is the assumption that a right bundle branch block (RBBB) does not alter significantly the initial portion of the QRS complex and because the left bundle branch is intact, the septum is activated normally in a left-to-right direction. We report a woman with an acute anterior myocardial infarction (MI) in which a small R wave was present in leads V1 and V4, but with the development of RBBB associated with PR-interval prolongation, these R waves were replaced by Q waves. Subsequently, the electrocardiographic features of anterior MI disappeared concomitantly with the loss of RBBB. The clinical and electrophysiologic implications of these findings are discussed.
J Ortega-Carnicer; M L Gómez-Grande; A Ambrós
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  33     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  2000 Oct 
Date Detail:
Created Date:  2001-03-06     Completed Date:  2001-05-31     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  387-91     Citation Subset:  IM    
Coronary Care Unit, Hospital Alarcos, Ciudad Real, Spain.
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MeSH Terms
Bundle-Branch Block / diagnosis*,  physiopathology
Chest Pain / etiology
Coronary Angiography
Diagnosis, Differential
Myocardial Infarction / diagnosis*,  physiopathology,  radiography
Time Factors

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