Document Detail


The T wave abnormality in the magnetocardiogram.
MedLine Citation:
PMID:  2486759     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The T wave changes in left ventricular hypertrophy and old inferior wall myocardial infarction were studied by the isomagnetic map to compare with those in the isopotential map. The isomagnetic map could detect the instantaneous current source, and the abnormal repolarization vector was more frequently observed in the isomagnetic map than in the isopotential map. The multiple dipoles were more frequently observed in the isomagnetic map, which has been difficult to detect by the isopotential map. The present study showed that repolarization in ventricular hypertrophy and myocardial ischemia is very complex and both normal and abnormal repolarization vectors are present, which might be opposite in direction. In some cases, these vectors were summated and only one dipole could be shown in the electrocardiogram or isopotential map. These results suggest that the magnetocardiogram is useful in detecting opposing current dipoles tangential to the heart.
Authors:
Y Nakaya; M Nomura; K Fujino; S Ishihara; H Mori
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Frontiers of medical and biological engineering : the international journal of the Japan Society of Medical Electronics and Biological Engineering     Volume:  1     ISSN:  0921-3775     ISO Abbreviation:  Front Med Biol Eng     Publication Date:  1989  
Date Detail:
Created Date:  1991-02-26     Completed Date:  1991-02-26     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9011464     Medline TA:  Front Med Biol Eng     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  183-92     Citation Subset:  IM    
Affiliation:
Second Department of Internal Medicine, School of Medicine, University of Tokushima, Japan.
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MeSH Terms
Descriptor/Qualifier:
Adult
Electrocardiography / methods*
Female
Heart Function Tests / methods*
Humans
Hypertension / physiopathology*
Magnetics*
Male
Middle Aged
Myocardial Infarction / physiopathology*
Reference Values

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


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