| Magnetocardiographic studies of ventricular repolarization in old inferior myocardial infarction. | |
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MedLine Citation:
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PMID: 2702969 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Isomagnetic maps of 50 normal subjects (control group) and 23 patients with old inferior myocardial infarction (IMI group) were recorded in order to analyse T wave abnormalities in inferior myocardial infarction. The T wave of the magnetocardiogram (MCG) in the control group showed negative deflections in the left upper portion and positive deflections in the right lower portion, thus resulting in a T vector directed leftward and inferiorly. The T wave of the IMI group was flat or positive in the left upper portion and flat or negative in the right lower portion, suggesting a T vector directed superiorly. In addition, opposing dipoles were observed in 36.4% of the IMI group; i.e. one directed superiorly, presumably due to inferior myocardial ischaemia, and the other directed inferiorly due to normal repolarization. Localized T vector abnormalities could be detected by the MCG in some cases, in which coronary T waves of the standard electrocardiogram had returned to normal. Furthermore, multiple dipoles were more frequently observed in the isomagnetic map than in the isopotential map (5 vs. 15; P less than 0.01). These results suggest that the MCG is helpful in diagnosing myocardial ischaemia when this is not detectable on the electrocardiogram. |
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Authors:
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M Nomura; Y Nakaya; K Fujino; S Ishihara; M Katayama; A Takeuchi; K Watanabe; Y Hiasa; T Aihara; H Mori |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: European heart journal Volume: 10 ISSN: 0195-668X ISO Abbreviation: Eur. Heart J. Publication Date: 1989 Jan |
Date Detail:
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Created Date: 1989-05-16 Completed Date: 1989-05-16 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8006263 Medline TA: Eur Heart J Country: ENGLAND |
Other Details:
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Languages: eng Pagination: 8-15 Citation Subset: IM |
Affiliation:
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Second Department of Internal Medicine, School of Medicine, University of Tokushima, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Arrhythmias, Cardiac / diagnosis, etiology Electrocardiography / methods* Female Heart Ventricles / physiopathology Humans Magnetics* Middle Aged Myocardial Infarction / complications, diagnosis*, physiopathology |
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