Document Detail


Dipolarity and dipole location during QRS and T waves in normal men estimated from body surface potential distribution.
MedLine Citation:
PMID:  4032738     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The dipolarity of the body surface potential distribution and the locus of the main dipole were estimated mathematically at 2 msec intervals in 27 normal men. The nondipolar content showed time-dependent fluctuation during the QRS. It increased sharply at early and later phases of the QRS. The main dipole moved smoothly within the actual cardiac region and was inscribed in a clockwise direction in most cases. The nondipolar content during the ST-T period was smaller and with less fluctuation than that during the QRS. The main dipole during the T wave moved less than 2 cm near the center of the heart. These results indicated that although a fairly large percentage of the body surface potential could be represented by a single moving dipole, the nondipolar content was larger during initial and late phases of the QRS. It was also suggested that the ventricular repolarization process can be better approximated by a single fixed dipole in normal men.
Authors:
H Tsunakawa; K Hoshino; S Kanesaka; K Harumi; Y Okamoto; Y Teramachi; T Musha
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Japanese heart journal     Volume:  26     ISSN:  0021-4868     ISO Abbreviation:  Jpn Heart J     Publication Date:  1985 May 
Date Detail:
Created Date:  1985-10-22     Completed Date:  1985-10-22     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0401175     Medline TA:  Jpn Heart J     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  319-34     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Adult
Electrocardiography*
Heart / physiology*
Humans
Male
Middle Aged
Minicomputers
Statistics as Topic

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