| Variation in the precordial QRS transition zone in normal subjects. | |
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MedLine Citation:
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PMID: 3351408 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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From body surface potential map data for 51 normal young men (with QRS axis between 0 and 90 degrees) both the spatial QRS area vector and the isoarea map of the QRS were obtained. Acting on Grant's assumption that the transition zone defined a plane perpendicular to the spatial QRS vector, we determined the angular shift in altitude and azimuth required to move the spatial vector of each individual to the position of the group mean. We then shifted the precordial map of the transition zone of each individual with the same angular correction. These resulting transition zone boundaries clustered much closer to each other, but did not move into absolute coincidence. We interpreted the nearness-to-fit to be an estimate of the degree to which the precordial QRS configurations conformed to a common simple vector or dipolar pattern. |
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Authors:
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L G Horan; M R Sridharan; R C Hand; N C Flowers |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of electrocardiology Volume: 21 ISSN: 0022-0736 ISO Abbreviation: J Electrocardiol Publication Date: 1988 Jan |
Date Detail:
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Created Date: 1988-05-03 Completed Date: 1988-05-03 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0153605 Medline TA: J Electrocardiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 25-9 Citation Subset: IM |
Affiliation:
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Veterans Administration Medical Center, Augusta, Georgia. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Electrocardiography / methods* Heart / physiology Humans Male Membrane Potentials Middle Aged Reference Values |
| Grant Support | |
ID/Acronym/Agency:
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33692//PHS HHS; 33715//PHS HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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