Document Detail


THE Q WAVE IN L III AND AVF OF THE ELECTROCARDIOGRAM. A VECTORCARDIOGRAPHIC ANALYSIS WITH THE USE OF THE FRANK SYSTEM.
MedLine Citation:
PMID:  14131398     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Seventy-three consecutive patients with a Q wave in Lead III and aVF in the electrocardiogram were studied. Vectorcardiograms were recorded with the use of the Frank system. In 32 cases the ECG's were compatible with the diagnosis of an inferior myocardial infarction based on a Q wave in Lead III and/or aVF greater than 0.04 second duration and greater than 25 per cent of the amplitude of the R wave. In this group, there were 16 patients with coronary disease and the VCG confirmed the electrocardiographic diagnosis of an infarction in 14 cases. In 13 of the other 16 cases without history of coronary disease the VCG did not suggest the presence of an infarction. In all 17 cases with questionable electrocardiographic diagnosis of an inferior infarction, and without history of coronary disease, the VCG denied the presence of an infarction. In 18 cases with small Q III or Q aVF the VCG's were within normal limits. In two cases with normal Q III and Q aVF the VCG's did not detect the presence of an infarction in both cases. The vectorcardiographic diagnosis of an inferior myocardial infarction was based on the superior orientation (at or above 360 degrees) of the 10, 20, 25 and 30-msec vectors in the frontal plane, superior displacement of the maximum QRS vector and clockwise rotation. In the left sagittal plane the 10, 20, 25 and 30-msec vectors were oriented at or above 180 degrees with the loop rotating counterclockwise. The data presented suggest that vectorcardiography is a useful adjunct to electrocardiography in the diagnosis of an inferior myocardial infarction.
Authors:
A BENCHIMOL; M W ROBERTS; E G DIMOND
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  California medicine     Volume:  100     ISSN:  0008-1264     ISO Abbreviation:  Calif Med     Publication Date:  1964 Mar 
Date Detail:
Created Date:  1964-07-01     Completed Date:  1996-12-01     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  0410260     Medline TA:  Calif Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  168-74     Citation Subset:  OM    
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MeSH Terms
Descriptor/Qualifier:
Electrocardiography*
Myocardial Infarction*
Vectorcardiography*
Comments/Corrections

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


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