Document Detail

Improved electrocardiographic criteria for the diagnosis of inferior myocardial infarction.
MedLine Citation:
PMID:  7094249     Owner:  NLM     Status:  MEDLINE    
New electrocardiographic (ECG) criteria for the diagnosis of inferior myocardial infarction (IMI) are proposed. The criteria are based upon the relationships between portions of the vectorcardiographic (VCG) QRS loop in the frontal plane and the corresponding portions of the ECG QRS complexes recorded in leads II and III. The application of the proposed criteria requires that the tracings be obtained with three-channel ECG machines so that the temporal relationships between the QRS complexes in lead II and those in simultaneously recorded lead III can be inspected. This type of analysis of the ECG permits important features of the contour of the VCG QRS loop to be predicted. The proposed ECG criteria for the diagnosis of IMI are: in the absence of counterclockwise rotation in the frontal plane, (1) Q waves of 30 msec or longer in lead II or (2) regression of initial inferior forces from lead III to lead II. The proposed ECG criteria were evaluated in an initial series of 333 patients and, using a blind experimental design, in a confirmatory series of 94 patients. The performance of the proposed criteria was statistically superior to that of two sets of ECG Q-wave criteria and comparable to that of the VCG criteria of Starr et al.
R Warner; N E Hill; P R Sheehe; S Mookherjee; C T Fruehan; H Smulyan
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Circulation     Volume:  66     ISSN:  0009-7322     ISO Abbreviation:  Circulation     Publication Date:  1982 Aug 
Date Detail:
Created Date:  1982-09-10     Completed Date:  1982-09-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0147763     Medline TA:  Circulation     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  422-8     Citation Subset:  AIM; IM    
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MeSH Terms
Middle Aged
Myocardial Infarction / diagnosis*

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

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