Document Detail

Surface ECG vector characteristics of organized and disorganized atrial activity during atrial fibrillation.
MedLine Citation:
PMID:  15534816     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: The aim of this study was to examine atrial organization from vectorcardiograms (VCGs) derived from the surface ECG of atrial fibrillatory waves. METHODS: We retrieved ECGs recorded during ventricular asystole from 22 patients with AF undergoing ablation of the AV junction. The synthesized VCG of each f-wave cycle of each ECG and its plane of best fit, described by azimuth and elevation angles relative to the frontal plane, were computed. RESULTS: Fifteen of the 22 ECGs had at least 30% of the planes in a single 30-degree region of azimuth angles. Of these 15, 12 had the greatest percentage of planes with azimuth angles within 30 degrees of the sagittal plane; two were near the frontal plane; and one near the right anterior oblique plane. CONCLUSIONS: Varying degrees of organization were observed from VCGs of fibrillatory waves with the more organized examples having planes predominately near the sagittal plane.
Jason Ng; Alan V Sahakian; Westby G Fisher; Steven Swiryn
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  37 Suppl     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  2004  
Date Detail:
Created Date:  2004-11-09     Completed Date:  2005-03-03     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  91-7     Citation Subset:  IM    
Department of Electrical and Computer Engineering, Northwestern University, Evanston, IL, USA.
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MeSH Terms
Atrial Fibrillation / etiology,  physiopathology*
Atrioventricular Node / surgery
Catheter Ablation
Heart Arrest, Induced
Heart Atria / physiopathology*
Heart Ventricles / physiopathology
Imaging, Three-Dimensional
Pacemaker, Artificial / classification
Signal Processing, Computer-Assisted
Vectorcardiography* / classification,  methods

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

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