Document Detail

Observations of pacemaker pulses in high-bandwidth electrocardiograms and Dower-estimated vectorcardiograms.
MedLine Citation:
PMID:  21130466     Owner:  NLM     Status:  In-Data-Review    
BACKGROUND: Electronic pacemaker pulses are poorly reproduced in computerized electrocardiogram (ECG) tracings, impairing both automated and human interpretation. In this study, a high-bandwidth system is used to examine ECG and vectorcardiogram characteristics of pacemaker pulses.
METHODS: In 69 subjects with artificial pacemakers, electrocardiograms were recorded at 75 000 samples per second with a high-bandwidth ECG system (GE Healthcare, Milwaukee, WI). Vectorcardiograms, as estimated with the Dower transform, were examined.
RESULTS: Pulse loops in the vectorcardiogram consisted of distinct discharge and recharge waves, with an angle difference of 174° ± 10° (mean ± SD) in 3 dimensions. Atrial pulses were on average oriented anteriorly, superiorly, and to the left; right ventricular pulses were oriented posteriorly, superiorly, and to the right; and left ventricular pulses were oriented posteriorly, inferiorly, and to the right. Other details of pacemaker pulses could be readily observed.
CONCLUSIONS: The high-bandwidth ECG has the potential to improve interpretation of paced rhythms in computerized ECGs.
Jonathon Koenig; Alan V Sahakian; Anthony Ricke; Steven Swiryn
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Publication Detail:
Type:  Journal Article     Date:  2010-12-03
Journal Detail:
Title:  Journal of electrocardiology     Volume:  44     ISSN:  1532-8430     ISO Abbreviation:  J Electrocardiol     Publication Date:    2011 Mar-Apr
Date Detail:
Created Date:  2011-02-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  275-81     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 Elsevier Inc. All rights reserved.
Robert R. McCormick School of Engineering, Northwestern University, Evanston, IL, USA.
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