Document Detail

Beat to beat surface recording and averaging of His-Purkinje activity in man.
MedLine Citation:
PMID:  6644217     Owner:  NLM     Status:  MEDLINE    
A non-invasive technique has been used to record the electrical activity of the His-Purkinje System (HPS) on the body surface involving shielding, high gain band pass filtering and averaging of bipolar chest ECGs (V6-V6R). The measurements were made in the Berlin Magnetically Shielded Room (BMSR) which reduces the background noise level (almost white) to less than 0.4 microVrms (measured for a bandwidth between 0.1 Hz and 300 Hz), so that individual HPS body surface signals were limited only by patient inherent noise. Signal amplitudes greater than 1 microV were detectable in single beats. In addition, for best resolution, signal averaging was accomplished with software triggers referred to either the QRS complex or the P wave. A P-wave trigger is of most interest in clinical use because averaging techniques, even in the case of A-V blocks of different degree, can be applied.
S N Erné; R R Fenici; H D Hahlbohm; H P Lehmann; Z Trontelj
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of electrocardiology     Volume:  16     ISSN:  0022-0736     ISO Abbreviation:  J Electrocardiol     Publication Date:  1983 Oct 
Date Detail:
Created Date:  1984-01-27     Completed Date:  1984-01-27     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0153605     Medline TA:  J Electrocardiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  355-62     Citation Subset:  IM    
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MeSH Terms
Bundle of His / physiology*
Electrocardiography / methods*
Heart Conduction System / physiology*
Heart Rate*
Purkinje Fibers / physiology*

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

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