Document Detail

A conceptual basis for pacing waveforms.
MedLine Citation:
PMID:  8865215     Owner:  NLM     Status:  MEDLINE    
A model is developed that allows evaluation of the pacing efficacy of different stimulus waveforms. It treats the heart as having a first order time constant and enables ready visualization of the time course of the effective voltage within the heart. For pacemakers, where the stimulus pulse is produced by the discharge of a capacitor, the voltage within the heart rapidly rises to a peak and then more slowly decays to zero. The time interval at which the peak occurs defines the optimal duration, i.e., the shortest duration with minimal pacing voltage. Characteristics are developed that show the changes in optimal duration and pacing threshold for changes in the pacemaker's output capacitor and for differences in lead impedance and time constant of the heart.
B G Cleland
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  19     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1996 Aug 
Date Detail:
Created Date:  1997-01-15     Completed Date:  1997-01-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1177-85     Citation Subset:  IM    
Telectronics Pacing Systems, Sydney, Australia.
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MeSH Terms
Cardiac Pacing, Artificial*
Heart / physiology*
Models, Cardiovascular*

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

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