Document Detail


Analysis of beat-to-beat variability of ventricular late potentials by a spectro-temporal technique in patients with Chagas' disease.
MedLine Citation:
PMID:  17271071     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
The aim of this paper is to analyze the beat-to-beat variability of ventricular late potentials (LP) in high resolution ECG (HRECG) records of patients with Chagas' disease. In order to evaluate the LP activity, we propose a method which computes the bi-dimensional (2-D) cross-correlation between a template spectro-temporal (STM) of LP and the STM of each individual beat of the HRECG record. As LP detection parameter, we used the maximum value of the 2-D cross-correlation multiplied by a noise correction factor. The method was applied in HRECG records of eight Chagasic patients with high myocardial damage Our results show that three patients have a low beat-to-beat variability of the detection parameter, reflecting the presence of reproducible and stable LP in their HRECG records. However, the other five patients show a high or moderate variability of the detection parameter, reflecting the possible existence of beat-to-beat variable LP.
Authors:
E Laciar; R Jané
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  5     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2004  
Date Detail:
Created Date:  2007-02-02     Completed Date:  2007-06-08     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3605-8     Citation Subset:  -    
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