NDLI: Analysis of beat-to-beat variability of ventricular late potentials by a spectro-temporal technique in patients with Chagas' disease

Content Provider	IEEE Xplore Digital Library
Author	Laciar, E. Jane, R.
Copyright Year	2004
Description	Author affiliation: Dept. ESAII, CREB, Universitat Politècnica de Catalunya, Barcelona, Spain; Gabinete de Tecnología Médica, Universidad Nacional de San Juan, San Juan, Argentina (Laciar, E.)
Abstract	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.
Starting Page	3605
Ending Page	3608
File Size	253684
Page Count	4
File Format	PDF
ISBN	0780384393
DOI	10.1109/IEMBS.2004.1404013
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-01
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Virtual manufacturing Background noise Band pass filters Signal resolution Electrocardiography Frequency Signal mapping Fractionation Cardiac disease Cardiovascular diseases ventricular late potentials Bi-dimensional cross-correlation high resolution ECG signals spectro-temporal maps
Content Type	Text
Resource Type	Article

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