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Authors: Marcos Javier Teperino 1 ; María Paula Bonomini 1 ; Pablo Daniel Cruces 2 and Pedro David Arini 2

Affiliations: 1 Universidad de Buenos Aires, Argentina ; 2 Universidad de Buenos Aires and Instituto Argentino de Matemática, Argentina

ISBN: 978-989-758-069-7

Keyword(s): Ventricular Repolarization Dispersion, T-wave Morphology, Age.

Related Ontology Subjects/Areas/Topics: Biomedical Engineering ; Biomedical Signal Processing ; Cardiovascular Signals

Abstract: Abnormal modifications in ventricular repolarization dispersion (VRD) have been shown to constitute a substrate for malignant arrhythmias. In this work, we have induced abrupt heart rate (HR) changes to young and middle-aged healthy subjects through a Tilt-test and have analyzed the evolution of several VRD indices. Duration ones, based on electrocardiogram intervals; energy ones, developed through a Principal Components Analysis (PCA) in T-wave; and the morphology ones, extracted feature from an absolute T-wave. In both groups, results have shown significant decreases in early repolarization duration. These changes are responsible for the alterations in the total repolarization duration, because T-wave peak-to-end has not shown statistical significance. Moreover, we have found significant decreases in total, early and late repolarization energy, and in the T-wave amplitude. In another sense, we have observed that the repolarization energy obtained by PCA jointly with early T-wave slo pe and amplitude have been able to reflect VRD differences between young and middle-aged subjects. Finally, this work provides the range of values for VRD in normal conditions during abrupt HR changes. Outside this range, we could assume that it exists a cardiac risk. (More)

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Paper citation in several formats:
Javier Teperino, M.; Bonomini , M.; Cruces , P. and Arini , P. (2015). Dynamic Response of Electrocardiographic Indices During Abrupt Heart Rate Changes - Comparison between Young and Middle-aged Subjects.In Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2015) ISBN 978-989-758-069-7, pages 264-269. DOI: 10.5220/0005253102640269

@conference{biosignals15,
author={Marcos Javier Teperino. and María Paula Bonomini . and Pablo Daniel Cruces . and Pedro David Arini .},
title={Dynamic Response of Electrocardiographic Indices During Abrupt Heart Rate Changes - Comparison between Young and Middle-aged Subjects},
booktitle={Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2015)},
year={2015},
pages={264-269},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0005253102640269},
isbn={978-989-758-069-7},
}

TY - CONF

JO - Proceedings of the International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2015)
TI - Dynamic Response of Electrocardiographic Indices During Abrupt Heart Rate Changes - Comparison between Young and Middle-aged Subjects
SN - 978-989-758-069-7
AU - Javier Teperino, M.
AU - Bonomini , M.
AU - Cruces , P.
AU - Arini , P.
PY - 2015
SP - 264
EP - 269
DO - 10.5220/0005253102640269

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