Evento
Dynamic response of electrocardiographic indices during abrupt heart rate changes: comparison between young and middle-aged subjets
Colaboradores:
Loose, Harald; Fred, Ana L. N.; Gamboa, Hugo; Elias, Dirk
Tipo del evento:
Conferencia
Nombre del evento:
8th International Conference on Bio-Inspired Systems and Signal Processing
Fecha del evento:
12/01/2015
Institución Organizadora:
Institute for Systems and Technologies of Information, Control and Communication;
Título del Libro:
BIOSIGNALS 2015: Proceedings of the International Conference on Bio-inspired Systems and Signal Processing
Editorial:
SciTePress Digital Library
ISBN:
978-989-758-069-7
Idioma:
Inglés
Clasificación temática:
Resumen
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 slope 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.
Palabras clave:
Ventricular repolarization dispersion
,
T-wave morphology
,
Age
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Eventos(IAM)
Eventos de INST.ARG.DE MATEMATICAS "ALBERTO CALDERON"
Eventos de INST.ARG.DE MATEMATICAS "ALBERTO CALDERON"
Citación
Dynamic response of electrocardiographic indices during abrupt heart rate changes: comparison between young and middle-aged subjets; 8th International Conference on Bio-Inspired Systems and Signal Processing; Lisbon; Portugal; 2015; 264-269
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