Quantification of Cardiac Ventricular Repolarization and its Spatial Dispersion through the Surface Electrocardiogram

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Authors

  • Pedro D. Arini Adjunct Researcher, National Scientific and Technological Research Council (CONICET) Associate Professor, School of Engineering, University of Buenos Aires (UBA) Argentine Institute of Mathematics, CONICET
  • Eric Laciar Assistant Researcher, National Scientific and Technological Research Council (CONICET) Associate Professor,National University of San Juan (UNSJ) Department of Medical Technology, School of Engineering, National University of San Juan

DOI:

https://doi.org/10.7775/rac.v77i1.2330

Keywords:

T-wave Morphology, QT Interval Dispersion, ECG Decomposition, Risk Factors, Ventricular Repolarization, Dispersion, Sudden Death

Abstract

The ventricular repolarization dispersion (VRD) is determined basically by the heterogeneity of the action potentials in different myocardial regions. Usually the heart responds to certain physiopathological states by producing a VRD increase, which may lead to a malignant ventricular arrhythmia and/or sudden death. For 25 years, the VRD has been quantified with several indexes obtained by computational ECG processing, in order to identify patients with high cardiovascular risk. These indexes are based on the detection of T wave changes in duration or morphology in presence of heart diseases. A revision of the spatial dispersion indexes and their potential as supporting tool for the diagnosis of cardiac risk is presented in this work.

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Published

2025-12-17

Issue

Rev Argent Cardiol 2009 Vol. 77 Issue 1

Section

REVIEW ARTICLES

License

Copyright (c) 2025 Argentine Journal of Cardiology

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