2015 IEEE 35th International Conference on Electronics and Nanotechnology (ELNANO) 2015
DOI: 10.1109/elnano.2015.7146909
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Peculiarities of T wave alternans detection and evaluation

Abstract: This research is aimed at detection and evaluation of beat-to-beat T-wave alternans in electrocardiogram. To reveal diagnostic features related to T-wave alternans, variations in amplitude and shape of T-waves from synthetic and clinical recordings were explored by means of time-domain analysis, Poincare plots, and principal component analysis together with clustering analysis.

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Cited by 2 publications
(3 citation statements)
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“…Entre los mecanismos existentes para medir la inestabilidad eléctrica del corazón en el ECG se encuentran la prolongación del QT, dispersión del QT, potenciales tardíos, alternancia de onda T (TWA) y turbulencia de la frecuencia cardíaca [6]. La TWA ha sido utilizada para el análisis de la repolarización ventricular, que se manifiesta en el ECG como fluctuaciones periódicas de la amplitud de la onda T [7].…”
Section: Introductionunclassified
“…Entre los mecanismos existentes para medir la inestabilidad eléctrica del corazón en el ECG se encuentran la prolongación del QT, dispersión del QT, potenciales tardíos, alternancia de onda T (TWA) y turbulencia de la frecuencia cardíaca [6]. La TWA ha sido utilizada para el análisis de la repolarización ventricular, que se manifiesta en el ECG como fluctuaciones periódicas de la amplitud de la onda T [7].…”
Section: Introductionunclassified
“…For this purpose the ECG signal was twice differentiated and squared, which made it possible to find extremes of QRS complexes and determine the position of R waves on ECG [9]. Then peaks of T waves were identified on ECG.…”
Section: Problem Statementmentioning
confidence: 99%
“…For the analysis of low-amplitude components of electrocardiosignals a combined approach, which includes several stages with the use of methods of analysis of the I-st and the II-nd classes, is encouraged to use: wavelet transformation, decomposition in the basis of eigenvectors, principal component analysis [10][11][12][13]. For tasks of processing of low-amplitude components of ECG the different combinations of these methods can be utilized [3,4,[9][10][11][12][13]. where N is the amount of samples.…”
Section: The Combined Approach For Processing Of Lowamplitude Componementioning
confidence: 99%