Improved frequency-domain analysis of ventricular late potentials

Lin, Chun‐Cheng

doi:10.1109/cic.2005.1588141

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“…The necrosis or ischemic death of myocardial cells causes the formation of high-resistivity areas, where the propagation of cardiac action potential is delayed. This phenomenon affects the electrocardiographic signal with the presence of electrical activity, although of low intensity, between the end of the QRS complex and the initial part of the ST segment, where it should not be ( Figure 1 ) [ 1 ].…”

Section: Introductionmentioning

confidence: 99%

A Method for Ventricular Late Potentials Detection Using Time-Frequency Representation and Wavelet Denoising

Gadaleta

Giorgio

2012

ISRN Cardiology

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This study proposes a method for ventricular late potentials (VLPs) detection using time-frequency representation and wavelet denoising in high-resolution electrocardiography (HRECG). The analysis is performed both with the signal averaged electrocardiography (SAECG) and in real time. A comparison between the temporal and the time-frequency analysis is also reported. In the first analysis the standard parameters QRSd, LAS40, and RMS40 were used; in the second normalized energy in time-frequency domain was calculated. The algorithm was tested adding artificial VLPs to real ECGs.

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Section: Introductionmentioning

confidence: 99%