Beat to beat wavelet variability in atrial fibrillation

Atrial fibrillation (AF) is a complex phenomenon, related with a multitude of factors, including the electrical properties of the atrial substrate. The purpose of this work is to present a method that highlights electrocardiographic differences between normal subjects and patients with paroxysmal AF...

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Bibliographic Details
Main Authors: Filos, D., Chouvarda, I., Dakos, G., Vassilikos, V., Maglaveras, N.
Format: Conference Proceeding
Language:English
Subjects:
Atrial fibrillation
Electrocardiography
Lead
Morphology
Substrates
Wavelet analysis
Wavelet transforms
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Summary:Atrial fibrillation (AF) is a complex phenomenon, related with a multitude of factors, including the electrical properties of the atrial substrate. The purpose of this work is to present a method that highlights electrocardiographic differences between normal subjects and patients with paroxysmal AF episodes (PAF), potentially related with substrate differences. Vectorcardiography recordings are considered and, for each lead (X-Y-Z), on a beat by beat basis, a steady window before QRS, corresponding to the atrial activity, is analysed via continuous wavelet transform. Wavelet-based parameters are calculated and compared between the normal and AF group, with the beat to beat variation of wavelet energy as the most important feature showing a significantly higher variability in the AF group.
ISSN:1094-687X
1558-4615
2694-0604
DOI:10.1109/IEMBS.2011.6090215