F-wave Amplitude Stability on Multiple Electrocardiogram Leads in Atrial Fibrillation

Abstract : Fibrillatory wave (f-wave) amplitude correlates with left atrium (LA) size in certain electrocardiogram (ECG) leads and it is regarded as a predictor of ablation therapy outcome for atrial fibrillation (AF). This study aims at assessing the temporal stability of f-wave amplitude measures throughout the recording and determining the minimum signal length necessary to characterize them accurately in ECG leads. In a set of standard ECGs acquired in 34 persistent AF patients, we determined the minimum temporal window length W such that the related amplitude value accurately correlated with that from the whole atrial activity (AA) signal in leads I, II, V 1-V 6 (threshold Pearson's correlation coefficient R = 0.9). Subsequently, we tested intrarecord-ing correlation between amplitude values obtained in two distinct W-second AA signal excerpts. This procedure was performed both on the original AA signal and on its principal component analysis (PCA) rank-1 approximation.
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Computing in Cardiology, Sep 2015, Nice, France. CinC Papers on-line
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Contributeur : Olivier Meste <>
Soumis le : mardi 20 octobre 2015 - 22:33:13
Dernière modification le : vendredi 23 octobre 2015 - 01:05:19

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Marianna Meo, Antonio Hidalgo-Muñoz, Vicente Zarzoso, Olivier Meste, Gabriel Decebal Latcu, et al.. F-wave Amplitude Stability on Multiple Electrocardiogram Leads in Atrial Fibrillation. Computing in Cardiology, Sep 2015, Nice, France. CinC Papers on-line. <hal-01217233>

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