Evaluation of P wave signal-averaged electrocardiographic filtering and analysis methods

American Heart Journal
F A EhlertJ S Steinberg

Abstract

The purpose of this study was to evaluate the signal processing and analysis methods currently in use for the P wave signal-averaged electrocardiogram and to define optimal parameters for its use. P wave signal-averaged electrocardiograms using the QRS as a trigger for alignment of the analysis window were obtained in 15 subjects with prior atrial fibrillation and 15 controls. Five methods of signal filtering (unidirectional, bidirectional, finite impulse response, least squares fit, and spectral fast-Fourier transform) and three filter frequencies (14, 29, and 60 Hz) were compared with logistic regression analysis. Analysis techniques, including P wave vector duration, individual orthogonal lead duration, and terminal root mean square voltage were also evaluated for the strength of their association with the occurrence of atrial fibrillation. The least-squares fit filter with bandwidth filtering of 29 to 250 Hz produced the strongest association with atrial fibrillation (odds ratio 26). A high correlation (r > 0.92) was noted among the individual orthogonal leads; however, neither individual leads nor total atrial activation determined from individual leads demonstrated a superior association with atrial fibrillation when comp...Continue Reading

References

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Citations

Apr 16, 1998·Journal of Electrocardiology·J E Tamis, J S Steinberg
Nov 15, 2002·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Marcin RosiakJan Ruta
Aug 8, 2008·Pacing and Clinical Electrophysiology : PACE·Federica CensiPietro Bartolini
Dec 22, 2005·The Annals of Thoracic Surgery·R Andrew Archbold
May 15, 2007·Journal of the American College of Cardiology·Jason P BrownSanjiv M Narayan
Feb 10, 2017·BMC Complementary and Alternative Medicine·Haebeom LeeYoung-Bae Park

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