PMID: 8945071Nov 1, 1996Paper

Analysis of the p wave in the signal-averaged electrocardiogram: normal values and reproducibility

Pacing and Clinical Electrophysiology : PACE
M HofmannA Schömig

Abstract

To apply p wave analysis of the signal-averaged electrocardiogram (SAECG) clinically, the knowledge of normal values and the verification of highly reproducible measurements are essential. In 40 healthy volunteers (ages 23-37 years), an SAECG of the p wave was performed and then repeated after 1 week and 1 month. In addition to Simson analysis (unidirectional and bidirectional filters), the data were filtered with finite impulse response (FIR) and least squares fit (LSQ) filters to obtain a better differentiation between the end of the p wave and QRS onset. All recordings were evaluated by two independent observers, and the following parameters were calculated: the duration of the p wave in the three unfiltered leads; and for the vector magnitude of the three leads x, y, and z: the duration of the p wave and the root mean square voltage of its last 30, 20, and 10 ms. The average p wave duration was significantly different among the various filter techniques: 135 +/- 7 ms (unidirectional); 97 +/- 8 ms (bidirectional); 109 +/- 8.5 ms (FIR); and 126 +/- 10 ms (LSQ) (P = 0.001 for each comparison). There was a good reproducibility of the data analyzed with the Simson method (R = 0.80-0.91). Filtering with the FIR and LSQ leads to a...Continue Reading

References

Sep 15, 1991·The American Journal of Cardiology·P J StaffordR Vincent
Aug 1, 1995·Journal of the American College of Cardiology·A N CheemaJ J Goldberger
Jun 1, 1993·Journal of the American College of Cardiology·S A Guidera, J S Steinberg
Feb 1, 1994·Journal of the American College of Cardiology·R H Falk, A Pollak

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Citations

Feb 1, 2005·Pacing and Clinical Electrophysiology : PACE·Ahmad A ElesberPaul A Friedman
Jul 21, 2009·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Rasmus HavmöllerPyotr Platonov
Jan 9, 2014·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Coralie BlancheMarc Zimmermann
Apr 27, 2001·IEEE Transactions on Bio-medical Engineering·J CarlsonS B Olsson
Sep 4, 2012·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Coralie BlancheMarc Zimmermann
Apr 25, 2020·Journal of Clinical Medicine·Moonki JungSeung Yong Shin
Sep 27, 2003·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Dilek CiçekErdem Diker

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