Detailed ECG analysis of atrial repolarization in humans.

Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc
Fredrik HolmqvistPyotr Platonov

Abstract

Data on human atrial repolarization are scarce since the QRS complex normally obscures its ECG trace. In the present study, consecutive patients with third-degree AV block were studied to better describe the human Ta wave. Forty patients (mean age 75 years, 17 men) were included. All anti-arrhythmic drugs were discontinued before ECG recording. Standard 12-lead ECGs were recorded, transformed to orthogonal leads and studied using signal-averaged P wave analysis. The average P wave duration was 124 +/- 16 ms. The PTa duration was 449 +/- 55 ms (corrected PTa 512 +/- 60 ms) and the Ta duration (P wave end to Ta wave end) was 323 +/- 56 ms. The polarity of the Ta wave was opposite to that of the P wave in all leads. The Ta peaks were located at 196 +/- 55 ms in Lead Y, 216 +/- 50 ms in Lead X, and 335 +/- 92 in Lead Z. No correlation was found between P wave duration and Ta duration, or between Ta peak amplitude and Ta duration. The morphology of the Ta wave was similar regardless of the interatrial conduction. The Ta wave has the opposite polarity, and the duration is generally two to three times that, of the P wave. Although the Ta peak may occasionally be located in the PQ interval during normal AV conduction, it is unlikely th...Continue Reading

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Citations

Jun 22, 2012·Medical & Biological Engineering & Computing·Olaf DösselGunnar Seemann
Jul 19, 2013·Medical & Biological Engineering & Computing·Martin W KruegerOlaf Dössel
Dec 29, 2013·American Journal of Veterinary Research·Manuela PeregoRoberto A Santilli
Sep 28, 2014·The Journal of Physiology·Bastiaan J BoukensRuben Coronel
Jan 23, 2014·The American Journal of Medicine·John Fani Srour, Omar Hyder
Nov 3, 2015·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·David M GermanLarisa G Tereshchenko
Jan 7, 2016·Frontiers in Physiology·Minimol BalakrishnanSoma Guhathakurta
Mar 1, 2011·Journal of Electrocardiology·Martin Wolfgang KruegerOlaf Dössel
Jul 24, 2012·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Pyotr G Platonov
May 25, 2016·Journal of Electrocardiology·Philip Langley, Jane Caldwell
Jun 2, 2017·Journal of the American Veterinary Medical Association·Matthew BootheRandolph L Winter
Nov 7, 2018·Biomedical Engineering Online·Wei-Hua TangYenming J Chen
Jul 24, 2012·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Sengottuvel SenthilnathanMuralidharan R Thoddi

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