Effect of bipolar electrode orientation on local electrogram properties

Heart Rhythm : the Official Journal of the Heart Rhythm Society
Masateru TakigawaPierre Jaïs

Abstract

The direct effect of bipolar orientation on electrograms (EGMs) remains unknown. The purpose of this study was to examine the variation of EGMs with diagonally orthogonal bipoles. The HD-32 Grid catheter (Abbott, Minneapolis, MN) can assess the effect of bipolar orientation while keeping the interelectrode distance and center unchanged. Seven sheep with anterior myocardial infarction were analyzed using diagonally orthogonal electrode pairs across splines by comparing local EGMs from each pair of opposing electrodes {eg. A1-B3 (southeast direction [SE]) vs A3-B1 (northeast direction [NE])}. A total of 4084 EGMs (1 in each direction) were analyzed for 2042 sites (544 in the infarcted area, 488 in the border area, and 1010 in the normal area). The higher and lower voltages measured using each pair of opposing electrodes significantly differed (1.10 mV [0.43-2.56 mV] vs 0.69 mV [0.28-1.58 mV]; P < .0001), and the median variation was 0.28 mV (0.11-0.80 mV) (31.7% [16.0%-48.9%]). The voltage variation was maximized to 48.7% (37.7%-61.6%) (P < .0001) on sites where the activation wavefront was perpendicular to the one bipolar direction and parallel to the other. A total of 594 of 719 (82.6%) sites with the voltage <0.5 mV and 539 of...Continue Reading

Citations

Dec 6, 2018·Journal of Cardiovascular Electrophysiology·Nicolas ClementyDominique Babuty
Sep 11, 2019·Circulation. Arrhythmia and Electrophysiology·Kenji OkuboPaolo Della Bella
Oct 11, 2019·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Riccardo ProiettiTarvinder Dhanjal
Jul 28, 2020·Pacing and Clinical Electrophysiology : PACE·Luca De MattiaGianfranco Buja
Sep 12, 2020·Pacing and Clinical Electrophysiology : PACE·Nilubon MethachittiphanArun R Sridhar
Jun 21, 2020·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Quentin Voglimacci-StephanopoliPhilippe Maury
Sep 26, 2020·JACC. Clinical Electrophysiology·Saman Nazarian, Satish Misra
Mar 21, 2020·JACC. Clinical Electrophysiology·Andreu Porta-Sánchez
Mar 31, 2021·Journal of Cardiovascular Translational Research·Lisette J M E van der DoesNatasja M S de Groot
Oct 8, 2020·Wiley Interdisciplinary Reviews. Systems Biology and Medicine·Cesare CorradoSteven A Niederer
Jun 19, 2021·Circulation. Arrhythmia and Electrophysiology·Mathijs S van SchieNatasja M S de Groot
Aug 10, 2021·Heart Rhythm : the Official Journal of the Heart Rhythm Society·Edward J CiaccioHasan Garan
Dec 9, 2021·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·Natasja M S de GrootUNKNOWN ESC Scientific Document Group

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