PMID: 11902144Mar 21, 2002Paper

Novel electrophysiologic parameter of dispersion of atrial repolarization: comparison of different atrial pacing methods

Journal of Cardiovascular Electrophysiology
Masahiro OgawaKeijiro Saku

Abstract

Heterogeneity of ventricular repolarization plays a major role in reentrant tachyarrhythmias in cardiac tissue. However, the role of atrial repolarization added activation time (AT) to refractoriness in atrial vulnerability has not been investigated in detail. The study population consisted of 34 patients: 18 with atrial fibrillation (AF) and 16 without AF (control group). The effective refractory periods (ERPs) in the right atrial appendage, low lateral right atrium, high right septum, and distal coronary sinus, and ATs from P wave onset to each electrogram during sinus rhythm and right atrial appendage, low lateral right atrial, high right septal, distal coronary sinus, and biatrial pacing were measured. Atrial recovery time, defined as the sum of AT and ERP, and its dispersions during sinus rhythm, right atrial appendage, low lateral right atrial, high right septal, distal coronary sinus, and biatrial pacing were calculated. Both ERP dispersion and atrial recovery time dispersion during sinus rhythm were significantly greater in the AF group than in the control group. Atrial recovery time dispersion during distal coronary sinus, high right septal, or biatrial pacing was significantly smaller than that during right atrial app...Continue Reading

Citations

Feb 21, 2003·British Journal of Anaesthesia·P D BookerE J Ladusans
Dec 29, 2013·American Journal of Veterinary Research·Manuela PeregoRoberto A Santilli
Aug 22, 2008·Current Cardiology Reports·Sameer Parekh, Kenneth M Stein
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Apr 3, 2021·Frontiers in Physiology·Richard T CarrickPeter S Spector

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