Unipolar electrogram‐based voltage mapping with far‐field cancellation to improve detection of abnormal atrial substrate during atrial fibrillation

Introduction An important substrate for atrial fibrillation (AF) is fibrotic atrial myopathy. Identifying low voltage, myopathic regions during AF using traditional bipolar voltage mapping is limited by the directional dependency of wave propagation. Our objective was to evaluate directionally indep...

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Bibliographic Details
Published in:Journal of cardiovascular electrophysiology 2021-06, Vol.32 (6), p.1572-1583
Main Authors: Ragot, Don, Nayyar, Sachin, Massin, Sophia Z., Ha, Andrew C. T., Singh, Sheldon M., Labos, Christopher, Suszko, Adrian, Dalvi, Rupin, Chauhan, Vijay S.
Format: Article
Language:English
Subjects:
Algorithms
atrial fibrillation
Cardiac arrhythmia
Catheters
far‐field signal
Fibrillation
human
Mapping
Myopathy
signal processing
substrate mapping
unipolar electrogram
Voltage
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Summary:Introduction An important substrate for atrial fibrillation (AF) is fibrotic atrial myopathy. Identifying low voltage, myopathic regions during AF using traditional bipolar voltage mapping is limited by the directional dependency of wave propagation. Our objective was to evaluate directionally independent unipolar voltage mapping, but with far‐field cancellation, to identify low‐voltage regions during AF. Methods In 12 patients undergoing pulmonary vein isolation for AF, high‐resolution voltage mapping was performed in the left atrium during sinus rhythm and AF using a roving 20‐pole circular catheter. Bipolar electrograms (EGMs) (Bi) 
ISSN:1045-3873
1540-8167
DOI:10.1111/jce.14999