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Separating atrial near fields and atrial far fields in simulated intra-Atrial electrograms

Schicketanz, Leonie; Unger, Laura Anna; Sánchez, Jorge; Dössel, Olaf; Loewe, Axel ORCID iD icon


The detailed characterization of complex forms of atrial flutter relies on the correct interpretation of intra-atrial electrograms. For this, the near fieldcomponents, which represent the local electrical activity, are decisive. However, far field components arising from distant electrical sources in the atria can obscure the diagnosis.We developed a method to separate and characterize atrial near field and atrial far field components from bipolar intra-atrial electrograms. First, a set of bipolar electrograms was created by simulating different propagation scenarios representing common clinical depolarizationpatterns. Second, near and far fields were detected as active segments usinga non-linear energy operator-based approach. Third, the maximum slope and the spectralpower were extracted as features for all active segments. Active segments were grouped accounting for both the timing and the location of their occurrence. In a last step, the active segments were classified in near and far fields by comparing their feature values to a threshold.All active segments were detected correctly. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000141726
Veröffentlicht am 13.01.2022
DOI: 10.1515/cdbme-2021-2045
Zitationen: 1
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Biomedizinische Technik (IBT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2364-5504
KITopen-ID: 1000141726
Erschienen in Current Directions in Biomedical Engineering
Verlag De Gruyter
Band 7
Heft 2
Seiten 175-178
Schlagwörter atrial flutter, atrial near field, atrial far field, cardiac modeling, electrogram
Nachgewiesen in Dimensions
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