98280 20230914083306.0 doi 10.23919/CinC49843.2019.9005931 sideral 121998 ART-2019-121998 eng Riccio, J. Universidad de Zaragoza (orcid)0000-0002-6264-4229 Characterization of Propagation Patterns with Omnipolar EGM in Epicardial Multi-Electrode Arrays 2019 Access copy available to the general public Unrestricted Omnipolar Electrogram (OP-EGM) is a recently proposed technique to characterize myocardial propagation in multi-electrode catheters regardless of the angle between propagation direction and catheter bipolar. This work aims to evaluate the accuracy of atrial propagation parameters obtained with OP-EGM in sinus rhythm (SR) and in different patterns of atrial fibrillation (AF).Real and simulated unipolar electrograms (u-EGMs) were used in this study. For both types of data, conduction velocity was obtained for each clique of 4 neighbour electrodes using OP-EGM. As a reference, conduction velocity was also computed from local activation times (LATs) using a linear propagation model.Analysis of simulated data showed that conduction velocity had good concordance with propagation patterns for both estimations, although the LAT-based errors were lower in most of the cases. When conduction velocity magnitude (CV) was 1 mm/ms, its estimation errors (expressed as mean ± std) calculated with OP-EGM and from LATs were 0.053 ± 0.005 mm/ms and 0.003 ±2.1 ×10-5 mm/ms, respectively, when focus was at 30 mm from the bottom of the tissue slice, while propagation direction angular errors were 6.64 ± 4.3°and 4.35 ± 2.8°. In real data, maps obtained with OP-EGM presented smoother and more coherent patterns than those based on LATs. info:eu-repo/grantAgreement/EC/H2020/766082/EU/MultidisciplinarY training network for ATrial fibRillation monItoring, treAtment and progression/MY-ATRIA This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 766082-MY-ATRIA info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 0.296 2019 Computer Science (miscellaneous) 2019 Cardiology and Cardiovascular Medicine 2019 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Alcaine, A. (orcid)0000-0002-0166-2837 De Groot, N.M.S. Houben, R. Laguna, P. Universidad de Zaragoza (orcid)0000-0003-3434-9254 Martínez, J.P. Universidad de Zaragoza (orcid)0000-0002-7503-3339 5008 800 Universidad de Zaragoza Dpto. Ingeniería Electrón.Com. Área Teoría Señal y Comunicac. 46 (2019), [4 pp] Comput. cardiol. Computing in Cardiology 2325-8861 255707 http://zaguan.unizar.es/record/98280/files/texto_completo.pdf Versión publicada 2745056 http://zaguan.unizar.es/record/98280/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:98280 articulos driver 2023-09-13-10:56:09 ARTICLE