Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.

Epicardial high-density electrical mapping is a well-established experimental instrument to monitor in vivo the activity of the atria in response to modulations of the autonomic nervous system in sinus rhythm. In regions that are not accessible by epicardial mapping, noncontact endocardial mapping p...

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Autores principales:	Sepideh Sabouri, Elhacene Matene, Alain Vinet, Louis-Philippe Richer, René Cardinal, J Andrew Armour, Pierre Pagé, Teresa Kus, Vincent Jacquemet
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2014
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e9cef6f5c0474d749467697ee69f1822
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spelling	oai:doaj.org-article:e9cef6f5c0474d749467697ee69f18222021-11-18T08:29:43ZSimultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.1932-620310.1371/journal.pone.0091165https://doaj.org/article/e9cef6f5c0474d749467697ee69f18222014-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24598778/?tool=EBIhttps://doaj.org/toc/1932-6203Epicardial high-density electrical mapping is a well-established experimental instrument to monitor in vivo the activity of the atria in response to modulations of the autonomic nervous system in sinus rhythm. In regions that are not accessible by epicardial mapping, noncontact endocardial mapping performed through a balloon catheter may provide a more comprehensive description of atrial activity. We developed a computer model of the canine right atrium to compare epicardial and noncontact endocardial mapping. The model was derived from an experiment in which electroanatomical reconstruction, epicardial mapping (103 electrodes), noncontact endocardial mapping (2048 virtual electrodes computed from a 64-channel balloon catheter), and direct-contact endocardial catheter recordings were simultaneously performed in a dog. The recording system was simulated in the computer model. For simulations and experiments (after atrio-ventricular node suppression), activation maps were computed during sinus rhythm. Repolarization was assessed by measuring the area under the atrial T wave (ATa), a marker of repolarization gradients. Results showed an epicardial-endocardial correlation coefficients of 0.80 and 0.63 (two dog experiments) and 0.96 (simulation) between activation times, and a correlation coefficients of 0.57 and 0.46 (two dog experiments) and 0.92 (simulation) between ATa values. Despite distance (balloon-atrial wall) and dimension reduction (64 electrodes), some information about atrial repolarization remained present in noncontact signals.Sepideh SabouriElhacene MateneAlain VinetLouis-Philippe RicherRené CardinalJ Andrew ArmourPierre PagéTeresa KusVincent JacquemetPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 9, Iss 3, p e91165 (2014)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sepideh Sabouri Elhacene Matene Alain Vinet Louis-Philippe Richer René Cardinal J Andrew Armour Pierre Pagé Teresa Kus Vincent Jacquemet Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
description	Epicardial high-density electrical mapping is a well-established experimental instrument to monitor in vivo the activity of the atria in response to modulations of the autonomic nervous system in sinus rhythm. In regions that are not accessible by epicardial mapping, noncontact endocardial mapping performed through a balloon catheter may provide a more comprehensive description of atrial activity. We developed a computer model of the canine right atrium to compare epicardial and noncontact endocardial mapping. The model was derived from an experiment in which electroanatomical reconstruction, epicardial mapping (103 electrodes), noncontact endocardial mapping (2048 virtual electrodes computed from a 64-channel balloon catheter), and direct-contact endocardial catheter recordings were simultaneously performed in a dog. The recording system was simulated in the computer model. For simulations and experiments (after atrio-ventricular node suppression), activation maps were computed during sinus rhythm. Repolarization was assessed by measuring the area under the atrial T wave (ATa), a marker of repolarization gradients. Results showed an epicardial-endocardial correlation coefficients of 0.80 and 0.63 (two dog experiments) and 0.96 (simulation) between activation times, and a correlation coefficients of 0.57 and 0.46 (two dog experiments) and 0.92 (simulation) between ATa values. Despite distance (balloon-atrial wall) and dimension reduction (64 electrodes), some information about atrial repolarization remained present in noncontact signals.
format	article
author	Sepideh Sabouri Elhacene Matene Alain Vinet Louis-Philippe Richer René Cardinal J Andrew Armour Pierre Pagé Teresa Kus Vincent Jacquemet
author_facet	Sepideh Sabouri Elhacene Matene Alain Vinet Louis-Philippe Richer René Cardinal J Andrew Armour Pierre Pagé Teresa Kus Vincent Jacquemet
author_sort	Sepideh Sabouri
title	Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
title_short	Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
title_full	Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
title_fullStr	Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
title_full_unstemmed	Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
title_sort	simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.
publisher	Public Library of Science (PLoS)
publishDate	2014
url	https://doaj.org/article/e9cef6f5c0474d749467697ee69f1822
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Simultaneous epicardial and noncontact endocardial mapping of the canine right atrium: simulation and experiment.

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