Analysis of the heat propagation during cardiac ablation with cooling of the esophageal wall : a bidimensional computational modeling

Faria, S. de S.; Souza, P. C. de; Justa, C. F. da; Rosa, S. de S. R. F.; Rocha, Adson Ferreira da

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dc.contributor.author	Faria, S. de S.	-
dc.contributor.author	Souza, P. C. de	-
dc.contributor.author	Justa, C. F. da	-
dc.contributor.author	Rosa, S. de S. R. F.	-
dc.contributor.author	Rocha, Adson Ferreira da	-
dc.date.accessioned	2022-07-05T14:51:45Z	-
dc.date.available	2022-07-05T14:51:45Z	-
dc.date.issued	2022	-
dc.identifier.citation	FARIA, S. de S. et al. Analysis of the heat propagation during cardiac ablation with cooling of the esophageal wall: a bidimensional computational modeling. In: BASTOS FILHO, T. F.; Caldeira, E. M. de Oliveira; FRIZERA NETO, A. (ed.) BRAZILIAN CONGRESS ON BIOMEDICAL ENGINEERING, 27., 2022. IFMBE Proceedings, v. 83. Springer, Cham. DOI: https://doi.org/10.1007/978-3-030-70601-2_16.	pt_BR
dc.identifier.uri	https://repositorio.unb.br/handle/10482/44099	-
dc.language.iso	Inglês	pt_BR
dc.publisher	Springer	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Analysis of the heat propagation during cardiac ablation with cooling of the esophageal wall : a bidimensional computational modeling	pt_BR
dc.type	Trabalho	pt_BR
dc.subject.keyword	Ablação cardíaca	pt_BR
dc.subject.keyword	Ablação de cateteres	pt_BR
dc.subject.keyword	Modelação por computador	pt_BR
dc.subject.keyword	Lesão térmica	pt_BR
dc.subject.keyword	Arrefecimento esofágico	pt_BR
dc.identifier.doi	https://doi.org/10.1007/978-3-030-70601-2_161	pt_BR
dc.description.abstract1	Atrial fibrillation (AF) is a cardiac arrhythmia that affects around 33 million people worldwide. A standard form of treatment for AF is cardiac ablation with the radiofrequency catheter (RFCA). RFCA generates heat through the ablation electrode, and this process can cause severe lesions in the atrial and esophageal tissues. This work presents a two-dimensional computational model that uses geometry and boundary conditions that approximate cardiac ablation conditions with a non-irrigated catheter. The paper’s objective is to simulate the RFCA and analyze the heat propagation during cardiac ablation when the esophageal wall is cooled down. The esophagus, the connective tissue, and the heart wall were simulated, assuming laminar blood flow in the heart wall. The simulated electrode temperatures were 60, 70, and 80 °C for 60 seconds with constant peak voltage. The cooling temperature was 0 °C. The results showed that cooling decreases the temperature between tissues. The temperature in connective-cardiac tissue dropped by approximately 6.51%. In the esophageal-connective tissue, the temperature decreased by about 28.22%. In all cases, there was also a slowing in temperature increase, which can help prevent tissue damage. The results suggest that the method has significant potential for improving the safety of RFCA.	pt_BR
dc.description.unidade	Faculdade de Tecnologia (FT)	-
dc.description.unidade	Departamento de Engenharia Elétrica (FT ENE)	-
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