Measurement of ejection fraction with standard thermodilution catheters
Autor(a) principal: | |
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Data de Publicação: | 2002 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UCB |
Texto Completo: | http://hdl.handle.net/123456789/81 https://repositorio.ucb.br:9443/jspui/handle/123456789/7360 |
Resumo: | Right ventricle ejection fraction (RVEF) is clinically used to evaluate right ventricular function. The thermodilution method can be modified to estimate the RVEF. However, this method requires a thermistor with a fast time response in order to yield correct estimates. Digital signal processing techniques that were developed in previous works, allow the use of industry-standard slow time response thermistors for the measurement EF. However, these algorithms were not automated, and the works did not present a complete evaluation of the method’s performance. This article presents a modified automated version of these algorithms, and uses numerical and in vitro simulations to test their performance. In the simulations, the measured ejection fraction was compared to the true ejection fraction. RVEFs ranging from 0.20 to 0.80 were tested for heart rates ranging from 30 to 120 heart beats per min. Statistical analysis of data showed that the new method presents an improved performance. 2002 IPEM. Published by Elsevier Science Ltd. All rights reserved. |
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Santos, Icaro dosRocha, Adson Ferreira daNascimento, Francisco Assis de O.Souza Neto, JoaoValvano, Jonathan W.2016-10-10T03:51:13Z2016-10-10T03:51:13Z2002-02-27SANTOS, Icaro dos at all. Measurement of ejection fraction with standard thermodilution catheters. Medical Engineering & Physics, United Kingdom, v. 24, n. 6, p. 325-335, 2002.http://hdl.handle.net/123456789/81https://repositorio.ucb.br:9443/jspui/handle/123456789/7360Right ventricle ejection fraction (RVEF) is clinically used to evaluate right ventricular function. The thermodilution method can be modified to estimate the RVEF. However, this method requires a thermistor with a fast time response in order to yield correct estimates. Digital signal processing techniques that were developed in previous works, allow the use of industry-standard slow time response thermistors for the measurement EF. However, these algorithms were not automated, and the works did not present a complete evaluation of the method’s performance. This article presents a modified automated version of these algorithms, and uses numerical and in vitro simulations to test their performance. In the simulations, the measured ejection fraction was compared to the true ejection fraction. RVEFs ranging from 0.20 to 0.80 were tested for heart rates ranging from 30 to 120 heart beats per min. Statistical analysis of data showed that the new method presents an improved performance. 2002 IPEM. Published by Elsevier Science Ltd. All rights reserved.Made available in DSpace on 2016-10-10T03:51:13Z (GMT). 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dc.title.pt_BR.fl_str_mv |
Measurement of ejection fraction with standard thermodilution catheters |
title |
Measurement of ejection fraction with standard thermodilution catheters |
spellingShingle |
Measurement of ejection fraction with standard thermodilution catheters Santos, Icaro dos Ejection fraction Thermodilution Thermistor Digital signal processing Neural network |
title_short |
Measurement of ejection fraction with standard thermodilution catheters |
title_full |
Measurement of ejection fraction with standard thermodilution catheters |
title_fullStr |
Measurement of ejection fraction with standard thermodilution catheters |
title_full_unstemmed |
Measurement of ejection fraction with standard thermodilution catheters |
title_sort |
Measurement of ejection fraction with standard thermodilution catheters |
author |
Santos, Icaro dos |
author_facet |
Santos, Icaro dos Rocha, Adson Ferreira da Nascimento, Francisco Assis de O. Souza Neto, Joao Valvano, Jonathan W. |
author_role |
author |
author2 |
Rocha, Adson Ferreira da Nascimento, Francisco Assis de O. Souza Neto, Joao Valvano, Jonathan W. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Santos, Icaro dos Rocha, Adson Ferreira da Nascimento, Francisco Assis de O. Souza Neto, Joao Valvano, Jonathan W. |
dc.subject.por.fl_str_mv |
Ejection fraction Thermodilution Thermistor Digital signal processing Neural network |
topic |
Ejection fraction Thermodilution Thermistor Digital signal processing Neural network |
dc.description.abstract.por.fl_txt_mv |
Right ventricle ejection fraction (RVEF) is clinically used to evaluate right ventricular function. The thermodilution method can be modified to estimate the RVEF. However, this method requires a thermistor with a fast time response in order to yield correct estimates. Digital signal processing techniques that were developed in previous works, allow the use of industry-standard slow time response thermistors for the measurement EF. However, these algorithms were not automated, and the works did not present a complete evaluation of the method’s performance. This article presents a modified automated version of these algorithms, and uses numerical and in vitro simulations to test their performance. In the simulations, the measured ejection fraction was compared to the true ejection fraction. RVEFs ranging from 0.20 to 0.80 were tested for heart rates ranging from 30 to 120 heart beats per min. Statistical analysis of data showed that the new method presents an improved performance. 2002 IPEM. Published by Elsevier Science Ltd. All rights reserved. |
dc.description.version.pt_BR.fl_txt_mv |
Sim |
dc.description.status.pt_BR.fl_txt_mv |
Publicado |
description |
Right ventricle ejection fraction (RVEF) is clinically used to evaluate right ventricular function. The thermodilution method can be modified to estimate the RVEF. However, this method requires a thermistor with a fast time response in order to yield correct estimates. Digital signal processing techniques that were developed in previous works, allow the use of industry-standard slow time response thermistors for the measurement EF. However, these algorithms were not automated, and the works did not present a complete evaluation of the method’s performance. This article presents a modified automated version of these algorithms, and uses numerical and in vitro simulations to test their performance. In the simulations, the measured ejection fraction was compared to the true ejection fraction. RVEFs ranging from 0.20 to 0.80 were tested for heart rates ranging from 30 to 120 heart beats per min. Statistical analysis of data showed that the new method presents an improved performance. 2002 IPEM. Published by Elsevier Science Ltd. All rights reserved. |
publishDate |
2002 |
dc.date.issued.fl_str_mv |
2002-02-27 |
dc.date.accessioned.fl_str_mv |
2016-10-10T03:51:13Z |
dc.date.available.fl_str_mv |
2016-10-10T03:51:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
status_str |
publishedVersion |
format |
article |
dc.identifier.citation.fl_str_mv |
SANTOS, Icaro dos at all. Measurement of ejection fraction with standard thermodilution catheters. Medical Engineering & Physics, United Kingdom, v. 24, n. 6, p. 325-335, 2002. |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/123456789/81 https://repositorio.ucb.br:9443/jspui/handle/123456789/7360 |
identifier_str_mv |
SANTOS, Icaro dos at all. Measurement of ejection fraction with standard thermodilution catheters. Medical Engineering & Physics, United Kingdom, v. 24, n. 6, p. 325-335, 2002. |
url |
http://hdl.handle.net/123456789/81 https://repositorio.ucb.br:9443/jspui/handle/123456789/7360 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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Texto |
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Universidade Católica de Brasília (UCB) |
instacron_str |
UCB |
institution |
UCB |
reponame_str |
Repositório Institucional da UCB |
collection |
Repositório Institucional da UCB |
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