Effects of isoflurane on Tei-index of myocardial performance in healthy dogs

Detalhes bibliográficos
Autor(a) principal: Sousa, Marlos Goncalves
Data de Publicação: 2007
Outros Autores: Carareto, Roberta, De-Nardi, Andrigo Barboza, Brito, Fablo L. C., Nunes, Newton, Camacho, Aparecido Antonio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800963/
http://hdl.handle.net/11449/35292
Resumo: Recently, the Tei-index, a noninvasive index that combines systolic and diastolic time intervals, has been proposed to assess global cardiac performance. However, the effects of isoflurane on the Tei-index have not been characterized. This study aimed at studying the effects of 1.0 minimal alveolar concentration isoflurane anesthesia on the pre-ejection period (PEP), left ventricular ejection time (LVET), PEP/LVET ratio, isovolumic relaxation time (IVRT), stroke index (SI), cardiac index (CI), heart rate (HR), and the Tei-index in healthy unpremedicated dogs. We observed significant increases in PEP, PEP/LVET ratio, IVRT, and TEI, whose maximal increases obtained throughout the study were 47%, 48%, 78%, and 56%, respectively. The LVET and HR did not change significantly, whereas the SI and CI decreased during anesthesia (29% and 26%, respectively). In conclusion, isoflurane produced direct effects on the Tei-index. The changes in systolic and diastolic parameters were supportive of this finding and were consistent with an overall impairment of left ventricular function during anesthesia.
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spelling Effects of isoflurane on Tei-index of myocardial performance in healthy dogsRecently, the Tei-index, a noninvasive index that combines systolic and diastolic time intervals, has been proposed to assess global cardiac performance. However, the effects of isoflurane on the Tei-index have not been characterized. This study aimed at studying the effects of 1.0 minimal alveolar concentration isoflurane anesthesia on the pre-ejection period (PEP), left ventricular ejection time (LVET), PEP/LVET ratio, isovolumic relaxation time (IVRT), stroke index (SI), cardiac index (CI), heart rate (HR), and the Tei-index in healthy unpremedicated dogs. We observed significant increases in PEP, PEP/LVET ratio, IVRT, and TEI, whose maximal increases obtained throughout the study were 47%, 48%, 78%, and 56%, respectively. The LVET and HR did not change significantly, whereas the SI and CI decreased during anesthesia (29% and 26%, respectively). In conclusion, isoflurane produced direct effects on the Tei-index. The changes in systolic and diastolic parameters were supportive of this finding and were consistent with an overall impairment of left ventricular function during anesthesia.Univ Estadual Paulista, Fac Ciências Agr & Vet, Dept Clin & Cirugia Vet, BR-14884900 São Paulo, BrazilUniv Estadual Paulista, Fac Ciências Agr & Vet, Dept Clin & Cirugia Vet, BR-14884900 São Paulo, BrazilCanadian Vet Med AssocUniversidade Estadual Paulista (Unesp)Sousa, Marlos GoncalvesCarareto, RobertaDe-Nardi, Andrigo BarbozaBrito, Fablo L. C.Nunes, NewtonCamacho, Aparecido Antonio2014-05-20T15:24:44Z2014-05-20T15:24:44Z2007-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article277-282http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800963/Canadian Veterinary Journal-revue Veterinaire Canadienne. Ottawa: Canadian Vet Med Assoc, v. 48, n. 3, p. 277-282, 2007.0008-5286http://hdl.handle.net/11449/35292WOS:00024522610001000237838148897409642688764978907Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengCanadian Veterinary Journal-revue Veterinaire Canadienne0.5580,321info:eu-repo/semantics/openAccess2024-06-06T14:09:54Zoai:repositorio.unesp.br:11449/35292Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:20:15.512093Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
title Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
spellingShingle Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
Sousa, Marlos Goncalves
title_short Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
title_full Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
title_fullStr Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
title_full_unstemmed Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
title_sort Effects of isoflurane on Tei-index of myocardial performance in healthy dogs
author Sousa, Marlos Goncalves
author_facet Sousa, Marlos Goncalves
Carareto, Roberta
De-Nardi, Andrigo Barboza
Brito, Fablo L. C.
Nunes, Newton
Camacho, Aparecido Antonio
author_role author
author2 Carareto, Roberta
De-Nardi, Andrigo Barboza
Brito, Fablo L. C.
Nunes, Newton
Camacho, Aparecido Antonio
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Sousa, Marlos Goncalves
Carareto, Roberta
De-Nardi, Andrigo Barboza
Brito, Fablo L. C.
Nunes, Newton
Camacho, Aparecido Antonio
description Recently, the Tei-index, a noninvasive index that combines systolic and diastolic time intervals, has been proposed to assess global cardiac performance. However, the effects of isoflurane on the Tei-index have not been characterized. This study aimed at studying the effects of 1.0 minimal alveolar concentration isoflurane anesthesia on the pre-ejection period (PEP), left ventricular ejection time (LVET), PEP/LVET ratio, isovolumic relaxation time (IVRT), stroke index (SI), cardiac index (CI), heart rate (HR), and the Tei-index in healthy unpremedicated dogs. We observed significant increases in PEP, PEP/LVET ratio, IVRT, and TEI, whose maximal increases obtained throughout the study were 47%, 48%, 78%, and 56%, respectively. The LVET and HR did not change significantly, whereas the SI and CI decreased during anesthesia (29% and 26%, respectively). In conclusion, isoflurane produced direct effects on the Tei-index. The changes in systolic and diastolic parameters were supportive of this finding and were consistent with an overall impairment of left ventricular function during anesthesia.
publishDate 2007
dc.date.none.fl_str_mv 2007-03-01
2014-05-20T15:24:44Z
2014-05-20T15:24:44Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800963/
Canadian Veterinary Journal-revue Veterinaire Canadienne. Ottawa: Canadian Vet Med Assoc, v. 48, n. 3, p. 277-282, 2007.
0008-5286
http://hdl.handle.net/11449/35292
WOS:000245226100010
0023783814889740
9642688764978907
url http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1800963/
http://hdl.handle.net/11449/35292
identifier_str_mv Canadian Veterinary Journal-revue Veterinaire Canadienne. Ottawa: Canadian Vet Med Assoc, v. 48, n. 3, p. 277-282, 2007.
0008-5286
WOS:000245226100010
0023783814889740
9642688764978907
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Canadian Veterinary Journal-revue Veterinaire Canadienne
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0,321
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.format.none.fl_str_mv 277-282
dc.publisher.none.fl_str_mv Canadian Vet Med Assoc
publisher.none.fl_str_mv Canadian Vet Med Assoc
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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