Long-axis fractional shortening and mitral annulus motion in dogs

Detalhes bibliográficos
Autor(a) principal: Sousa, Marlos Gonçalves
Data de Publicação: 2016
Outros Autores: Gava, Fabio Nelson, Silva Filho, Jorge Cardoso da, Silva, Sheila Nogueira Saraiva da, Camacho, Rafael Rodrigues, Carareto, Roberta, Wolf, Marcela, Camacho, Aparecido Antonio
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22752
Resumo: Ventricular systolic dynamics involves the contraction of transverse and longitudinal myocardial fibers. Unfortunately, only the activity of the transverse myocardial fibers is foreseen by the standard systolic echocardiographic parameters. Although strain and strain rate have been used to assess the radial, circumferential and longitudinal planes of cardiac contraction, such analysis requires advanced equipment which is not always available in veterinary medicine. On the contrary, some unusual parameters may be recorded via standard methodology, allowing for the specific evaluation of left ventricular longitudinal contractility. In this study, the longitudinal contractile activity was evaluated using the long-axis fractional shortening and the mitral annulus motion, which were compared with several standard echocardiographic parameters in 14 beagles, including seven with asymptomatic mitral valve disease. The long-axis fractional shortening was positively correlated with both the mitral annulus motion and the end-diastolic left-ventricular diameter. Also, a significant correlation was found to exist between the mitral annulus motion and the left-ventricular end-diastolic diameter, which is likely supportive of its preload dependency. Even though no difference was documented in either mitral annulus motion or long-axis fractional shortening between healthy dogs and dogs with mitral valve disease, the latter only included animals with minimal cardiac remodeling, with no overt compromise of systolic function. Since it is possible to obtain these two parameters with any echocardiographic equipment, their inclusion in the routine exam would probably add information regarding the activity of the longitudinal myocardial fibers, whose functional deterioration supposedly occurs prior to the impairment of transverse fibers.
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spelling Long-axis fractional shortening and mitral annulus motion in dogsFração de encurtamento longitudinal e movimento anular mitralem cãesLeft ventricleSystolic functionEchocardiogramLongitudinal contractilityEndocardiosis.Função sistólicaVentrículo esquerdoEcocardiogramaContratilidade longitudinalEndocardiose.Ventricular systolic dynamics involves the contraction of transverse and longitudinal myocardial fibers. Unfortunately, only the activity of the transverse myocardial fibers is foreseen by the standard systolic echocardiographic parameters. Although strain and strain rate have been used to assess the radial, circumferential and longitudinal planes of cardiac contraction, such analysis requires advanced equipment which is not always available in veterinary medicine. On the contrary, some unusual parameters may be recorded via standard methodology, allowing for the specific evaluation of left ventricular longitudinal contractility. In this study, the longitudinal contractile activity was evaluated using the long-axis fractional shortening and the mitral annulus motion, which were compared with several standard echocardiographic parameters in 14 beagles, including seven with asymptomatic mitral valve disease. The long-axis fractional shortening was positively correlated with both the mitral annulus motion and the end-diastolic left-ventricular diameter. Also, a significant correlation was found to exist between the mitral annulus motion and the left-ventricular end-diastolic diameter, which is likely supportive of its preload dependency. Even though no difference was documented in either mitral annulus motion or long-axis fractional shortening between healthy dogs and dogs with mitral valve disease, the latter only included animals with minimal cardiac remodeling, with no overt compromise of systolic function. Since it is possible to obtain these two parameters with any echocardiographic equipment, their inclusion in the routine exam would probably add information regarding the activity of the longitudinal myocardial fibers, whose functional deterioration supposedly occurs prior to the impairment of transverse fibers.A dinâmica ventricular sistólica envolve a contração de fibras miocárdicas transversais e longitudinais e, infelizmente, os parâmetros ecocardiográficos de função sistólica utilizados rotineiramente estão focados apenas na atividade das fibras transversais. Embora a deformação e a taxa de deformação miocárdicas venham sendo utilizadas para avaliar a contração cardíaca nos planos radial, circunferencial e longitudinal, tal análise requer equipamentos avançados que nem sempre estão disponíveis na Medicina Veterinária. Por outro lado, alguns parâmetros não usuais podem ser quantificados valendo-se de metodologia convencional, permitindo avaliar especificamente a função contrátil longitudinal do ventrículo esquerdo. Neste estudo, a atividade contrátil longitudinal foi avaliada por meio da fração de encurtamento longitudinal e do movimento anular mitral, os quais foram comparados com diversas variáveis ecocardiográficas convencionais em 14 Beagles, sendo sete deles portadores de doença valvar mitral assintomática. A fração de encurtamento longitudinal apresentou correlação positiva com o movimento anular mitral e com o diâmetro do ventrículo esquerdo em diástole. Também houve correlação significativa entre o movimento anular mitral e o diâmetro ventricular esquerdo em diástole, o que pode sugerir sua dependência da pré-carga. Embora não tenham sido observadas diferenças no movimento anular mitral e na fração de encurtamento longitudinal entre cães saudáveis e valvulopatas, há que se enfatizar que os animais com doença mitral apresentavam apenas mínimo remodelamento cardíaco, sem quaisquer indícios de comprometimento da função sistólica. Destarte, dada a possibilidade de mensurar ambos os parâmetros em qualquer equipamento de ecocardiografia, sua incorporação ao exame ecocardiográfico de rotina provavelmente agregaria informações sobre a atividade das fibras miocárdicas longitudinais, cuja deterioração funcional supostamente ocorre de modo precoce comparativamente às fibras transversais.UEL2016-10-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionCross-sectional studyPesquisa transversalapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2275210.5433/1679-0359.2016v37n5p3115Semina: Ciências Agrárias; Vol. 37 No. 5 (2016); 3115-3124Semina: Ciências Agrárias; v. 37 n. 5 (2016); 3115-31241679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22752/19764http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessSousa, Marlos GonçalvesGava, Fabio NelsonSilva Filho, Jorge Cardoso daSilva, Sheila Nogueira Saraiva daCamacho, Rafael RodriguesCarareto, RobertaWolf, MarcelaCamacho, Aparecido Antonio2022-11-30T14:08:40Zoai:ojs.pkp.sfu.ca:article/22752Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-11-30T14:08:40Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Long-axis fractional shortening and mitral annulus motion in dogs
Fração de encurtamento longitudinal e movimento anular mitralem cães
title Long-axis fractional shortening and mitral annulus motion in dogs
spellingShingle Long-axis fractional shortening and mitral annulus motion in dogs
Sousa, Marlos Gonçalves
Left ventricle
Systolic function
Echocardiogram
Longitudinal contractility
Endocardiosis.
Função sistólica
Ventrículo esquerdo
Ecocardiograma
Contratilidade longitudinal
Endocardiose.
title_short Long-axis fractional shortening and mitral annulus motion in dogs
title_full Long-axis fractional shortening and mitral annulus motion in dogs
title_fullStr Long-axis fractional shortening and mitral annulus motion in dogs
title_full_unstemmed Long-axis fractional shortening and mitral annulus motion in dogs
title_sort Long-axis fractional shortening and mitral annulus motion in dogs
author Sousa, Marlos Gonçalves
author_facet Sousa, Marlos Gonçalves
Gava, Fabio Nelson
Silva Filho, Jorge Cardoso da
Silva, Sheila Nogueira Saraiva da
Camacho, Rafael Rodrigues
Carareto, Roberta
Wolf, Marcela
Camacho, Aparecido Antonio
author_role author
author2 Gava, Fabio Nelson
Silva Filho, Jorge Cardoso da
Silva, Sheila Nogueira Saraiva da
Camacho, Rafael Rodrigues
Carareto, Roberta
Wolf, Marcela
Camacho, Aparecido Antonio
author2_role author
author
author
author
author
author
author
dc.contributor.author.fl_str_mv Sousa, Marlos Gonçalves
Gava, Fabio Nelson
Silva Filho, Jorge Cardoso da
Silva, Sheila Nogueira Saraiva da
Camacho, Rafael Rodrigues
Carareto, Roberta
Wolf, Marcela
Camacho, Aparecido Antonio
dc.subject.por.fl_str_mv Left ventricle
Systolic function
Echocardiogram
Longitudinal contractility
Endocardiosis.
Função sistólica
Ventrículo esquerdo
Ecocardiograma
Contratilidade longitudinal
Endocardiose.
topic Left ventricle
Systolic function
Echocardiogram
Longitudinal contractility
Endocardiosis.
Função sistólica
Ventrículo esquerdo
Ecocardiograma
Contratilidade longitudinal
Endocardiose.
description Ventricular systolic dynamics involves the contraction of transverse and longitudinal myocardial fibers. Unfortunately, only the activity of the transverse myocardial fibers is foreseen by the standard systolic echocardiographic parameters. Although strain and strain rate have been used to assess the radial, circumferential and longitudinal planes of cardiac contraction, such analysis requires advanced equipment which is not always available in veterinary medicine. On the contrary, some unusual parameters may be recorded via standard methodology, allowing for the specific evaluation of left ventricular longitudinal contractility. In this study, the longitudinal contractile activity was evaluated using the long-axis fractional shortening and the mitral annulus motion, which were compared with several standard echocardiographic parameters in 14 beagles, including seven with asymptomatic mitral valve disease. The long-axis fractional shortening was positively correlated with both the mitral annulus motion and the end-diastolic left-ventricular diameter. Also, a significant correlation was found to exist between the mitral annulus motion and the left-ventricular end-diastolic diameter, which is likely supportive of its preload dependency. Even though no difference was documented in either mitral annulus motion or long-axis fractional shortening between healthy dogs and dogs with mitral valve disease, the latter only included animals with minimal cardiac remodeling, with no overt compromise of systolic function. Since it is possible to obtain these two parameters with any echocardiographic equipment, their inclusion in the routine exam would probably add information regarding the activity of the longitudinal myocardial fibers, whose functional deterioration supposedly occurs prior to the impairment of transverse fibers.
publishDate 2016
dc.date.none.fl_str_mv 2016-10-26
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Cross-sectional study
Pesquisa transversal
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22752
10.5433/1679-0359.2016v37n5p3115
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22752
identifier_str_mv 10.5433/1679-0359.2016v37n5p3115
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/22752/19764
dc.rights.driver.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 37 No. 5 (2016); 3115-3124
Semina: Ciências Agrárias; v. 37 n. 5 (2016); 3115-3124
1679-0359
1676-546X
reponame:Semina. Ciências Agrárias (Online)
instname:Universidade Estadual de Londrina (UEL)
instacron:UEL
instname_str Universidade Estadual de Londrina (UEL)
instacron_str UEL
institution UEL
reponame_str Semina. Ciências Agrárias (Online)
collection Semina. Ciências Agrárias (Online)
repository.name.fl_str_mv Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)
repository.mail.fl_str_mv semina.agrarias@uel.br
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