Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral

Detalhes bibliográficos
Autor(a) principal: Sousa, Paulo Roberto de
Data de Publicação: 2019
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Repositório Institucional da UFG
dARK ID: ark:/38995/0013000005w9m
Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/10686
Resumo: Myxomatous mitral valve disease (MMVD), or mitral valve endocardiosis, is the most prevalent acquired heart disease in dogs, being the main cause of heart failure in small dogs. The echocardiographic examination, which allows cardiac morphological and functional evaluation, is considered the “gold standard” test for diagnosing and staging MMVD in dogs. Information obtained by echocardiography on ventricular function also determines the prognosis in dogs with MMVD, since systolic dysfunction is a risk factor in these patients and contributes to the development of heart failure. However, the assessment of ventricular systolic function using conventional echocardiographic indexes is limited, since it is directly influenced by preload and afterload factors. The evaluation of cardiac mechanics by strain (ST) and strain rate (STR), using two-dimensional speckle tracking (2D-STE), allows, in humans, an earlier diagnosis of ventricular dysfunction. In addition, the mitral ring tissue displacement (TMAD) is an index of longitudinal systolic function that has a good correlation with conventional echocardiographic indices and low intra and interobserver variability. Thus, the objective of this study was to verify whether the myocardial deformity indexes (ST and STR) and the TMAD are more accurate and precocious than the conventional echocardiographic indexes in the assessment of left ventricular systolic function in dogs with MMVD, measuring the variables in the day of diagnosis (T0) and after 30 days (T30). For this purpose, 29 dogs were evaluated, categorized according to the ACVIM consensus, eight of which were in stage B1, 12 in stage B2 and nine in stage C. Considering the conventional variables used in this study, the presence of systolic dysfunction was not observed in dogs with MMVD, however changes after the start of pharmacological treatment were observed in the variables FET% and MAM. From the 2D-STE evaluation, similar to the conventional evaluation, systolic dysfunction cannot be determined in dogs with MMVD. However, the longitudinal ST variable indexed by weight showed a significant increase between the assessment times in group C, being still significantly higher in C than in B2, at administration, and higher in C than in the other groups after treatment. For the variable longitudinal STR it decreased in T30 in B1 and increased in C. When comparing the groups, in T30, group C showed higher values than in B1 and B2. Still, the variables longitudinal ST and TMAD showed a significant negative correlation when indexed to weight. In conclusion, the assessment of myocardial deformity using 2D-STE assessment did not demonstrate superiority compared to conventional indices for the diagnosis of systolic dysfunction in dogs with MMVD in its different stages.
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spelling Carvalho, Rosângela de Oliveira Alveshttp://lattes.cnpq.br/5593911382353878Damasceno, Adilson Donizetihttp://lattes.cnpq.br/3900110295277130Torres, Bruno Benetti Juntahttp://lattes.cnpq.br/7060242425070126Carvalho, Rosângela de Oliveira AlvesSousa, Marlos GonçalvesDamasceno, Adilson Donizetihttp://lattes.cnpq.br/6018745302979838Sousa, Paulo Roberto de2020-09-14T11:49:42Z2020-09-14T11:49:42Z2019-12-27SOUSA, P. R. Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral. 2019. 57 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2019.http://repositorio.bc.ufg.br/tede/handle/tede/10686ark:/38995/0013000005w9mMyxomatous mitral valve disease (MMVD), or mitral valve endocardiosis, is the most prevalent acquired heart disease in dogs, being the main cause of heart failure in small dogs. The echocardiographic examination, which allows cardiac morphological and functional evaluation, is considered the “gold standard” test for diagnosing and staging MMVD in dogs. Information obtained by echocardiography on ventricular function also determines the prognosis in dogs with MMVD, since systolic dysfunction is a risk factor in these patients and contributes to the development of heart failure. However, the assessment of ventricular systolic function using conventional echocardiographic indexes is limited, since it is directly influenced by preload and afterload factors. The evaluation of cardiac mechanics by strain (ST) and strain rate (STR), using two-dimensional speckle tracking (2D-STE), allows, in humans, an earlier diagnosis of ventricular dysfunction. In addition, the mitral ring tissue displacement (TMAD) is an index of longitudinal systolic function that has a good correlation with conventional echocardiographic indices and low intra and interobserver variability. Thus, the objective of this study was to verify whether the myocardial deformity indexes (ST and STR) and the TMAD are more accurate and precocious than the conventional echocardiographic indexes in the assessment of left ventricular systolic function in dogs with MMVD, measuring the variables in the day of diagnosis (T0) and after 30 days (T30). For this purpose, 29 dogs were evaluated, categorized according to the ACVIM consensus, eight of which were in stage B1, 12 in stage B2 and nine in stage C. Considering the conventional variables used in this study, the presence of systolic dysfunction was not observed in dogs with MMVD, however changes after the start of pharmacological treatment were observed in the variables FET% and MAM. From the 2D-STE evaluation, similar to the conventional evaluation, systolic dysfunction cannot be determined in dogs with MMVD. However, the longitudinal ST variable indexed by weight showed a significant increase between the assessment times in group C, being still significantly higher in C than in B2, at administration, and higher in C than in the other groups after treatment. For the variable longitudinal STR it decreased in T30 in B1 and increased in C. When comparing the groups, in T30, group C showed higher values than in B1 and B2. Still, the variables longitudinal ST and TMAD showed a significant negative correlation when indexed to weight. In conclusion, the assessment of myocardial deformity using 2D-STE assessment did not demonstrate superiority compared to conventional indices for the diagnosis of systolic dysfunction in dogs with MMVD in its different stages.A doença mixomatosa valvar mitral (DMVM), ou endocardiose de valva mitral, é a cardiopatia adquirida de maior prevalência em cães, sendo a principal causa de insuficiência cardíaca em cães de porte pequeno. O exame ecocardiográfico, que permite avaliação morfológica e funcional cardíaca, é considerado o teste “padrão ouro” para realizar o diagnóstico e estadiamento da DMVM em cães. Informações obtidas pela ecocardiografia sobre a função ventricular também determinam o prognóstico em cães com DMVM, uma vez que a disfunção sistólica é um fator de risco nesses pacientes e contribui para o desenvolvimento de insuficiência cardíaca. Entretanto, a avaliação da função sistólica ventricular por meio de índices ecocardiográficos convencionais é limitada, uma vez que sofre influência direta dos fatores de pré-carga e pós-carga. A avaliação da mecânica cardíaca por strain (ST) e strain rate (STR), por meio do speckle tracking bidimensional (2D-STE), permite, em seres humanos, o diagnóstico mais precoce da disfunção ventricular. Além destes, o deslocamento tecidual do anel mitral (TMAD) é um índice de função sistólica longitudinal que apresenta boa correlação com os índices ecocardiográficos convencionais e baixa variabilidade intra e interobservador. Desta forma, o objetivo deste estudo foi verificar se os índices de deformidade miocárdica (ST e STR) e o TMAD são mais precisos e precoces que os índices ecocardiográficos convencionais na avaliação da função sistólica do ventrículo esquerdo em cães com DMVM, mensurando as variáveis no dia do diagnóstico (T0) e após 30 dias (T30). Para tanto, foram avaliados 29 cães, categorizados de acordo com o consenso do ACVIM, sendo oito desses em estágio B1, 12 em estágio B2 e nove em estágio C. Considerando as variáveis convencionais, utilizadas nesse estudo, não foi observada a presença de disfunção sistólica em cães com DMVM, entretanto foram observadas mudanças após o início do tratamento farmacológico nas variáveis FET% e MAM. A partir da avaliação por 2D-STE, de forma semelhante à avaliação convencional, não se pode determinar disfunção sistólica nos cães com DMVM. Contudo, a variável ST longitudinal indexado pelo peso apresentou aumento significativo entre os tempos de avaliação no grupo C, sendo ainda significativamente maior em C do que em B2, na adminissão, e maior em C que nos demais grupos após o tratamento. Para a váriavél STR longitudinal diminuiu em T30 no B1 e aumentou em C. Quando comparados os grupos, em T30, o grupo C apresentou valores maiores que em B1 e B2. Ainda, as variáveis ST longitudinal e TMAD apresentaram correlação negativa significativa quando indexadas ao peso. Concluindo, a avaliação da deformidade miocárdica por meio da avaliação 2D-STE não demonstrou superioridade frente aos índices convencionais para o diagnóstico da disfunção sistólica em cães com DMVM em seus diferentes estágios.Submitted by Liliane Ferreira (ljuvencia30@gmail.com) on 2020-09-14T11:40:40Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação - Paulo Roberto de Sousa - 2019.pdf: 2869912 bytes, checksum: 0e349ead3f809a5fd0b7a45c3d9a6a07 (MD5)Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2020-09-14T11:49:42Z (GMT) No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação - Paulo Roberto de Sousa - 2019.pdf: 2869912 bytes, checksum: 0e349ead3f809a5fd0b7a45c3d9a6a07 (MD5)Made available in DSpace on 2020-09-14T11:49:42Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertação - Paulo Roberto de Sousa - 2019.pdf: 2869912 bytes, checksum: 0e349ead3f809a5fd0b7a45c3d9a6a07 (MD5) Previous issue date: 2019-12-27Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPqporUniversidade Federal de GoiásPrograma de Pós-graduação em Ciência Animal (EVZ)UFGBrasilEscola de Veterinária e Zootecnia - EVZ (RG)Attribution-NonCommercial-NoDerivs 3.0 Brazilhttp://creativecommons.org/licenses/by-nc-nd/3.0/br/info:eu-repo/semantics/openAccessDeslocamento tecidual do anel valvar mitralEndocardiose mitralEcocardiografiaTissue motion anular displacementMitral endocardiosisEchocardiographyCIENCIAS AGRARIAS::MEDICINA VETERINARIAFunção sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitralLeft ventricular systolic function in dogs with myxomatous mitral valve diseaseinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis1850050050050061540reponame:Repositório Institucional da UFGinstname:Universidade Federal de Goiás (UFG)instacron:UFGLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.bc.ufg.br/tede/bitstreams/516a9731-bfc3-452a-a9b8-e92829e57c35/download8a4605be74aa9ea9d79846c1fba20a33MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8811http://repositorio.bc.ufg.br/tede/bitstreams/0c4b6286-4145-4f65-8e3e-9ab03c1ad87d/downloade39d27027a6cc9cb039ad269a5db8e34MD52ORIGINALDissertação - Paulo Roberto de Sousa - 2019.pdfDissertação - Paulo Roberto de Sousa - 2019.pdfapplication/pdf2869912http://repositorio.bc.ufg.br/tede/bitstreams/d8c83620-51d3-4355-9576-8295fd4e7454/download0e349ead3f809a5fd0b7a45c3d9a6a07MD53tede/106862020-09-14 08:49:42.95http://creativecommons.org/licenses/by-nc-nd/3.0/br/Attribution-NonCommercial-NoDerivs 3.0 Brazilopen.accessoai:repositorio.bc.ufg.br:tede/10686http://repositorio.bc.ufg.br/tedeRepositório InstitucionalPUBhttp://repositorio.bc.ufg.br/oai/requesttasesdissertacoes.bc@ufg.bropendoar:2020-09-14T11:49:42Repositório Institucional da UFG - Universidade Federal de Goiás (UFG)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
dc.title.pt_BR.fl_str_mv Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
dc.title.alternative.eng.fl_str_mv Left ventricular systolic function in dogs with myxomatous mitral valve disease
title Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
spellingShingle Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
Sousa, Paulo Roberto de
Deslocamento tecidual do anel valvar mitral
Endocardiose mitral
Ecocardiografia
Tissue motion anular displacement
Mitral endocardiosis
Echocardiography
CIENCIAS AGRARIAS::MEDICINA VETERINARIA
title_short Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
title_full Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
title_fullStr Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
title_full_unstemmed Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
title_sort Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral
author Sousa, Paulo Roberto de
author_facet Sousa, Paulo Roberto de
author_role author
dc.contributor.advisor1.fl_str_mv Carvalho, Rosângela de Oliveira Alves
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/5593911382353878
dc.contributor.advisor-co1.fl_str_mv Damasceno, Adilson Donizeti
dc.contributor.advisor-co1Lattes.fl_str_mv http://lattes.cnpq.br/3900110295277130
dc.contributor.advisor-co2.fl_str_mv Torres, Bruno Benetti Junta
dc.contributor.advisor-co2Lattes.fl_str_mv http://lattes.cnpq.br/7060242425070126
dc.contributor.referee1.fl_str_mv Carvalho, Rosângela de Oliveira Alves
dc.contributor.referee2.fl_str_mv Sousa, Marlos Gonçalves
dc.contributor.referee3.fl_str_mv Damasceno, Adilson Donizeti
dc.contributor.authorLattes.fl_str_mv http://lattes.cnpq.br/6018745302979838
dc.contributor.author.fl_str_mv Sousa, Paulo Roberto de
contributor_str_mv Carvalho, Rosângela de Oliveira Alves
Damasceno, Adilson Donizeti
Torres, Bruno Benetti Junta
Carvalho, Rosângela de Oliveira Alves
Sousa, Marlos Gonçalves
Damasceno, Adilson Donizeti
dc.subject.por.fl_str_mv Deslocamento tecidual do anel valvar mitral
Endocardiose mitral
Ecocardiografia
topic Deslocamento tecidual do anel valvar mitral
Endocardiose mitral
Ecocardiografia
Tissue motion anular displacement
Mitral endocardiosis
Echocardiography
CIENCIAS AGRARIAS::MEDICINA VETERINARIA
dc.subject.eng.fl_str_mv Tissue motion anular displacement
Mitral endocardiosis
Echocardiography
dc.subject.cnpq.fl_str_mv CIENCIAS AGRARIAS::MEDICINA VETERINARIA
description Myxomatous mitral valve disease (MMVD), or mitral valve endocardiosis, is the most prevalent acquired heart disease in dogs, being the main cause of heart failure in small dogs. The echocardiographic examination, which allows cardiac morphological and functional evaluation, is considered the “gold standard” test for diagnosing and staging MMVD in dogs. Information obtained by echocardiography on ventricular function also determines the prognosis in dogs with MMVD, since systolic dysfunction is a risk factor in these patients and contributes to the development of heart failure. However, the assessment of ventricular systolic function using conventional echocardiographic indexes is limited, since it is directly influenced by preload and afterload factors. The evaluation of cardiac mechanics by strain (ST) and strain rate (STR), using two-dimensional speckle tracking (2D-STE), allows, in humans, an earlier diagnosis of ventricular dysfunction. In addition, the mitral ring tissue displacement (TMAD) is an index of longitudinal systolic function that has a good correlation with conventional echocardiographic indices and low intra and interobserver variability. Thus, the objective of this study was to verify whether the myocardial deformity indexes (ST and STR) and the TMAD are more accurate and precocious than the conventional echocardiographic indexes in the assessment of left ventricular systolic function in dogs with MMVD, measuring the variables in the day of diagnosis (T0) and after 30 days (T30). For this purpose, 29 dogs were evaluated, categorized according to the ACVIM consensus, eight of which were in stage B1, 12 in stage B2 and nine in stage C. Considering the conventional variables used in this study, the presence of systolic dysfunction was not observed in dogs with MMVD, however changes after the start of pharmacological treatment were observed in the variables FET% and MAM. From the 2D-STE evaluation, similar to the conventional evaluation, systolic dysfunction cannot be determined in dogs with MMVD. However, the longitudinal ST variable indexed by weight showed a significant increase between the assessment times in group C, being still significantly higher in C than in B2, at administration, and higher in C than in the other groups after treatment. For the variable longitudinal STR it decreased in T30 in B1 and increased in C. When comparing the groups, in T30, group C showed higher values than in B1 and B2. Still, the variables longitudinal ST and TMAD showed a significant negative correlation when indexed to weight. In conclusion, the assessment of myocardial deformity using 2D-STE assessment did not demonstrate superiority compared to conventional indices for the diagnosis of systolic dysfunction in dogs with MMVD in its different stages.
publishDate 2019
dc.date.issued.fl_str_mv 2019-12-27
dc.date.accessioned.fl_str_mv 2020-09-14T11:49:42Z
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identifier_str_mv SOUSA, P. R. Função sistólica do ventrículo esquerdo em cães com doença mixomatosa valvar mitral. 2019. 57 f. Dissertação (Mestrado em Ciência Animal) - Universidade Federal de Goiás, Goiânia, 2019.
ark:/38995/0013000005w9m
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dc.publisher.country.fl_str_mv Brasil
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publisher.none.fl_str_mv Universidade Federal de Goiás
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