A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo.
Autor(a) principal: | |
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Data de Publicação: | 1993 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.arquivosonline.com.br/pesquisartigos/Pdfs/1993/V61N6/61060003.pdf http://hdl.handle.net/11449/64423 |
Resumo: | PURPOSE--To analyze the influence of the myocardial engorgement due to coronary perfusion on the left ventricular diastolic pressure/volume (P/V) relations. METHODS--The study was undertaken in the isovolumic blood-perfused dog heart preparation (n = 7). The P/V relations were determined promoting ventricular volumes variations by steps of 2ml, in two conditions: during coronary perfusion pressure of 100mmHg and after occlusion of the perfusion line. RESULTS--It was verified that the P/V relations obtained without myocardial perfusion shifted to the down right in respect to the perfused heart. A exponential fitting of the P/V relations allows to conclude that there was no difference among the slopes of the curves obtained with and without perfusion. CONCLUSION--Our results indicated that coronary perfusion restrain the capacity of the left ventricle to receive blood, but there is no influence on the passive elastic stiffness of the chamber. This effect was taught to be consequence of the myocardial erectile property. |
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A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo.Influence of cardiac perfusion on relations of pressure/volume of the left ventricleanimalcomparative studydogheart left ventricle functionheart stroke volumeheart ventricle pressureperfusionphysiologytimeAnimalComparative StudyDogsEnglish AbstractPerfusionStroke VolumeTime FactorsVentricular Function, LeftVentricular PressurePURPOSE--To analyze the influence of the myocardial engorgement due to coronary perfusion on the left ventricular diastolic pressure/volume (P/V) relations. METHODS--The study was undertaken in the isovolumic blood-perfused dog heart preparation (n = 7). The P/V relations were determined promoting ventricular volumes variations by steps of 2ml, in two conditions: during coronary perfusion pressure of 100mmHg and after occlusion of the perfusion line. RESULTS--It was verified that the P/V relations obtained without myocardial perfusion shifted to the down right in respect to the perfused heart. A exponential fitting of the P/V relations allows to conclude that there was no difference among the slopes of the curves obtained with and without perfusion. CONCLUSION--Our results indicated that coronary perfusion restrain the capacity of the left ventricle to receive blood, but there is no influence on the passive elastic stiffness of the chamber. This effect was taught to be consequence of the myocardial erectile property.Universidade Estadual Paulista (Unesp)Tucci, P. J.Nogueira, R. J.Tornero, M. T.2014-05-27T11:17:55Z2014-05-27T11:17:55Z1993-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article331-335application/pdfhttp://www.arquivosonline.com.br/pesquisartigos/Pdfs/1993/V61N6/61060003.pdfArquivos Brasileiros de Cardiologia, v. 61, n. 6, p. 331-335, 1993.0066-782Xhttp://hdl.handle.net/11449/644232-s2.0-00277919332-s2.0-0027791933.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporArquivos Brasileiros de Cardiologia1.318info:eu-repo/semantics/openAccess2023-10-16T06:09:52Zoai:repositorio.unesp.br:11449/64423Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T15:08:19.928554Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. Influence of cardiac perfusion on relations of pressure/volume of the left ventricle |
title |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
spellingShingle |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. Tucci, P. J. animal comparative study dog heart left ventricle function heart stroke volume heart ventricle pressure perfusion physiology time Animal Comparative Study Dogs English Abstract Perfusion Stroke Volume Time Factors Ventricular Function, Left Ventricular Pressure |
title_short |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
title_full |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
title_fullStr |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
title_full_unstemmed |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
title_sort |
A influência da perfusão cardíaca nas relações pressão/volume do ventrículo esquerdo. |
author |
Tucci, P. J. |
author_facet |
Tucci, P. J. Nogueira, R. J. Tornero, M. T. |
author_role |
author |
author2 |
Nogueira, R. J. Tornero, M. T. |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Tucci, P. J. Nogueira, R. J. Tornero, M. T. |
dc.subject.por.fl_str_mv |
animal comparative study dog heart left ventricle function heart stroke volume heart ventricle pressure perfusion physiology time Animal Comparative Study Dogs English Abstract Perfusion Stroke Volume Time Factors Ventricular Function, Left Ventricular Pressure |
topic |
animal comparative study dog heart left ventricle function heart stroke volume heart ventricle pressure perfusion physiology time Animal Comparative Study Dogs English Abstract Perfusion Stroke Volume Time Factors Ventricular Function, Left Ventricular Pressure |
description |
PURPOSE--To analyze the influence of the myocardial engorgement due to coronary perfusion on the left ventricular diastolic pressure/volume (P/V) relations. METHODS--The study was undertaken in the isovolumic blood-perfused dog heart preparation (n = 7). The P/V relations were determined promoting ventricular volumes variations by steps of 2ml, in two conditions: during coronary perfusion pressure of 100mmHg and after occlusion of the perfusion line. RESULTS--It was verified that the P/V relations obtained without myocardial perfusion shifted to the down right in respect to the perfused heart. A exponential fitting of the P/V relations allows to conclude that there was no difference among the slopes of the curves obtained with and without perfusion. CONCLUSION--Our results indicated that coronary perfusion restrain the capacity of the left ventricle to receive blood, but there is no influence on the passive elastic stiffness of the chamber. This effect was taught to be consequence of the myocardial erectile property. |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993-12-01 2014-05-27T11:17:55Z 2014-05-27T11:17:55Z |
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.arquivosonline.com.br/pesquisartigos/Pdfs/1993/V61N6/61060003.pdf Arquivos Brasileiros de Cardiologia, v. 61, n. 6, p. 331-335, 1993. 0066-782X http://hdl.handle.net/11449/64423 2-s2.0-0027791933 2-s2.0-0027791933.pdf |
url |
http://www.arquivosonline.com.br/pesquisartigos/Pdfs/1993/V61N6/61060003.pdf http://hdl.handle.net/11449/64423 |
identifier_str_mv |
Arquivos Brasileiros de Cardiologia, v. 61, n. 6, p. 331-335, 1993. 0066-782X 2-s2.0-0027791933 2-s2.0-0027791933.pdf |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
Arquivos Brasileiros de Cardiologia 1.318 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
331-335 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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) |
repository.mail.fl_str_mv |
|
_version_ |
1808128467066159104 |