Influência da pós-carga sobre a taxa de variação da tensão desenvolvida (dT/dt). Estudo em músculo cardíaco isolado.

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dc.contributor.authorOkoshi, M. P.
dc.contributor.authorFerreira Tucci, P. J.
dc.contributor.authorOkoshi, K.
dc.contributor.authorPadovani, C. R.
dc.contributor.authorCicogna, A. C.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:18:01Z
dc.date.available2014-05-27T11:18:01Z
dc.date.issued1995-11-01
dc.description.abstractPURPOSE: To evaluate the effects of afterload on peak rate of tension rise (dT/dt) in the isolated muscle. METHODS: Left ventricular papillary muscles from Wistar rats were studied in isometric and isotonic afterloaded contractions. Muscles were analised in Krebs-Henseleit solution with calcium concentration of 2.52mM at 28 degrees C. The resting muscle length (preload) was maintained constant. The peak isometric developed tension (DT) and dT/dt were measured during increases of afterload (25, 50, 75 and 100% from DT). RESULTS: A rise in afterload corresponding to 50, 75 and 100% of DT, did not cause an increase in dT/dt values (p > 0.05). The dT/dt value decreased (p < 0.05) when afterload was changed from 75% to 25% of DT. CONCLUSION: The data suggest that an increase in the afterload from 50% of the DT did not promote changes in the dT/dt.en
dc.format.extent417-421
dc.identifierhttp://www.arquivosonline.com.br/pesquisartigos/Pdfs/1995/V65N5/65050006.pdf
dc.identifier.citationArquivos brasileiros de cardiologia, v. 65, n. 5, p. 417-421, 1995.
dc.identifier.file2-s2.0-0029402560.pdf
dc.identifier.issn0066-782X
dc.identifier.lattes8727897080522289
dc.identifier.scopus2-s2.0-0029402560
dc.identifier.urihttp://hdl.handle.net/11449/64647
dc.language.isopor
dc.relation.ispartofArquivos Brasileiros de Cardiologia
dc.relation.ispartofjcr1.318
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectanimal
dc.subjectheart contraction
dc.subjectheart output
dc.subjectheart papillary muscle
dc.subjectmale
dc.subjectmuscle isometric contraction
dc.subjectphysiology
dc.subjectrat
dc.subjectWistar rat
dc.subjectAnimals
dc.subjectCardiac Output
dc.subjectIsometric Contraction
dc.subjectMale
dc.subjectMyocardial Contraction
dc.subjectPapillary Muscles
dc.subjectRats
dc.subjectRats, Wistar
dc.titleInfluência da pós-carga sobre a taxa de variação da tensão desenvolvida (dT/dt). Estudo em músculo cardíaco isolado.pt
dc.title.alternativeInfluence of afterload on the rate of variation of developed pressure (dT/dt). Study in isolated cardiac muscleen
dc.typeArtigo
dcterms.licensehttp://www.scielo.br/revistas/abc/paboutj.htm#03
unesp.author.lattes8727897080522289[4]
unesp.author.lattes9418970103564137[5]
unesp.author.orcid0000-0002-4402-6523[5]
unesp.author.orcid0000-0002-7719-9682[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt

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