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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorOkoshi, M. P.
dc.creatorFerreira Tucci, P. J.
dc.creatorOkoshi, K.
dc.creatorPadovani, C. R.
dc.creatorCicogna, A. C.
dc.date2014-05-27T11:18:01Z
dc.date2016-10-25T18:13:36Z
dc.date2014-05-27T11:18:01Z
dc.date2016-10-25T18:13:36Z
dc.date1995-11-01
dc.date.accessioned2017-04-06T00:46:23Z
dc.date.available2017-04-06T00:46:23Z
dc.identifierArquivos brasileiros de cardiologia, v. 65, n. 5, p. 417-421, 1995.
dc.identifier0066-782X
dc.identifierhttp://hdl.handle.net/11449/64647
dc.identifierhttp://acervodigital.unesp.br/handle/11449/64647
dc.identifier2-s2.0-0029402560.pdf
dc.identifier2-s2.0-0029402560
dc.identifierhttp://www.arquivosonline.com.br/pesquisartigos/Pdfs/1995/V65N5/65050006.pdf
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/886452
dc.descriptionPURPOSE: 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.
dc.languagepor
dc.relationArquivos Brasileiros de Cardiologia
dc.rightsinfo:eu-repo/semantics/openAccess
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.
dc.typeOtro


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