Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Medical and Biological Research |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900005 |
Resumo: | To determine the possible relationship between left ventricular dilatation and heart rate changes provoked by the Valsalva maneuver (Valsalva ratio), we studied 9 patients with isolated chronic aortic insufficiency. Left ventricular systolic function was assessed by two-dimensional echocardiography and cardiac catheterization. All patients were asymptomatic (functional class I of the New York Heart Association). The left ventricular internal diameters and volumes were significantly increased in all patients. The asymptomatic patients had either normal or slightly depressed ejection fraction (EF>0.40). The Valsalva ratio of these asymptomatic patients showed no significant correlation with the left ventricular volumes or with the left ventricular ejection fraction. In other words, parasympathetic heart rate control, as expressed by the Valsalva ratio, was normal in the asymptomatic patients with left ventricular dilatation and preserved left ventricular ejection fraction. Therefore, left ventricular dilatation may not be the major mechanism responsible for the abnormal parasympathetic heart rate control of patients with acquired heart disease |
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Brazilian Journal of Medical and Biological Research |
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Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiencyValsalva maneuverparasympathetic nervous systemleft ventricular systolic functionchronic aortic insufficiencyejection fractionTo determine the possible relationship between left ventricular dilatation and heart rate changes provoked by the Valsalva maneuver (Valsalva ratio), we studied 9 patients with isolated chronic aortic insufficiency. Left ventricular systolic function was assessed by two-dimensional echocardiography and cardiac catheterization. All patients were asymptomatic (functional class I of the New York Heart Association). The left ventricular internal diameters and volumes were significantly increased in all patients. The asymptomatic patients had either normal or slightly depressed ejection fraction (EF>0.40). The Valsalva ratio of these asymptomatic patients showed no significant correlation with the left ventricular volumes or with the left ventricular ejection fraction. In other words, parasympathetic heart rate control, as expressed by the Valsalva ratio, was normal in the asymptomatic patients with left ventricular dilatation and preserved left ventricular ejection fraction. Therefore, left ventricular dilatation may not be the major mechanism responsible for the abnormal parasympathetic heart rate control of patients with acquired heart diseaseAssociação Brasileira de Divulgação Científica1997-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900005Brazilian Journal of Medical and Biological Research v.30 n.9 1997reponame:Brazilian Journal of Medical and Biological Researchinstname:Associação Brasileira de Divulgação Científica (ABDC)instacron:ABDC10.1590/S0100-879X1997000900005info:eu-repo/semantics/openAccessNavarro,A.E.Dávila,D.F.Torres,A.Bellabarba,G.Donis,J.H.Casado,J.eng1998-10-07T00:00:00Zoai:scielo:S0100-879X1997000900005Revistahttps://www.bjournal.org/https://old.scielo.br/oai/scielo-oai.phpbjournal@terra.com.br||bjournal@terra.com.br1414-431X0100-879Xopendoar:1998-10-07T00:00Brazilian Journal of Medical and Biological Research - Associação Brasileira de Divulgação Científica (ABDC)false |
dc.title.none.fl_str_mv |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
title |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
spellingShingle |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency Navarro,A.E. Valsalva maneuver parasympathetic nervous system left ventricular systolic function chronic aortic insufficiency ejection fraction |
title_short |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
title_full |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
title_fullStr |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
title_full_unstemmed |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
title_sort |
Heart rate changes during the Valsalva maneuver in patients with isolated aortic insufficiency |
author |
Navarro,A.E. |
author_facet |
Navarro,A.E. Dávila,D.F. Torres,A. Bellabarba,G. Donis,J.H. Casado,J. |
author_role |
author |
author2 |
Dávila,D.F. Torres,A. Bellabarba,G. Donis,J.H. Casado,J. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Navarro,A.E. Dávila,D.F. Torres,A. Bellabarba,G. Donis,J.H. Casado,J. |
dc.subject.por.fl_str_mv |
Valsalva maneuver parasympathetic nervous system left ventricular systolic function chronic aortic insufficiency ejection fraction |
topic |
Valsalva maneuver parasympathetic nervous system left ventricular systolic function chronic aortic insufficiency ejection fraction |
description |
To determine the possible relationship between left ventricular dilatation and heart rate changes provoked by the Valsalva maneuver (Valsalva ratio), we studied 9 patients with isolated chronic aortic insufficiency. Left ventricular systolic function was assessed by two-dimensional echocardiography and cardiac catheterization. All patients were asymptomatic (functional class I of the New York Heart Association). The left ventricular internal diameters and volumes were significantly increased in all patients. The asymptomatic patients had either normal or slightly depressed ejection fraction (EF>0.40). The Valsalva ratio of these asymptomatic patients showed no significant correlation with the left ventricular volumes or with the left ventricular ejection fraction. In other words, parasympathetic heart rate control, as expressed by the Valsalva ratio, was normal in the asymptomatic patients with left ventricular dilatation and preserved left ventricular ejection fraction. Therefore, left ventricular dilatation may not be the major mechanism responsible for the abnormal parasympathetic heart rate control of patients with acquired heart disease |
publishDate |
1997 |
dc.date.none.fl_str_mv |
1997-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900005 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000900005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-879X1997000900005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Divulgação Científica |
publisher.none.fl_str_mv |
Associação Brasileira de Divulgação Científica |
dc.source.none.fl_str_mv |
Brazilian Journal of Medical and Biological Research v.30 n.9 1997 reponame:Brazilian Journal of Medical and Biological Research instname:Associação Brasileira de Divulgação Científica (ABDC) instacron:ABDC |
instname_str |
Associação Brasileira de Divulgação Científica (ABDC) |
instacron_str |
ABDC |
institution |
ABDC |
reponame_str |
Brazilian Journal of Medical and Biological Research |
collection |
Brazilian Journal of Medical and Biological Research |
repository.name.fl_str_mv |
Brazilian Journal of Medical and Biological Research - Associação Brasileira de Divulgação Científica (ABDC) |
repository.mail.fl_str_mv |
bjournal@terra.com.br||bjournal@terra.com.br |
_version_ |
1754302928801234944 |