A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD
Autor(a) principal: | |
---|---|
Data de Publicação: | 1999 |
Outros Autores: | , , , , , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/19313 |
Resumo: | Objective - To assess the changes in ventricular evoked responses (VER) produced by the decrease in left ventricular outflow tract gradient (LVOTG) in patients with hypertrophic obstructive cardiomyopathy (HOCM) treated with dual-chamber (DDD) pacing. Methods - A pulse generator Physios CTM (Biotronik, Germany) was implanted in 9 patients with severe drug-refractory HOCM. After implantation, the following conditions were assessed: 1) Baseline evaluation: different AV delay (ranging from 150ms to 50 ms) were sequentially programmed during 5 to 10 minutes, and the LVOTG (as determined by Doppler echocardiography) and VER recorded; 2) standard evaluation, when the best AV delay (resulting in the lowest LVOTG) programmed at the initial evaluation was maintained so that its effect on VER and LVOTG could be assessed during each chronic pacing evaluation. Results - LVOTG decreased after DDD pacing, with a mean value of 59 ± 24 mmHg after dual chamber pacemaker, which was significantly less than the gradient before pacing (98 + 22mmHg). An AV delay >100ms produced a significantly lower decrease in VER depolarization duration (VERDD) when compared to an AV delay £100ms. Linear regression analyses showed a significant correlation between the LVOTG values and the magnitude of VER (r=0.69; p<0.05) in the 9 studied patients. Conclusion - The telemetry obtained intramyocardial electrogram is a sensitive means to assess left ventricular dynamics in patients with HOCM treated with DDD pacing. |
id |
UFRGS-2_2ec27e72b85ff10350a422484ccf63d9 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/19313 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Sant'Anna, João Ricardo MichielinPrati, RaquelHutten, HelmutSchreier, GunterKastner, PeterKalil, Renato Abdala KaramPrates, Paulo Roberto LunardiCastro, IranAzambuja, Paulo C.Faes, Farid CézarNesralla, Ivo AbrahaoSchaldach, Max2010-04-16T09:09:12Z19990066-782Xhttp://hdl.handle.net/10183/19313000249973Objective - To assess the changes in ventricular evoked responses (VER) produced by the decrease in left ventricular outflow tract gradient (LVOTG) in patients with hypertrophic obstructive cardiomyopathy (HOCM) treated with dual-chamber (DDD) pacing. Methods - A pulse generator Physios CTM (Biotronik, Germany) was implanted in 9 patients with severe drug-refractory HOCM. After implantation, the following conditions were assessed: 1) Baseline evaluation: different AV delay (ranging from 150ms to 50 ms) were sequentially programmed during 5 to 10 minutes, and the LVOTG (as determined by Doppler echocardiography) and VER recorded; 2) standard evaluation, when the best AV delay (resulting in the lowest LVOTG) programmed at the initial evaluation was maintained so that its effect on VER and LVOTG could be assessed during each chronic pacing evaluation. Results - LVOTG decreased after DDD pacing, with a mean value of 59 ± 24 mmHg after dual chamber pacemaker, which was significantly less than the gradient before pacing (98 + 22mmHg). An AV delay >100ms produced a significantly lower decrease in VER depolarization duration (VERDD) when compared to an AV delay £100ms. Linear regression analyses showed a significant correlation between the LVOTG values and the magnitude of VER (r=0.69; p<0.05) in the 9 studied patients. Conclusion - The telemetry obtained intramyocardial electrogram is a sensitive means to assess left ventricular dynamics in patients with HOCM treated with DDD pacing.application/pdfporArquivos Brasileiros de Cardiologia. Sao Paulo. vol. 73, n. 2 (aug. 1999), p. 169-174Cardiomiopatia hipertróficaMarca-passo artificialObstructive hypertrophic cardiomyopathyDDD pacing intracardiac electrogramA resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDDVentricular evoked response in patients with hypertrophic obstructive cardiomyopathy treated with DDD pacing info:eu-repo/semantics/articleinfo:eu-repo/semantics/otherinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000249973.pdf000249973.pdfTexto completo (inglês)application/pdf200205http://www.lume.ufrgs.br/bitstream/10183/19313/1/000249973.pdfbcae083468f1ccf01df6c7c9f62e86b7MD51TEXT000249973.pdf.txt000249973.pdf.txtExtracted Texttext/plain24124http://www.lume.ufrgs.br/bitstream/10183/19313/2/000249973.pdf.txtefbba41170f4c85c6766b4abe07eea46MD52THUMBNAIL000249973.pdf.jpg000249973.pdf.jpgGenerated Thumbnailimage/jpeg2045http://www.lume.ufrgs.br/bitstream/10183/19313/3/000249973.pdf.jpgce14db4b51dc3c47bf389087631b7ff9MD5310183/193132018-10-09 08:22:45.099oai:www.lume.ufrgs.br:10183/19313Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-09T11:22:45Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
dc.title.alternative.en.fl_str_mv |
Ventricular evoked response in patients with hypertrophic obstructive cardiomyopathy treated with DDD pacing |
title |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
spellingShingle |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD Sant'Anna, João Ricardo Michielin Cardiomiopatia hipertrófica Marca-passo artificial Obstructive hypertrophic cardiomyopathy DDD pacing intracardiac electrogram |
title_short |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
title_full |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
title_fullStr |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
title_full_unstemmed |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
title_sort |
A resposta ventricular evocada nos pacientes com miocardiopatia hipertrofica obstrutiva tratada por marcapasso DDD |
author |
Sant'Anna, João Ricardo Michielin |
author_facet |
Sant'Anna, João Ricardo Michielin Prati, Raquel Hutten, Helmut Schreier, Gunter Kastner, Peter Kalil, Renato Abdala Karam Prates, Paulo Roberto Lunardi Castro, Iran Azambuja, Paulo C. Faes, Farid Cézar Nesralla, Ivo Abrahao Schaldach, Max |
author_role |
author |
author2 |
Prati, Raquel Hutten, Helmut Schreier, Gunter Kastner, Peter Kalil, Renato Abdala Karam Prates, Paulo Roberto Lunardi Castro, Iran Azambuja, Paulo C. Faes, Farid Cézar Nesralla, Ivo Abrahao Schaldach, Max |
author2_role |
author author author author author author author author author author author |
dc.contributor.author.fl_str_mv |
Sant'Anna, João Ricardo Michielin Prati, Raquel Hutten, Helmut Schreier, Gunter Kastner, Peter Kalil, Renato Abdala Karam Prates, Paulo Roberto Lunardi Castro, Iran Azambuja, Paulo C. Faes, Farid Cézar Nesralla, Ivo Abrahao Schaldach, Max |
dc.subject.por.fl_str_mv |
Cardiomiopatia hipertrófica Marca-passo artificial |
topic |
Cardiomiopatia hipertrófica Marca-passo artificial Obstructive hypertrophic cardiomyopathy DDD pacing intracardiac electrogram |
dc.subject.eng.fl_str_mv |
Obstructive hypertrophic cardiomyopathy DDD pacing intracardiac electrogram |
description |
Objective - To assess the changes in ventricular evoked responses (VER) produced by the decrease in left ventricular outflow tract gradient (LVOTG) in patients with hypertrophic obstructive cardiomyopathy (HOCM) treated with dual-chamber (DDD) pacing. Methods - A pulse generator Physios CTM (Biotronik, Germany) was implanted in 9 patients with severe drug-refractory HOCM. After implantation, the following conditions were assessed: 1) Baseline evaluation: different AV delay (ranging from 150ms to 50 ms) were sequentially programmed during 5 to 10 minutes, and the LVOTG (as determined by Doppler echocardiography) and VER recorded; 2) standard evaluation, when the best AV delay (resulting in the lowest LVOTG) programmed at the initial evaluation was maintained so that its effect on VER and LVOTG could be assessed during each chronic pacing evaluation. Results - LVOTG decreased after DDD pacing, with a mean value of 59 ± 24 mmHg after dual chamber pacemaker, which was significantly less than the gradient before pacing (98 + 22mmHg). An AV delay >100ms produced a significantly lower decrease in VER depolarization duration (VERDD) when compared to an AV delay £100ms. Linear regression analyses showed a significant correlation between the LVOTG values and the magnitude of VER (r=0.69; p<0.05) in the 9 studied patients. Conclusion - The telemetry obtained intramyocardial electrogram is a sensitive means to assess left ventricular dynamics in patients with HOCM treated with DDD pacing. |
publishDate |
1999 |
dc.date.issued.fl_str_mv |
1999 |
dc.date.accessioned.fl_str_mv |
2010-04-16T09:09:12Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/other |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/19313 |
dc.identifier.issn.pt_BR.fl_str_mv |
0066-782X |
dc.identifier.nrb.pt_BR.fl_str_mv |
000249973 |
identifier_str_mv |
0066-782X 000249973 |
url |
http://hdl.handle.net/10183/19313 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.ispartof.pt_BR.fl_str_mv |
Arquivos Brasileiros de Cardiologia. Sao Paulo. vol. 73, n. 2 (aug. 1999), p. 169-174 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/19313/1/000249973.pdf http://www.lume.ufrgs.br/bitstream/10183/19313/2/000249973.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/19313/3/000249973.pdf.jpg |
bitstream.checksum.fl_str_mv |
bcae083468f1ccf01df6c7c9f62e86b7 efbba41170f4c85c6766b4abe07eea46 ce14db4b51dc3c47bf389087631b7ff9 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224701719085056 |