Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivos Brasileiros de Cardiologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2015000200003 |
Resumo: | Background: Echocardiography, though non-invasive and having relatively low-cost, presents issues of variability which can limit its use in epidemiological studies. Objective: To evaluate left ventricular mass reproducibility when assessed at acquisition (online) compared to when assessed at a reading center after electronic transmission (offline) and also when assessed by different readers at the reading center. Methods: Echocardiographers from the 6 ELSA-Brasil study investigation centers measured the left ventricular mass online during the acquisition from 124 studies before transmitting to the reading center, where studies were read according to the study protocol. Half of these studies were blindly read by a second reader in the reading center. Results: From the 124 echocardiograms, 5 (4%) were considered not measurable. Among the remaining 119, 72 (61%) were women, mean age was 50.2 ± 7.0 years and 2 had structural myocardial abnormalities. Images were considered to be optimal/ good by the reading center for 110 (92.4%) cases. No significant difference existed between online and offline measurements (1,29 g, CI 95% −3.60-6.19), and the intraclass correlation coefficient between them was 0.79 (CI 95% 0.71-0.85). For images read by two readers, the intraclass correlation coefficient was 0.86 (CI 95% 0.78-0.91). Conclusion: There were no significant drifts between online and offline left ventricular mass measurements, and reproducibility was similar to that described in previous studies. Central quantitative assessment of echocardiographic studies in reading centers, as performed in the ELSA-Brasil study, is feasible and useful in clinical and epidemiological studies performed in our setting. |
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Arquivos Brasileiros de Cardiologia (Online) |
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Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-BrasilHypertrophy Left VentricularEchocardiographyDimensional Measurement AccuracyMulticenter StudiesReproducibiity of Results Background: Echocardiography, though non-invasive and having relatively low-cost, presents issues of variability which can limit its use in epidemiological studies. Objective: To evaluate left ventricular mass reproducibility when assessed at acquisition (online) compared to when assessed at a reading center after electronic transmission (offline) and also when assessed by different readers at the reading center. Methods: Echocardiographers from the 6 ELSA-Brasil study investigation centers measured the left ventricular mass online during the acquisition from 124 studies before transmitting to the reading center, where studies were read according to the study protocol. Half of these studies were blindly read by a second reader in the reading center. Results: From the 124 echocardiograms, 5 (4%) were considered not measurable. Among the remaining 119, 72 (61%) were women, mean age was 50.2 ± 7.0 years and 2 had structural myocardial abnormalities. Images were considered to be optimal/ good by the reading center for 110 (92.4%) cases. No significant difference existed between online and offline measurements (1,29 g, CI 95% −3.60-6.19), and the intraclass correlation coefficient between them was 0.79 (CI 95% 0.71-0.85). For images read by two readers, the intraclass correlation coefficient was 0.86 (CI 95% 0.78-0.91). Conclusion: There were no significant drifts between online and offline left ventricular mass measurements, and reproducibility was similar to that described in previous studies. Central quantitative assessment of echocardiographic studies in reading centers, as performed in the ELSA-Brasil study, is feasible and useful in clinical and epidemiological studies performed in our setting. Sociedade Brasileira de Cardiologia - SBC2015-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2015000200003Arquivos Brasileiros de Cardiologia v.104 n.2 2015reponame:Arquivos Brasileiros de Cardiologia (Online)instname:Sociedade Brasileira de Cardiologia (SBC)instacron:SBC10.5935/abc.20140183info:eu-repo/semantics/openAccessTognon,Alexandre PereiraFoppa,MuriloLuft,Vivian CristineChambless,Lloyd EllwoodLotufo,PauloEl Aouar,Lilia Maria MameriFernandes,Luciana PereiraDuncan,Bruce Bartholoweng2015-04-08T00:00:00Zoai:scielo:S0066-782X2015000200003Revistahttp://www.arquivosonline.com.br/https://old.scielo.br/oai/scielo-oai.php||arquivos@cardiol.br1678-41700066-782Xopendoar:2015-04-08T00:00Arquivos Brasileiros de Cardiologia (Online) - Sociedade Brasileira de Cardiologia (SBC)false |
dc.title.none.fl_str_mv |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
title |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
spellingShingle |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil Tognon,Alexandre Pereira Hypertrophy Left Ventricular Echocardiography Dimensional Measurement Accuracy Multicenter Studies Reproducibiity of Results |
title_short |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
title_full |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
title_fullStr |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
title_full_unstemmed |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
title_sort |
Reproducibility of Left Ventricular Mass by Echocardiogram in the ELSA-Brasil |
author |
Tognon,Alexandre Pereira |
author_facet |
Tognon,Alexandre Pereira Foppa,Murilo Luft,Vivian Cristine Chambless,Lloyd Ellwood Lotufo,Paulo El Aouar,Lilia Maria Mameri Fernandes,Luciana Pereira Duncan,Bruce Bartholow |
author_role |
author |
author2 |
Foppa,Murilo Luft,Vivian Cristine Chambless,Lloyd Ellwood Lotufo,Paulo El Aouar,Lilia Maria Mameri Fernandes,Luciana Pereira Duncan,Bruce Bartholow |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Tognon,Alexandre Pereira Foppa,Murilo Luft,Vivian Cristine Chambless,Lloyd Ellwood Lotufo,Paulo El Aouar,Lilia Maria Mameri Fernandes,Luciana Pereira Duncan,Bruce Bartholow |
dc.subject.por.fl_str_mv |
Hypertrophy Left Ventricular Echocardiography Dimensional Measurement Accuracy Multicenter Studies Reproducibiity of Results |
topic |
Hypertrophy Left Ventricular Echocardiography Dimensional Measurement Accuracy Multicenter Studies Reproducibiity of Results |
description |
Background: Echocardiography, though non-invasive and having relatively low-cost, presents issues of variability which can limit its use in epidemiological studies. Objective: To evaluate left ventricular mass reproducibility when assessed at acquisition (online) compared to when assessed at a reading center after electronic transmission (offline) and also when assessed by different readers at the reading center. Methods: Echocardiographers from the 6 ELSA-Brasil study investigation centers measured the left ventricular mass online during the acquisition from 124 studies before transmitting to the reading center, where studies were read according to the study protocol. Half of these studies were blindly read by a second reader in the reading center. Results: From the 124 echocardiograms, 5 (4%) were considered not measurable. Among the remaining 119, 72 (61%) were women, mean age was 50.2 ± 7.0 years and 2 had structural myocardial abnormalities. Images were considered to be optimal/ good by the reading center for 110 (92.4%) cases. No significant difference existed between online and offline measurements (1,29 g, CI 95% −3.60-6.19), and the intraclass correlation coefficient between them was 0.79 (CI 95% 0.71-0.85). For images read by two readers, the intraclass correlation coefficient was 0.86 (CI 95% 0.78-0.91). Conclusion: There were no significant drifts between online and offline left ventricular mass measurements, and reproducibility was similar to that described in previous studies. Central quantitative assessment of echocardiographic studies in reading centers, as performed in the ELSA-Brasil study, is feasible and useful in clinical and epidemiological studies performed in our setting. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-02-01 |
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=S0066-782X2015000200003 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0066-782X2015000200003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/abc.20140183 |
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 |
Sociedade Brasileira de Cardiologia - SBC |
publisher.none.fl_str_mv |
Sociedade Brasileira de Cardiologia - SBC |
dc.source.none.fl_str_mv |
Arquivos Brasileiros de Cardiologia v.104 n.2 2015 reponame:Arquivos Brasileiros de Cardiologia (Online) instname:Sociedade Brasileira de Cardiologia (SBC) instacron:SBC |
instname_str |
Sociedade Brasileira de Cardiologia (SBC) |
instacron_str |
SBC |
institution |
SBC |
reponame_str |
Arquivos Brasileiros de Cardiologia (Online) |
collection |
Arquivos Brasileiros de Cardiologia (Online) |
repository.name.fl_str_mv |
Arquivos Brasileiros de Cardiologia (Online) - Sociedade Brasileira de Cardiologia (SBC) |
repository.mail.fl_str_mv |
||arquivos@cardiol.br |
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1752126564822155264 |