Polarcardiographic analysis by automated digital minicomputer.
Autor(a) principal: | |
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Data de Publicação: | 1981 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877 |
Resumo: | Polarcardiographic criteria for myocardial infarction were established using an analogic computer and human readers. The sensitivity for revealing old myocardial infarction was found to be 37% greater than for ECG, with a false positive rate of less than 5%. The introduction of digital minicomputers, performing electronic measurements and vector analysis, allowed to process a daily large number of electrocardiologic tests as a routine clinical service (Woodward ECG Computer System). In the present study, the performance of the computer program in applying the polarcardiographic criteria for myocardial infarction was matched with that previously applied by human readers. Using the coronary-ventriculography as a golden standard, there were no significant differences in the specificity and the sensitivity was 51 % for human readers versus 53 % for the computer; when combined, both the computer and the cardiologist’s overread, the sensitivity was increased to 61 %. Using the new computer expanded diagnostic criteria, the sensitivity was 61%, and was raised to 67% with combined overreading. The sensitivities and the specificities obtained when the computer diagnosis and visual interpretations are combined, are those that apply to the Woodward ECG Computer System in daily use. |
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Polarcardiographic analysis by automated digital minicomputer.Polarcardiographic criteria for myocardial infarction were established using an analogic computer and human readers. The sensitivity for revealing old myocardial infarction was found to be 37% greater than for ECG, with a false positive rate of less than 5%. The introduction of digital minicomputers, performing electronic measurements and vector analysis, allowed to process a daily large number of electrocardiologic tests as a routine clinical service (Woodward ECG Computer System). In the present study, the performance of the computer program in applying the polarcardiographic criteria for myocardial infarction was matched with that previously applied by human readers. Using the coronary-ventriculography as a golden standard, there were no significant differences in the specificity and the sensitivity was 51 % for human readers versus 53 % for the computer; when combined, both the computer and the cardiologist’s overread, the sensitivity was increased to 61 %. Using the new computer expanded diagnostic criteria, the sensitivity was 61%, and was raised to 67% with combined overreading. The sensitivities and the specificities obtained when the computer diagnosis and visual interpretations are combined, are those that apply to the Woodward ECG Computer System in daily use.Ordem dos Médicos1981-04-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877oai:ojs.www.actamedicaportuguesa.com:article/3877Acta Médica Portuguesa; Vol. 3 No. 2 (1981): Março-Abril; 133-141Acta Médica Portuguesa; Vol. 3 N.º 2 (1981): Março-Abril; 133-1411646-07580870-399Xreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPporhttps://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877/3135Dower, G EBerghofer, DMissler, H EMachado, H. Bastosinfo:eu-repo/semantics/openAccess2022-12-20T11:02:59Zoai:ojs.www.actamedicaportuguesa.com:article/3877Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T16:18:36.875092Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Polarcardiographic analysis by automated digital minicomputer. |
title |
Polarcardiographic analysis by automated digital minicomputer. |
spellingShingle |
Polarcardiographic analysis by automated digital minicomputer. Dower, G E |
title_short |
Polarcardiographic analysis by automated digital minicomputer. |
title_full |
Polarcardiographic analysis by automated digital minicomputer. |
title_fullStr |
Polarcardiographic analysis by automated digital minicomputer. |
title_full_unstemmed |
Polarcardiographic analysis by automated digital minicomputer. |
title_sort |
Polarcardiographic analysis by automated digital minicomputer. |
author |
Dower, G E |
author_facet |
Dower, G E Berghofer, D Missler, H E Machado, H. Bastos |
author_role |
author |
author2 |
Berghofer, D Missler, H E Machado, H. Bastos |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Dower, G E Berghofer, D Missler, H E Machado, H. Bastos |
description |
Polarcardiographic criteria for myocardial infarction were established using an analogic computer and human readers. The sensitivity for revealing old myocardial infarction was found to be 37% greater than for ECG, with a false positive rate of less than 5%. The introduction of digital minicomputers, performing electronic measurements and vector analysis, allowed to process a daily large number of electrocardiologic tests as a routine clinical service (Woodward ECG Computer System). In the present study, the performance of the computer program in applying the polarcardiographic criteria for myocardial infarction was matched with that previously applied by human readers. Using the coronary-ventriculography as a golden standard, there were no significant differences in the specificity and the sensitivity was 51 % for human readers versus 53 % for the computer; when combined, both the computer and the cardiologist’s overread, the sensitivity was increased to 61 %. Using the new computer expanded diagnostic criteria, the sensitivity was 61%, and was raised to 67% with combined overreading. The sensitivities and the specificities obtained when the computer diagnosis and visual interpretations are combined, are those that apply to the Woodward ECG Computer System in daily use. |
publishDate |
1981 |
dc.date.none.fl_str_mv |
1981-04-30 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877 oai:ojs.www.actamedicaportuguesa.com:article/3877 |
url |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877 |
identifier_str_mv |
oai:ojs.www.actamedicaportuguesa.com:article/3877 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877 https://www.actamedicaportuguesa.com/revista/index.php/amp/article/view/3877/3135 |
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.publisher.none.fl_str_mv |
Ordem dos Médicos |
publisher.none.fl_str_mv |
Ordem dos Médicos |
dc.source.none.fl_str_mv |
Acta Médica Portuguesa; Vol. 3 No. 2 (1981): Março-Abril; 133-141 Acta Médica Portuguesa; Vol. 3 N.º 2 (1981): Março-Abril; 133-141 1646-0758 0870-399X reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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