A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal

Introduction and Objectives: The aim of this study was to assess the impact of a conservative strategy in non-ST-segment elevation myocardial infarction in patients in the Portuguese Registry of Acute Coronary Syndromes. Methods: The 3780 patients included in the study over a three-year period were...

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Main Authors: Davide Moreira, Bruno Marmelo, Anne Delgado, Luís Nunes, João Pipa, Oliveira Santos
Format: Article
Language:English
Published: Elsevier 2015-05-01
Series:Revista Portuguesa de Cardiologia (English Edition)
Online Access:http://www.sciencedirect.com/science/article/pii/S2174204915000732
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author Davide Moreira
Bruno Marmelo
Anne Delgado
Luís Nunes
João Pipa
Oliveira Santos
spellingShingle Davide Moreira
Bruno Marmelo
Anne Delgado
Luís Nunes
João Pipa
Oliveira Santos
A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
Revista Portuguesa de Cardiologia (English Edition)
author_facet Davide Moreira
Bruno Marmelo
Anne Delgado
Luís Nunes
João Pipa
Oliveira Santos
author_sort Davide Moreira
title A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
title_short A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
title_full A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
title_fullStr A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
title_full_unstemmed A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in Portugal
title_sort conservative strategy in non-st-segment elevation myocardial infarction – constraints and prognosis: the situation in portugal
publisher Elsevier
series Revista Portuguesa de Cardiologia (English Edition)
issn 2174-2049
publishDate 2015-05-01
description Introduction and Objectives: The aim of this study was to assess the impact of a conservative strategy in non-ST-segment elevation myocardial infarction in patients in the Portuguese Registry of Acute Coronary Syndromes. Methods: The 3780 patients included in the study over a three-year period were divided into three groups: group 1, patients treated by a conservative strategy during hospitalization; group 2, patients who underwent coronary angiography without percutaneous coronary intervention (PCI); and group 3, patients who underwent PCI. Clinical and procedural data and in-hospital complications were compared. The primary endpoint was defined as in-hospital or one-year mortality and the secondary endpoint as the presence of at least one of the following in-hospital complications: major bleeding according to the GUSTO criteria, need for blood transfusion, invasive ventilation, heart failure or reinfarction. Results: Of the patients analyzed, 16.5% were treated by a conservative strategy. Patients in this group were older, more often women, and had more high-risk factors. A conservative strategy was associated with a higher rate of the primary endpoint – in-hospital mortality (10.6% vs. 1.1% vs. 0.6% in groups 1, 2 and 3, respectively, p<0.001, odds ratio (OR) 6.974, 95% confidence interval [CI]: 2.775–17.527) and one-year mortality (26.1% vs. 6.8% vs. 4.1%, p<0.001, hazard ratio (HR) 2.925, 95% CI: 1.433–5.974) – and of the secondary endpoint – 37.2% vs. 18.9% vs. 14.6%, p<0.001; OR 1.471 95% CI: 1.043–2.076. Conclusions: In this patient population, a conservative strategy is an independent predictor of in-hospital mortality, in-hospital complications and one-year mortality. Resumo: Introdução e objetivo: Avaliar o impacto da estratégia conservadora no enfarte agudo do miocárdio sem supradesnivelamento de ST nos doentes do Registo Nacional de Síndromes Coronárias Agudas. Métodos: Dos 3780 doentes incluídos no estudo durante um período de três anos, foram formados três grupos: no grupo 1 foram incluídos os submetidos a estratégia conservadora; no grupo 2 foram incluídos os doentes submetidos a coronariografia sem realização de intervenção coronária percutânea e no grupo 3 os que foram submetidos a intervenção coronária percutânea. Compararam-se as características clínicas e de procedimento e as complicações ocorridas no internamento. O endpoint primário foi definido pela mortalidade intra-hospitalar ou morte ao fim de um ano e o endpoint secundário foi definido pela ocorrência de pelo menos uma das seguintes complicações: hemorragia grave definida pelos critérios de GUSTO, necessidade de transfusão, ventilação invasiva, insuficiência cardíaca e reenfarte. Resultados: Dos doentes analisados, 16,5% foram submetidos a estratégia conservadora; estes eram mais velhos, mais frequentemente mulheres e apresentavam mais fatores de alto risco. A estratégia conservadora associou-se a maior atingimento do endpoint primário – mortalidade intra-hospitalar (10,6% versus 1,1% versus 0,6%, p < 0,001, odds-ratio [OR] de 6,974, intervalo de confiança a 95% [IC95%]: 2.775-17.527), mortalidade ao ano (26,1% versus 6,8% versus 4,1%, p < 0,001, hazard-ratio (HR) 2.925, IC95%: 1.433-5.974) – e do endpoint secundário – 37,2% versus 18,9% versus 14,6%, p < 0,001; OR 1.471 IC95%: 1.043-2.076. Conclusões: Neste conjunto de doentes, a estratégia conservadora é um preditor independente de mortalidade intra-hospitalar, complicações intra-hospitalares e da mortalidade ao ano. Keywords: Non-ST-elevation myocardial infarction, Conservative strategy, Prognosis, Palavras-chave: Enfarte agudo do miocárdio sem supradesnivelamento de ST, Estratégia conservadora, Prognóstico
url http://www.sciencedirect.com/science/article/pii/S2174204915000732
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spelling doaj-453bc5f5003e40e189fe9985dc1ae9c02020-11-24T22:09:55ZengElsevierRevista Portuguesa de Cardiologia (English Edition)2174-20492015-05-01345315328A conservative strategy in non-ST-segment elevation myocardial infarction – constraints and prognosis: The situation in PortugalDavide Moreira0Bruno Marmelo1Anne Delgado2Luís Nunes3João Pipa4Oliveira Santos5Corresponding author.; Serviço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalServiço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalServiço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalServiço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalServiço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalServiço de Cardiologia, Centro Hospitalar Tondela-Viseu, Viseu, PortugalIntroduction and Objectives: The aim of this study was to assess the impact of a conservative strategy in non-ST-segment elevation myocardial infarction in patients in the Portuguese Registry of Acute Coronary Syndromes. Methods: The 3780 patients included in the study over a three-year period were divided into three groups: group 1, patients treated by a conservative strategy during hospitalization; group 2, patients who underwent coronary angiography without percutaneous coronary intervention (PCI); and group 3, patients who underwent PCI. Clinical and procedural data and in-hospital complications were compared. The primary endpoint was defined as in-hospital or one-year mortality and the secondary endpoint as the presence of at least one of the following in-hospital complications: major bleeding according to the GUSTO criteria, need for blood transfusion, invasive ventilation, heart failure or reinfarction. Results: Of the patients analyzed, 16.5% were treated by a conservative strategy. Patients in this group were older, more often women, and had more high-risk factors. A conservative strategy was associated with a higher rate of the primary endpoint – in-hospital mortality (10.6% vs. 1.1% vs. 0.6% in groups 1, 2 and 3, respectively, p<0.001, odds ratio (OR) 6.974, 95% confidence interval [CI]: 2.775–17.527) and one-year mortality (26.1% vs. 6.8% vs. 4.1%, p<0.001, hazard ratio (HR) 2.925, 95% CI: 1.433–5.974) – and of the secondary endpoint – 37.2% vs. 18.9% vs. 14.6%, p<0.001; OR 1.471 95% CI: 1.043–2.076. Conclusions: In this patient population, a conservative strategy is an independent predictor of in-hospital mortality, in-hospital complications and one-year mortality. Resumo: Introdução e objetivo: Avaliar o impacto da estratégia conservadora no enfarte agudo do miocárdio sem supradesnivelamento de ST nos doentes do Registo Nacional de Síndromes Coronárias Agudas. Métodos: Dos 3780 doentes incluídos no estudo durante um período de três anos, foram formados três grupos: no grupo 1 foram incluídos os submetidos a estratégia conservadora; no grupo 2 foram incluídos os doentes submetidos a coronariografia sem realização de intervenção coronária percutânea e no grupo 3 os que foram submetidos a intervenção coronária percutânea. Compararam-se as características clínicas e de procedimento e as complicações ocorridas no internamento. O endpoint primário foi definido pela mortalidade intra-hospitalar ou morte ao fim de um ano e o endpoint secundário foi definido pela ocorrência de pelo menos uma das seguintes complicações: hemorragia grave definida pelos critérios de GUSTO, necessidade de transfusão, ventilação invasiva, insuficiência cardíaca e reenfarte. Resultados: Dos doentes analisados, 16,5% foram submetidos a estratégia conservadora; estes eram mais velhos, mais frequentemente mulheres e apresentavam mais fatores de alto risco. A estratégia conservadora associou-se a maior atingimento do endpoint primário – mortalidade intra-hospitalar (10,6% versus 1,1% versus 0,6%, p < 0,001, odds-ratio [OR] de 6,974, intervalo de confiança a 95% [IC95%]: 2.775-17.527), mortalidade ao ano (26,1% versus 6,8% versus 4,1%, p < 0,001, hazard-ratio (HR) 2.925, IC95%: 1.433-5.974) – e do endpoint secundário – 37,2% versus 18,9% versus 14,6%, p < 0,001; OR 1.471 IC95%: 1.043-2.076. Conclusões: Neste conjunto de doentes, a estratégia conservadora é um preditor independente de mortalidade intra-hospitalar, complicações intra-hospitalares e da mortalidade ao ano. Keywords: Non-ST-elevation myocardial infarction, Conservative strategy, Prognosis, Palavras-chave: Enfarte agudo do miocárdio sem supradesnivelamento de ST, Estratégia conservadora, Prognósticohttp://www.sciencedirect.com/science/article/pii/S2174204915000732