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Introducao Estima-se que um entre tres adultos nos Estados Unidos da America (EUA) tem algum tipo de Doenca Cardiovascular (DCV), sendo o Infarto Agudo do Miocardio (IAM) a principal condicao. Nos EUA, estima-se que mais de um milhao de pessoas sao vitimas de IAM ao ano. No Brasil, em 2011, 384.615 mortes foram atribuidas a DCV. Em 2010, a American Heart Association (AHA) propos a avaliacao de 7 metricas relativas a Saude Cardiovascular (SCV) que, potencialmente, teriam grande impacto no [...]

Background: The classification or index of heart failure severity in patients with acute myocardial infarction (AMI) was proposed by Killip and Kimball aiming at assessing the risk of in-hospital death and the potential benefit of specific management of care provided in Coronary Care Units (CCU) during the decade of 60. Objective: To validate the risk stratification of Killip classification in the long-term mortality and compare the prognostic value in patients with non-ST-segment elevation MI (NSTEMI) relative to patients with ST-segment elevation MI (STEMI), in the era of reperfusion and modern antithrombotic therapies. Methods: We evaluated 1906 patients with documented AMI and admitted to the CCU, from 1995 to 2011, with a mean follow-up of 05 years to assess total mortality. Kaplan-Meier (KM) curves were developed for comparison between survival distributions according to Killip class and NSTEMI versus STEMI. Cox proportional regression models were developed to determine the independent association between Killip class and mortality, with sensitivity analyses based on type of AMI. Results: The proportions of deaths and the KM survival distributions were significantly different across Killip class >1 (p 1 (p

Background: The association between high-sensitivity C-reactive protein and recurrent major adverse cardiovascular events (MACE) in patients with ST-elevation myocardial infarction who undergo primary percutaneous coronary intervention remains controversial. Objective: To investigate the potential association between high-sensitivity C-reactive protein and an increased risk of MACE such as death, heart failure, reinfarction, and new revascularization in patients with ST-elevation myocardial infarction treated with primary percutaneous coronary intervention. Methods: This prospective cohort study included 300 individuals aged >18 years who were diagnosed with ST-elevation myocardial infarction and underwent primary percutaneous coronary intervention at a tertiary health center. An instrument evaluating clinical variables and the Thrombolysis in Myocardial Infarction (TIMI) and Global Registry of Acute Coronary Events (GRACE) risk scores was used. High-sensitivity C-reactive protein was determined by nephelometry. The patients were followed-up during hospitalization and up to 30 days after infarction for the occurrence of MACE. Student's t, Mann-Whitney, chi-square, and logistic regression tests were used for statistical analyses. P values of ≤0.05 were considered statistically significant. Results: The mean age was 59.76 years, and 69.3% of patients were male. No statistically significant association was observed between high-sensitivity C-reactive protein and recurrent MACE (p = 0.11). However, high-sensitivity C-reactive protein was independently associated with 30-day mortality when adjusted for TIMI [odds ratio (OR), 1.27; 95% confidence interval (CI), 1.07-1.51; p = 0.005] and GRACE (OR, 1.26; 95% CI, 1.06-1.49; p = 0.007) risk scores. Conclusion: Although high-sensitivity C-reactive protein was not predictive of combined major cardiovascular events within 30 days after ST-elevation myocardial infarction in patients who underwent primary angioplasty and stent implantation, it was an independent predictor of 30-day mortality. Fundamento: A associação entre proteína C-reativa ultrassensível e eventos cardiovasculares maiores recorrentes em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronariana percutânea primária é controversa. Objetivo: Verificar se a proteína C-reativa ultrassensível está associada a risco aumentado de eventos cardiovasculares maiores, como morte, insuficiência cardíaca, reinfarto e nova revascularização, em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST tratados com intervenção coronariana percutânea primária. Métodos: Coorte prospectiva, incluindo 300 indivíduos maiores de 18 anos admitidos em um centro terciário com diagnóstico de infarto agudo do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronariana percutânea primária. Utilizou-se instrumento contendo variáveis clínicas e escores de risco TIMI e GRACE, além da proteína C-reativa ultrassensível analisada por nefelometria. Os pacientes foram acompanhados na internação e até 30 dias após o infarto para a ocorrência de eventos cardiovasculares maiores recorrentes. Na análise estatística, foram utilizados os testes t de Student, Mann-Whitney, qui-quadrado e regressão logística. O valor de p ≤ 0,05 foi considerado significativo. Resultados: A média de idade foi de 59,76 anos, sendo 69,3% do gênero masculino. Não houve associação estatisticamente significativa entre proteína C-reativa ultrassensível e eventos cardiovasculares maiores recorrentes (p = 0,11). No entanto, a proteína C-reativa ultrassensível foi associada a óbito em 30 dias, de forma independente, quando ajustada para o escore TIMI (razão de chances de 1,27; intervalo de confiança de 95% de 1,07-1,51; valor de p = 0,005) e GRACE (razão de chances de 1,26; intervalo de confiança de 95% de 1,06-1,49; valor de p = 0,007). Conclusão: Embora a proteína C-reativa ultrassensível não tenha sido preditora de eventos cardiovasculares maiores combinados até o 30° dia de evolução de infarto agudo do miocárdio com elevação do segmento ST, em pacientes submetidos à angioplastia primária e implante de stent, ela foi um preditor independente de mortalidade em 30 dias.