Combinação de Ferramentas de Telecardiologia para Estratificação de Risco Cardiovascular na Atenção Primária: Dados do Estudo PROVAR+ / Combination of Tele-Cardiology Tools for Cardiovascular Risk Stratification in Primary Care: Data from the PROVAR+ Study

Resumo Fundamento: As ferramentas de telecardiologia são estratégias valiosas para melhorar a estratificação de risco. Objetivo: Objetivamos avaliar a acurácia da tele-eletrocardiografia (ECG) para predizer anormalidades no ecocardiograma de rastreamento na atenção primária. Métodos: Em 17 meses, 6 profissionais de saúde em 16 unidades de atenção primária foram treinados em protocolos simplificados de ecocardiografia portátil. Tele-ECGs foram registrados para diagnóstico final por um cardiologista. Pacientes consentidos com anormalidades maiores no ECG pelo código de Minnesota e uma amostra 1:5 de indivíduos normais foram submetidos a um questionário clínico e ecocardiograma de rastreamento interpretado remotamente. A doença cardíaca grave foi definida como doença valvular moderada/grave, disfunção/hipertrofia ventricular, derrame pericárdico ou anormalidade da motilidade. A associação entre alterações maiores do ECG e anormalidades ecocardiográficas foi avaliada por regressão logística da seguinte forma: 1) modelo não ajustado; 2) modelo 1 ajustado por idade/sexo; 3) modelo 2 mais fatores de risco (hipertensão/diabetes); 4) modelo 3 mais história de doença cardiovascular (Chagas/cardiopatia reumática/cardiopatia isquêmica/AVC/insuficiência cardíaca). Foram considerados significativos valores de p < 0,05. Resultados: No total, 1.411 pacientes realizaram ecocardiograma, sendo 1.149 (81%) com anormalidades maiores no ECG. A idade mediana foi de 67 anos (intervalo interquartil de 60 a 74) e 51,4% eram do sexo masculino. As anormalidades maiores no ECG se associaram a uma chance 2,4 vezes maior de doença cardíaca grave no ecocardiograma de rastreamento na análise bivariada (OR = 2,42 [IC 95% 1,76 a 3,39]) e permaneceram significativas (p < 0,001) após ajustes no modelo 2 (OR = 2,57 [IC 95% 1,84 a 3,65]), modelo 3 (OR = 2,52 [IC 95% 1,80 a 3,58]) e modelo 4 (OR = 2,23 [IC 95% 1,59 a 3,19]). Idade, sexo masculino, insuficiência cardíaca e doença cardíaca isquêmica também foram preditores independentes de doença cardíaca grave no ecocardiograma. Conclusões: As anormalidades do tele-ECG aumentaram a probabilidade de doença cardíaca grave no ecocardiograma de rastreamento, mesmo após ajustes para variáveis demográficas e clínicas.

Abstract Background: Tele-cardiology tools are valuable strategies to improve risk stratification. Objective: We aimed to evaluate the accuracy of tele-electrocardiography (ECG) to predict abnormalities in screening echocardiography (echo) in primary care (PC). Methods: In 17 months, 6 health providers at 16 PC units were trained on simplified handheld echo protocols. Tele-ECGs were recorded for final diagnosis by a cardiologist. Consented patients with major ECG abnormalities by the Minnesota code, and a 1:5 sample of normal individuals underwent clinical questionnaire and screening echo interpreted remotely. Major heart disease was defined as moderate/severe valve disease, ventricular dysfunction/hypertrophy, pericardial effusion, or wall-motion abnormalities. Association between major ECG and echo abnormalities was assessed by logistic regression as follows: 1) unadjusted model; 2) model 1 adjusted for age/sex; 3) model 2 plus risk factors (hypertension/diabetes); 4) model 3 plus history of cardiovascular disease (Chagas/rheumatic heart disease/ischemic heart disease/stroke/heart failure). P-values < 0.05 were considered significant. Results: A total 1,411 patients underwent echo; 1,149 (81%) had major ECG abnormalities. Median age was 67 (IQR 60 to 74) years, and 51.4% were male. Major ECG abnormalities were associated with a 2.4-fold chance of major heart disease on echo in bivariate analysis (OR = 2.42 [95% CI 1.76 to 3.39]), and remained significant after adjustments in models (p < 0.001) 2 (OR = 2.57 [95% CI 1.84 to 3.65]), model 3 (OR = 2.52 [95% CI 1.80 to3.58]), and model 4 (OR = 2.23 [95%CI 1.59 to 3.19]). Age, male sex, heart failure, and ischemic heart disease were also independent predictors of major heart disease on echo. Conclusions: Tele-ECG abnormalities increased the likelihood of major heart disease on screening echo, even after adjustments for demographic and clinical variables.

Prognóstico de Pacientes Chagásicos e não Chagásicos Submetidos a Implante de Marca-passo e Ressincronizador Cardíaco em Centro Terciário / Prognostic Evaluation of Chagasic and Non-Chagasic Patients Undergoing Pacemaker Implantation and Cardiac Resynchronization in a Tertiary Center

Resumo Fundamento: A cardiomiopatia chagásica (CCh) é responsável pelo implante de marca-passo (MP) em muitos pacientes, tendo sido associada a prognóstico adverso. Objetivos: Comparar o prognóstico da população chagásica e não chagásica submetida ao implante de MP e ressincronizador cardíaco. Métodos: Estudo observacional, retrospectivo, que analisou coorte de pacientes submetidos a implante desses dispositivos, em centro terciário, de outubro 2007 a dezembro de 2017, comparando o grupo de pacientes chagásicos com os não-chagásicos. O método não paramétrico de Kaplan-Meier foi utilizado para calcular a sobrevida dos pacientes. O nível de significância adotado na análise estatística foi de 5%. O desfecho primário foi a mortalidade por qualquer causa, enquanto os desfechos secundários foram a ocorrência de internação e o desfecho combinado internação e morte. Resultados: Um total de 911 pacientes foram incluídos, sendo que 23,4% apresentavam CCh. Em análise de Cox ajustada por sexo e idade, a doença de Chagas (dCh) não esteve associada ao risco aumentado de morte (HR: 1,14, IC:95%, 0,86-1,51, p=0,365), internação (HR: 0,79, IC:95%, 0,61-1,04, p=0,09) ou desfecho combinado morte e internação (HR: 0,90, IC:95%, 0,72-1,12, p=0,49). Conclusões: A dCh não se associou ao aumento do risco de morte, internação, ou desfecho combinado morte e internação, mesmo após ajuste para sexo e idade. Tais resultados se contrapõem aos de estudos prévios e sugerem modificação da qualidade do cuidado ao paciente cardiopata.

Abstract Background: Chagas cardiomyopathy (ChCC) is one of the causes of the implantation of pacemakers (PM) in many patients and has been associated with an adverse prognosis. Objectives: To compare the prognosis of the chagasic and non-chagasic populations undergoing PM and cardiac resynchronizer implantation. Methods: Observational, retrospective study, which analyzed a cohort of patients who underwent implantation of these devices, in a tertiary center, from October 2007 to December 2017, comparing the chagasic group with non-chagasic patients. The non-parametric Kaplan-Meier method was used to calculate patient survival. The significance level adopted in the statistical analysis was 5%. The primary outcome was mortality from any cause, while the secondary outcomes were the occurrence of hospitalization and the combination of hospitalization and death. Results: A total of 911 patients were included, of which 23.4% had ChCC. In a Cox analysis adjusted for sex and age, Chagas disease (ChD) was not associated with an increased risk of death (HR: 1.14, CI:95%, 0.86-1.51, p=0.365), hospitalization (HR: 0.79, CI:95%, 0.61-1.04, p=0.09) or combined outcome of death and hospitalization (HR: 0.90, CI:95%, 0.72-1 .12, p=0.49). Conclusions: ChD was not associated with an increased risk of death, hospitalization, or combined outcome of death and hospitalization, even after adjustment for sex and age. These results contrast with those of previous studies and suggest changes in the quality of care of patients with cardiomyopathy.

Manejo clínico da doença de Chagas na atenção primária à saúde em área endêmica do estado de Minas Gerais, Brasil / Clinical management of Chagas disease in primary health care in an endemic area in the state of Minas Gerais, Brazil

Objetivo: Descrever o manejo clínico da Doença de Chagas (DC) por profissionais médicos da Atenção Primária à Saúde (APS) de região endêmica. Metodologia: Estudo transversal entre médicos da APS de 23 municípios. A coleta contemplou questões Demográficas, Formação Acadêmica, Características da APS de Atuação, Práticas e Conhecimento Relativos à DC. Conduziram-se análises descritivas de todas as variáveis e bivariadas para os blocos de práticas e conhecimento relativos à DC considerando o tempo de conclusão da graduação. Resultados: Foram incluídos 136 médicos. A maioria mencionou conhecer o Protocolo Clínico e Diretriz Terapêutica da DC, mas não prescreveu o benzonidazol e se sente insegura no manejo do paciente. Na análise bivariada, a variável conhecimento sobre a DC adquirido na graduação mostrou-se associada estatisticamente ao tempo de graduação. Conclusão: Importantes obstáculos ainda persistem no manejo médico ao paciente com DC na APS. A partir desse achado espera-se incentivar a qualificação.

Objective: To describe the clinical management of Chagas Disease (CD) by Primary Health Care (PHC) physicians in an endemic region. Methodology: Cross-sectional study with PHC physicians from 23 municipalities. The collection included questions on Demographics, Academic Background, Characteristics of the APS in Action, Practices and Knowledge Relating to CD. Descriptive analyzes of all variables and bivariates were carried out for the blocks of practices and knowledge related to CD, considering the time of completion of graduation. Results: 136 physicians were included. Most mentioned knowing the CD Clinical Protocol and Therapeutic Guideline, but did not prescribe benznidazole and feel insecure in-patient management. In the bivariate analysis, the variable knowledge about CD acquired during graduation was statistically associated with graduation time. Conclusion: Important obstacles still persist in the medical management of patients with CD in PHC. Based on this finding, it is expected to encourage qualification.

Health Literacy, Patient Knowledge and Adherence to Oral Anticoagulation in Primary Care

Abstract Background Warfarin is the only oral anticoagulant available in the Brazilian public health system. Health knowledge and treatment are essential to achieving the desirable therapeutic effect. However, data on these aspects among primary care patients are still lacking. Objective To assess health literacy, patient knowledge, and adherence to oral anticoagulation with warfarin, as well as the medication regimen complexity in primary health units in the municipality of Divinópolis, Minas Gerais, Brazil. Methods This cross-sectional study included patients using warfarin from primary care settings. Sociodemographic and clinical data were collected from medical records. Short Assessment of Health Literacy for Portuguese-Speaking Adults (SAHLPA-18), Oral Anticoagulation Knowledge (OAK), adaptation of the Measure of Adherence to Treatment (MAT-adapted) to oral anticoagulation, and Medication Regimen Complexity Index (MRCI) were applied, and the time in therapeutic range (TTR) was calculated. Patients were stratified in two groups (TTR < 60% and TTR ≥ 60%) and compared using Fisher's exact test at a significance level of p < 0.050. Results Analysis included 162 patients (64.8 ± 12.7 years old, 55.6% women). Nonvalvular atrial fibrillation (26.5%) and venous thromboembolism (24.1%) were the main indications for warfarin, and 67.9%, 88.3%, and 16.7% of the patients had inadequate health literacy, insufficient knowledge regarding anticoagulant therapy, and non-adherence to warfarin therapy, respectively. There was no significant association of these parameters in relation to TTR. MRCI showed high pharmacotherapy complexity between the drug prescriptions. Conclusion This study showed alarming insufficient knowledge about warfarin therapy and low health literacy in primary care patients.

Carga das Doenças Crônicas Não Transmissíveis nos Países de Língua Portuguesa / The burden of Noncommunicable Diseases in Portuguese Language Countries

Resumo Foram analisadas tendências da mortalidade prematura por doenças crônicas não transmissíveis (DCNT) entre 1990 e 2019, as projeções até 2030 e os fatores de risco atribuíveis a estas doenças na Comunidade dos Países de Língua Portuguesa (CPLP). Utilizou-se estimativas do estudo Carga Global de Doenças e análise da carga de mortalidade prematura por DCNT para nove países da CPLP, utilizando taxas padronizadas por idade, usando-se RStudio. Portugal, Brasil, Guiné Equatorial, Angola e Guiné Bissau apresentam taxas de mortalidade prematura por DCNT em declínio e; Timor Leste, Cabo Verde, São Tomé e Príncipe e Moçambique apresentaram aumento das taxas. As projeções indicam que nenhum dos países deverá atingir as metas de redução em um terço da mortalidade prematura por DCNT até 2030. A carga de doença atribuível mostrou que os fatores de riscos mais importantes em 2019 foram: pressão arterial sistólica elevada, tabaco, riscos dietéticos, índice de massa corporal elevado e poluição do ar. Conclui-se pelas profundas diferenças na carga de DCNT entre os países, com melhores resultados em Portugal e Brasil e que nenhum país do CPLP deverá atingir a meta de redução das DCNT até 2030.

Abstract The present study analyzed trends in premature mortality from Noncommunicable diseases (NCDs) between 1990 and 2019, the projections up to 2030, and the risk factors (RFs) attributable to these diseases in the Community of Portuguese Language Countries (CPLP). Estimates from the Global Burden of Disease (GBD) study and the analysis of the burden of premature mortality due to NCDs were used for nine CPLP countries, applying age-standardized rates, using RStudio. Portugal, Brazil, Equatorial Guinea, Angola, and Guinea Bissau showed declining premature mortality rates caused by NCDs, while East Timor, Cape Verde, São Tomé and Príncipe, and Mozambique showed an increase in rates. Projections indicate that none of the countries is expected to achieve the goals of reducing premature mortality due to NCDs by one third by 2030. The attributable burden of disease showed that the most important RFs in 2019 were: high systolic blood pressure (SBP), tobacco, dietary risks, high body mass index (BMI), and air pollution. It can therefore be concluded that there are profound differences in the burden of NCDs among the countries, with better results in Portugal and Brazil, and that no CPLP country is likely to reach the NCD reduction target by 2030.

Overview of Chagas disease surveillance in an endemic region in Southeastern Brazil

ABSTRACT Chagas disease (CD) is a neglected disease caused by the protozoan Trypanosoma cruzi. It has high morbidity and mortality rates and mainly affects socially vulnerable populations. This is a cross-sectional study, with retrospective and prospective data collection. Using questionnaires applied to environmental surveillance coordinators, we characterized the status of CD surveillance activities in municipalities endemic for the disease in Northern Minas Gerais State (MG) and Jequitinhonha Valley (Vale do Jequitinhonha). Moreover, we spatialized the vulnerability index for chronic CD in the study area. The population consisted of 22 environmental surveillance coordinators, active in 2020, from Northern MG and Jequitinhonha Valley, 21 municipalities included in the SaMi-Trop research project, and Montes Claros municipality. After applying the questionnaires to the coordinators, a descriptive analysis of the variables was performed. To characterize the active municipalities, the explanatory variables collected in the questionnaire were compared with the dichotomous variable. Bivariate descriptive analysis was performed. Finally, geoprocessing techniques were used to spatialize the data and prepare maps. Regarding the team of endemic combat agents (ECA), 90.9% reported the lack of a specific team for CD vector control actions. Of the 22 municipalities participating in this study, nine were active (41.1%). Only 25% (n=2) of active municipalities (9% of the municipalities studied) met the target of visiting 50% of households per year. Finally, 81.1% of the coordinators stated that in their municipality, they developed actions linked to primary health care (PHC). The implementation of CD surveillance activities weakened in the endemic region. Few municipalities have a surveillance team, with low regularity of active surveillance and noncompliance with the program's goal. The results suggest insufficient recording of activities in the information system, considering that there are municipalities that report performing the activities, but no production record was observed in the system.

Estatísticas Cardiovasculares do Programa Boas Práticas em Cardiologia - Dados de um Hospital Público Terciário Brasileiro / Cardiovascular Statistics from the Good Practices in Cardiology Program - Data from a Brazilian Tertiary Public Hospital

Resumo Fundamento O Programa Boas Práticas em Cardiologia é uma iniciativa da Sociedade Brasileira de Cardiologia (SBC) destinada à melhoria do cuidado cardiovascular nos hospitais públicos brasileiros. Objetivos Descrever características dos pacientes internados com Síndrome Coronariana Aguda (SCA) e Insuficiência Cardíaca (IC) e avaliar os indicadores de desempenho alcançados nos braços (SCA e IC) em um hospital público terciário, com uma meta pré-estabelecida de 85% de aderência às recomendações da SBC. Métodos Estudo do tipo transversal descritivo realizado por meio da coleta de dados de pacientes que estiveram internados entre maio de 2016 e setembro de 2019. Resultados Foram incluídos 1036 pacientes, 273 pacientes no braço IC e 763 no braço SCA. A média de idade foi de 59,8 ± 12,0 anos na SCA e 57,0 ± 14,1 anos na IC, com predomínio do sexo masculino em ambos os grupos. Mais da metade dos pacientes não tinham ensino fundamental completo e mais de 90% declararam renda mensal inferior a cinco salários-mínimos. Na SCA, predominou o diagnóstico de SCA com supradesnivelamento do segmento ST (66,3%) e 2,9% dos pacientes foram a óbito. Na IC, a etiologia mais comum foi a Doença de Chagas (25,8%) e 17,9% dos pacientes foram a óbito. Na avaliação dos indicadores de desempenho, nove dos 12 indicadores tiveram taxas de aderência acima de 85%. Conclusão Programas de qualidade são essenciais à melhoria do cuidado e os indicadores de desempenho do hospital apontam para uma boa adesão às diretrizes assistenciais da SBC, particularmente no braço da SCA.

Abstract Background The Good Practices in Cardiology Program is an initiative created by the Brazilian Society of Cardiology (SBC) to improve the quality of care of cardiovascular disease patients in Brazilian public hospitals. Objectives To characterize patients admitted to a tertiary public hospital with diagnosis of acute coronary syndrome (ACS) or heart failure (HF) and to evaluate performance indicators in both ACS and HF arms, with a pre-established target of 85% adherence to the SBC recommendations. Methods This was a descriptive cross-sectional study through data collection of patients hospitalized between May 2016 and September 2019. Results A total of 1,036 patients were included, 273 in the HF arm and 763 in the ACS arm. Mean age was 59.8 ± 12.0 years in the ACS and 57.0 ± 14.1 years in the HF, with a predominance of male patients in both groups. More than half of patients had some primary education and more than 90% reported a monthly income of less than five minimum wages. In ACS, the diagnosis of ACS with ST segment elevation was predominant (66.3%), and 2.9% of patients died. In HF, the most common etiology was Chagas disease (25.8%), and 17.9% died. Analysis of the performance indicators revealed an adherence rate higher than 85% to nine of the 12 indicators. Conclusion Quality programs are essential for improvement of quality of care. Performance indicators pointed to a good adherence to the SBC guidelines, mainly in the ACS arm.

Evaluation of the properties of WHODAS-12 measurements in individuals with Chagas disease in Brazil

ABSTRACT Numerous tests employed to predict cardiac and functional status are expensive and not widely accessible for a considerable number of patients, particularly those diagnosed with Chagas disease (CD) residing in remote and endemic regions. To date, there is no knowledge of studies that have validated instruments that address functionality in an expanded way, including the biopsychosocial factors in patients with CD. This study aims to evaluate the psychometric properties of the World Health Organization Disability Assessment Schedule (WHODAS 2.0), in its 12-item shortened version (WHODAS-12) when applied to patients with CD. This is a cross-sectional study of a prospective cohort that follows individuals with CD (SaMi-Trop). Data collection took place between October 2019 and March 2020. In the interviews, sociodemographic information, life habits, clinical information, and indicators of disability measured by WHODAS-12 were collected. Descriptive analysis, internal consistency and construct validity of the instrument were performed. A total of 628 patients with CD were interviewed, most were women (69.5%), their mean age was of 57 years, and most declared an average self-perception of health (43.4%). The 12 items of WHODAS-12 were distributed into three factors, which together account for 61% of the variance. The Kaiser-Meyer-Olkin (KMO) index was 0.90, indicating adequacy of the sample for factor analysis. The internal consistency of the global scale showed alpha = 0.87. The percentage of incapacity was 16.05%, indicating mild incapacity for the evaluated patients. WHODAS-12 is a valid and reliable measure to assess the disability of the Brazilian population with CD.

Chagas disease and perceived quality of life: a cross-sectional study

ABSTRACT Background: Chagas disease (ChD) is a neglected tropical disease that is caused by the protozoan parasite Trypanosoma cruzi and can negatively impact quality of life (QoL). This study aimed to assess and compare QoL between individuals with and without ChD. Methods: This cross-sectional study was performed within a concurrent cohort study (REDS). The participants were derived from two blood donation centers: São Paulo capital and Montes Claros, Minas Gerais, Brazil. Participants with ChD were identified in blood donations by serological diagnosis between 2008 and 2010, and those without ChD were donors with negative serology identified during the same period. QoL was assessed using the World Health Organization Quality of Life-BREF questionnaire. Logistic regression was used to compare sociodemographic and clinical characteristics between the groups, and mean, standard deviation, and beta regression were used to compare QoL. Results: In total, 611 individuals participated in the study (328 with ChD and 283 without ChD). Participants with ChD had lower QoL in the physical (p=0.02) and psychological (p<0.01) domains than did individuals without CD. Conclusions: Individuals with ChD had worse QoL perceptions. These results provide a comprehensive understanding of the impact of ChD on individuals' QoL, while also highlighting potential opportunities for improving the care and treatment of those affected.

Volume de Gordura Epicárdica está Associada com Disfunção Endotelial, mas Não com Calcificação Coronariana: Do ELSA-Brasil / Epicardial Fat Volume Is Associated with Endothelial Dysfunction, but not with Coronary Calcification: From the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil)

Resumo Fundamento O aumento no volume de gordura epicárdica (VGE) está relacionado com doença arterial coronariana (DAC), independentemente de gordura visceral ou subcutânea. O mecanismo dessa associação não é claro. O escore de cálcio coronariano (CC) e a disfunção endotelial estão relacionados com eventos coronarianos, mas não está bem esclarecido se o VGE está relacionado com esses marcadores. Objetivos Avaliar a associação entre VGE medido por método automatizado, fatores de risco cardiovasculares, escore de CC, e função endotelial. Métodos: Em 470 participantes do Estudo Longitudinal de Saúde do Adulto LSA-Brasil com medidas de VGE, escore de CC e função endotelial, realizamos modelos multivariados para avaliar a relação entre fatore de risco cardiovascular e VGE (variável resposta), e entre VGE (variável explicativa), e função endotelial ou escore de CC. Valor de p<0,05 bilateral foi considerado estatisticamente significativo. Resultados A idade média foi 55 ± 8 anos, e 52,3% dos pacientes eram homens. O VGE médio foi 111mL (86-144), e a prevalência de escore de CC igual a zero foi 55%. Nas análises multivariadas, um VGE mais alto relacionou-se com sexo feminino, idade mais avançada, circunferência da cintura, e triglicerídeos (p<0,001 para todos). Um VGE mais alto foi associado com pior função endotelial: em comparação ao primeiro quartil, os valores de odds ratio para a amplitude de pulso basal foram (q2=1,22; IC95% 1,07-1,40; q3=1,50, IC95% 1,30-1,74; q4=1,50, IC95% 1,28-1,79) e para a razão de tonometria arterial periférica foram (q2=0,87; IC95% 0,81-0,95; q3=0,86, IC95% 0,79-0,94; q4=0,80, IC95% 0,73-0,89), mas não com escore de CC maior que zero. Conclusão Um VGE mais alto associou-se com comprometimento da função endotelial, mas não com escore de CC. Os resultados sugerem que o VGE esteja relacionado ao desenvolvimento de DAC por uma via diferente da via do CC, possivelmente pela piora da disfunção endotelial e doença microvascular.

Abstract Background The increase in epicardial fat volume (EFV) is related to coronary artery disease (CAD), independent of visceral or subcutaneous fat. The mechanism underlying this association is unclear. Coronary artery calcium (CAC) score and endothelial dysfunction are related to coronary events, but whether EFV is related to these markers needs further clarification. Objectives To evaluate the association between automatically measured EFV, cardiovascular risk factors, CAC, and endothelial function. Methods In 470 participants from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil) with measures of EFV, CAC score and endothelial function, we performed multivariable models to evaluate the relation between cardiovascular risk factors and EFV (response variable), and between EFV (explanatory variable) and endothelial function variables or CAC score. Two-sided p <0.05 was considered statistically significant. Results Mean age was 55 ± 8 years, 52.3% of patients were men. Mean EFV was 111mL (IQ 86-144), and the prevalence of CAC score=0 was 55%. In the multivariable analyses, increased EFV was related to female sex, older age, waist circumference, and triglycerides (p<0.001 for all). Higher EFV was associated with worse endothelial function: as compared with the first quartile, the odds ratio for basal pulse amplitude were (q2=1.22, 95%CI 1.07-1.40; q3=1.50, 95%CI 1.30-1.74; q4=1.50, 95%CI 1.28-1.79) and for peripheral arterial tonometry ratio were (q2=0.87, 95%CI 0.81-0.95; q3=0.86, 95%CI 0.79-0.94; q4=0.80, 95%CI 0.73-0.89), but not with CAC score>0. Conclusion Higher EFV was associated with impaired endothelial function, but not with CAC. The results suggest that EFV is related to the development of CAD through a pathway different from the CAC pathway, possibly through aggravation of endothelial dysfunction and microvascular disease.

Avaliação do Impacto da Implantação de um Sistema de Ambulância Pré-Hospitalar sobre Mortalidade por Infarto Agudo do Miocárdio em um País em Desenvolvimento / Assessment of the Impact of the Implementation of a Pre-Hospital Ambulance System on Acute Myocardial Infarction Mortality in a Developing Country

Resumo Fundamento O manejo efetivo de pacientes com infarto agudo do miocárdio (IAM) é tempo-dependente. Objetivos Avaliar os impactos da implantação do atendimento pré-hospitalar nas taxas de internação e de mortalidade associadas ao IAM. Métodos Estudo retrospectivo e ecológico, que avaliou dados do Sistema Único de Saúde, de todos os 853 municípios de Minas Gerais, de 2008 a 2016. A assimetria excessiva da mortalidade geral e intra-hospitalar por IAM foi suavizada usando o método empírico de Bayes. Este estudo avaliou a relação entre o do Serviço de Atendimento Médico de Urgência (SAMU) em cada município e os seguintes 3 desfechos: taxa de mortalidade geral por IAM, taxa de mortalidade intra-hospitalar por IAM e taxa de internação por IAM, utilizando o modelo hierárquico de Poisson. As taxas foram corrigidas pela estrutura etária e destendenciadas pela sazonalidade e influências temporais. Foi adotado um intervalo de confiança de 95%. Resultados As taxas de mortalidade por IAM diminuíram ao longo do estudo, em média 2% por ano, com variação sazonal. A mortalidade intra-hospitalar também apresentou tendência de queda, de 13,81% em 2008 para 11,43% em 2016. A implantação do SAMU foi associada à diminuição da mortalidade por IAM ( odds ratio [OR] = 0,967, IC 95% 0,936 a 0,998) e mortalidade intra-hospitalar por IAM (OR = 0,914, IC 95% 0,845 a 0,986), sem associação significativa com internações (OR 1,003, IC 95% 0,927 a 1,083). Conclusão A implantação do SAMU esteve associada a uma redução modesta, mas significativa, na mortalidade intra-hospitalar. Esse achado reforça o papel fundamental do cuidado pré-hospitalar no cuidado do IAM e a necessidade de investimentos nesse serviço para melhorar os desfechos clínicos em países de baixa e média renda.

Abstract Background The effective management of patients with acute myocardial infarction (AMI) is time-dependent. Objectives To assess the impacts of the implementation of prehospital care on admission rates and mortality associated with AMI. Methods Retrospective, ecological study, which assessed data from the Brazilian Universal Health System, from all 853 municipalities of Minas Gerais, from 2008 to 2016. Excessive skewness of general and in-hospital mortality rates was smoothed using the empirical Bayes method. This study assessed the relationship between Mobile Emergency Care Service (SAMU) in each municipality and the following 3 outcomes: mortality rate due to AMI, AMI in-hospital mortality, and AMI hospitalization rate, using the Poisson hierarchical model. Rates were corrected by age structure and detrended by seasonality and temporal influences. A confidence interval of 95% was adopted. Results AMI mortality rates decreased throughout the study, on average 2% per year, with seasonal variation. AMI in-hospital mortality also showed a decreasing trend, from 13.81% in 2008 to 11.43% in 2016. SAMU implementation was associated with decreased AMI mortality (odds ratio [OR] = 0.967, 95% confidence interval [CI] 0.936 to 0.998) and AMI in-hospital mortality (OR = 0.914, 95% CI 0.845 to 0.986), with no relation with hospitalizations (OR = 1.003, 95% CI 0.927 to 1.083). Conclusion SAMU implementation was associated with a modest but significant decrease in AMI in-hospital mortality. This finding reinforces the key role of prehospital care in AMI care and the need for investments on this service to improve clinical outcomes in low- and middle-income countries.

Carga de Doenças Cardiovasculares Atribuível aos Fatores de Risco nos Países de Língua Portuguesa: Dados do Estudo "Global Burden of Disease 2019" / Burden of Cardiovascular Diseases Attributable to Risk Factors in Portuguese-Speaking Countries: Data from the "Global Burden of Disease 2019" Study

Resumo Fundamento: O impacto dos fatores de risco (FR) sobre a morbimortalidade por doença cardiovascular (DCV) na maioria dos países de língua portuguesa (PLP) é pouco conhecido. Objetivo: Analisar a morbimortalidade por DCV atribuível aos FR e sua variação nos PLP de 1990 a 2019, a partir de estimativas do estudo Global Burden of Disease (GBD) 2019. Métodos: Avaliamos as mudanças nos FR ocorridas no período, as taxas de mortalidade e os anos de vida perdidos por incapacidade (DALYs), padronizados por idade, entre 1990 e 2019. Realizou-se a correlação entre a variação percentual das taxas de mortalidade e o índice sociodemográfico (SDI) de cada PLP pelo método de Spearman. O valor p<0,05 foi considerado estatisticamente significativo. Resultados: A pressão arterial sistólica (PAS) elevada foi o principal fator de risco para mortalidade e DALY por DCV para todos os PLP. A mortalidade por DCV mostrou uma tendência de redução em 2019, maior em Portugal (-66,6%, IC95% -71,0 - -61,2) e no Brasil (-49,8%, IC95% -52,5 - -47,1). Observou-se tendência à correlação inversa entre SDI e a variação percentual da mortalidade, que foi significativa para os riscos dietéticos (r=-0,70, p=0,036), colesterol LDL elevado (r=-0,77, p=0,015) e PAS elevada (r=-0,74, p=0,023). Conclusões: Além da PAS, os FR dietéticos e metabólicos justificaram uma maior variação da carga de DCV, correlacionada com o SDI nos PLP, sugerindo a necessidade de adoção de políticas de saúde adaptadas à realidade de cada país, visando a redução de seu impacto sobre a população.

Abstract Background: The impact of risk factors (RF) on morbidity and mortality from cardiovascular disease (CVD) for most Portuguese-speaking countries (PSC) is little known. Objectives: We aimed to analyze the morbidity and mortality from CVD attributable to RF and its variation, from 1990 to 2019, in PSC, based on estimates from the Global Burden of Disease (GBD) 2019 study. Methods: We evaluated changes in cardiovascular RF, mortality rates and age-standardized disability-adjusted life years (DALYs) between 1990 and 2019. The correlation between percentage changes in mortality rates and the sociodemographic index (SDI) of each PSC was evaluated by the Spearman method. A p-value <0.05 was considered statistically significant. Results: Elevated systolic blood pressure (SBP) was the main RF for mortality and DALYs for CVD for all PSC. Mortality from CVD showed a downward trend in 2019, more accentuated in Portugal (-66.6%, 95%CI -71.0 - -61.2) and in Brazil (-49.8%, 95%CI -52.5 - -47.1). There was a trend towards an inverse correlation between SDI and the percent change in mortality, which was significant for dietary risks (r=-0.70, p=0.036), high LDL cholesterol (r=-0.77, p=0.015) and high SBP (r=-0.74, p=0.023). Conclusions: In addition to SBP, dietary and metabolic RF justified a greater variation in the burden of CVD correlated with SDI in the PSC, suggesting the need to adopt health policies adapted to the reality of each country, aiming to reduce their impact on population.

Parâmetros Ecocardiográficos Simples são Fortes Preditores de Risco Cardiovascular em Indivíduos Assintomáticos: Coorte Elsa-Brasil / Simple Echocardiographic Parameters are Strong Predictors of the Cardiovascular Risk in Asymptomatic Individuals: Elsa-Brasil Cohort

Resumo Fundamento vários estudos avaliam alterações ecocardiográficas como preditores de risco cardiovascular; entretanto, nenhum associa risco cardiovascular global com alterações ecocardiográficas em brasileiros. Objetivo Este estudo avalia a associação entre risco cardiovascular global (ASCVD) e achados ecocardiográficos como hipertrofia ventricular esquerda (HVE), disfunção diastólica (DDVE) e aumento do volume do átrio esquerdo (AE). Métodos A população foi composta por participantes do ELSA-Brasil que realizaram ecocardiografia entre 2008 e 2010 (n = 2.973). Eram assintomáticos e não tinham história de doença cardiovascular (DCV). O escore ASCVD foi calculado em dois períodos: 2008-2010 e 2012-2014. Razões de prevalência (RP) foram estimadas com intervalos de confiança (IC) de 95%. Resultados Evidenciou-se associação entre alterações ecocardiográficas e alto risco cardiovascular global (escore ASCVD ≥ 7,5) nos dois períodos do estudo, separadamente. O risco global combinado (baixo risco no primeiro período e alto risco no segundo período) teve associação significativa apenas com DDVE (RP = 3,68; IC 95%: 2,63-5,15) e HVE (RP = 2,20; IC 95%: 1,62-3,00). Conclusão Alterações ecocardiográficas (DDVE, HVE e aumento do volume do AE) são preditores independentes de risco cardiovascular em adultos brasileiros sem DCV prévias.

Abstract Background Several studies have evaluated echocardiographic abnormalities as predictors of cardiovascular risk; however, none have associated the global cardiovascular risk with echocardiographic abnormalities in the Brazilian population. Objective This study evaluates the association between the global cardiovascular risk (ASCVD score) and three echocardiographic abnormalities: left ventricular hypertrophy (LVH), left ventricular diastolic dysfunction (LVDD), and increased left atrium (LA) volume. Methods The study population was composed of participants from ELSA-Brasil who underwent echocardiography between 2008 and 2010 (n = 2973). They were asymptomatic and had no history of cardiovascular disease. The ASCVD score was calculated in two periods: 2008-2010 and 2012-2014. Prevalence ratios (PR) were estimated with 95% confidence intervals (CI). Results There is an association between echocardiographic abnormalities and high global cardiovascular risk (ASCVD score ≥ 7.5) in both study periods, separately. The combined global risk (low risk in the first period and high risk in the second period) was significantly associated only with LVDD (PR = 3.68, CI 95% 2.63-5.15) and LVH (PR = 2.20, 95% CI 1.62-3.00). Conclusion Echocardiographic abnormalities (LVDD, LVH, and increased LA volume) are independent predictors of cardiovascular risk in Brazilian adults.

Testes Ergométricos em Pacientes com Anemia Falciforme: Segurança, Viabilidade e Possíveis Implicações no Prognóstico / Exercise Testing In Patients with Sickle Cell Disease: Safety, Feasibility and Potential Prognostic Implication

Resumo Fundamento Pacientes com anemia falciforme (AF) têm risco aumentado de complicações cardiovasculares. O teste ergométrico é usado como marcador de prognóstico em uma série de doenças cardiovasculares. Entretanto, há uma escassez de evidências sobre exercícios em pacientes com AF, especialmente em relação à sua segurança, viabilidade e possível função prognóstica. Objetivos Usamos o teste em esteira máximo para determinar a segurança e a viabilidade do teste ergométrico em pacientes com AF. Além disso, os fatores associados à duração do exercício, bem como o impacto das alterações causadas pelo exercício em resultados clínicos, também foram avaliados. Métodos 113 pacientes com AF que passaram pelo teste ergométrico e por uma avaliação cardiovascular abrangente incluindo um ecocardiograma e os níveis do peptídeo natriurético do tipo B (BNP). O desfecho de longo prazo foi uma combinação de eventos incluindo morte, crises álgicas graves, síndrome torácica aguda ou internações hospitalares por outras complicações associadas â doença falciforme. A análise de regressão de Cox foi realizada para identificar as variáveis associadas ao resultado. Um p valor <0,05 foi considerado estatisticamente significativo. Resultados A média de idade foi de 36 ± 12 anos (intervalo, 18-65 anos), e 62 pacientes eram do sexo feminino (52%). A presença de alterações isquêmicas ao esforço e resposta pressórica anormal ao exercício foram detectadas em 17% e 9 % da´população estudada respectivamente. Dois pacientes apresentaram crise álgica com necessidade de internação hospitalar no período de 48 horas da realização do exame. Fatores associados à duração do exercício foram idade, sexo, velocidade máxima de regurgitação tricúspide (RT), e relação E/e', após a padronização quanto aos marcadores da gravidade da doença. Durante o período médio de acompanhamento de 10,1 meses (variando de 1,2 a 26), 27 pacientes (23%) apresentaram desfechos clínicos adversos. Preditores independentes de eventos adversos foram a concentração de hemoglobina, velocidade do fluxo transmitral tardio (onda A), e a resposta da PA ao exercício. Conclusões A realização de testes ergométricos em pacientes com AF, clinicamente estáveis, é viável. A duração do exercício estava associada à função diastólica e a pressão arterial pulmonar. A resposta anormal da PA foi um preditor independente de eventos adversos.

Abstract Background Patients with sickle cell disease (SCD) are at increased risk for cardiovascular complications. Exercise testing is used as a prognostic marker in a variety of cardiovascular diseases. However, there is a lack of evidence on exercise in SCD patients, particularly regarding its safety, feasibility, and possible prognostic role. Objectives We used the maximal treadmill test to determine safety and feasibility of the exercise testing in SCD patients. Additionally, the factors associated with exercise duration, as well as the impact of exercise-induced changes on clinical outcome, were also assessed. Methods One-hundred thirteen patients with SCD, who underwent exercise testing, were prospectively enrolled. A comprehensive cardiovascular evaluation, including echocardiography and B-type natriuretic peptide (BNP) levels, were obtained. The long-term outcome was a composite endpoint of death, severe acute painful episodes, acute chest syndrome, or hospitalization for other SCD-related complications. Cox regression analysis was performed to identify the variables associated with the outcome. A p-value<0.05 was considered to be statistically significant. Results The mean age was 36 ± 12 years (range, 18-65 years), and 62 patients were women (52%). Ischemic electrocardiogram and abnormal blood pressure (BP) response to exercise were detected in 17% and 9%, respectively. Two patients experienced pain crises within 48 hours that required hospitalization. Factors associated with exercise duration were age, sex, tricuspid regurgitation (TR) maximal velocity, and E/e' ratio, after adjustment for markers of disease severity. During the mean follow-up of 10.1 months (ranging from 1.2 to 26), the endpoint was reached in 27 patients (23%). Independent predictors of adverse events were hemoglobin concentration, late transmitral flow velocity (A wave), and BP response to exercise. Conclusions Exercise testing in SCD patients who were clinically stable is feasible. Exercise duration was associated with diastolic function and pulmonary artery pressure. Abnormal BP response was an independent predictor of adverse events.