Acute Myocardial Infarction and Percutaneous Coronary Intervention: What does the Epidemiological Data of the Last Years Indicate?

Abstract Background: ST-segment elevation acute myocardial infarction (STEMI) is a pathological process that involves cardiac muscle tissue death. Intravenous thrombolysis with fibrinolytics or primary percutaneous coronary intervention (PCI), an invasive technique, can be performed for tissue revascularization. PCI has been preferred as compared to non-invasive methods, although few studies have described its use in Brazil. Objectives: The aim of the present study was to analyze data on the use of primary PCI and investigate the relevance of hospitalizations for the treatment of STEMI in the country. Methods: A descriptive, cross-sectional analysis of data from the Brazilian Unified Health system (SUS) Department of Informatics (DATASUS) from 2010 to 2019 was conducted. Results: Hospitalizations for STEMI represented 0.6% of all hospital admissions in Brazil in the analyzed period, 0.9% of hospital costs, and 2.1% of deaths. The number of hospitalizations due to STEMI was 659,811, and 82,793 for PCIs. Length of hospital stay was 36.0% shorter and mortality rate was 53.3% lower in PCI. The mean cost of PCI was 3.5-fold higher than for treatment of STEMI. Conclusions: Data on hospitalizations for STEMI treatment in Brazil revealed high hospitalization and mortality rates, elevated costs, and long hospital stay. Although primary PCI is a more expensive and less used technique than other methods, it can reduce the length of hospital stay and mortality in the treatment of STEMI.

Estratégias de Revascularização em Doentes com Infarto Agudo do Miocárdio em Choque Cardiogênico - Resultados do Registo Português de Síndromes Coronárias Agudas / Revascularization Strategies in Patients with Acute Myocardial Infarction and Cardiogenic Shock: Results from the Portuguese Registry on Acute Coronary Syndromes

Resumo Fundamento: Em doentes com infarto agudo do miocárdio (IAM), choque cardiogênico (CC) e doença multivaso (DMV) persistem dúvidas sobre a intervenção nas artérias não responsáveis. Objetivos: 1) caracterizar a amostra de doentes com IAM, CC e DMV incluídos no Registo Nacional Português de Síndromes Coronárias Agudas (RNSCA); 2) comparar os eventos associados a diferentes estratégias de revascularização; e 3) identificar preditores de mortalidade intra-hospitalar nesta amostra. Métodos: Estudo observacional retrospetivo de doentes com IAM, CC e DMV incluídos no RNSCA entre 2010 e 2018. Compararam-se duas estratégias de revascularização: completa durante o procedimento índice (grupo 1); e completa diferida ou incompleta durante o internamento (grupo 2-3). O endpoint primário foi a ocorrência de reinfarto ou morte intra-hospitalar. A significância estatística foi definida por um valor p < 0,05. Resultados: Identificaram-se 127 doentes com IAM, CC e DMV (18,1% no grupo 1 e 81,9% no grupo 2-3), com idade média de 70 ± 12 anos e 92,9% com IAM com supradesnivelamento do segmento ST. O endpoint primário ocorreu em 47,8% dos doentes do grupo 1 e em 37,5% do grupo 2-3 (p = 0,359). As taxas de mortalidade intra-hospitalar, reinfarto, acidente vascular cerebral e hemorragia major foram também semelhantes nos dois grupos. Os preditores de mortalidade intra-hospitalar nesta amostra foram a presença na admissão de disfunção ventricular esquerda (OR 16,8), bloqueio completo de ramo direito (OR 7,6) e anemia (OR 5,2), (p ≤ 0,02). Conclusões: Entre os doentes com IAM, CC e DMV, incluídos no RNSCA, não se verificou diferença significativa entre revascularização completa no evento índex e completa diferida ou incompleta durante o internamento, relativamente à ocorrência de morte intra-hospitalar ou reinfarto. (Arq Bras Cardiol. 2021; 116(5):867-876)

Abstract Background: In patients with acute myocardial infarction (MI), cardiogenic shock (CS), and multivessel disease (MVD) questions remain unanswered when it comes to intervention on non-culprit arteries. Objective: This article aims to 1) characterize patients with MI, CS and MVD included in the Portuguese Registry on Acute Coronary Syndromes (ProACS); 2) compare different revascularization strategies in the sample; 3) identify predictors of in-hospital mortality among these patients. Methods: Observational retrospective study of patients with MI, CS and MVD included in the ProACS between 2010 and 2018. Two revascularization strategies were compared: complete during the index procedure (group 1); and complete or incomplete during the index hospitalization (groups 2-3). The primary endpoint was a composite of in-hospital death or MI. Statistical significance was defined by a p-value <0.05. Results: We identified 127 patients with MI, CS, and MVD (18.1% in group 1, and 81.9% in groups 2-3), with a mean age of 7012 years, and 92.9% of the sample being diagnosed with ST-segment elevation MI (STEMI). The primary endpoint occurred in 47.8% of the patients in group 1 and 37.5% in group 2-3 (p = 0.359). The rates of in-hospital death, recurrent MI, stroke, and major bleeding were also similar. The predictors of in-hospital death in this sample were the presence of left ventricle systolic dysfunction on admission (OR 16.8), right bundle branch block (OR 7.6), and anemia (OR 5.2) (p ≤ 0.02 for both). Conclusions: Among patients with MI, CS, and MVD included in the ProACS, there was no significant difference between complete and incomplete revascularization during the index hospitalization regarding the occurrence of in-hospital death or MI. (Arq Bras Cardiol. 2021; 116(5):867-876)

Comparação entre Dois Escores de Risco quanto à Predição de Obstrução Microvascular Coronariana durante a Intervenção Percutânea Primária / The Comparison between Two Risk Scores as for the Prediction of Coronary Microvascular Obstruction during Primary Percutaneous Intervention

Resumo Fundamento: Para pacientes com infarto do miocárdio com elevação do segmento ST (IAMCST) que sofrem de obstrução coronariana microvascular funcional e estrutural (OCM) subsequente, nenhuma abordagem terapêutica específica e definitiva de atenuação foi comprovada como válida em testes de larga escala atuais, o que destaca a necessidade de abordar seu reconhecimento precoce. Objetivos: Este estudo teve como objetivo comparar o desempenho de dois escores de risco clínico com uma medida objetiva de OCM durante intervenção coronária percutânea (ICP) em casos de IAMCST Métodos: A medição do índice de resistência microcirculatória (IRM) foi realizada e os parâmetros clínicos e angiográficos basais também foram registrados. Os pacientes foram divididos em entre os grupos OM (obstrução microvascular) e NOM (não-obstrução microvascular), de acordo com o valor de IRM pós-procedimento. O risco de OCM foi avaliado para todos os participantes pelos escores preditivos SAK e ATI, respectivamente. Cada sistema foi calculado somando-se as pontuações de todas as variáveis. As curvas de características do operador receptor (ROC) e a área sob a curva (AUC) de dois modelos de risco foram utilizadas para avaliar o desempenho discriminatório. Um ecocardiograma foi realizado sete dias após o procedimento para avaliar a fração de ejeção do ventrículo esquerdo (FEVE). Um valor P bicaudal de <0,05 foi considerado estatisticamente significativo. Resultados: Entre os 65 pacientes elegíveis com IAMCST, 48 foram alocados no grupo NOM e 17 no grupo OM, com uma incidência de OCM de 26,15%. Não houve diferença significativa na AUC entre os dois escores. A FEVE avaliada para o grupo NOM foi maior do que para o grupo OM. Conclusão: Os escores SAK e ATI tiveram bom desempenho para estimar o risco de OCM após ICP primário para pacientes com IAMCST.

Abstract Background: For patients with ST-segment elevation myocardial infarction (STEMI) that are suffering from subsequent coronary microvascular functional and structural obstruction (CMVO), no specific and definitive therapeutic approaches of attenuation have been proven valid in up-to-date large-scale tests, which highlights the urge to address its early recognition. Objectives: This study aimed to compare the performance of two clinical risk scores with an objective measurement of CMVO during percutaneous coronary intervention (PCI) with STEMI. Methods: The Index of Microcirculatory Resistance (IMR) measurement was conducted and the baseline clinical and angiographic parameters were also recorded. The patients were divided into MO (Microvascular obstruction) or NMO (Non-microvascular obstruction) groups according to the post-procedure IMR value. The CMVO risk was evaluated for all participants by SAK and ATI predictive scores, respectively. Each system was calculated by summing the scores of all variables. The receiver operator characteristic (ROC) curves and the area under the curve (AUC) of two risk models were used to evaluate the discriminatory performance. An echocardiography was performed seven days after the procedure to evaluate left ventricular ejection fraction (LVEF). A two-sided P-value of <0.05 was considered statistically significant. Results: Among the 65 eligible STEMI patients, 48 patients were allocated in the NMO group and 17 in the MO group, with a CMVO incidence of 26.15%. There was no significant difference in the AUC between both scores. The LVEF evaluated for the NMO group was higher than that of MO group. Conclusion: Both SAK and ATI scores performed well in estimating CMVO risk after primary PCI for STEMI patients.

Influência da localização geográfica no acesso às terapias de reperfusão e mortalidade de pacientes com IAMcSST em Sergipe: registro VICTIM / Influence of geographical location on access to reperfusion therapies and mortality of patients with STEMI in Sergipe: VICTIM register

Resumo Fundamento A concentração de serviços de alta complexidade em Aracaju/SE pode proporcionar disparidade na qualidade assistencial para os pacientes do SUS com infarto agudo do miocárdio com supradesnivelamento do segmento ST (IAMcSST) cujos sintomas se iniciaram em outras regiões de saúde do estado. Objetivo Avaliar disparidades no acesso às terapias de reperfusão e mortalidade em 30 dias, entre pacientes com IAMcSST, usuários do SUS, em cada uma das 7 regiões de saúde em Sergipe. Métodos Foram avaliados 844 pacientes com IAMcSST no período de 2014 a 2018 atendidos pelo único hospital com capacidade de ofertar intervenção coronariana percutânea (ICP) primária para usuários do SUS no estado de Sergipe. Os pacientes foram divididos em 7 grupos de acordo com o local de início dos sintomas e obedecendo a divisão já existente das regiões de saúde do Estado. Para comparação entre grupos, foi considerada diferença significativa quando p < 0,05. Resultados Do total de 844 pacientes vítimas de IAMcSST e transferidos ao hospital com ICP que atende pacientes do SUS, 386 pacientes (45,8%) realizaram angioplastia primária. A taxa média do uso de fibrinolítico foi de 2,6%, não havendo diferenças entre as regiões. O tempo médio total de chegada ao hospital com ICP foi de 21h55' com mediana de 10h22' (6h30' - 22h52'). A mortalidade total em 30 dias foi 12,8%, mas sem diferenças entre as regiões, mesmo quando ajustada para idade e sexo. Conclusões Este estudo revela que os fibrinolíticos são subutilizados em todo o estado e que existe um atraso significativo no acesso ao hospital com ICP, em todas as regiões de saúde de Sergipe.

Abstract Background The concentration of high-complexity services in Aracaju, Sergipe can impose certain disparity in the quality of care for the patients with ST-segment elevation acute myocardial infarction (STEMI) (STEMI) who receive care from Brazil's Unified Health System (SUS, acronym in Portuguese) and whose symptoms started in other health regions of the state. Objective To evaluate disparities in access to reperfusion therapies and 30-day mortality, among patients with STEMI, who were users of SUS, in each of the 7 health regions of Sergipe. Methods A total of 844 patients with STEMI in the period from 2014 to 2018, assisted by the only hospital with the capacity to offer primary percutaneous coronary intervention (PPCI) to SUS users in the state of Sergipe, were evaluated. The patients were divided into 7 groups according to the location at the onset of symptoms, following the existing division of health regions in the state. For comparison between groups, a significant difference was considered when p < 0.05. Results Of the total of 844 patients suffering from STEMI who were transferred to the hospital with PPCI that serves SUS patients, 386 patients (45.8%) underwent primary angioplasty. The mean rate of fibrinolytic use was 2.6%, with no differences between the regions. The mean total time of arrival to the hospital with PPCI was 21 hours and 55 minutes, with a median of 10 hours and 22 minutes (6 hours and 30 minutes to 22 hours and 52 minutes). Total 30-day mortality was 12.8%, but without differences between the regions, even when adjusted for age and sex. Conclusions This study reveals that fibrinolytics are underused throughout the state and that there is a significant delay in access to the hospital with PPCI, in all health regions of Sergipe.

Acesso à Terapia de Reperfusão e Mortalidade em Mulheres com Infarto Agudo do Miocárdio com Supradesnivelamento do Segmento ST: Registro VICTIM / Access to Reperfusion Therapy and Mortality in Women with ST-Segment-Elevation Myocardial Infarction: VICTIM Register

Resumo Fundamento: A reperfusão miocárdica é parte fundamental do tratamento para infarto agudo do miocárdio com supradesnivelamento de ST (IAMCSST) e é responsável por reduzir morbimortalidade no paciente acometido. No entanto, as taxas de reperfusão são geralmente mais baixas e as taxas de mortalidade mais altas em mulheres que em homens. Objetivos: Avaliar a prevalência do uso de terapias de reperfusão em mulheres e homens com IAMCSST nos hospitais com capacidade para realizar intervenção coronariana percutânea (ICP) no estado de Sergipe. Métodos: Trata-se de estudo transversal que utilizou dados do Registro VICTIM. Foram avaliados pacientes com diagnóstico de IAMCSST admitidos nos quatro hospitais com capacidade para realizar ICP no estado de Sergipe, sendo um público e três privados, no período de dezembro de 2014 a junho de 2018. Foi aplicada análise multivariada com modelo ajustado utilizando mortalidade como variável dependente. Em todas as análises, o nível de significância adotado foi de 5% (p<0,05). Resultados: Foram incluídos 878 voluntários com diagnóstico confirmado de IAMCSST, dos quais 33,4% eram mulheres. Apenas 53,3% dos pacientes foram submetidos à reperfusão miocárdica (134 mulheres versus 334 homens). A fibrinólise foi realizada somente em 2,3% de todos os pacientes (1,7% das mulheres versus 2,6% dos homens; p=0,422). Nas mulheres, a taxa de ICP primária foi menor (44% versus 54,5%; p=0,003) e a mortalidade hospitalar foi maior (16,1% versus 6,7%; p<0,001) que nos homens. Conclusão: As mulheres apresentam taxas significativamente menores de ICP primária e significativamente maiores de mortalidade hospitalar que os homens. A taxa de reperfusão em ambos os gêneros foi baixa e houve nítida subutilização de agentes trombolíticos.

Abstract Background: Myocardial reperfusion is a fundamental part of the treatment for ST elevation myocardial infarction (STEMI) and is responsible for reducing morbidity and mortality in affected patients. However, reperfusion rates are usually lower and mortality rates higher in women compared to men. Objectives: To evaluate the prevalence of the use of reperfusion therapies among women and men with STEMI in hospitals where percutaneous coronary intervention (PCI) is available in the state of Sergipe. Methods: This is a cross-sectional study that used data from the VICTIM Register. Patients diagnosed with STEMI admitted to the four hospitals (one public and three private) where PCI is available in the state of Sergipe were evaluated, from December 2014 to June 2018. A multivariate analysis with adjusted model using mortality as a dependent variable was made. In all analyses, the level of significance adopted was 5% (p < 0.05). Results: A total of 878 volunteers with a confirmed diagnosis of STEMI, of which 33.4% were women, were included in the study. Only 53.3% of the patients underwent myocardial reperfusion (134 women versus 334 men). Fibrinolysis was performed only in 2.3% of all patients (1.7% of women versus 2.6% of men; p = 0.422). The rate of primary PCI was lower (44% versus 54.5%; p = 0.003) and hospital mortality was higher (16.1% versus 6.7%; p < 0.001) in women than in men. Conclusion: Women have significantly lower rates of primary PCI and higher hospital mortality. Reperfusion rates were low in both sexes and there was a clear underutilization of thrombolytic agents.

O Escore Gensini e a Carga Trombótica Adicionam Valor Preditivo ao Escore SYNTAX na Detecção de No-Reflow após Infarto do Miocárdio / Gensini Score and Thrombus Burden Add Predictive Value to the SYNTAX Score in Detecting No-Reflow after Myocardial Infarction

Resumo Fundamento O fenômeno de no-reflow após a intervenção coronária percutânea está associado a um pior prognóstico em pacientes com infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST). O escore SYNTAX é um bom preditor de no-reflow. Objetivo Nosso objetivo foi avaliar se a carga aterosclerótica (escore Gensini) e a carga trombótica na artéria coronária culpada melhorariam a capacidade do escore SYNTAX para detectar o no-reflow. Métodos Neste estudo coorte prospectivo, foram estudados pacientes com IAMCSST consecutivos que se apresentaram dentro de 12 horas a partir do início dos sintomas. O no-reflow foi definido como fluxo TIMI < 3 ou fluxo TIMI =3 mas grau de blush miocárdico (myocardial blush grade) < 2. A carga trombótica foi quantificada de acordo com o grau TIMI de trombo (0 a 5). Resultados Foram incluídos 481 pacientes no estudo, com idade média de 61±11 anos. O fenômeno de no-reflow ocorreu em 32,8% dos pacientes. O escore SYNTAX (OR=1,05, IC95% 1,01-1,08, p<0,01), a carga trombótica (OR=1,17, IC95% 1,06-1,31, p<0,01), e o escore Gensini (OR=1,37, IC95% 1,13-1,65, p<0,01) foram preditores independentes do no-reflow. Os escores combinados apresentaram uma maior área sob a curva quando comparados ao escore SYNTAX isolado (0,78 [0,73-0,82] vs 0,73 [0,68-0,78], p=0,03). A análise da melhora da reclassificação líquida (NRI) categórica (0,11 [0,01-0,22], p=0,02) e contínua (NRI>0) (0,54 [0,035-0,73], p<0.001) mostrou melhora na capacidade preditiva do no-reflow no modelo combinado, com melhora da discriminação integrada (IDI) de 0,07 (0,04-0,09, p<0,001). Conclusões Nossos achados sugerem que, em pacientes com IAMCSST submetidos à intervenção coronária percutânea, a carga aterosclerótica e a carga trombótica na artéria culpada adicionam valor preditivo ao escore SYNTAX na detecção do fenômeno no-reflow. (Arq Bras Cardiol. 2021; [online].ahead print, PP.0-0)

Abstract Background No-reflow after percutaneous coronary intervention is associated with poor prognosis in patients with ST-segment elevation myocardial infarction (STEMI). SYNTAX score is a good predictor of no-reflow. Objective We aimed to evaluate whether atherosclerotic burden (Gensini score) and thrombus burden in the culprit coronary artery would improve the ability of the SYNTAX score to detect no-reflow. Methods In this prospective cohort study, consecutive patients with STEMI who presented within 12 h of onset of symptoms were selected for this study. No-reflow was defined as TIMI flow < 3 o r TIMI flow = 3 but myocardial blush grade <2. Thrombus burden was quantified according to the TIMI thrombus grade scale (0 to 5). Results A total of 481 patients were included (mean age 61±11 years). No-reflow occurred in 32.8%. SYNTAX score (OR=1.05, 95%CI 1.01-1.08, p<0.01), thrombus burden (OR=1.17, 95%CI 1.06-1.31, p<0.01), and Gensini score (OR=1.37, 95%CI 1.13-1.65, p<0.01) were independent predictors of no-reflow. Combined scores had a larger area under the curve than the SYNTAX score alone (0.78 [0.73-0.82] vs 0.73 [0.68-0.78], p=0.03). Analyses of both categorical (0.11 [0.01-0.22], p=0.02), and continuous net reclassification improvement (NRI>0) (0.54 [0.035-0.73], p<0.001) showed improvement in the predictive ability of no-reflow in the combined model, with integrated discrimination improvement (IDI) of 0.07 (0.04-0.09, p<0.001). Conclusions Our findings suggest that, in patients with STEMI undergoing percutaneous coronary intervention, atherosclerotic burden and thrombus burden in the culprit artery add predictive value to the SYNTAX score in detecting the no-reflow phenomenon. (Arq Bras Cardiol. 2021; [online].ahead print, PP.0-0)

Valor prognóstico da amplitude de distribuição das hemácias em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronariana percutânea / Prognostic value of red cell distribution width in ST-segment elevation myocardium infarction patients undergoing percutaneous coronary intervention

Objetivo: Determinar os valores da amplitude de distribuição das hemácias em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronária percutânea primária e avaliar sua associação com resultados adversos. Métodos: Os níveis de amplitude de distribuição das hemácias foram medidos em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST antes da intervenção coronária percutânea primária e divididos conforme valor das amplitudes de distribuição das hemácias. Após a alta hospitalar, os pacientes foram acompanhados por até 3 anos para a ocorrência de eventos cardiovasculares adversos maiores e mortalidade a longo prazo. Resultados: Foram incluídos 893 pacientes com idade média de 60,7 (±12,5) anos, e 66,3% eram do sexo masculino. Na análise multivariada, a hemácia permaneceu como preditor independente de mortalidade a longo prazo. A área sob a curva para mortalidade a longo prazo foi de 0,64 (IC95% 0,61-0,67; p<0,0001). Amplitudes de distribuição das hemácias <13,3 tiveram valor preditivo negativo de 87,1% para mortalidade por todas as causas. Conclusão: Um valor elevado de amplitude de distribuição das hemácias é um preditor independente de mortalidade a longo prazo e eventos cardiovasculares adversos maiores em pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST submetidos à intervenção coronária percutânea primária. Amplitudes de distribuição das hemácias baixas têm baixo tem um excelente valor preditivo negativo para mortalidade a longo prazo. (AU)

Objective: To determine red cell distribution width values in ST-elevation acute myocardial infarction patients undergoing primary percutaneous coronary intervention and to evaluate its association with adverse outcomes. Methods: Red cell distribution width levels were measured in ST-segment elevation myocardial infarction patients before primary percutaneous coronary intervention and divided into low and high red cell distribution width. After discharge, patients were followed for up to 3 years for the occurrence of long-term major adverse cardiovascular events and mortality. Results: A total of 893 patientes were with a mean age of 60.7 (±12.5) years, 66.3% were male. In multivariate analysis, the red cell distribution width remained as an independent predictor of long-term mortality. The area under the curve for long-term mortality was 0.64 (95%CI0.61-0.67; p<0.0001). Red cell distribution width<13.3 had a negative predictive value of 87.1% for all-cause mortality. Conclusion: High number of red cell distribution width is an independent predictor of long-term mortality and major adverse cardiovascular events in ST-segment elevation myocardial infarction patients undergoing primary percutaneous coronary intervention. A low number of red cell distribution width has an excellent negative predictive value for long-term mortality. Patients with sustained elevated levels of red cell distribution width have worse outcomes at long-term follow-up. (AU)

Door-to-balloon Time in Cardiovascular Emergency Care in a Hospital of Northern Brazil

Abstract Background The use of an adequate door-to-balloon time (≤ 90 minutes) is crucial in improving the quality of care provided to patients with ST-segment elevation myocardial infarction (STEMI). Objective To determine the door-to-balloon time in the management of STEMI patients in a cardiovascular emergency department in a hospital of northern Brazil. Methods This was a cross-sectional study based on review of medical records. A total of 109 patients with STEMI admitted to the emergency department of a referral cardiology hospital in Pará State, Brazil, between May 2017 and December 2017. Correlations of the door-to-balloon time with length of hospital stay and mortality rate were assessed, as well as whether the time components of the door-to-balloon time affected the delay in performing primary percutaneous coronary intervention. Quantitative variables were analyzed by Spearman correlation and the G test was used for categorical variables. A p<0.05 was set as statistically significant. Results Median door-to-balloon time was 104 minutes. No significant correlation was found between door-to-balloon time and length of hospital stay or deaths, but significant correlations were found between door-to-balloon time and door-to-ECG time (p<0.001) and ECG-to-activation (of an interventional cardiologist) time (p<0.001). Conclusion The door-to-balloon time was longer the recommended and was not correlated with the length of hospital stay or in-hospital mortality. Door-to-ECG time and ECG-to-activation time contributed to the delay in performing the primary percutaneous coronary intervention. Int J Cardiovasc Sci. 2020; [online].ahead print, PP.0-0

Off-hours admission does not impact outcomes in patients undergoing primary percutaneous coronary intervention and with a first medical contact-to-device time within 90 min / 中华医学杂志(英文版)

BACKGROUND@#It remains unclear whether the outcomes of ST-elevation myocardial infarction (STEMI) patients treated with primary percutaneous coronary intervention (PPCI) during off-hours are as favorable as those treated during on-hours, especially those with a first medical contact-to-device (FMC-to-device) time within 90 min. We aimed to determine whether off-hours admission impacted late outcomes in patients undergoing PPCI and with an FMC-to-device time ≤90 min.@*METHODS@#This multicenter retrospective study included 670 STEMI patients who underwent successful PPCI and had an FMC-to-device time ≤90 min from 19 chest pain centers in Beijing from January 2018 to December 2018. Patients were divided into on-hours group and off-hours group based on their arrival time. Baseline characteristics, clinical data, and key time intervals during treatment were collected from the Quality Control & Improvement Center of Cardiovascular Intervention of Beijing by the "Heart and Brain Green Channel" app.@*RESULTS@#Overall, the median age of the patients was 58.8 years and 19.9% (133/670) were female. Of these, 296 (44.2%) patients underwent PPCI during on-hours and 374 (55.8%) patients underwent PPCI during off-hours. Compared with the on-hours group, the off-hours group had a longer FMC-to-device time and fewer patients with FMC-to-device time ≤60 min (P  0.05). According to the Cox regression analyses, off-hours admission was not a predictor of 2-year MACEs (P = 0.788). Similarly, the Kaplan-Meier curves showed that the risks of a MACE, all-cause death, reinfarction, and target vessel revascularization were not significantly different between the two groups (P > 0.05).@*CONCLUSIONS@#This real-world, multicenter retrospective study demonstrated that for STEMI patients who underwent PPCI within 90 min, off-hours admission was safe, with no difference in the risk of 2-year MACEs compared with those with on-hours admission.

Analysis of potential factors contributing to refusal of invasive strategy after ST-segment elevation myocardial infarction in China / 中华医学杂志(英文版)

BACKGROUND@#Reduced application of percutaneous coronary intervention (PCI) is associated with higher mortality rates after ST-segment elevation myocardial infarction (STEMI). We aimed to evaluate potential factors contributing to the refusal of PCI in STEMI patients in China.@*METHODS@#We studied 957 patients diagnosed with STEMI in the emergency departments (EDs) of six public hospitals in China. The differences in baseline characteristics and 30-day outcome were investigated between patients who refused PCI and those who underwent PCI. Multivariable logistic regression was used to evaluate the potential factors associated with refusing PCI.@*RESULTS@#The potential factors contributing to refusing PCI were older than 65 years (odds ratio [OR] 2.66, 95% confidence interval [CI] 1.56-4.52, P 12 h) (OR 3.31, 95% CI 1.83-6.02, P < 0.001) and not being hospitalized in a tertiary hospital (OR 0.45, 95% CI 0.27-0.75, P = 0.002). Compared to men, women were older, were less often married, had a lower BMI and were less often hospitalized in tertiary hospitals.@*CONCLUSIONS@#Patients who were older, had lower economic or social status, and had poorer health status were more likely to refuse PCI after STEMI. There was a sex difference in the potential predictors of refusing PCI. Targeted efforts should be made to improve the acceptance of PCI among patients with STEMI in China.

The acute and long-term outcome of patients with ST segment elevation myocardial infarction concurrent with chronic total occlusion / 中华心血管病杂志

Objective: To evaluate the acute and long-term outcome of patients with ST segment elevation myocardial infarction (STEMI) concurrent with chronic total occlusion (CTO) undergoing primary percutaneous coronary intervention (PCI). Methods: 11 905 STEMI patients from the China Acute Myocardial Infarction Registry were enrolled in this study and divided into CTO group and non-CTO group according to the angiography results of primary PCI. 1∶3 propensity score matching was used to match the patients between the two groups. The primary endpoint was in-hospital mortality and mortality at 1-year post PCI. The secondary endpoint was major adverse cardiovascular events (MACE) including death, re-myocardial infarction, revascularization, heart failure associated readmission, stroke and major bleeding at 1-year post PCI. Results: There were 931 CTO patients (7.8%) in this cohort (male=755 (81.1%), mean age (62.2±11.4 years)). The rest 10 974 patients were STEMI without CTO (male=8 829 (80.5%),mean age (60.0±11.8) years). After propensity score matching, 896 patients were enrolled in CTO group and 2 688 in non-CTO group. In-hospital mortality was significantly higher in the CTO group than in non-CTO group (4.2% vs. 2.4%, P=0.006). The ratio of all cause death, cardiac death, and MACE at 1-year follow up was also significantly higher in the CTO group than in non-CTO group (8.5% vs. 4.4%, P<0.001, 5.3% vs. 2.6%, P=0.001, 35.1% vs. 23.3%, P<0.001, respectively). Multiple regression analysis showed that CTO (HR=1.54, 95%CI 1.06-2.22, P=0.022), advanced age (HR=1.06, 95%CI 1.04-1.08, P<0.001), and previous heart failure history (HR=4.10, 95%CI 1.90-8.83, P<0.001) were independent risk factors of 1-year mortality. Conclusions: The in-hospital and 1-year mortality increased significantly in STEMI patients concurrent with CTO. CTO, advanced age and history of heart failure are independent risk factors of 1-year death among STEMI patients.

Impact of inflammatory reaction levels and culprit plaque characteristics on preprocedural thrombolysis in myocardial infarction flow grade in patients with ST-segment elevation myocardial infarction / 中华心血管病杂志

Objective: To determine the impact of inflammatory reaction levels and the culprit plaque characteristics on preprocedural Thrombolysis in Myocardial Infarction (TIMI) flow grade in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PCI). Methods: The is a retrospective study. A total of 1 268 STEMI patients who underwent pre-intervention optical coherence tomography (OCT) examination of culprit lesion during emergency PCI were divided into 2 groups by preprocedural TIMI flow grade (TIMI 0-1 group (n =964, 76.0%) and TIMI 2-3 group (n =304, 24.0%)). Baseline clinical data of the 2 groups were collected; blood samples were collected for the detection of inflammatory markers such as high sensitivity C-reactive protein (hsCRP), myocardial injury marker, blood lipid, etc.; echocardiography was used to determine left ventricular ejection fraction; coronary angiography and OCT were performed to define the lesion length, diameter stenosis degree of the infarct-related arteries, presence or absence of complex lesions, culprit lesion type, area stenosis degree and vulnerability of culprit plaques. Multivariable logistic regression analysis was performed to identify independent correlation factors. The receiver operating characteristic (ROC) curve of continuous independent correlation factors was analyzed, and the best cut-off value of TIMI 0-1 was respectively determined according to the maximum value of Youden index. Results: The mean age of 1 268 STEMI patients were (57.6±11.4) years old and 923 cases were males (72.8%). Compared with TIMI 2-3 group, the patients in TIMI 0-1 group were older and had higher N-terminal-pro-B-type natriuretic peptide level, lower cardiac troponin I (cTnI) level, lower left ventricular ejection fraction, and higher hsCRP level (5.16(2.06, 11.78) mg/L vs. 3.73(1.51, 10.46) mg/L). Moreover, the hsCRP level of patients in TIMI 0-1 group was higher in the plaque rupture subgroup (all P<0.05). Coronary angiography results showed that compared with TIMI 2-3 group, the proportion of right coronary artery (RCA) as the infarct-related artery was higher, the angiographical lesion length was longer, minimal lumen diameter was smaller, and diameter stenosis was larger in TIMI 0-1 group (all P<0.05). The prevalence of plaque rupture was higher (75.8% vs. 61.2%) in TIMI 0-1 group. Plaque vulnerability was significantly higher in TIMI 0-1 group than that in TIMI 2-3 group with larger mean lipid arc (241.27°±46.78° vs. 228.30°±46.32°), more thin-cap fibroatheroma (TCFA, 72.4% vs. 57.9%), more frequent appearance of macrophage accumulation (84.4% vs. 70.7%) and cholesterol crystals (39.1% vs. 25.7%). Minimal flow area was smaller [1.3(1.1-1.7)mm2 vs. 1.4(1.1-1.9)mm2, all P<0.05] and flow area stenosis was higher (78.2%±10.6% vs. 76.3%±12.3%) in TIMI 0-1 group. Multivariable analysis showed that mean lipid arc>255.55°, cholesterol crystals, angiographical lesion length>16.14 mm, and hsCRP>3.29 mg/L were the independent correlation factors of reduced preprocedural TIMI flow grade in STEMI patients. Conclusions: Plaque vulnerability and inflammation are closely related to reduced preprocedural TIMI flow grade in STEMI patients.

Prognostic value of fasting glucose on the risk of heart failure and left ventricular systolic dysfunction in non-diabetic patients with ST-segment elevation myocardial infarction / 医学前沿

Recent studies have shown that acute blood glucose elevation in patients with ST-segment elevation myocardial infarction (STEMI) suggests a poor prognosis. To investigate the effect of fasting blood glucose (FBG) on the risk of heart failure (HF) and left ventricular systolic dysfunction (LVSD) in non-diabetic patients undergoing primary percutaneous coronary intervention (PCI) for acute STEMI, we retrospectively recruited consecutive non-diabetic patients who underwent primary PCI for STEMI in our hospital from February 2003 to March 2015. The patients were divided into two groups according to the FBG level. A total of 623 patients were recruited with an age of 61.3 ± 12.9 years, of whom 514 (82.5%) were male. The HF risk (odds ratio 3.401, 95% confidence interval (CI) 2.144-5.395, P < 0.001) was significantly increased in patients with elevated FBG than those with normal FBG. Elevated FBG was also independently related to LVSD (β 1.513, 95%CI 1.282-1.785, P < 0.001) in a multiple logistics regression analysis. In conclusion, elevated FBG was independently associated with 30-day HF and LVSD risk in non-diabetic patients undergoing primary PCI for STEMI.

Revascularização Completa Versus Tratamento da Artéria Culpada no Infarto com Supradesnivelamento do Segmento ST: Registro Multicêntrico / Complete Revascularization Versus Treatment of the Culprit Artery Only in ST Elevation Myocardial Infarction: A Multicenter Registry

Resumo Fundamento São restritos os dados sobre o manejo e o prognóstico dos pacientes com infarto agudo do miocárdio com supradesnivelamento do segmento ST (IAMCSST) com acometimento multiarterial no Brasil, o que mostra a necessidade de investigar as estratégias de revascularização disponíveis. Objetivo Avaliar os desfechos relacionados à revascularização completa em comparação com o tratamento da artéria culpada em pacientes multiarteriais com IAMCSST. Métodos Foi realizada um estudo de coorte prospectiva em dois centros de hemodinâmica do Sul do Brasil, com seguimento de 1 ano após a intervenção índice. O desfecho primário foi composto de óbito cardiovascular, reinfarto ou angina recorrente e secundários acidente vascular encefálico, parada cardiorrespiratória não fatal, sangramento maior ou necessidade de reintervenção. A probabilidade de ocorrência de desfechos foi comparada entre os grupos através de regressão logística binária. Considerou-se como estatisticamente significativo o valor de probabilidade < 0,05. Resultados Participaram 85 pacientes, com média de idade de 62±12 anos, sendo 61 (71,8%) do sexo masculino. Cinquenta e oito (68,2%) pacientes receberam a estratégia de revascularização completa e 27 (31,8%), a de revascularização incompleta. A chance de ocorrência tanto do desfecho primário quanto do secundário foi significativamente maior entre os indivíduos tratados com revascularização incompleta quando comparados com os tratados com estratégia completa [razão de chances (OR) 5,1, intervalo de confiança de 95% (IC95%) 1,6-16,1 vs. OR 5,2, IC95% 1,2-22,9, respectivamente], assim como os óbitos cardiovasculares (OR 6,4, IC95% 1,2-35,3). Conclusão Dados deste registro regional, de dois centros do Sul do Brasil, demonstram que a estratégia de revascularização completa esteve associada à redução significativa dos desfechos primário e secundário no seguimento de 1 ano quando comparada à estratégia de revascularização incompleta. (Arq Bras Cardiol. 2020; 115(2):229-237)

Abstract Background Data on the management and prognosis of patients with ST-segment elevation myocardial infarction (STEMI) and multivessel disease are limited in Brazil, showing that the available revascularization strategies should be investigated Objective To assess the outcomes of complete revascularization versus treatment of the culprit artery only in patients with STEMI and multivessel disease. Methods A prospective cohort study was conducted at two medical centers in southern Brazil with a 1-year follow-up after the index procedure. The primary outcome was a composite of cardiac death, reinfarction, or recurrent angina, while the secondary outcome was stroke, nonfatal cardiac arrest, major bleeding, or need for reintervention. The probability of outcomes occurring was compared between the groups using binary logistic regression. A p-value < 0.05 was considered statistically significant. Results Eighty-five patients were included. Their mean age was 62±12 years, and 61 (71.8%) were male. Fifty-eight (68.2%) were treated with complete revascularization and 27 (31.8%) with incomplete revascularization. The chance of both the primary and secondary outcomes occurring was significantly greater among patients treated with incomplete revascularization when compared to those treated with complete revascularization (odds ratio [OR] 5.1, 95% confidence interval [CI] 1.6-16.1 vs. OR 5.2, 95% CI 1.2-22.9, respectively), as well as cardiac death (OR 6.4, 95% CI 1.2-35.3). Conclusion Registry data from two centers in southern Brazil demonstrate that the complete revascularization strategy is associated with a significant reduction in primary and secondary outcomes in a 1-year follow-up when compared to the incomplete revascularization strategy (Arq Bras Cardiol. 2020; 115(2):229-237)

Layer-specific strain assessment on left ventricular function before and after PCI in patients with ST segment elevation myocardial infarction / 中华心血管病杂志

Objective: To evaluate the changes of left ventricular function in patients with ST segment elevation myocardial infarction (STEMI) before PCI and within 24 hours after PCI by layer-specific strain, and to explore the value of this new assessment method for quantitative monitoring on the myocardial function in STEMI patients. Methods: A total of 40 patients with acute anterior wall myocardial infarction, who underwent PCI in Affiliated Hospital of Jiangsu University during July 2017 to July 2018, were included in this prospective cohort study. According to the symptom to balloon time (STB), the patients were divided into STB ≤6 hours group (26 cases) and STB 6-12 hours group (14 cases). Echocardiography was performed before, immediately, 3 hours and 24 hours after PCI. Echocardiographic indexes including endocardial myocardial longitudinal strain (LS-endo), 18-segment full-thickness myocardial longitudinal strain (LS) of left ventricle and left ventricular global longitudinal strain (GLS) were measured. The mean LS-endo and LS values of myocardial segments in infarcted area (IALS-endo, IALS) and the mean LS-endo and LS values of myocardial segments in non-infarcted area (NIALS-endo, NIALS) were calculated. Results: There were 34 males and 6 females in this cohort and age was (62±10) years. In STB≤6 hours group, the IALS-endo value ((13.7±4.9)% vs. (10.0±2.7)%, P<0.05) and NIALS-endo value ((17.0±2.9)% vs. (14.6±2.9)%, P<0.05) were significantly higher at 24 hours after PCI than those before PCI. In the group of STB 6-12 hours, IALS-endo decreased immediately after PCI ((6.7±3.3)% vs. (11.9±6.5)%, P<0.05), and there was a rising trend at 3 hours after PCI (P>0.05). At 24 hours after PCI, the index was higher than that immediately after PCI ((13.6±8.4)% vs. (6.7±3.3)%, P<0.05). The NIALS-endo value was significantly higher at 24 hours after PCI than that before PCI ((17.1±2.1)% vs. (14.5±3.2)%, P<0.05). In the STB 6-12 hours group, the decrease rate of IALS-endo immediately after PCI was higher than that in the STB ≤6 hours group (93% (13/14) vs. 35% (9/26), P<0.001). In STB ≤6 hours group, the NIALS value at 24 hours after PCI was higher than that before PCI (P<0.05), and there was no significant difference in IALS, NIALS and GLS at other time points (P>0.05). Conclusions: Layered LS is superior to full-thickness LS and GLS in evaluating left ventricular function in STEMI patients. LS measured by echocardiography can continuously and quantitatively evaluate the changes of left ventricular myocardial function in STEMI patients before and after PCI.

Predictive value of ATRIA risk score for contrast-induced nephropathy after percutaneous coronary intervention for ST-segment elevation myocardial infarction

SUMMARY BACKGROUND: The AnTicoagulation and Risk factors In Atrial fibrillation (ATRIA) risk score used to detect the thromboembolic and hemorrhagic risk in atrial fibrillation patients has been shown recently to predict poor clinical outcomes in patients with acute myocardial infarction (ACS), regardless of having atrial fibrillation (AF). We aimed to analyze the relationship between different risk scores and contrast-induced nephropathy (CIN) development in patients with ACS who underwent urgent percutaneous coronary intervention (PCI) and compare the predictive ability of the ATRIA risk score with the MEHRAN risk score. METHODS: We analyzed 429 patients having St-segment Elevation Myocardial Infarction (STEMI) who underwent urgent PCI between January 2016 and February 2017. Patients were divided into two groups: those with and those without CIN and both groups were compared according to clinical, laboratory, and demographic features, including the CHA2DS2-VASc and ATRIA risk score. Predictors of CIN were determined by multivariate regression analysis. Receiver operating characteristics (ROC) curve analysis was used to analyze the prognostic value of CHA2DS2-VASc and ATRIA risk score for CIN, following STEMI. RESULTS: Multivariate regression analysis showed that Athe TRIA risk score, Opaque/Creatinine Clearance ratio, and low left ventricular ejection fraction was an independent predictor of CIN. The C-statistics for the ATRIA risk score and CHA2DS2-VASC risk score were 0.66 and 0.64 (p<0.001, and p<0.001), respectively. A pair-wise comparison of ROC curves showed that both scores were not inferior to the MEHRAN score in predicting CIN. CONCLUSION: The ATRIA and CHA2DS2-VASC scoring systems were useful for detecting CIN following STEMI.

RESUMO OBJETIVO: O escore Anticoagulação e Fatores de Risco na Fibrilação Atrial (Atria), usado na detecção do risco tromboembólico e hemorrágico de pacientes com fibrilação atrial (FA), recentemente demonstrou predizer resultados clínicos ruins em pacientes com infarto agudo do miocárdio (SCA), independentemente de ter FA. Nosso objetivo foi analisar a relação entre os diferentes escores de risco e o desenvolvimento de nefropatia induzida por contraste (NIC) em pacientes com SCA submetidos à intervenção coronária percutânea (ICP) urgente e comparar a capacidade preditiva do escore de risco Atria com o escore de risco Mehran. MÉTODOS: Foram analisados 429 pacientes com infarto agudo do miocárdio com elevação do segmento ST (IAM-ST) submetidos à ICP de urgência entre janeiro de 2016 e fevereiro de 2017. Os pacientes foram divididos em dois grupos: aqueles com e sem NIC, e ambos os grupos foram comparados de acordo com as características clínicas, laboratoriais e demográficas, incluindo os escores de risco CHA2DS2-VASc e Atria. Preditores de NIC foram determinados por análise de regressão multivariada. A análise da curva características de operação do receptor (ROC) foi utilizada para analisar o valor prognóstico dos escores de risco CHA2DS2-VASc e Atria para NIC, após IAM-ST. RESULTADOS: A análise de regressão multivariada mostrou que o escore de risco Atria, a relação opaca/crCl e a baixa fração de ejeção do ventrículo esquerdo foram preditores independentes de NIC. A estatística-C para o escore de risco Atria e o escore de risco CHA2DS2-VASC foi de 0,66 e 0,64 (p<0,001 e p<0,001), respectivamente. Uma comparação de pares de curvas características de operação do receptor mostrou que ambos os escores foram não inferiores ao escore Mehran na previsão de NIC. CONCLUSÃO: Os sistemas de pontuação Atria e CHA2DS2-VASC foram sistemas úteis para a detecção de NIC após IAM-ST.

Impacto do diabetes mellitus na reperfusão miocárdica após intervenção coronariana percutânea primária / Impact of diabetes mellitus on myocardial reperfusion following primary percutaneous coronary intervention

OBJETIVO: Analisar a reperfusão miocárdica após intervenção coronariana percutânea primária em diabéticos e não diabéticos. MÉTODOS: Estudo caso-controle prospectivo, realizado no período de janeiro de 2013 a março de 2014, incluindo pacientes com diagnóstico de infarto agudo do miocárdio com menos de 12 horas do início dos sintomas e submetidos à terapia de reperfusão com intervenção coronariana percutânea primária. Foi realizada avaliação do blush miocárdico, da resolução do supradesnivelamento de segmento ST >50% em 90 e em 180 minutos e do Thrombolysis in Myocardial Infarction (TIMI) frame count corrigido <40 quadros. RESULTADOS: Foram incluídos 201 pacientes no estudo, sendo 32 diabéticos. Levando em consideração os marcadores de reperfusão miocárdica estudados, indivíduos diabéticos tiveram menor resolução do segmento ST, menor blush miocárdico e maior TIMI frame count após angioplastia primária quando comparados aos não diabéticos. CONCLUSÕES: Diabéticos apresentaram piores índices de reperfusão miocárdica pós-angioplastia primária comparados aos não diabéticos. (AU)

OBJECTIVES: To analyze myocardial reperfusion following primary percutaneous coronary intervention in diabetic and non-diabetic patients. METHODS: This is a prospective casecontrol study, conducted from January 2013 to March 2014, including patients diagnosed with acute myocardial infarction less than 12 hours after the onset of symptoms, and undergoing reperfusion therapy with Primary percutaneous coronary intervention. The myocardial blush, ST-segment elevation >50% resolution in 90 and 180 minutes, and corrected Thrombolysis Myocardial Infarction (TIMI) frame count <40 frames were evaluated. RESULTS: A total of 201 patients were included in the study, of which 32 were diabetic. Taking the studied myocardial reperfusion markers into consideration, diabetic patients had lower ST segment resolution, lower myocardial blush, and higher TIMI frame count after primary angioplasty when compared to non-diabetics. CONCLUSIONS: Diabetic patients presented worse myocardial reperfusion rates after primary angioplasty when compared to non-diabetic patients. (AU)

The importance of intra-aortic pulse pressure after anterior ST-segment elevation myocardial infarction

Abstract Objective: To evaluate the association of pulse pressure (PP) with mortality and major adverse cardiac events (MACE) in one-year period after anterior ST-elevation myocardial infarction (A-STEMI). Methods: A total of 261 consecutive patients whose blood pressure was measured with the aid of a catheter before primary percutaneous coronary intervention (PPCI) between August 2016 and February 2017 were included in the study. The patients were divided into three groups according to pulse pressure (PP) (Group 1, PP<35 mmHg; Group 2, 35≤PP≤50 mmHg; Group 3, PP>50 mmHg). Results: The mean age of the patients was 63.4±14.1 years, and 206 of them were male. The groups were similar in terms of age and diastolic blood pressure (DBP). The ratio of female patients in Group 1 was higher, and their systolic blood pressure (SBP) was lower than those from the other groups (P=0.005 vs. P=0.042). The rates of MACE and mortality were higher in Group 1. The predictive PP values were calculated to be 42.5 mmHg for development of MACE and 41.5 mmHg for mortality. One-year survival ratio was worse in Group 1 than in the others according to Kaplan-Meier analysis (P<0.001). Conclusion: The values of PP which was measured intra-aortically in patients with A-STEMI were associated with mortality and MACE in the one-year follow-up period.