Infarto agudo de miocardio prematuro con elevación del segmento ST: análisis de una cohorte en la década 2012-2022 / Premature acute myocardial infarction with ST segment elevation: a cohort study in the 2012-2022 decade

Resumen Antecedentes y objetivo: El infarto prematuro tiene un alto impacto socioeconómico y carecemos de estudios contemporáneos que analicen las características asociadas al desarrollo de estos eventos y a su evolución Material y meéodos: En un estudio observacional sobre una cohorte retrospectiva que incluyó pacientes menores de 46 años con un infarto entre junio de 2012 y junio de 2022, se analizaron las características sociodemográficas, factores de riesgo cardiovasculares, tóxicos, características del infarto, datos sobre infección e inmunización por SARS-CoV-2, se realizó un seguimiento retrospectivo a un anÌo mediante la historia electrónica y se compararon los resultados con los reportados en la literatura. Resultados: El 12.1% de las angioplastias primarias corresponded a infartos prematuros (103). Entre los factores de riesgo clásicos destacaron la dislipidemia y el sobrepeso. La hipertensión y la diabetes fueron significativamente menores que las cifras reportadas en población mayor. El consumo de tabaco fue significativamente mayor, aí como el de otros tóxicos entre los que destacaron el cannabis y la ocaína. Los antecedentes familiares estuvieron presentes en 27 pacientes. El 27.2% (28) tuvieron complicaciones durante el ingreso y la mortalidad fue del 4.9% (5). No se identificaron diferencias significativas entre los pacientes que iniciaron con un evento antes o despuéde la pandemia, a excepción de una tendencia a la disminción del hábito tabáquico. Conclusiones: El infarto prematuro es una patología al alza con una morbimortalidad considerable. La concienciación sobre los hábitos tóxicos y prevención de los factores de riesgo clásicos son tareas prioritarias en nuestro medio.

Abstract Background and purpose: Premature infarction has a high socioeconomic impact and we lack contemporary studies that analyze the characteristics associated with its development and evolution. Material and methods: In an observational study on a retrospective cohort of patients younger than 46 years old, who had suffered from an infarction from June 2012 to June 2022, sociodemographic characteristics, cardiovascular and toxic risk factors, infarction characteristics, SARS-CoV-2 infection and immunization data were investigated. Indeed, a one-year retrospective follow-up was performed through their electronic health record and results were compared with the ones reported in literature. Results: 12.1% of primary angioplasties corresponded to premature infarctions (103). Among classical risk factors, dyslipidemia and overweight stood out, while hypertension and diabetes incidence was significantly lower than the one reported in older population. The consumption of tobacco and other drugs (especially cannabis and cocaine) was higher than that reported at older ages. Twenty-seven patients had a family history of ischemic cardiopathy or sudden cardiac death, 27.2% (28) had complications during admission and mortality was 4.9% (5). No significant differences were identified between the patients who debuted with an event before or after the pandemic, except for a tendency to smoking cessation. Conclusions: Premature infarction is a rising pathology with considerable morbidity and mortality. Raising awareness about toxic habits and prevention of the classical risk factors are priority tasks in this setting.

Utilización de la estrategia farmacoinvasiva en Argentina. Análisis del registro ARGEN-IAM ST / Use of the Pharmacoinvasive Strategy in Argentina. ARGEN-IAM ST Registry Analysis

RESUMEN Introducción : La angioplastia primaria (ATCp) es el tratamiento de elección para el infarto agudo de miocardio con elevación del segmento ST (IAMCEST). En nuestro país, de tanta extensión territorial y con tiempos a la reperfusión subóptimos, la estrategia farmacoinvasiva (Finv) podría considerarse. Material y métodos : El ARGEN-IAM-ST es un registro prospectivo, multicéntrico, nacional y observacional. Se incluyen pacien tes con IAMCEST dentro de las 36 horas de evolución. Se definió en el mismo la utilización de Finv y las variables asociadas. Resultados : Se analizaron 4788 pacientes de los cuales en el 88,56 % se realizó ATCp, en el 8,46 % trombolíticos con reperfusión positiva (TL+), y solo en un 2,98% Finv. La mediana y rango intercuartílico (RIC) del tiempo total de isquemia fueron menores en aquellos que recibieron TL+ (165 min, RIC 100-269) y los que fueron a Finv (191 min, RIC 100-330) que en aquellos que fueron a ATCp (280 min, RIC 179- 520), p <0,001. No existieron diferencias en mortalidad intrahospitalaria, en el grupo Finv 4,9%, 5,2% en el grupo TL + y en el grupo ATCp 7,8% (p = 0,081). No hubo diferencias en término de sangrados mayores. Se observó que un 57% de los pacientes con TL+ reunían características de alto riesgo, y no recibieron Finv acorde a lo recomendado Conclusiones : Solo 3 de cada 100 pacientes con IAMCEST que se reperfunden reciben Finv. Su implementación no está ligada en forma sistemática al alto riesgo de eventos. Pese a esta subutilización, por presentar un menor tiempo total de isquemia que la ATCp, sin aumento en los sangrados clínicamente relevantes persiste como una opción a considerar en nuestra realidad.

ABSTRACT Background : Primary percutaneous coronary intervention (PPCI) is the treatment of choice for acute ST-elevation myocardial infarction (STEMI). In Argentina, a country with a large area and suboptimal reperfusion times, the pharmacoinvasive (PI) strategy might be considered. Methods : ARGEN-IAM-ST is a national prospective, multicenter, and observational registry that includes STEMI patients with less than 36 hours of progression. The PI strategy usage and its associated variables were defined. Results : In this registry, 4788 patients were analyzed, of which 88.56% underwent PPCI, 8.46% received thrombolytics with positive reperfusion (TL+), and only 2.98% received PI strategy. Median and interquartile range (IQR) of total ischemia time were lower in patients receiving TL+ (165 min, IQR 100-269) and PI (191 min, IQR 100-330) than in patients undergoing PPCI (280 min, IQR 179-520), p <0.001. No differences in intra-hospital mortality were observed: 4.9% in the PI strategy group, 5.2% in the TL+ group and 7.8% in the PPCI group (p = 0.081). No differences in major bleeding events were observed. It was observed that 57% of the TL+ patients met the criteria for high cardiovascular risk, but they did not receive PI strategy, as recommended. Conclusions : Only 3 out of 100 reperfused STEMI patients received PI strategy. Its administration is not systematically associated to high cardiovascular risk. Despite the under-usage, it remains an option to be considered due to its total ischemia time lower than in the PPCI, with no increase in clinically significant bleedings.

Características y evolución clínica de pacientes con infarto agudo de miocardio y elevación del segmento ST con y sin bloqueo interauricular

Fundamento resulta novedoso establecer la relación entre bloqueo interauricular e infarto agudo de miocardio con elevación del segmento ST debido a los pocos estudios que abordan el tema. Objetivo evaluar las características y evolución clínica de pacientes con infarto agudo de miocardio con elevación del segmento ST con y sin bloqueo interauricular. Métodos: se realizó un estudio descriptivo y correlacional en unidades de cuidados progresivos del Hospital General Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos. Se seleccionaron 169 sujetos con diagnóstico de infarto agudo de miocardio con elevación del segmento ST divididos en dos grupos con y sin bloqueo interauricular. Se analizaron como variables demográficas: edad, sexo, color de la piel y entre las clínicas hábitos tóxicos (fumador, exfumador); antecedentes patológicos (infarto de miocardio, angina, enfermedad arterial periférica, hipertensión arterial, diabetes mellitus tipo 2, enfermedad renal crónica; localización del infarto (anterior, inferior, bloqueo de rama izquierda); complicaciones: insuficiencia cardíaca, fibrilación auricular, taquicardia ventricular/fibrilación ventricular, trastornos de conducción aurículo ventricular, complicación mecánica, angina postinfarto, embolismo arterial) y estado al egreso (vivo o fallecido). Resultados el 52,17 % de los pacientes con infarto agudo de miocardio con elevación del segmento ST con bloqueo interauricular desarrollaron insuficiencia cardíaca, vs el 29,45 % de los pacientes sin bloqueo con significación estadística (p = 0.03). La relación entre la ocurrencia o no de complicaciones (así como el estado al egreso) y la presencia o no de bloqueo resultó muy significativa (p=0.01). Conclusiones el análisis minucioso en este contexto, de otros aspectos no habituales como la onda p, debe ser también rutinario, pues la documentación de bloqueo interauricular pudiera relacionarse con el curso clínico de los pacientes.

Foundation: it is novel to establish the relationship between interatrial block and acute myocardial infarction with ST-segment elevation due to the few studies that address the subject. Objective: to evaluate the characteristics and clinical evolution of patients with ST-segment elevation acute myocardial infarction with and without interatrial block. Methods: a descriptive and correlational study was carried out in progressive care units of the Dr. Gustavo Aldereguía Lima University General Hospital in Cienfuegos. 169 subjects with a diagnosis of ST-segment elevation myocardial infarction divided into two groups with and without interatrial block were selected. Demographic variables were analyzed: age, sex, skin color and between clinics: toxic habits (smoker, ex-smoker); medical history (myocardial infarction, angina, peripheral arterial disease, arterial hypertension, type 2 diabetes mellitus, chronic kidney disease; infarct location (anterior, inferior, left bundle branch block); complications: heart failure, atrial fibrillation, ventricular tachycardia/ventricular fibrillation, atrioventricular conduction disorders, mechanical complication, post infarction angina, arterial embolism) and discharge status (alive or deceased). Results: 52.17 % of patients with ST-segment elevation myocardial infarction with interatrial block developed heart failure, vs 29.45 % among patients without block with statistical significance (p = 0.03). The relationship between the occurrence or not of complications (as well as the state at discharge) and the presence or not of blockade was highly significant (p=0.01). Conclusions: the detailed analysis, in this context, of the p wave of the electrocardiogram should be routine, since the documentation of interatrial block could be related to the clinical course of the patients.

Quality of Life in Patients After Acute ST-Segment Elevation Myocardial Infarction

Abstract Background: ST-segment elevation myocardial infarction (STEMI) is the acute coronary syndrome with the highest severity and mortality. It can affect physical health and well-being of patients, and consequently their quality of life (QoL). Objective: To describe the QoL of patients at 30 days and 180 days after STEMI, focusing on sex differences and repercussions on physical and mental dimensions. Methods: Observational study with 174 STEMI patients included in the study on STEMI conducted in the city of Salvador, Brazil (PERSISST). The QoL of patients at 30 days (D30) and 180 days (D180) after the coronary event was assessed using the 12-item short form health survey (SF-12). Physical and mental components of QoL were calculated using the SF-12 OrthoToolKit. Descriptive analysis of data was made using the IBM SPSS software, version 25.0. Results: Mean age of participants at D30 and D180 was 57.1±11.4 years and 60.5±10.9 years, respectively, with a higher prevalence of men (55.8% and 56.8%). In general, patients had a poor QoL at both time points (scores 49.1±8.9 and 49.9±8.4, respectively). Analysis by sex, however, showed that men had a good QoL at both 30D (score 51.8±7.4) and 180 D (score 51.3±7.7), whereas a poor QoL was found among women at these time points (45.7±9.6 and 48.1±9.0, respectively). Men showed higher physical and mental health scale scores than women at both D30 and D180, and there was a greater impairment of the physical component in both sexes. Conclusion: Patients had poor QoL at 30 days and 180 days after STEMI, with a greater impairment of the physical component and a worse QoL perception among women than men at both time points.

Caracterización de pacientes con infarto agudo de miocardio atendidos en el Hospital General Universitario Dr. Gustavo Aldereguía Lima

Fundamento: el infarto agudo de miocardio con elevación del segmento ST impone un gran desafío a los sistemas de salud, por tanto, su diagnóstico y manejo son importantes. Objetivo: determinar las principales características clínico-epidemiológicas de pacientes con diagnóstico de infarto agudo de miocardio con elevación del segmento ST. Métodos: se realizó un estudio descriptivo y transversal sobre una serie de pacientes atendidos en el Hospital General Universitario Dr. Gustavo Aldereguía Lima de Cienfuegos, en el periodo de enero a junio de 2021. El universo estuvo constituido por 77 pacientes. Se estudiaron variables como: edad, sexo, color de la piel, procedencia, comorbilidades, hábitos tóxicos, manifestaciones clínicas, trombolisis, lugar donde se trombolizaron, causas de no trombolisis, topografía del infarto agudo de miocardio, estado al egreso, complicaciones del infarto y del tratamiento trombolítico. Para el procesamiento y análisis de la información se creó una base de datos en el paquete estadístico SPSS versión 21.0 que permitió el cálculo de las frecuencias absolutas y los porcentajes. Resultados: la media de edad fue 66,08 (±9,43). Hubo un predominio del sexo masculino (64,7 %); el 59,7 % de los pacientes fueron trombolizados; el dolor torácico típico fue la principal manifestación clínica con un 71,4 %; fallecieron 12 pacientes, de ellos el 10,4 % no recibió tratamiento trombolítico. Conclusiones: el principal motivo de consulta sigue siendo el dolor torácico. La edad y las comorbilidades son factores de riesgo a tener en cuenta a la hora de prevenir esta entidad. La trombolisis es una medida terapéutica que tiene repercusión directa en el estado al egreso de los pacientes, este procedimiento se realiza en su mayoría en el hospital.

Background: ST-segment elevation acute myocardial infarction poses a great challenge to health systems, therefore its diagnosis and management are important. Objective: to determine the main clinical-epidemiological characteristics of patients diagnosed with ST-segment elevation acute myocardial infarction. Methods: a descriptive and cross-sectional study was carried out on a series of patients treated at the Dr. Gustavo Aldereguía Lima University General Hospital in Cienfuegos, from January to June 2021. The universe consisted of 77 patients. Variables such as: age, sex, skin color, origin, comorbidities, toxic habits, clinical manifestations, thrombolysis, place where they were thrombolyzed, causes of non-thrombolysis, topography of acute myocardial infarction, discharge status, infarction complications and of thrombolytic treatment. For the processing and analysis of the information, a database was created in the statistical package SPSS version 21.0 that allowed the calculation of the absolute frequencies and the percentages. Results: the mean age was 66.08 (±9.43). There was a predominance of the male sex (64.7 %); 59.7 % of the patients were thrombolyzed; typical chest pain was the main clinical manifestation with 71.4 %; 12 patients died, of which 10.4 % did not receive thrombolytic treatment. Conclusions: the main reason for consultation continues to be chest pain. Age and comorbidities are risk factors to take into account when preventing this entity. Thrombolysis is a therapeutic measure that has a direct impact on the state at discharge of patients, this procedure is performed mostly in the hospital.

Rehabilitación cardiaca en mujeres y hombres después de un infarto agudo del miocardio

Fundamento: la rehabilitación cardiovascular favorece la recuperación de los pacientes que sufren de infarto del agudo del miocardio. Objetivo caracterizar la rehabilitación cardiovascular en mujeres y hombres con un primer infarto agudo de miocardio no complicado con elevación del segmento ST. Métodos: se realizó un estudio descriptivo y transversal en el Centro de Atención Cardiovascular del Hospital Provincial Docente Clínico Quirúrgico Manuel Ascunce Domenech de Camagüey en el período comprendido entre septiembre de 2015 hasta septiembre del 2016. La muestra estuvo constituida por 65 pacientes a los que se realizó una prueba ergométrica y ecocardiograma pre-alta y 6 semanas después de rehabilitados. A los cinco años se evaluó supervivencia. Se realizó prueba de ergométrica máxima limitada por síntomas para determinar estratificación de riesgo, capacidad funcional, prescripción de la actividad y proporcionar información al paciente. Resultados: hubo mayor incidencia de infarto rehabilitado en el sexo masculino, el grupo de edad más afectado fue el de 50-59 años y la hipertensión arterial fue el factor de riesgo cardiovascular predominante. Hubo notable mejoría en los parámetros ergométricos y hemodinámicos después de las 6 semanas de la rehabilitación. La reacción hipertensiva y la disnea, disminuyeron en la mayoría de los casos al final del estudio. Los pacientes que comenzaron el estudio mejoraron su clase funcional a las 6 semanas de rehabilitados y hubo un incremento de la categoría riesgo bajo a expensas del riesgo moderado. La supervivencia a los cinco años fue del 89,9 %. Conclusiones: se obtuvo una significativa mejoría de parámetros clínicos y ergométricos, así como la reincorporación a las labores cotidianas en los pacientes que participaron en el programa. Las mujeres recibieron menos beneficios de este programa que los hombres.

Background: cardiovascular rehabilitation favors the recovery of patients suffering from acute myocardial infarction. Objective: to characterize cardiovascular rehabilitation in women and men with a first uncomplicated acute myocardial infarction with ST-segment elevation. Methods: a descriptive and cross-sectional study was carried out at the Cardiovascular Care Center of the Manuel Ascunce Domenech Teaching Clinical Surgical Provincial Hospital in Camagüey in the period from September 2015 to September 2016. The sample consisted of 65 patients. who underwent a stress test and echocardiogram before discharge and 6 weeks after rehabilitation. Survival was evaluated at five years. Symptom-limited maximal stress test was performed to determine risk stratification, functional capacity, activity prescription and provide information to the patient. Results: there was a higher incidence of rehabilitated infarction in males, the most affected age group was 50-59 years, and arterial hypertension was the predominant cardiovascular risk factor. There was notable improvement in the ergometric and hemodynamic parameters after 6 weeks of rehabilitation. The hypertensive reaction and dyspnea decreased in most cases at the end of the study. The patients who began the study improved their functional class 6 weeks after rehabilitation and there was an increase in the low risk category at the expense of moderate risk. Five-year survival was 89.9 %. Conclusions: a significant improvement of clinical and ergometric parameters was obtained, as well as the return to daily tasks in the patients who participated in the program. Women received fewer benefits from this program than men.

Complete revascularization with PCI in STEMI patients with multivessel disease, when is the appropriate time? / Revascularización completa mediante ICP en pacientes con STEMI y enfermedad coronaria multivaso, ¿cuál es el momento adecuado?

Abstract Objective: The purpose was to compare the outcomes of patients with ST-elevation myocardial infarction and multivessel coronary artery disease undergoing one-time multivessel revascularization (OTMVR) versus in-hospital staged complete revascularization with percutaneous coronary intervention. Methods: This was a single-center, retrospective, observational, and cohort study, including data from January 2013 to April 2019. A total of 634 patients were included in the study. Comparisons were made between patients who underwent in-hospital staged complete revascularization versus OTMVR. The primary endpoint was all-cause in-hospital mortality, secondary endpoints included cardiovascular complications, all-cause new hospitalization, and mortality evaluated at 30 days and 1 year. In addition, we constructed a logistic regression model for determining the risk factors that predicted mortality. Results: Of the 634 patients, 328 were treated with staged revascularization and 306 with OTMVR. About 76.7% were men, with a mean age of 63.3 years. Less complex coronary lesions and a higher proportion of the left anterior descending artery as the culprit vessel were found in the OTMVR group. Compared with staged revascularization, the primary and secondary endpoints occurred less frequently with OTMVR strategy. Conclusions: OTMVR did not generate more complications and demonstrate better clinical outcomes than in-hospital staged revascularization.

Resumen Objetivo: El propósito fue comparar resultados de pacientes con infarto agudo de miocardio con elevación del segmento ST y enfermedad coronaria multivaso sometidos a revascularización completa de un solo momento frente a revascularización completa por etapas mediante intervención coronaria percutánea. Métodos: Estudio cohorte observacional, retrospectivo, unicéntrico, con datos de enero de 2013 a abril de 2019, incluyendo 634 pacientes. Se compararon resultados entre pacientes sometidos a revascularización completa por etapas frente a revascularización completa en un solo momento. El objetivo primario fue valorar mortalidad intrahospitalaria por cualquier causa y como objetivos secundarios se evaluaron a 30 días y 1 año las complicaciones cardiovasculares, hospitalizaciones y mortalidad. Se construyó un modelo de regresión logística para determinar los factores de riesgo que predijeron mortalidad. Resultados: De 634 pacientes, 328 fueron tratados con revascularización por etapas y 306 con revascularización en una intervención. El 76.7% fueron hombres, con una media de edad de 63.3 años. En el grupo de revascularización de un solo tiempo se encontraron lesiones coronarias menos complejas y una mayor proporción de la arteria descendente anterior como vaso culpable. Comparado con el grupo de revascularización por etapas, los objetivos primarios y secundarios ocurrieron con menos frecuencia en el grupo de revascularización en un solo tiempo. Conclusiones: Comparada con la revascularización intrahospitalaria por etapas, la revascularización en una intervención lleva a mejores desenlaces clínicos sin generar más complicaciones.

Coronary Artery Ectasia as a Predictor of Major Adverse Cardiac Events in Patients with Acute ST Elevation Myocardial Infarction

Background: Coronary artery ectasia (CAE) is characterised as localised or widespread non-obstructive lesions of the epicardial coronary arteries with a luminal dilation more than 1.5 times the neighbouring normal segments or vessel diameter. Isolated CAE is CAE in the absence of severe coronary artery stenosis. This aberrant dilatation of coronary arteries can produce angina pectoris and even myocardial infarction in people without coronary artery disease owing to vasospasm, dissection, or thrombus. The purpose of this study was to evaluate the connection between CAE and major adverse cardiac events (MACE) following acute myocardial infarction with ST elevation. Methods: This was a prospective cohort study which was carried out on 300 cases. Cases were divided into two groups: Group I: including about 22 STEMI cases with CAE and Group II: including about 278 STEMI cases without CAE. All cases in this study were subjected to full history taking, clinical examination, laboratory tests, standard 12-leads ECG, resting transthoracic echocardiography (TTE), and coronary angiography. Results: Regarding MACE in the studied groups, Incidence of reinfarction and cardiac death were significant higher in cases with STEMI and CAE than cases with STEMI alone. In univariate regression analysis, CAE (OR: 3.59, p value =0.022) was a significant predictor of cardiac death but age, male sex, and EF were not. Also, in multivariate regression analysis CAE (OR: 3.49, p value =0.029) was a significant predictor of cardiac death but age, male sex, and EF were not smoking with high warfarin consumption. Further, Markis classification 1 and 3 were the most frequent phenotype among cases. In STEMI cases, the incidence of reinfarction and cardiac death were significantly higher in cases with STEMI and CAE than cases with STEMI alone. So, CAE is a significant predictor of cardiac death.

Relação entre a Relação Fibrinogênio/Albumina e a Perfusão Microvascular em Pacientes Submetidos à Intervenção Coronária Percutânea Primária para Infarto do Miocárdio com Elevação do Segmento ST: Um Estudo Prospectivo / Relationship between the Fibrinogen/Albumin Ratio and Microvascular Perfusion in Patients Undergoing Primary Percutaneous Coronary Intervention for ST-Elevated Myocardial Infarction: A Prospective Study

Resumo Fundamento A contagem corrigida de quadros TIMI (CTFC), o grau de blush miocárdico (MBG) e a resolução do segmento ST (STR) são parâmetros utilizados para avaliar a reperfusão em nível microvascular em pacientes submetidos à intervenção coronária percutânea primária (ICPp). A relação fibrinogênio/albumina (FAR) tem sido associada a eventos trombóticos em pacientes com infarto do miocárdio com elevação do segmento ST (IAMCSST) e insuficiência venosa crônica. Objetivos Investigar a relação do FAR com CTFC, MBG e STR.Métodos: O estudo incluiu 167 pacientes consecutivos que foram submetidos a ICPp com sucesso para IAMCSST e alcançaram fluxo TIMI-3. Os casos foram divididos em dois grupos, FAR alto (> 0,0765) e FAR baixo (≤ 0,0765), de acordo com o valor de corte desse parâmetro na análise característica do operador do receptor (ROC). STR, CTFC e MBG foram utilizados para avaliar a reperfusão miocárdica. Valores de p<0,05 foram considerados estatisticamente significativos. Resultados O valor CTFC, escore SYNTAX, relação neutrófilos/linfócitos, lipoproteína de baixa densidade, glicose e pico de cTnT foram significativamente maiores, enquanto STR, MBG e FEVE foram menores no grupo FAR alto. A análise de correlação de Spearman revelou relação significativa entre FAR e STR (r=-0,666, p<0,001), MBG (-0,523, p<0,001) e CTFC (r=0,731, p≤0,001). De acordo com a análise de regressão logística, FAR, glicose, pico de cTnT e dor até o tempo de Balão foram os preditores independentes mais importantes de MBG 0/1, CTFC>28 e STR<50%). A análise ROC revelou que o ponto de corte o valor de FAR≥0,0765 foi preditor de STR incompleto com sensibilidade de 71,9% e especificidade de 69,8%, MBG0/1 com sensibilidade de 72,6% e especificidade de 68,6%, e CTFC>28 com sensibilidade de 76% e uma especificidade de 65,8%. Conclusões A FAR é um importante preditor independente de perfusão microvascular em pacientes submetidos a ICPp por IAMCSST.

Abstract Background Correct TIMI frame count (CTFC), myocardial blush grade (MBG), and ST-segment resolution (STR) are parameters used to evaluate reperfusion at the microvascular level in patients that have undergone primary percutaneous coronary intervention (pPCI). Fibrinogen-to-albumin ratio (FAR) has been associated with thrombotic events in patients with ST-elevation myocardial infarction (STEMI) and chronic venous insufficiency. Objectives To investigate the relationship of FAR with CTFC, MBG, and STR. Methods: The study included 167 consecutive patients who underwent successful pPCI for STEMI and achieved TIMI-3 flow. The cases were divided into two groups, high (>0.0765) and low FAR (≤0.0765), according to the cut-off value of this parameter in the receiver operator characteristic analysis (ROC). STR, CTFC, and MBG were used to evaluate myocardial reperfusion. P values<0.05 were considered statistically significant. Results CTFC value, SYNTAX score, neutrophil/lymphocyte ratio, low-density lipoprotein, glucose, and peak cTnT were significantly higher, whereas STR, MBG, and LVEF were lower in the high FAR group. Spearman's correlation analysis revealed a significant relationship between the FAR and STR (r=-0.666, p<0.001), MBG (-0.523, p<0.001), and CTFC (r=0.731, p≤0.001). According to the logistic regression analysis, FAR, glucose, peak cTnT, and pain to balloon time were the most important independent predictors of MBG 0/1, CTFC>28, and STR<50%).ROC analysis revealed that the cut-off value of FAR≥0.0765 was a predictor of incomplete STR with a sensitivity of 71.9 % and a specificity of 69.8 %, MBG0/1 with a sensitivity of 72.6 % and a specificity of 68.6 %, and CTFC >28 with a sensitivity of 76 % and a specificity of 65.8 %. Conclusions FAR is an important independent predictor of microvascular perfusion in patients undergoing pPCI for STEMI.

Diferenças entre os Sexos no Infarto Agudo do Miocárdio com Supradesnivelamento do Segmento ST - Análise Retrospectiva de um Único Centro / ST-Segment Elevation Myocardial Infarction Differences between Genders - A Single Center Retrospective Analysis

Resumo Fundamento Embora os resultados em pacientes com infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST) submetidos a intervenções coronárias percutâneas (ICP) primárias tenham melhorado, as mulheres apresentam maior mortalidade. Objetivos: Avaliar as diferenças de gênero na apresentação, manejo e mortalidade hospitalar, em 30 dias, 6 meses e 1 ano após IAMCSST. Métodos Coletamos retrospectivamente dados de 809 pacientes consecutivos tratados com ICP primária e comparamos mulheres versus homens no banco de dados de cardiologia de intervenção local. O nível de significância utilizado foi p<0,05. Resultados As mulheres eram mais velhas que os homens (69,1±14,6 vs. 58,5±12,7 anos; p<0,001) com maior prevalência de idade acima de 75 anos (36,7% vs. 11,7%; p<0,001), diabetes (30,6% vs. 18,5%; p=0,001), hipertensão (60,5% vs. 45,9%; p=0,001), doença renal crônica (3,4% vs. 0,6%; p= 0,010) e acidente vascular cerebral isquêmico agudo (6,8% vs. 3,0%; p=0,021). Na apresentação, as mulheres apresentavam mais sintomas atípicos, menos dor torácica (p=0,014) e estavam mais frequentemente em choque cardiogênico (p=0,011)). As mulheres tinham mais tempo até a reperfusão (p=0,001) e eram menos propensas a receber terapia médica ideal (p<0,05). A mortalidade intra-hospitalar (p=0,001), em 30 dias (p<0,001), 6 meses (p<0,001) e 1 ano (16,4% vs. p<0,001) foi maior nas mulheres. A análise multivariada identificou idade acima de 75 anos (HR=4,25; IC 95%[1,67-10,77];p=0,002), classe Killip II (HR=8,80; IC 95%[2,72-28,41];p<0,001), III (HR=5,88; IC95% [0,99-34,80]; p=0,051) e IV (HR=9,60; IC 95%[1,86-48,59];p=0,007), Lesão Renal Aguda (HR=2,47; IC 95% [1,00-6,13];p=0,051) e dias de hospitalização (HR=1,04; IC 95%[1,01-1,08];p=0,030), mas não o sexo feminino (HR=0,83; IC95% [0,33-2,10];p=0,690) como fatores prognósticos independentes de mortalidade. Conclusões Comparadas aos homens, as mulheres com IAMCSST submetidas à ICP primária apresentam maiores taxas de mortalidade. Mulheres hospitalizadas por IAMCSST têm pior perfil de risco, são tratadas com maior tempo de reperfusão relacionado a atrasos do sistema e têm menor probabilidade de receber a terapia recomendada. O sexo feminino não foi fator prognóstico independente para mortalidade na população estudada.

Abstract Background Although outcomes in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary interventions (PCI) have improved, women show higher mortality. Objectives To assess gender differences in presentation, management and in-hospital mortality, at 30-days, 6-months and 1-year after STEMI. Methods We retrospectively collected data from 809 consecutive patients treated with primary PCI and compared the females versus males at the local intervention cardiology database. The level of significance used was p<0.05. Results Women were older than man (69,1±14,6 vs. 58,5±12,7 years; p<.001) with higher prevalence of age over 75 years (36.7% vs. 11.7%; p<.001), diabetes (30,6% vs. 18,5%; p=.001), hypertension (60.5% vs. 45.9%; p=.001), chronic kidney disease (3.4% vs. 0.6%; p=.010) and acute ischemic stroke (6.8% vs. 3.0%; p=.021). At presentation, women had more atypical symptoms, less chest pain (p=.014) and were more frequently in cardiogenic shock (p=.011)). Women had longer time until reperfusion (p=.001) and were less likely to receive optimal medical therapy (p<0.05). In-hospital mortality (p=.001), at 30-days (p<.001), 6-months (p<.001) and 1-year (16.4% vs. p<.001) was higher in women. The multivariate analysis identified age over 75 years (HR=4.25; 95% CI[1.67-10.77];p=.002), Killip class II (HR=8.80; 95% CI[2.72-28.41];p<.001), III (HR=5.88; 95% CI [0.99-34.80]; p=.051) and IV (HR=9.60; 95% CI[1.86-48.59];p=.007), Acute Kidney Injury (HR=2.47; 95% CI[1.00-6.13];p=.051) and days of hospitalization (HR=1.04; 95% CI[1.01-1.08];p=.030) but not female gender (HR=0.83; 95% CI[0.33-2.10];p=.690) as independent prognostic factors of mortality. Conclusions Compared to men, women with STEMI undergoing primary PCI have higher mortality rates. Women admitted for STEMI have a worse risk profile, are treated with a higher reperfusion time related with system delays and are less likely to receive the recommended therapy. Female gender was not an independent prognostic factor for mortality in the studied population.

Avaliação do Nível de Fluxo Coronário com MOTS-C em Pacientes com IAMCSST Submetidos à ICP Primária / Evaluation of Coronary Flow Level with Mots-C in Patients with STEMI Undergoing Primary PCI

Resumo Fundamentos Os efeitos protetores da fase de leitura aberta mitocondrial do 12S rRNA-c (MOTS-C) em doenças cardiovasculares foram demonstrados em vários estudos. Entretanto, há pouca documentação da relação entre MOTS-C e fluxo sanguíneo coronariano no infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST). Objetivo Nosso objetivo foi investigar o papel do MOTS-C, que é conhecido por ter propriedades citoprotetoras na patogênese do fenômeno de no-reflow, comparando a taxa de fluxo coronariano e os níveis de MOTS-C em pacientes com IAMCSST submetidos à ICP primária. Métodos 52 pacientes com IAMCSST e 42 pacientes sem estenose >50% nas artérias coronárias foram incluídos no estudo. O grupo IAMCSST foi dividido em dois grupos de acordo com o grau de fluxo TIMI (do inglês Thrombolysis In Myocardial Infarction) pós-ICP: (i) No-reflow: graus 0, 1 e 2 e (ii) grau 3 (sucesso angiográfico). Um valor de p <0,05 foi considerado significante. Resultados Os níveis de MOTS-C foram significativamente menores no grupo IAMCSST em comparação ao grupo controle (91,9 ± 8,9 pg/mL vs. 171,8±12,5 pg/mL, p<0,001). Além disso, a análise da curva Receiver Operating Characteristics (ROC) indicou que os níveis séricos de MOTS-C tinham um valor diagnóstico na previsão de no-reflow (Área sob a curva ROC [AUC]: 0,95, IC95%: 0,856-0,993, p < 0,001). Um valor de MOTS-C ≥84,15 pg/mL medido na hospitalização mostrou ter sensibilidade de 95,3% e especificidade de 88,9% na previsão de no-reflow. Conclusão MOTS-C é um preditor forte e independente de no-reflow e eventos cardiovasculares adversos maiores (ECAM) intra-hospitalar em pacientes com IAMCSST. Também foi observado que baixos níveis de MOTS-C podem ser um importante marcador prognóstico e podem ter um papel na patogênese do IAMCSST.

Abstract Background The protective effects of mitochondrial open reading frame of the 12S rRNA-c (MOTS-C) on cardiovascular diseases have been shown in numerous studies. However, there is little documentation of the relationship between MOTS-C and coronary blood flow in ST-segment elevation myocardial infarction (STEMI). Objective We aimed to investigate the role of MOTS-C, which is known to have cytoprotective properties in the pathogenesis of the no-reflow phenomenon, by comparing the coronary flow rate and MOTS-C levels in patients with STEMI submitted to primary PCI. Methods 52 patients with STEMI and 42 patients without stenosis >50% in the coronary arteries were included in the study. The STEMI group was divided into two groups according to post-PCI TIMI (Thrombolysis In Myocardial Infarction) flow grade:(i) No-reflow: grade 0, 1, and 2 and (ii) grade 3(angiographic success). A p value of <0.05 was considered significant. Results MOTS-C levels were significantly lower in the STEMI group compared to the control group (91.9 ± 8.9 pg/mL vs. 171.8±12.5 pg/mL, p<0.001). In addition, the Receiver Operating Characteristics (ROC) curve analysis indicated that serum MOTS-C levels had a diagnostic value in predicting no-reflow (Area Under the ROC curve [AUC]:0.95, 95% CI:0.856-0.993, p<0.001). A MOTS-C ≥84.15 pg/mL measured at admission was shown to have 95.3% sensitivity and 88.9% specificity in predicting no-reflow. Conclusion MOTS-C is a strong and independent predictor of no-reflow and in-hospital MACE in patients with STEMI. It was also noted that low MOTS-C levels may be an important prognostic marker of and may have a role in the pathogenesis of STEMI.

Short-term outcomes among patients with subclinical hypothyroidism undergoing primary percutaneous coronary intervention

Objectives: This study aimed to examine possible associations between previously undiagnosed subclinical hypothyroidism and short-term outcomes and mortality in a sample of Iraqi patients undergoing primary percutaneous coronary intervention for ST-segment elevation myocardial infarction. Design: This is a prospective observational cohort study. Setting: The study was conducted in a single tertiary referral centre in Baghdad, Iraq. Participants: Thyroid-stimulating hormone and free T4 levels were measured in 257 patients hospitalised with STelevation myocardial infarction who underwent primary percutaneous coronary intervention between January 2020 and March 2022. Main outcome measures: Adverse cardiovascular and renal events during hospitalisation and 30-day mortality were observed. Results: Previously undiagnosed subclinical hypothyroidism was detected in 36/257 (14%) ST-elevation myocardial infarction patients and observed more commonly in females than males. Patients with subclinical hypothyroidism had significantly worse short-term outcomes, including higher rates of suboptimal TIMI Flow (< III) (p =0.014), left ventricular ejection fraction ≤ 40% (p=0.035), Killip class >I (p=0.042), cardiogenic shock (p =0.016), cardiac arrest in the hospital (p= 0.01), and acute kidney injury (p= 0.044). Additionally, 30-day mortality was significantly higher in patients with subclinical hypothyroidism (p= 0.029). Conclusion: Subclinical hypothyroidism previously undiagnosed and untreated had a significant association with adverse short-term outcomes and higher short-term mortality within 30 days compared to euthyroid patients undergoing primary percutaneous coronary intervention. Routine thyroid function testing during these patients' hospitalisation may be warranted.

Risk analysis of blood glucose variation in type 2 diabetic STEMI patients with different HbA 1c levels undergoing emergency PCI / 中国医师杂志

Objective:To investigate the impact of short-term variability in fasting blood glucose (FPG) on the recent major cardiovascular adverse events (MACE) in patients with ST segment elevation myocardial infarction (STEMI) with different levels of glycated hemoglobin (HbA 1c) . Methods:Retrospective analysis was made on the patients with type 2 diabetes mellitus who underwent emergency percutaneous coronary intervention (PCI) due to STEMI from January 2016 to March 2020 in Shenzhen Hospital, Fuwai Hospital, Chinese Academy of Medical Sciences. The patients were divided into HbA 1c compliant group (<6.5%) and non-compliant group (≥6.5%). The blood glucose variability indexes defined included FPG variability score (FPG-VS), variability index independent of FPG mean (VIM) and mean fast plasma glucose (FPG-M). The logistic regression model was used to evaluate the relationship between different HbA 1c levels, blood glucose variability risk indicators, and MACE. Results:A total of 612 patients were ultimately included in the analysis. The blood glucose variability indicators (FPG-VS, VIM) of the HbA 1c non-compliant group (302 cases) were higher than those of the compliant group (310 cases): [FPG-VS: (0.7±0.3) vs (0.4±0.4), P<0.001, VIM: (0.4±0.2) vs (0.3±0.2), P<0.001], while there was no statistically significant difference in FPG-M between the two groups [(7.9±3.2) vs (8.0±3.9), P=0.221]. In the HbA 1c non-compliant group, the correlation between FPG-VS, VIM, and FPG-M and the risk of MACE within 30 days was 0.89(95% CI: 0.69-1.15), 1.21(95% CI: 0.65-2.25), and 1.06(95% CI: 0.97-1.16), respectively (all P>0.05). In the HbA 1c compliant group, FPG-VS was associated with an increase in MACE risk within 30 days ( P=0.04): for each increase in FPG variation ≥1 mmol/L, after multiple factor adjustment, the risk of MACE increased by 8% within 30 days ( OR=1.08, 95% CI: 0.71-1.65); Compared with FPG-VS<20%, FPG-VS≥80% increased the risk of MACE within 30 days by 33% ( OR=1.33, 95% CI: 0.21-8.25, P<0.01), while the correlation between VIM and FPG-M and the risk of MACE within 30 days was 1.65(95% CI: 0.96-2.83) and 1.15(95% CI: 0.98-1.35), respectively (all P>0.05). Conclusions:High FPG-VS is associated with the recent MACE risk in STEMI patients who do not meet HbA 1c standards. After reaching HbA 1c standards, FPG-VS remains an independent MACE risk factor.

Value of cytotoxic T lymphocyte and natural killer cell levels in prognosis evaluation of patients with ST-elevation myocardial infarction / 中国基层医药

Objective:To analyze the value of cytotoxic T lymphocyte and natural killer cell levels in prognosis evaluation of patients with ST-elevation myocardial infarction (STEMI).Methods:A total of 158 patients with STEMI who underwent percutaneous coronary intervention in The Second People's Hospital of Liaocheng from September 2020 to August 2021 were included in this study. The ratio of cytotoxic T lymphocytes to natural killer cells was measured immediately after admission and 48 hours after surgery. These patients were followed up for 1 month after treatment. They were divided into the adverse cardiovascular event group (occurrence group) and no adverse cardiovascular event group (non-occurrence group) according to the occurrence of cardiovascular adverse events. The influential factors of the prognosis of STEMI and the correlation between the influential factors and STEMI were analyzed.Results:Among 158 patients with STEMI, 27 patients had adverse cardiovascular events, accounting for 17.09%. There were significant differences in systolic blood pressure, left ventricular ejection fraction, and low-density lipoprotein levels between the occurrence and non-occurrence groups ( t = 2.82, 4.27, 2.32, all P < 0.05). At 48 hours after surgery, the levels of cytotoxic T lymphocytes [(22.75 ± 8.39)%, (29.23 ± 4.61)%] and natural killer cells [(13.73 ± 4.64)%, (20.64 ± 4.52)%] in the peripheral blood in the occurrence and non-occurrence groups were significantly decreased compared with before surgery [ t = -5.05, -83.68, -142.71, -7 084.80, all P < 0.001]. Before and 48 hours after surgery, the levels of cytotoxic T lymphocytes [(27.47 ± 3.35)%, (22.75 ± 8.39)%] and natural killer cells [(21.42 ± 4.36)%, (13.73 ± 4.64)%] in the peripheral blood in the occurrence group were significantly lower than those in the non-occurrence group ( t = 7.68, 13.10, 4.16, 5.76, all P < 0.001). Univariate analysis showed that preoperative cytotoxic T lymphocytes < 27.47%, preoperative natural killer cells < 21.42%, left ventricular ejection fraction, and low-density lipoprotein may be the risk factors that affect the prognosis of patients with STEMI ( P < 0.000, 0.012, 0.019, 0.033). Cox regression analysis showed that preoperative cytotoxic T lymphocytes < 27.47% and preoperative natural killer cells < 21.42% were independent risk factors affecting the prognosis of patients with STEMI (both P < 0.001). Conclusion:Reduced levels of baseline cytotoxic T lymphocytes and natural killer cells in patients with STEMI suggest an increased risk of poor prognosis.