Infarto Agudo al Miocardio con Arterias Coronarias sin Lesiones Obstructivas (MINOCA): Características clínicas de pacientes

Introducción: El término MINOCA (Myocardial Infarction with Non-Obstructive Coronary Arteries) ha cobrado relevancia como diagnóstico de trabajo en el contexto de pacientes con sospecha de isquemia miocárdica y estudio coronario sin lesiones obstructivas. Objetivos: Describir las distintas etiologías y variables clínicas de pacientes con MINOCA hospitalizados en la unidad coronaria de nuestro centro (Hospital de la P Universalidad de Chile) Métodos: Estudio observacional retrospectivo en el que se realizó un análisis descriptivo de las variables estudiadas. Además, se analizó el uso de los métodos de imágenes complementarios y otras variables pronósticas. El seguimiento se realizó dentro del primer año posterior al evento. Resultados: El diagnóstico etiológico más frecuente de los pacientes con MINOCA fue el de miocardiopatía por estrés (MCE). Se incluyeron 55 pacientes, 55% de ellos mujeres. La edad promedio fue 57 años y la frecuencia de factores de riesgo cardiovascular clásicos (FRCV) fue baja. En los pacientes con MCE se observó menores niveles de troponina ultrasensible; mayores niveles de NT-proBNP y mayor mortalidad en comparación a otras etiologías. Conclusiones: El perfil de pacientes con MINOCA hospitalizados en nuestro centro correspondió predominantemente a mujeres postmenopáusicas con baja frecuencia de FRCV. La mortalidad de los pacientes con MINOCA se concentró en el grupo con MCE.

Background: MINOCA (acronym for "Myocardial Infarction with Non-Obstructive Coronary Arteries") is relevant as a working guide in the diagnosis of patients with suspicion of ischemia and absence of obstructive coronary artery disease. Aim: to describe the different causes and clinical variables in patients with MINOCA admitted to a coronary care unit of a University hospital in Santiago, Chile. Methods: this is an observational retrospective analysis of relevant clinical variables in 55 patients finally diagnosed as having MINOCA. Use of image based studies and characteristics related to prognosis were also analyzed. Follow up extended for one year after the event. Results: 55 patients were included, 55% of them women. Mean age was 57 years; presence of traditional risk factors for myocardial infarction was low. The most common eventual etiologic diagnosis was Stress Cardiomyopathy (SCM) in which lower levels of ultrasensitive troponin and higher levels of NT-proBNP were observed. Mortality in SCM was higher than that observed in other etiologies. Conclusion: MINOCA was more frequent in post menopausal women. Mortality was greater in patients with SMC.

Monitoring cardiac amyloidosis with multimodality imaging.

Cardiac amyloidosis (CA) refers to an infiltrative process involving amyloid fibril deposition in the myocardium causing restrictive cardiomyopathy. While various types can affect the heart, the predominant forms are immunoglobulin light-chain (AL) amyloidosis and transthyretin (ATTR) amyloidosis. This review article explores the expanding field of imaging techniques used to diagnose AL-CA and ATTR-CA, highlighting their usefulness in prognostication and disease surveillance. Echocardiography is often the initial imaging modality to suspect CA and, since the incorporation of nonbiopsy criteria using bone scintigraphy, diagnosing ATTR-CA has become more attainable following exclusion of plasma cell dyscrasia. Cardiac magnetic resonance is progressively emerging as a vital tool for imaging CA, and is used in diagnosis, prognostication, and disease surveillance. The use of cardiac magnetic resonance in AL-CA is discussed, as it has been shown to accurately evaluate organ response to chemotherapy. As novel drug treatments emerge in the realm of ATTR-CA, the use of cardiovascular imaging surveillance to monitor disease progression is discussed, as it is gaining prominence as a critical consideration. The ongoing phase III trials investigating treatments for patients with ATTR-CA, will undoubtedly enhance our understanding of cardiac imaging surveillance.

Timing of cardiac magnetic resonance and diagnostic yield in patients with myocardial infarction with nonobstructive coronary arteries.

INTRODUCTION AND OBJECTIVES: The present study sought to establish the diagnostic yield of cardiovascular magnetic resonance (CMR) in a large cohort of patients admitted with myocardial infarction (MI) with nonobstructive coronary artery disease (MINOCA) based on the timing of referral to CMR. METHODS: Consecutive patients referred to CMR from January 2009 to February 2022 with a working diagnosis of MINOCA were retrospectively evaluated. Cine, T2-weighted, early, and late gadolinium-enhanced images were acquired and analyzed. The frequency of the underlying diagnosis and the association between timing of CMR and relative frequency of each diagnosis were assessed. RESULTS: We included 207 patients (median age 50 years, 60% men). Final diagnosis after CMR was achieved in 91% of the patients (myocarditis in 45%, MI in 20%, tako-tsubo cardiomyopathy in 19%, and other cardiomyopathies in 7%). The performance of CMR within 7 days of admission with MINOCA (median, 5 days; 117 patients) allowed a higher diagnostic yield compared with CMR performed later (median, 10 days; 88 patients) (96% vs 86%, P=.02). Although myocarditis was the most frequent diagnosis in both groups according to time to CMR, its frequency was higher among patients with a CMR performed within the first 7 days (53% vs 35%, P=.02). The frequency of other underlying diagnoses was not influenced by CMR timing. CONCLUSIONS: CMR led to an underlying diagnosis of MINOCA in 91% of patients and its diagnostic yield increased to 96% when CMR was performed within 7 days of admission. The most frequent diagnosis was myocarditis..

Prevalence and pattern of myocardial involvement on cardiac magnetic resonance imaging in Takayasu arteritis and its relationship with disease activity.

BACKGROUND: Cardiac involvement in Takayasu arteritis (TA) is the major cause of morbidity and mortality. Cardiovascular magnetic resonance (CMR) is an excellent modality for the assessment of myocardial involvement. Studies have shown myocardial involvement in 25%-27% of patients. OBJECTIVES: To evaluate the prevalence and pattern of myocardial involvement in TA on CMR. We also evaluated any correlation between CMR changes and disease activity score (ITAS 2010 and ITAS-A) assessed at the time of CMR. METHODS: Patients classified as Takayasu arteritis according to Sharma et al. criteria were enrolled in the study. Demographic, clinical, and laboratory data were documented in the predesigned proforma. CMR was performed on a dedicated cardiac 3Tesla MR machine. Disease activity was recorded by ITAS2010 and ITAS-A. RESULTS: A total of 37 TA patients were included. Mean (±SD) age was 29±11 years. Female to male ratio was 3:1. Five patients (14%) had myocardial involvement on CMR. Two (2/5) had myocarditis and three (3/5) patients had features of ischaemic myocardial fibrosis. CONCLUSION: The myocardium is affected in TA, however the prevalence of subclinical myocardial involvement in our study was less (8% vs. 25%-27%) compared to the previous studies. Myocardial involvement trends towards early age of onset, less disease duration, lack of classical risk factors, and more with disease activity.

Prevalence and pattern of myocardial involvement on cardiac magnetic resonance imaging in Takayasu arteritis and its relationship with disease activity / Prevalencia y patrón de afectación miocárdica en la resonancia magnética cardíaca en la arteritis de Takayasu y su relación con la actividad de la enfermedad

Background: Cardiac involvement in Takayasu arteritis (TA) is the major cause of morbidity and mortality. Cardiovascular magnetic resonance (CMR) is an excellent modality for the assessment of myocardial involvement. Studies have shown myocardial involvement in 25%–27% of patients. Objectives: To evaluate the prevalence and pattern of myocardial involvement in TA on CMR. We also evaluated any correlation between CMR changes and disease activity score (ITAS 2010 and ITAS-A) assessed at the time of CMR. Methods: Patients classified as Takayasu arteritis according to Sharma et al. criteria were enrolled in the study. Demographic, clinical, and laboratory data were documented in the predesigned proforma. CMR was performed on a dedicated cardiac 3Tesla MR machine. Disease activity was recorded by ITAS2010 and ITAS-A. Results: A total of 37 TA patients were included. Mean (±SD) age was 29±11 years. Female to male ratio was 3:1. Five patients (14%) had myocardial involvement on CMR. Two (2/5) had myocarditis and three (3/5) patients had features of ischaemic myocardial fibrosis. Conclusion: The myocardium is affected in TA, however the prevalence of subclinical myocardial involvement in our study was less (8% vs. 25%–27%) compared to the previous studies. Myocardial involvement trends towards early age of onset, less disease duration, lack of classical risk factors, and more with disease activity.(AU)

Antecedentes: La afectación cardíaca en la arteritis de Takayasu (AT) es la principal causa de morbmortalidad. La resonancia magnética cardiovascular (RMC) es una modalidad excelente para la evaluación de la afectación miocárdica. Los estudios han demostrado afectación del miocardio en el 25-27% de los pacientes. Objetivos: Evaluar la prevalencia y patrón de afectación miocárdica en AT en RMC. También se evaluó cualquier correlación entre los cambios de RMC y la puntuación de actividad de la enfermedad (ITAS 2010 e ITAS-A) evaluada en el momento de la RMC. Métodos: Pacientes clasificados como arteritis de Takayasu según los criterios de Sharma et al. se inscribieron en el estudio. Los datos demográficos, clínicos y de laboratorio se documentaron en el formulario prediseñado. La RMC se realizó en una máquina de RM cardíaca de 3 Tesla dedicada. La actividad de la enfermedad fue registrada por ITAS 2010 e ITAS-A. Resultados: Se incluyeron un total de 37 pacientes con AT. La edad media (±DE) fue de 29±11 años. La proporción de mujeres a hombres fue de 3:1. Cinco pacientes (14%) tenían afectación miocárdica en la RMC. Dos (2/5) tenían miocarditis y 3 (3/5) pacientes tenían características de fibrosis miocárdica isquémica. Conclusión: El miocardio es afectado en la AT, sin embargo, la prevalencia de afectación miocárdica subclínica en nuestro estudio fue menor (8% vs. 25-27%) en comparación con los estudios previos. La afectación miocárdica tiende hacia una edad de inicio temprana, menor duración de la enfermedad, falta de factores de riesgo clásicos y más con la actividad de la enfermedad.(AU)

Evaluación de la función ventricular en la hipertensión pulmonar por resonancia magnética cardíaca / Evaluation of ventricular function in pulmonary hypertension by cardiac magnetic resonance

Resumen Objetivo: Evaluar la función del ventrículo derecho (VD) e izquierdo (VI) en la hipertensión pulmonar (HP) mediante resonancia magnética cardíaca (RMC). Material y métodos: En pacientes con (grupo HP; n = 9) y sin (grupo control; n = 9) HP se evaluó volumen telediastólico (VTD) y telesistólico (VTS) y fracción de eyección (FE) de ventrículo derecho (VD) e izquierdo (VI), área de aurícula derecha (AD) e izquierda y diámetro de arteria pulmonar (AP). Resultados: En HP, el VD presentó mayor VTD y VTS y menor FE (HP 52 ± 5% vs. control 64 ± 2%; p < 0,05). Solo en HP se observó movimiento anormal del tabique interventricular y realce tardío en los puntos de inserción del VD en VI. En HP aumentó el área de AD y el diámetro de AP. En VD, solo en HP, la FE se correlacionó negativamente con VTD (Pearson r: –0,8290; p < 0,01) y VTS (Pearson r: –0,7869; p < 0,05). Conclusiones: La evaluación de pacientes con HP mediante RMC demuestra alteraciones fisiológicas y anatómicas de las cavidades derechas con disminución de la FE del VD que también afecta la interrelación VD/VI. Se recalca la importancia de una evaluación temprana y secuencial del VD con RMC para valorar la mejor estrategia terapéutica para cada caso en particular.

Abstract Objective: To evaluate the function of the right ventricle (RV) and left ventricle (LV) in pulmonary hypertension (PH) through cardiac magnetic resonance imaging (CMR). Material and method: In patients with (PH group; n = 9) and without PH (control group; n = 9), end-diastolic volume (EDV) and end-systolic volume (ESV) and ejection fraction (EF) of right (RV) and left (LV) ventricle, area of the right (RA) and left (LA) atrium and diameter of the pulmonary artery (PA) were evaluated. Results: In PH, the RV increased EDV and ESV and decreased EF (PH: 52 ± 5% vs. control: 64 ± 2%; p < 0.05). Abnormal movement of the interventricular septum and late enhancement in the insertion points of the RV in the LV were only observed in HP. HP increased the area of RA and the diameter of PA. In LV, only in HP, EF was negatively correlated with EDV (Pearson r: –0.8290; p < 0.01) and ESV (Pearson r: –0.7869; p < 0.05). Conclusions: CMR evaluation of patients with PH demonstrates physiological and anatomical alterations of the right cavities with decreased EF in RV that also affects the RV/LV interrelationship. The importance of an early and sequential evaluation of the RV with CMR is emphasized to assess the best therapeutic strategy for each particular case.

Índice de resistencia microcirculatoria y obstrucción microvascular en la resonancia magnética cardiaca tras un IAMCEST / Functional angiography-derived index of microcirculatory resistance validated with microvascular obstruction in cardiac magnetic resonance after STEMI

Introducción y objetivos El índice de resistencia microcirculatoria (IRM) medido tras una angioplastia primaria (ICPp) por infarto agudo de miocardio con elevación del segmento ST (IAMCEST) se asocia con la aparición de obstrucción microvascular (OMV) y eventos clínicos adversos. Para evaluar la OMV tras una ICPp exitosa por IAMCEST sin guías de presión ni administración de agentes hiperémicos, variables que parecen limitar la adopción del IRM en el laboratorio de hemodinámica, se investiga la viabilidad y la utilidad de la medición del IRM mediante resonancia magnética cardiaca (RMC) (angio-IRM). Métodos El estudio incluyó a 285 pacientes con IAMCEST sometidos a ICPp y RMC. Con un programa informático comercial, se calculó el angio-IRM del vaso culpable tras la ICPp exitosa. Se evaluaron la OMV, el tamaño del infarto y el índice de rescate miocárdico medidos una mediana de 3 [rango intercuartílico, 3-5] días después de la ICPp. Resultados De la población total, 154 pacientes (54,0%) mostraron valores de angio-IRM elevados (> 40 U) en el vaso culpable. La OMV fue significativamente más frecuente en los pacientes con angio-IRM> 40 U que en aquellos con angio-IRM ≤ 40 U (el 88,3 frente al 32,1%; p <0,001). El tamaño del infarto, la extensión de la OMV y el área en riesgo fueron significativamente mayores en los pacientes con angio-IRM> 40 U que con angio-IRM ≤ 40 U (p <0,001 para todas las comparaciones). El angio-IRM mostró una capacidad de discriminación de OMV significativamente mayor que el grado de flujo TIMI o de blush miocárdico (área bajo la curva, 0,821, 0,504 y 0,496 respectivamente; p <0,001). Conclusiones El angio-IRM se asoció significativamente con el tamaño del infarto, la extensión de la OMV y el área en riesgo. Cifras altas del angio-IRM (> 40 U) tras una ICPp por IAMCEST fueron muy predictivas de OMV en la RMC (AU)

Introduction and objectives The index of microcirculatory resistance (IMR) measured after primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI) is associated with microvascular obstruction (MVO) and adverse clinical events. To evaluate MVO after successful primary PCI for STEMI without pressure wires or hyperemic agents, we investigated the feasibility and usefulness of functional angiography-derived IMR (angio-IMR). Methods The current study included a total of 285 STEMI patients who underwent primary PCI and cardiac magnetic resonance (CMR). Angio-IMR of the culprit vessel after successful primary PCI was calculated using commercial software. MVO, infarct size, and myocardial salvage index were assessed using CMR, which was obtained a median of 3.0 days [interquartile range, 3.0-5.0] after primary PCI. Results Among the total population, 154 patients (54.0%) showed elevated angio-IMR (> 40 U) in the culprit vessel. MVO was significantly more prevalent in patients with angio-IMR> 40 U than in those with angio-IMR ≤ 40 U (88.3% vs 32.1%, P <.001). Infarct size, extent of MVO, and area at risk were significantly larger in patients with angio-IMR> 40 U than in those with angio-IMR ≤ 40 U (P <.001 for all). Angio-IMR showed a significantly higher discriminatory ability for the presence of MVO than thrombolysis in myocardial infarction flow grade or myocardial blush grade (area under the curve: 0.821, 0.504, and 0.496, respectively, P <.001). Conclusions Angio-IMR was significantly associated with CMR-derived infarct size, extent of MVO, and area at risk. An elevated angio-IMR (> 40 U) after primary PCI for STEMI was highly predictive of the presence of MVO in CMR (AU)

Afección pericárdica y miocárdica tras infección por SARS-CoV-2: estudio descriptivo transversal en trabajadores sanitarios / Pericardial and myocardial involvement after SARS-CoV-2 infection: a cross-sectional descriptive study in healthcare workers

Introducción y objetivos Las secuelas cardiacas tras la infección por SARS-CoV-2 todavía están poco documentadas. Se realizó un estudio transversal en trabajadores sanitarios para estudiar la prevalencia de afección pericárdica y miocárdica tras la infección por SARS-CoV-2. Métodos Se estudió a 139 trabajadores sanitarios con infección previa confirmada por SARS-CoV-2. Los participantes se sometieron a evaluación clínica, electrocardiograma, laboratorio, incluido el perfil de células inmunitarias, y resonancia magnética cardiaca (RMC). El diagnóstico clínico de pericarditis se realizó ante la presencia de los criterios clásicos y el diagnóstico clínico de miocarditis ante la presencia de al menos 2 criterios de RMC. Resultados La mediana de edad fue de 52 (41–57) años, el 71,9% eran mujeres, y el 16,5% había sido hospitalizado previamente por neumonía por COVID-19. En la evaluación (10,4 [9,3–11,0] semanas después de los síntomas de infección), todos los participantes presentaban estabilidad hemodinámica. El 41,7% presentaba dolor torácico, disnea o palpitaciones; el 49,6%, alteraciones electrocardiográficas; el 7,9%, elevación de NT-proBNP; el 0,7%, elevación de troponina; y el 60,4%, alteraciones en la RMC (AU)

Introduction and objectives The cardiac sequelae of SARS-CoV-2 infection are still poorly documented. We conducted a cross-sectional study in healthcare workers to report evidence of pericardial and myocardial involvement after SARS-CoV-2 infection. Methods We studied 139 healthcare workers with confirmed past SARS-CoV-2 infection. Participants underwent clinical assessment, electrocardiography, and laboratory tests, including immune cell profiling and cardiac magnetic resonance (CMR). Clinically suspected pericarditis was diagnosed when classic criteria were present and clinically suspected myocarditis was based on the combination of at least 2 CMR criteria. Results Median age was 52 (41-57) years, 71.9% were women, and 16.5% were previously hospitalized for COVID-19 pneumonia. On examination (10.4 [9.3-11.0] weeks after infection-like symptoms), participants showed hemodynamic stability. Chest pain, dyspnea or palpitations were present in 41.7% participants, electrocardiographic abnormalities in 49.6%, NT-proBNP elevation in 7.9%, troponin in 0.7%, and CMR abnormalities in 60.4%. A total of 30.9% participants met criteria for either pericarditis and/or myocarditis: isolated pericarditis was diagnosed in 5.8%, myopericarditis in 7.9%, and isolated myocarditis in 17.3%. Most participants (73.2%) showed altered immune cell counts in blood, particularly decreased eosinophil (27.3%; P<.001) and increased cytotoxic T cell numbers (17.3%; P <.001). Clinically suspected pericarditis was associated (P <.005) with particularly elevated cytotoxic T cells and decreased eosinophil counts, while participants diagnosed with clinically suspected myopericarditis or myocarditis had lower (P <.05) neutrophil counts, natural killer-cells, and plasma cells. Conclusions Pericardial and myocardial involvement with clinical stability are frequent after SARS-CoV-2 infection and are associated with specific immune cell profiles (AU)

Registro Nacional Argentino de Resonancia Cardíaca (RENAREC) / Argentine National Cardiac Magnetic Resonance Imaging Registry (RENAREC)

RESUMEN Introducción: La utilidad de la resonancia magnética cardíaca (RMC) ha crecido ampliamente en los últimos años, en los cuales se han publicado distintos registros internacionales sobre su uso e impacto clínico. Sin embargo, no contamos con este tipo de información en Argentina. Objetivo: Evaluar indicaciones, protocolos utilizados, seguridad y consecuencias terapéuticas de la RMC en la República Argentina. Material y métodos: Se diseñó un registro prospectivo a nivel nacional con recolección de datos demográficos, indicaciones de RMC, complicaciones asociadas, diagnósticos y consecuencias terapéuticas. Resultados: Participaron 34 centros de 10 provincias de Argentina (85% centros privados, 59% centros con internación). Se incluyeron 1131 pacientes (edad 54 ± 18 años, 61% varones). Las principales indicaciones para el estudio de RMC fueron la miocardiopatía hipertrófica (13,9%) y la arritmia ventricular (12,3%). El 99,7% de los estudios fueron reportados sin complicaciones. Los resultados más frecuentes de la RMC fueron: normal (31,2%), miocardiopatía no isquémica (14,7%), miocardiopatía isquémico-necrótica (11,6%) y miocardiopatía hipertrófica (8,9%). La sospecha clínica fue confirmada en el 23,6% de los casos y la RMC generó un diagnóstico nuevo no sospechado en el 48,7% de los casos. Las consecuencias terapéuticas más frecuentes fueron el alta hospitalaria (31,6%) seguida por el cambio en la medicación (28,1%). Conclusiones: La RMC es un estudio ampliamente utilizado en Argentina, principalmente en centros privados, con un número muy bajo de complicaciones. Las principales indicaciones son las miocardiopatías (hipertrófica y dilatada) y la arritmia ventricular, y provee un diagnóstico nuevo no sospechado en casi la mitad de los casos. Se requieren de otros estudios en el futuro para evaluar las implicancias clínicas y terapéuticas.

ABSTRACT Background: The usefulness of cardiac magnetic resonance imaging (MRI) has greatly increased in the last years. Different international registries have been published on its use; however, there is no data available from Argentina. Objective: The aim of this study was to evaluate different indications, protocols, safety and therapeutic consequences of cardiac MRI in Argentina. Methods: A prospective national registry was designed with collection of demographic data, indications for cardiac MRI, associated complications, diagnoses and therapeutic consequences. Results: A total of 34 centers from 10 provinces of Argentina (85% private and 59% with inpatient capacity) participated in the study, including 1131 patients (mean age 54±18 years and 61% males). The main indications for cardiac MRI were hypertrophic cardiomyopathy (13.9%), and ventricular arrhythmia (12.3%). In 99.7% of cases, no study complications were reported. The most frequent results of cardiac MRI were: normal (31.2%), non-ischemic cardiomyopathy (14.7%), ischemic-necrotic cardiomyopathy (11.6%) and hypertrophic cardiomyopathy (8.9%). Clinical suspicion was confirmed in 23.6% of cases and cardiac MRI generated an unsuspected new diagnosis in 48.7% of cases. The main therapeutic consequences were hospital discharge (31.6%) followed by change in medication (28.1%). Conclusions: Cardiac MRI is widely used in Argentina, mainly in private centers with a very low incidence of complications. Cardiomyopathies (hypertrophic and dilated) and ventricular arrhythmia are its main indication, and it provides a new unsuspected diagnosis in almost half of the cases. Further studies are required to assess its clinical and therapeutic impact.

Papel de la ecocardiografía speckle-tracking (rastreo de marcas) y la resonancia magnética cardíaca-feature tracking en la circulación de Fontan. Diferencias entre los ventrículos derecho e izquierdo / Speckle-tracking echocardiography and MCR-feature tracking in Fontan circulation. Differences between right and left ventricles

Resumen Introducción: En los pacientes con DCPT, la disfunción ventricular es inevitable, y más temprana en VU derechos. La deformación miocárdica por STE y RMC-FT parece promisoria. Objetivo: Analizar la función ventricular mediante STE y RMC-FT en pacientes con DCPT, en comparación con RMC convencional según la morfología del VU y la posible implicación en su diagnóstico temprano. Método: Se recogieron medidas del strain longitudinal y circunferencial por STE y RMC-FT, volúmenes ventriculares y FE por RMC en 64 pacientes con DCPT. Resultados: La morfología ventricular no se relacionó con disfunción por RMC. Los VU derechos tuvieron valores por STE y RMC-FT disminuidos respecto de los VU izquierdos, con FE similares. Existe correlación entre STE y RMC-FT, no equivalentes, con buena factibilidad y reproducibilidad. Conclusiones: La RMC-FT y el STE son técnicas útiles en el diagnóstico temprano y la vigilancia de la función ventricular en VU derechos con FE preservada.

Abstract Introduction: In patients with TCPC, the development of ventricular dysfunction is inevitable and is more precocious in SRVs. Myocardial deformation by STE and CMR-FT is promising. Objective: To analize ventricular function in patients with TCPC using STE and CMR-FT compared with conventional cMRI, depending on SV morphology, to determine their role in early diagnosis of ventricular dysfunction. Method: Sixty-four patients with TCPC were included. Longitudinal and circumferential strain by STE and CMR-FT and ventricular volume and EF were obtained. Results: Dysfunction analyzed by cMRI showed no association with ventricular morphology. SRVs had lower values in STE and CMR-FT compared with SLVs, with similar EF. While not equivalent, correlation was observed between the STE and the CMR-FT values, demonstrating good feasibility and reproducibility. Conclusion: The strain data in CMR-FT and STE could be useful for diagnosis and monitoring of ventricular function and as markers of early SRV dysfunction with preserved EF.

Estudio de la amiloidosis cardíaca por cardiorresonancia / Cardiac amyloidosis study by cardioresonance / Estudo da amiloidose cardíaca por cardiorressonância

Dada su epidemiología, la amiloidosis cardíaca se ha vuelto un desafío diagnóstico del siglo XXI. La resonancia cardíaca se ha transformado en una herramienta diagnóstica y pronóstica fundamental en la práctica clínica diaria. En este artículo de revisión resumimos el conocimiento, primero abordando la técnica en sí, desde protocolos generales a específicos para su diagnóstico. Posteriormente, y tomando estas herramientas, sistematizamos la utilidad diagnóstica, pronóstica y terapéutica, con base en la practicidad y evidencia científica más recientes, otorgando la posibilidad de utilizar y abordar desde un correcto diagnóstico por imagen diferentes aspectos de esta enfermedad prevalente.

Given its epidemiology, cardiac amyloidosis has become a diagnostic challenge of the twenty-first century. Cardiac resonance has become a fundamental diagnostic and prognostic tool in daily clinical practice. In this review article we summarize the knowledge, first addressing the technique itself, from general to specific protocols for its diagnosis. Subsequently, and taking this tool we systematize the diagnostic, prognostic, and therapeutic utility, based on the most recent practicality and scientific evidence, granting the possibility of using and addressing from a correct diagnostic imaging different aspect of this prevalent disease.

Dada a sua epidemiologia, a amiloidose cardíaca tornou-se um desafio do século XXI. A ressonância cardíaca tornou-se uma ferramenta diagnóstica e prognóstico fundamental na prática clínica diária. Neste artigo de revisão resumimos primeiro o conhecimento abordando a própria técnica, desde protocolos gerais até específicos para seu diagnóstico. Posteriormente, e tomando essa ferramenta sistematizamos a utilidade diagnóstica, prognóstica e terapêutica, com base na praticidade e evidência científica mais recentes, concedendo a possibilidade de utilização e abordagem de uma imagem diagnóstica correta de diferentes aspectos desta doença prevalente.

EpCAM y obstrucción microvascular en pacientes con un IAMCEST: estudio con resonancia magnética cardiaca / EpCAM and microvascular obstruction in patients with STEMI: a cardiac magnetic resonance study

Introducción y objetivos: La obstrucción microvascular (OMV) se asocia negativamente con la estructura cardiaca y el pronóstico de los pacientes tras un infarto agudo de miocardio con elevación del segmento ST (IAMCEST). El factor epithelial cell adhesion molecule (EpCAM), implicado en la cohesión de las células epiteliales, está poco estudiado en el contexto de la OMV. Por ello, el objetivo de este estudio es evaluar en una cohorte de pacientes con IAMCEST la asociación entre la concentración de EpCAM circulante con la extensión de la OMV, determinada por resonancia magnética cardiaca (RMC), y la función sistólica en fases crónicas. Métodos: Se incluyó prospectivamente a 106 pacientes con un primer IAMCEST tratados con angioplastia primaria percutánea. La concentración sérica de EpCAM se determinó 24h tras la reperfusión coronaria. Se estudió a todos los pacientes mediante RMC a la semana y a los 6 meses del IAMCEST. Se evaluó la correlación entre los valores de EpCAM circulante con la OMV, los índices de función sistólica y la fracción de eyección del ventrículo izquierdo. Resultados: La media de edad de la cohorte era 59±13 años y el 76% eran varones. Se dicotomizó a los pacientes según la mediana de EpCAM (4,48 pg/ml). Se observó que los pacientes que tenían valores más bajos de EpCAM presentaban una mayor extensión de la OMV (p=0,021) y un mayor tamaño de infarto (p=0,019) en los estudios de RMC realizados 1 semana después del evento cardiovascular. Respecto a las variables de presentación, la concentración de EpCAM se asoció significativamente con la presencia de OMV en análisis de regresión logística binaria univariable (OR=0,58; IC95%, 0,38-0,88; p=0,011) y multivariable (OR=0,55; IC95%, 0,35-0,87; p=0,010). A pesar de que la OMV tiende a resolverse espontáneamente en fases crónicas, unos valores más bajos de EpCAM se correlacionaron con una peor función sistólica (AU)

Introduction and objectives: Microvascular obstruction (MVO) is negatively associated with cardiac structure and worse prognosis after ST-segment elevation myocardial infarction (STEMI). Epithelial cell adhesion molecule (EpCAM), involved in epithelium adhesion, is an understudied area in the MVO setting. We aimed to determine whether EpCAM is associated with the appearance of cardiac magnetic resonance (CMR)-derived MVO and long-term systolic function in reperfused STEMI. Methods: We prospectively included 106 patients with a first STEMI treated with percutaneous coronary intervention, quantifying serum levels of EpCAM 24hours postreperfusion. All patients underwent CMR imaging 1 week and 6 months post-STEMI. The independent correlation of EpCAM with MVO, systolic volume indices, and left ventricular ejection fraction was evaluated. Results: The mean age of the sample was 59±13 years and 76% were male. Patients were dichotomized according to median EpCAM (4.48 pg/mL). At 1-week CMR, lower EpCAM was related to extensive MVO (P=.021) and larger infarct size (P=.019). At presentation, EpCAM values were significantly associated with the presence of MVO in univariate (OR, 0.58; 95%CI, 0.38-0.88; P=.011) and multivariate logistic regression models (OR, 0.55; 95%CI, 0.35-0.87; P=.010). Although MVO tends to resolve at chronic phases, decreased EpCAM was associated with worse systolic function: reduced left ventricular ejection fraction (P=.009) and higher left ventricular end-systolic volume (P=.043). Conclusions: EpCAM is associated with the occurrence of CMR-derived MVO at acute phases and long-term adverse ventricular remodeling post-STEMI

Functional angiography-derived index of microcirculatory resistance validated with microvascular obstruction in cardiac magnetic resonance after STEMI.

INTRODUCTION AND OBJECTIVES: The index of microcirculatory resistance (IMR) measured after primary percutaneous coronary intervention (PCI) for ST-segment elevation myocardial infarction (STEMI) is associated with microvascular obstruction (MVO) and adverse clinical events. To evaluate MVO after successful primary PCI for STEMI without pressure wires or hyperemic agents, we investigated the feasibility and usefulness of functional angiography-derived IMR (angio-IMR). METHODS: The current study included a total of 285 STEMI patients who underwent primary PCI and cardiac magnetic resonance (CMR). Angio-IMR of the culprit vessel after successful primary PCI was calculated using commercial software. MVO, infarct size, and myocardial salvage index were assessed using CMR, which was obtained a median of 3.0 days [interquartile range, 3.0-5.0] after primary PCI. RESULTS: Among the total population, 154 patients (54.0%) showed elevated angio-IMR (> 40 U) in the culprit vessel. MVO was significantly more prevalent in patients with angio-IMR> 40 U than in those with angio-IMR ≤ 40 U (88.3% vs 32.1%, P <.001). Infarct size, extent of MVO, and area at risk were significantly larger in patients with angio-IMR> 40 U than in those with angio-IMR ≤ 40 U (P <.001 for all). Angio-IMR showed a significantly higher discriminatory ability for the presence of MVO than thrombolysis in myocardial infarction flow grade or myocardial blush grade (area under the curve: 0.821, 0.504, and 0.496, respectively, P <.001). CONCLUSIONS: Angio-IMR was significantly associated with CMR-derived infarct size, extent of MVO, and area at risk. An elevated angio-IMR (> 40 U) after primary PCI for STEMI was highly predictive of the presence of MVO in CMR. This trial was registered at ClnicalTrialsgov (Identifier: NCT04828681).

Resonancia magnética cardiaca de estrés para predecir mortalidad y toma de decisiones: registro de 2.496 pacientes mayores con síndrome coronario crónico / Stress cardiac magnetic resonance for mortality prediction and decision-making: registry of 2496 elderly patients with chronic coronary syndrome

Introducción y objetivos: El tratamiento del paciente mayor con síndrome coronario crónico (SCC) es un reto. Se exploró el valor pronóstico y la utilidad para la toma de decisiones de la carga isquémica determinada mediante resonancia magnética cardiaca (RMC) de estrés con vasodilatador en pacientes mayores con SCC. Métodos: Se incluyó a 2.496 pacientes mayores de 70 años estudiados con una RMC de estrés con vasodilatador por SCC conocido o sospechado. La carga isquémica (número de segmentos con déficit de perfusión inducido por el estrés) se calculó siguiendo el modelo de 17 segmentos. Posteriormente se analizó de manera retrospectiva su asociación con la mortalidad por cualquier causa y el efecto de la revascularización guiada por la RMC. Resultados: Durante una mediana de seguimiento de 4,58 años, se registraron 430 muertes (17,2%). Una mayor carga isquémica fue un predictor independiente de mortalidad: razón de riesgos, 1,04; intervalos de confianza del 95%, 1,01-1,07 por cada segmento adicional isquémico; p=0,006). Esta asociación también ocurrió en los mayores de 80 años y en las mujeres (p<0,001). Se detectó una interacción entre la revascularización y la mortalidad hacia un efecto deletéreo a baja carga isquémica y un efecto protector en caso de isquemia grave. Conclusiones: La RMC de estrés es un valioso instrumento para la estratificación del riesgo de los pacientes de edad avanzada con SCC y puede contribuir a guiar la toma de decisiones en este contexto (AU)

Introduction and objectives: The management of elderly patients with chronic coronary syndrome (CCS) is challenging. We explored the prognostic value and usefulness for decision-making of ischemic burden determined by vasodilator stress cardiac magnetic resonance (CMR) imaging in elderly patients with known or suspected CCS. Methods: The study group comprised 2496 patients older than 70 years who underwent vasodilator stress CMR for known or suspected CCS. The ischemic burden (number of segments with stress-induced perfusion deficit) was calculated following the 17-segment model. Subsequently, we retrospectively analyzed its association with all-cause mortality and the effect of CMR-guided revascularization. Results: During a median follow-up of 4.58 years, there were 430 deaths (17.2%). A higher ischemic burden was an independent predictor of mortality (HR, 1.04; 95%CI, 1.01-1.07 for each additional ischemic segment; P=.006). This association was also found in patients older than 80 years and in women (P <.001). An interaction between revascularization and mortality was detected toward deleterious consequences at low ischemic burden and a protective effect in patients with extensive ischemia. Conclusions: Vasodilator stress CMR is a valuable tool to stratify risk in elderly patients with CCS and might be helpful to guide decision-making in this scenario (AU)

Pericardial and myocardial involvement after SARS-CoV-2 infection: a cross-sectional descriptive study in healthcare workers.

INTRODUCTION AND OBJECTIVES: The cardiac sequelae of SARS-CoV-2 infection are still poorly documented. We conducted a cross-sectional study in healthcare workers to report evidence of pericardial and myocardial involvement after SARS-CoV-2 infection. METHODS: We studied 139 healthcare workers with confirmed past SARS-CoV-2 infection. Participants underwent clinical assessment, electrocardiography, and laboratory tests, including immune cell profiling and cardiac magnetic resonance (CMR). Clinically suspected pericarditis was diagnosed when classic criteria were present and clinically suspected myocarditis was based on the combination of at least 2 CMR criteria. RESULTS: Median age was 52 (41-57) years, 71.9% were women, and 16.5% were previously hospitalized for COVID-19 pneumonia. On examination (10.4 [9.3-11.0] weeks after infection-like symptoms), participants showed hemodynamic stability. Chest pain, dyspnea or palpitations were present in 41.7% participants, electrocardiographic abnormalities in 49.6%, NT-proBNP elevation in 7.9%, troponin in 0.7%, and CMR abnormalities in 60.4%. A total of 30.9% participants met criteria for either pericarditis and/or myocarditis: isolated pericarditis was diagnosed in 5.8%, myopericarditis in 7.9%, and isolated myocarditis in 17.3%. Most participants (73.2%) showed altered immune cell counts in blood, particularly decreased eosinophil (27.3%; P<.001) and increased cytotoxic T cell numbers (17.3%; P <.001). Clinically suspected pericarditis was associated (P <.005) with particularly elevated cytotoxic T cells and decreased eosinophil counts, while participants diagnosed with clinically suspected myopericarditis or myocarditis had lower (P <.05) neutrophil counts, natural killer-cells, and plasma cells. CONCLUSIONS: Pericardial and myocardial involvement with clinical stability are frequent after SARS-CoV-2 infection and are associated with specific immune cell profiles.

Stress cardiac magnetic resonance for mortality prediction and decision-making: registry of 2496 elderly patients with chronic coronary syndrome.

INTRODUCTION AND OBJECTIVES: The management of elderly patients with chronic coronary syndrome (CCS) is challenging. We explored the prognostic value and usefulness for decision-making of ischemic burden determined by vasodilator stress cardiac magnetic resonance (CMR) imaging in elderly patients with known or suspected CCS. METHODS: The study group comprised 2496 patients older than 70 years who underwent vasodilator stress CMR for known or suspected CCS. The ischemic burden (number of segments with stress-induced perfusion deficit) was calculated following the 17-segment model. Subsequently, we retrospectively analyzed its association with all-cause mortality and the effect of CMR-guided revascularization. RESULTS: During a median follow-up of 4.58 years, there were 430 deaths (17.2%). A higher ischemic burden was an independent predictor of mortality (HR, 1.04; 95%CI, 1.01-1.07 for each additional ischemic segment; P=.006). This association was also found in patients older than 80 years and in women (P <.001). An interaction between revascularization and mortality was detected toward deleterious consequences at low ischemic burden and a protective effect in patients with extensive ischemia. CONCLUSIONS: Vasodilator stress CMR is a valuable tool to stratify risk in elderly patients with CCS and might be helpful to guide decision-making in this scenario.

EpCAM and microvascular obstruction in patients with STEMI: a cardiac magnetic resonance study.

INTRODUCTION AND OBJECTIVES: Microvascular obstruction (MVO) is negatively associated with cardiac structure and worse prognosis after ST-segment elevation myocardial infarction (STEMI). Epithelial cell adhesion molecule (EpCAM), involved in epithelium adhesion, is an understudied area in the MVO setting. We aimed to determine whether EpCAM is associated with the appearance of cardiac magnetic resonance (CMR)-derived MVO and long-term systolic function in reperfused STEMI. METHODS: We prospectively included 106 patients with a first STEMI treated with percutaneous coronary intervention, quantifying serum levels of EpCAM 24hours postreperfusion. All patients underwent CMR imaging 1 week and 6 months post-STEMI. The independent correlation of EpCAM with MVO, systolic volume indices, and left ventricular ejection fraction was evaluated. RESULTS: The mean age of the sample was 59±13 years and 76% were male. Patients were dichotomized according to median EpCAM (4.48 pg/mL). At 1-week CMR, lower EpCAM was related to extensive MVO (P=.021) and larger infarct size (P=.019). At presentation, EpCAM values were significantly associated with the presence of MVO in univariate (OR, 0.58; 95%CI, 0.38-0.88; P=.011) and multivariate logistic regression models (OR, 0.55; 95%CI, 0.35-0.87; P=.010). Although MVO tends to resolve at chronic phases, decreased EpCAM was associated with worse systolic function: reduced left ventricular ejection fraction (P=.009) and higher left ventricular end-systolic volume (P=.043). CONCLUSIONS: EpCAM is associated with the occurrence of CMR-derived MVO at acute phases and long-term adverse ventricular remodeling post-STEMI.

Resonancia magnética cardiaca: utilidad de la secuencia de realce tardío 3D (RT-3D) en electrofisiología / Cardiac magnetic resonance: usefulness of the 3D late enhancement sequence (RT-3D) in electrophysiology

Resumen La resonancia magnética cardiaca permite una evaluación integral del corazón, provee información de funcionalidad, anatómica y de caracterización tisular, y permite la valoración de la perfusión miocárdica. Entre las secuencias de caracterización tisular se encuentra el realce tardío, el cual ocurre en corazones con fibrosis, trastornos infiltrativos o procesos agudos como miocarditis o infarto agudo de miocardio. Para el área de la electrofisiología, la resonancia magnética cardiaca aporta una gran ayuda en el abordaje diagnóstico de las miocardiopatías isquémicas y no isquémicas, y apoyo para definir el pronóstico de los pacientes con miocardiopatías de acuerdo con la presencia o no de fibrosis miocárdica; además, como parámetro adicional ha demostrado utilidad para la adecuada toma de decisiones en el implante de cardiodesfibriladores en prevención primaria y el implante de terapia de resincronización cardiaca. También ha probado ser de utilidad como guía en la terapia de ablación de la aurícula y el ventrículo izquierdos, y el seguimiento posablación de venas pulmonares para detectar líneas discontinuas de ablación.

Abstract Cardiac magnetic resonance imaging allows a comprehensive evaluation of the heart, provides information on functionality, anatomy, tissue characterization and allows the evaluation of myocardial perfusion. Tissue characterization sequences include late enhancement, which occurs in hearts with fibrosis, infiltrative disorders, or in acute processes such as myocarditis or acute myocardial infarction. In the area of electrophysiology, cardiac magnetic resonance imaging is of great assistance in the diagnostic approach of ischemic and non-ischemic cardiomyopathies, supports in defining the prognosis of patients with cardiomyopathies according to the presence or absence of myocardial fibrosis, and also as an additional parameter that has been shown to be useful for taking adequate decisions in the implantation of cardioverter defibrillators in primary prevention and the implantation of cardiac resynchronization therapy. It has also proven to be useful as a guide in ablation therapy for the left atrium and left ventricle and its post-ablation monitoring of pulmonary veins to detect discontinuous lines of ablation.

Resonancia magnética cardíaca y seguimiento de futbolistas profesionales post COVID-19 / Cardiac magnetic resonance and follow up of professional soccer players recovering from COVID-19

Resumen La incidencia de compromiso cardíaco post COVID-19 en pacientes que cursaron la enfermedad asintomáticos o con síntomas leves no es bien conocida. Tampoco están claras las eventuales repercusiones cardíacas en el regreso al deporte de alto rendimiento. Se realizó un estudio observacional pros pectivo con evaluación mediante electrocardiograma, ecocardiograma Doppler y resonancia magnética cardiaca (RMC) a hombres futbolistas profesionales de nivel internacional que habían cursado COVID-19 asintomáticos o con síntomas leves; seguimiento 4 meses con participación en competencias nacionales e internacionales. Se incluyeron 24 futbolistas, edad media 27, (20-36). Nueve (37.5%) cursaron la enfermedad asintomáticos y 15 (62.5%) con síntomas leves. Los exámenes físicos, electro y ecocardiográficos no evidenciaron cardiopatía. Las RMCs mostraron espesores y volúmenes ventriculares acordes a deportistas de alto rendimiento. En las señales de T1, T2 y saturación grasa no se observó infiltración grasa ni signos de edema; sin realce tardío post inyección de gadolinio. Comenzaron sus entrenamientos entre 12 y 14 días post diagnóstico. Once (45.8%) participaron entre 4 y 6 encuentros internacionales de la Copa Libertadores de América. Los restantes 13 cumplieron con entrenamientos de alta intensidad y participaron en competencias de liga local. A 4 meses del diagnóstico nin guno de los futbolistas desarrolló eventos cardíacos y los entrenamientos y competencias fueron bien tolerados. Estos hallazgos sugieren la escasa repercusión cardiovascular de COVID-19 y la excelente tolerancia al ejercicio de alta intensidad realizado en forma precoz post COVID de deportistas jóvenes que cursaron la enfermedad asintomáticos o con síntomas leves.

Abstract The incidence of post-COVID-19 cardiac compromise is not well known. The eventual cardiac repercussions on a return to high-performance sport are unclear. A prospective observational study with evaluation by physical examination, electrocardiogram, Doppler echocardiogram and cardiac magnetic resonance imaging (CMR) was carried out in international level professional soccer players recovering from COVID-19 who had the disease asymptomatic or with mild symptoms. Four-month follow-up with participation in national and international competitions. Twenty-four soccer players were included, age 27.13 years (between 20 and 36). Nine (37.5%) had asymptomatic disease and 15 (62.5%) had mild symptoms. No athletes required hospitalization. Physical, electrocardiographic, and echocardiographic examinations did not reveal heart disease. CMRs showed ventricular thicknesses and volumes consistent with high-performance athletes. In T1, T2 and fat saturation signals, no fat infiltration or signs of edema were observed. No late enhancement after gadolinium injection. They began their training between 12 and 14 days after diagnosis. Eleven (45.8%) participated between 4 and 6 international matches of Libertadores de América International Cup. The remaining 13 completed high intensity training sessions and participated in local league competitions. At 4 months after diagnosis, none of the soccer players developed cardiac events and training and competitions were well tolerated. These findings suggest low cardiovascular impact of COVID 19 and excellent tolerance to early post-COVID high intensity exercise of young athletes recovering from the disease with no or mild symptoms.

Supradesnivel del segmento ST como forma de presentación atípica de un tumor cardíaco: rol diagnóstico de la multimodalidad de imagen / ST segment elevation as an atypical presentation of a cardiac tumor: diagnostic role of a multimodal imaging approach / Elevação do segmento ST como apresentação de tumor cardíaco: papel diagnóstico da multimodalidade de imagem

Los tumores cardíacos malignos son neoplasias poco frecuentes que pueden presentarse de diversas formas, lo que dificulta su diagnóstico. La ecocardiografía y la resonancia magnética cardíaca son técnicas fundamentales para el diagnóstico, la caracterización y la evaluación de su extensión tumoral. La identificación de la línea tumoral es esencial al iniciar un tratamiento oncológico dirigido. Si bien el "estándar de oro" para este fin es el estudio anatomopatológico (obtenido por biopsia o resección quirúrgica), en los casos en que esto no es posible, la resonancia magnética cardíaca es la técnica no invasiva que proporciona un mejor abordaje diagnóstico. El tratamiento de elección es la resección quirúrgica y el pronóstico, en general, es malo. Presentamos el caso de una paciente con un tumor cardíaco de presentación clínica atípica, en la que un abordaje imagenológico multimodal aporta información clave y complementaria para el diagnóstico y la caracterización tisular.

Malignant cardiac tumors are rare neoplasms that can present in various forms, making their diagnosis difficult. Echocardiography and cardiac magnetic resonance imaging are fundamental techniques for the diagnosis, characterization, and evaluation of tumor extension. Identification of the tumor line is essential when initiating targeted cancer therapy. Although the "gold standard" for this purpose is the pathological study (obtained by biopsy or surgical resection), in cases where this is not possible, cardiac resonance is the non-invasive technique that provides a better diagnostic approach. The treatment of choice is surgical resection and the prognosis is generally poor. We present the case of a patient with an atypical clinical presentation, in which a multimodal approach provides key and complementary information for tumor diagnosis and tissue characterization.

Os tumores cardíacos malignos são neoplasias raras que podem se apresentar de várias formas, dificultando seu diagnóstico. A ecocardiografia e a ressonância magnética cardíaca são técnicas fundamentais para o diagnóstico, caracterização e avaliação da extensão tumoral. A identificação da linha do tumor é essencial ao iniciar a terapia direcionada do câncer. Embora o "padrão ouro" para esse fim seja o estudo patológico (obtido por biópsia ou ressecção cirúrgica), nos casos em que isso não seja possível, a ressonância cardíaca é a técnica não invasiva que proporciona melhor abordagem diagnóstica. O tratamento de escolha é a ressecção cirúrgica e o pronóstico geralmente é ruim. Apresentamos o caso de uma paciente com apresentação clínica atípica, em que a abordagem multimodal fornece informações essenciais e complementares para o diagnóstico do tumor e caracterização do tecido.