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1.
ABC., imagem cardiovasc ; 36(1): e372, abr. 2023. tab.
Article in Portuguese | LILACS | ID: biblio-1451685

ABSTRACT

Fundamento: O exercício intenso e continuado em atletas provoca fenótipos de remodelamento adaptativo, cujos parâmetros podem ser avaliados pela ecocardiografia convencional, e de deformação miocárdica. Assim, foi comparado o remodelamento miocárdico em atletas do sexo feminino (grupo atletas) com mulheres sedentárias da mesma faixa etária (grupo-controle) e entre atletas com maior e menor tempo de treinamento. Métodos: Foram selecionadas 57 futebolistas femininas (grupo atletas) e 25 mulheres sadias sedentárias (grupocontrole). As atletas foram divididas em dois grupos: grupo principal, com 32 atletas, e grupo sub-17, com 25 atletas. Foram determinadas, através de ecocardiografia, as dimensões, a função sistólica e diastólica das câmaras cardíacas e a deformação miocárdica (strain longitudinal, circunferencial, radial e mecânica rotacional), utilizando a estatística Z com significância de p < 0,05. Resultados: A idade dos grupos atletas, controle, principal e sub-17 foi de 22,1±6,3; 21,2±5,0; 26,5±5,1; e 16,5±0,6, respectivamente. O peso, o índice de massa corporal e a frequência cardíaca foram menores no grupo atletas. A espessura das paredes, o índice de massa do ventrículo esquerdo (VE), o volume do átrio esquerdo (AE), a fração de ejeção e as dimensões do ventrículo direito (VD) foram maiores no grupo atletas, mas dentro de valores normais. A deformação miocárdica mostrou diminuição do strain radial, da rotação basal, da rotação apical e do twist, sugerindo mecanismo de reserva contrátil. Esses parâmetros foram menores no grupo principal, que também apresentava maior espessura das paredes, maior volume do AE e maior tamanho do VD, sugerindo que o aumento da reserva contrátil se relaciona com maior tempo de treinamento. Conclusões: As atletas do sexo feminino com treinamento intenso de longa duração apresentam remodelamento adaptativo das câmaras cardíacas e aumento da reserva contrátil observada em repouso, com esses parâmetros mais acentuados nas atletas com maior tempo de treinamento.(AU)


Background: Intense continuous exercise provokes adaptive remodeling phenotypes in athletes, the parameters of which can be evaluated through conventional echocardiography and myocardial deformation. We compared myocardial remodeling in female athletes (athlete group) with sedentary women of the same age range (control group) and between older and younger athletes. Methods: A total of 57 female soccer players and 25 healthy sedentary women were selected. The athlete group was subdivided into a main group and those under 17 years of age (< 17 group). The dimensions and systolic and diastolic function of the cardiac chambers and myocardial deformation (longitudinal and circumferential, as well as radial strain and rotational mechanics) was determined through echocardiography, using the Z statistic with a significance level of p< 0.05. Results: The mean age of the athlete, control, main, and < 17 groups was 22.1 (SD, 6.3); 21.2 (SD, 5.0); 26.5 (SD, 5.1); 16.5 (SD, 0.6) years, respectively. Weight, body mass index and heart rate were lower in the athlete group. Wall thickness, left ventricular mass index, left atrial (LA) volume, ejection fraction, and right ventricular dimensions were higher in athlete group, but remained within normal ranges. Regarding myocardial deformation, there was decreased radial strain, basal rotation, apical rotation, and twisting in the athlete group, suggesting a contractile reserve mechanism. These parameters were lesser in the main athlete group, who also had greater wall thickness, greater volume in the left atrium (LA) and larger size in the right ventricle (RV), suggesting that increased contractile reserve is related to longer time spent in the sport. Conclusions: In female athletes who had undergone intense long-term training, we observed adaptive remodeling of the cardiac chambers and increased contractile reserve (at rest), and these changes were more pronounced in those with longer involvement in the sport.(AU)


Subject(s)
Humans , Female , Adolescent , Adult , Athletes , Atrial Remodeling/physiology , Heart/physiopathology , Heart/diagnostic imaging , Echocardiography/methods , Sedentary Behavior , High-Intensity Interval Training/adverse effects , Global Longitudinal Strain/radiation effects
2.
ABC., imagem cardiovasc ; 36(1): e20230002, abr. 2023. ilus, tab
Article in Portuguese | LILACS | ID: biblio-1452586

ABSTRACT

A prática regular de esportes pode induzir adaptações no coração, sendo essa condição comumente chamada de "coração de atleta". As alterações observadas incluem dilatação das câmaras cardíacas, aumento da espessura miocárdica, melhora do enchimento ventricular, aumento da trabeculação do ventrículo esquerdo (VE), dilatação da veia cava inferior, entre outras. Essas alterações também podem ser observadas em algumas doenças cardíacas, como cardiomiopatia (CMP) dilatada, hipertrófica e outras. Dessa forma, os exames de imagem cardíaca são fundamentais na identificação dessas alterações e na diferenciação entre o "coração de atleta" e uma possível cardiopatia.(AU)


Exercise-induced adaptation may occur in amateur and professional athletes. This condition is commonly named "athlete's heart". The alterations observed include dilation of the heart chambers, increased myocardial thickness, improved ventricular filling, increased left ventricular trabeculation, dilation of the inferior vena cava, among others. These changes can also be observed in some heart diseases, such as dilated, hypertrophic and other cardiomyopathies (CMP). Thus, cardiac imaging tests are fundamental in identifying these alterations and in differentiating between "athlete's heart" and possible heart disease. (AU)


Subject(s)
Humans , Male , Female , Child , Adolescent , Adult , Cardiomyopathy, Dilated/diagnosis , Cardiomegaly, Exercise-Induced/physiology , Heart/anatomy & histology , Heart/diagnostic imaging , Echocardiography/methods , Magnetic Resonance Spectroscopy/methods , Radiography, Thoracic/methods , Echocardiography, Doppler/methods , Exercise/physiology , Electrocardiography/methods
4.
ABC., imagem cardiovasc ; 35(3): erer_07, 2022. ilus, tab
Article in Portuguese | LILACS | ID: biblio-1411516

ABSTRACT

A necessidade de examinar o coração com uma ferramenta tridimensional não é nova na ecocardiografia. O órgão complexo e dinâmico em estudo sempre exigiu o entendimento em três dimensões e em tempo real. Sem o recurso, o examinador precisa transformar as imagens em bidimensional para uma compreensão de volume que exige complexa interação de conhecimentos e aproximações. A invenção da tridimensão já contabiliza três décadas, e seu aprimoramento levou a produtos comerciais no início do século. Estudos demonstram, no mínimo, equivalência da tridimensão com ganhos no manuseio do tempo necessário. Utilizamos as modalidades Tri Plano na rotina com ganho de tempo e menor estresse do membro superior do examinador. A tridimensão pode responder perguntas mais complexas e auxilia em nossa abordagem mais geométrica da contração, sendo o espessamento analisado em segundo plano.(AU)


The need to examine the heart using a three-dimensional (3D) tool is not new. This complex and dynamic organ has always required 3D and real-time understanding. Without this feature, the examiner has to transform two-dimensional images to understand its volume, which requires complex knowledge and approximation interactions. Echocardiography was invented three decades ago, and its improvements resulted in commercial products at the beginning of the century. Some studies demonstrate 3D equivalence with gains in handling the necessary time. We use triplane modalities in our routine, with time gain and less stress on the examiner's upper limb. Thus, 3D examinations can answer more complex questions and provide a more geometric approach to contraction, with thickening being analyzed in the background. (AU)


Subject(s)
Humans , Cardiac Imaging Techniques/methods , Heart/anatomy & histology , Heart/diagnostic imaging , Echocardiography/methods , Magnetic Resonance Spectroscopy/methods , Echocardiography, Three-Dimensional/methods , Imaging, Three-Dimensional/methods , Echocardiography, Stress/methods
5.
Arq. bras. cardiol ; 118(2): 519-524, 2022. tab, graf
Article in English, Portuguese | LILACS | ID: biblio-1364326

ABSTRACT

Resumo A hiperativação do sistema nervoso simpático desempenha um papel central na fisiopatologia da hipertensão. O objetivo deste estudo foi avaliar a atividade simpática cardíaca e investigar o papel da cintigrafia miocárdica com metaiodobenzilguanidina com 123I ([123I] MIBG) na estratificação de risco cardiovascular de pacientes com hipertensão resistente tratados com denervação renal (DR). Dezoito pacientes foram incluídos neste estudo prospectivo (média de idade de 56 ± 10 anos, 27,8% mulheres). Ecocardiograma transtorácico, análise geral do sangue e cintilografia miocárdica com [(123I) MIBG] foram realizados antes e seis meses após a DR. Um paciente era considerado respondedor (R) se uma diminuição ≥ 5 mmHg na pressão arterial sistólica (PAS) média ambulatorial fosse observada no seguimento de seis meses. 66,7% dos pacientes foram R (diminuição na PAS de 20,6 ± 14,5 mmHg, vs. menos 8 ± 11,6 mmHg em não-respondedores (NR), p = 0,001). A relação coração-mediastino (RCM) inicial foi significativamente menor na linha basal no grupo R (1,6 ± 0,1 vs. 1,72 ± 0,1, p <0,02), mas semelhante em seis meses. Considerando os dois momentos no tempo, o grupo R teve valores iniciais de RCM mais baixos do que o grupo NR (p <0,05). Tanto o RCM tardio quanto a taxa de washout foram idênticos e nenhuma correlação significativa entre a resposta à DR ou qualquer índice de imagem com MIBG foi encontrada. A denervação renal efetivamente reduziu a pressão arterial na maioria dos pacientes, mas a imagem com [123I] MIBG não foi útil na previsão da resposta. Entretanto, houve evidência de overdrive do sistema nervoso simpático e, tanto a RCM inicial quanto tardia estavam reduzidas em geral, provavelmente colocando essa população em um risco maior de eventos adversos.


Abstract Hyperactivation of the sympathetic nervous system plays a central role in the pathophysiology of hypertension. The aim of this study was to assess cardiac sympathetic activity and investigate the role of myocardial123I-labelled meta-iodo benzyl guanidine ([123I] MIBG) scintigraphy in cardiovascular risk stratification of patients with resistant hypertension treated with renal denervation (RDN). Eighteen patients were included in this prospective study (mean age 56 ± 10 years old, 27.8% females). Transthoracic echocardiogram, general blood analysis and myocardial ([123I] MIBG scintigraphy were performed before and six-months after RDN. A patient was considered a responder (R) if a drop ≥ 5mmHg on mean systolic ambulatory blood pressure (BP) monitoring was observed at the six-month follow-up. 66.7% of patients were R (drop in systolic BP of 20.6 ± 14.5mmHg, vs minus 8 ± 11.6mmHg in non-responders (NR), p=0.001). Early heart-mediastinum ratio (HMR) was significantly lower at baseline in the R group (1.6 ± 0.1 vs 1.72 ± 0.1, p<0.02) but similar at six months. Considering both instants in time, the R group had lower early HMR values than the NR group (p<0.05). Both the late HMR and the washout rate were identical and no significant correlation between response to RDN or any MIBG imaging index was found. Renal denervation effectively lowered blood pressure in the majority of patients but [123I] MIBG was not useful in predicting the response. However, there was evidence of sympathetic overdrive and, both early and late HMR were overall reduced, probably putting this population at a higher risk of adverse events.


Subject(s)
Humans , Male , Female , Aged , Blood Pressure Monitoring, Ambulatory , 3-Iodobenzylguanidine , Sympathetic Nervous System/diagnostic imaging , Prospective Studies , Risk Assessment , Radiopharmaceuticals , Denervation , Heart/physiology , Heart/diagnostic imaging , Iodine Radioisotopes , Middle Aged
6.
Journal of Forensic Medicine ; (6): 351-357, 2021.
Article in English | WPRIM | ID: wpr-985224

ABSTRACT

Objective To study the correlation between the abdominal wall subcutaneous fat thickness and heart weight, so as to provide reference for prediction methods of normal range of heart weight that is suitable for autopsy in China. Methods The forensic pathology autopsy cases accepted by Center for Medicolegal Expertise of Sun Yat-sen University from 1998 to 2017 were collected. Then the exclusion criteria were determined, and according to them the total case group was selected, and the 6 disease groups and the normal group were further selected from the total case group. The rank sum test was used to compare the heart weight of the normal group and the disease groups to determine the influence of diseases on heart weight. Then the Spearman rank correlation analysis of abdominal wall subcutaneous fat thickness and heart weight in different genders and different ages in the total case group and the normal group was conducted to get the correlation coefficient (rs). Results In the total case group, correlation between abdominal wall subcutaneous fat thickness and heart weight was shown in males of all ages (P<0.05); while in females, the correlation had no statistical significance (P>0.05) in 15-<20 age and 50-<60 age, but was statistically significant (P<0.05) in other age groups. For the males in the normal group, rs was respectively 0.411, 0.541 and 0.683 in the 15-<40 age, the 40-<60 age, and the ≥60 age. For the females, rs was respectively 0.249 and 0.317 in the 15-<40 age and the 40-<60 age. The correlation in the ≥60 age had no statistical significance(P>0.05). Conclusion In the general population and the normal population, abdominal wall subcutaneous fat thickness is correlated with the heart weight of males. It is of significance to include the abdominal wall subcutaneous fat thickness in the prediction of normal range of heart weight for males in China.


Subject(s)
Female , Humans , Male , Middle Aged , Abdominal Wall/diagnostic imaging , China , Heart/diagnostic imaging , Reference Values , Subcutaneous Fat/diagnostic imaging
7.
ABC., imagem cardiovasc ; 34(3)2021. tab, graf
Article in Portuguese | LILACS | ID: biblio-1292025

ABSTRACT

Fundamento: A identificação precoce do dano miocárdico parece ser importante na abordagem do paciente com doença de Chagas. A ecocardiografia com strain obtida por speckle tracking e a avaliação da fibrose miocárdica por meio da ressonância magnética cardíaca podem ser métodos diagnósticos promissores nesse sentido. Objetivo: Avaliar o acometimento miocárdico especificamente na forma crônica cardíaca leve da doença de Chagas por meio do strain por speckle tracking e da fibrose miocárdica pela ressonância magnética cardíaca, além de suas correlações. Método: Estudo de corte transversal que analisou portadores da forma cardíaca crônica leve da doença de Chagas (fração de ejeção preservada) submetidos à ecocardiografia com strain por speckle tracking e à ressonância magnética cardíaca. Resultados: Foram incluídos 21 participantes (mulheres: 62%; idade: 54 ± 5 anos). A prevalência de fibrose miocárdica por meio do realce tardio miocárdico foi de 50%. O strain longitudinal global encontrava-se diminuído em 17 pacientes (81%), com mediana de 14,1% (intervalo interquartil de 12,1 a 16,3). Os valores do mapa T1 encontravam-se, em média, elevados nos portadores de doença de Chagas (993 ± 163 ms). O mapa T1 foi significativamente correlacionado com o strain longitudinal global (r= 0,634; p = 0,015). Além disso, o índice de dispersão mecânica, obtido por strain, estava aumentado (> 55 ms) em 84%, com a maior área sob a curva Característica de Operação do Receptor (área sob a curva de 0,696; intervalo de confiança de 95% de 0,412-0,981) para discriminação de fibrose pelo realce tardio miocárdico. Conclusão: O strain miocárdico e o mapa T1 se comportam como marcadores precoces do dano miocárdico na cardiopatia chagásica crônica leve. O índice de dispersão mecânica estava elevado e foi o parâmetro que melhor se correlacionou com o realce tardio miocárdico. (AU)


Background: The early identification of myocardial damage seems important in the management of patients with Chagas disease. However, it is unknown whether speckle tracking echocardiography strain and cardiac magnetic resonance imaging are promising methods for assessing myocardial involvement and fibrosis, respectively. Objective: To evaluate myocardial involvement in the mild chronic cardiac form of Chagas disease using speckle tracking strain and myocardial fibrosis by cardiac magnetic resonance and assess their correlations. Method: This cross-sectional study analyzed patients with the mild chronic cardiac form of Chagas disease (preserved ejection fraction) using speckle tracking echocardiography and cardiac magnetic resonance. Results: The study included 21 participants (women: 62%; age: 54 ± 5 years). The prevalence of myocardial fibrosis was 50% on delayed myocardial enhancement. The median global longitudinal strain was decreased (14.1%; interquartile range, 12.1­16.3%) in 17 patients (81%). The mean T1 mapping value was high in patients with Chagas disease (993 ± 163 ms). The T1 map was significantly correlated with the global longitudinal strain (r = 0.634; p = 0.015). In addition, the mechanical dispersion index obtained by strain was increased (>55 ms) by 84%, with the largest area under the receiver operating characteristic curve (area under the curve, 0.696; 95% confidence interval, 0.412­0.981) for fibrosis discrimination by delayed myocardial enhancement. Conclusion: Myocardial strain and T1 mapping are early markers of myocardial damage in mild chronic Chagas heart disease. The mechanical dispersion index was high and the most closely correlated with delayed myocardial enhancement. (AU)


Subject(s)
Humans , Male , Female , Middle Aged , Chagas Cardiomyopathy/physiopathology , Chagas Cardiomyopathy/diagnostic imaging , Heart/diagnostic imaging , Myocardium/pathology , Prognosis , Stroke Volume , Fibrosis , Magnetic Resonance Imaging , Echocardiography/methods , Linear Models , Chronic Disease , Cross-Sectional Studies , ROC Curve
8.
Repert. med. cir ; 30(1): 64-67, 2021. ilus.
Article in English, Spanish | LILACS, COLNAL | ID: biblio-1292233

ABSTRACT

La pseudodextrocardia se ha definido como un desplazamiento irregular del corazón y sus estructuras vasculares hacia la derecha por causas extracardiacas. Es un hallazgo ocasional en estudios imagenológicos de tórax o abdomen y varía acorde con las diferentes relaciones causales. Se presenta el caso de un paciente con una neumopatía crónica, quien a su ingreso presenta pseudodextrocardia como hallazgo incidental.


Pseudo-dextrocardia has been defined as an unusual displacement of the heart and its vascular structures to the right secondary to extracardiac causes. It is an occasional finding in thoracic or abdominal imaging studies and varies according to the various causal relationships. We report a case of pseudo-dextrocardia as an incidental finding in a patient admitted with chronic pulmonary disease.


Subject(s)
Humans , Male , Aged, 80 and over , Dextrocardia/diagnostic imaging , Heart/diagnostic imaging , Mediastinum/diagnostic imaging , Thorax , Dextrocardia
9.
Arch. cardiol. Méx ; 90(3): 274-283, Jul.-Sep. 2020. tab, graf
Article in Spanish | LILACS | ID: biblio-1131044

ABSTRACT

Resumen Objetivo: Comprobar las diferencias morfológicas y funcionales del corazón en dos poblaciones latinoamericanas con distintas características raciales y condiciones de vida. Métodos: Mediante el ecocardiograma transtorácico se obtuvieron datos de 206 personas: 103 del poblado de Atahualpa, Ecuador (nivel del mar, edad x̄ 75 ± 4.2 años, 53 mujeres) y 103 habitantes de la Ciudad de México (altitud de 2,300 m, edad x̄ 75 ± 4.2 años, 52 mujeres). Resultados: Las diferencias significativas entre Atahualpa y la Ciudad de México fueron frecuencia cardíaca, 66 vs. 80; diámetro diastólico ventricular izquierdo, 40.8 vs. 42.7; grosor del tabique, 9.8 vs. 11.6; pared posterior, 10.2 vs. 11.8; volumen-latido en centímetros cúbicos, 53.0 vs. 46.6; volumen auricular Izquierdo, 25.8 vs. 33.6; presión sistólica de la arteria pulmonar, 27.1 vs. 42.0; gasto cardíaco, 3.1 vs. 4.8; cociente E/Ea, 6.4 vs. 9.2; área mitral, 3.4 vs. 3.0. El comparativo de la función diastólica entre Atahualpa y la Ciudad de México fue: tipo 0: 2 vs. 1; tipo 1: 96 vs. 81; tipo 2: 5 vs. 20; tipo 3: 0 vs. 1. Conclusión: Las características ecocardiográficas que identifican los cambios adaptativos del corazón en Atahualpa coinciden con personas que viven a nivel del mar y con buena actividad física y en México con los habitantes de grandes altitudes y expuestos a contaminación ambiental. La función sistólica del ventrículo izquierdo fue similar en ambas poblaciones, lo que indica que los cambios adaptativos hacen posible que el corazón sea eficaz en diferentes circunstancias del ecosistema.


Abstract Objective: To compare morphological and functional differences of the heart in two Latin American populations with different ethnicity and living conditions. Methods: Using transthoracic echocardiogram we obtained data on 206 individuals: 103 from Atahualpa, Ecuador (living at sea level, mean age: 75 ± 4.2 years, 53 women) and 103 inhabitants from Mexico City (living at 2300 m above sea level, mean age: 75 ± 4.2 years, 52 women). Results: Significant differences between Atahualpa and Mexico were: Heart rate 66 versus 80 x’, left ventricular diastolic diameter 40.8 versus 42.7, septum thickness 9.8 versus 11.6, posterior wall 10.2 versus 11.8, stroke volume cc 53.0 versus 46.6, left atrial volume 25. 8 versus 33.6, systolic pressure of the pulmonary artery 27.1 versus 42.0, cardiac output 3.1 versus 4.8, E/Ea ratio 6.4 versus 9.2, and mitral area 3.4 versus 3.0. Comparison of diastolic function between Atahualpa and Mexico was: Type 0; 2 versus 1. Type 1; 96 versus 81. Type 2; 5 versus 20 and Type 3; 0 versus 1. Conclusion: Echocardiographic characteristics that identify adaptive changes of the heart in Atahualpa are coincident with people living at sea level and with good physical activity, and Mexico City, with inhabitants living at high altitudes and exposed to environmental pollution. The systolic function of the left ventricle was similar in both populations, indicating that adaptive changes allow the heart to be effective in different circumstances of the ecosystem.


Subject(s)
Humans , Male , Female , Middle Aged , Aged , Aged, 80 and over , Adaptation, Physiological/physiology , Echocardiography , Heart/diagnostic imaging , Exercise , Cross-Sectional Studies , Ecuador , Environmental Exposure/adverse effects , Environmental Pollution/adverse effects , Altitude , Mexico
10.
Article in Chinese | WPRIM | ID: wpr-879218

ABSTRACT

There are various examination methods for cardiovascular diseases. Non-invasive diagnosis and prognostic information acquisition are the current research hotspots of related imaging examinations. Positron emission tomography (PET)/magnetic resonance imaging (MRI) is a new advanced fusion imaging technology that combines the molecular imaging of PET with the soft tissue contrast function of MRI to achieve their complementary advantages. This article briefly introduces several major aspects of cardiac PET/MRI in the diagnosis of cardiovascular disease, including atherosclerosis, ischemic cardiomyopathy, nodular heart disease, and myocardial amyloidosis, in order to promote cardiac PET/MRI to be more widely used in precision medicine in this field.


Subject(s)
Humans , Heart/diagnostic imaging , Heart Diseases/diagnostic imaging , Magnetic Resonance Imaging , Multimodal Imaging , Positron-Emission Tomography
11.
Rev. Soc. Bras. Med. Trop ; 53: e20190457, 2020. tab, graf
Article in English | LILACS | ID: biblio-1092227

ABSTRACT

Abstract INTRODUCTION: Chagas disease is one of the most common diseases in Latin America and heart involvement is the main cause of death. This study aimed to determine differences in tissue Doppler imaging (TDI) parameters in the assessment left and right ventricular function in patients with the indeterminate form of Chagas disease compared to those in healthy controls. METHODS: We compared 194 patients with the indeterminate form of Chagas disease to 72 age-matched healthy individuals. We considered p-values <0.05 to be statistically significant. RESULTS: TDI analysis of the right ventricular (RV) showed lengthened isovolumic relaxation time (IRT) and higher RV index of myocardial performance (RIMP) and left ventricle (LV) index of myocardial performance (LIMP) in the Chagas group than in the control group, indicating RV and LV systolic and diastolic myocardial damage. TDI analysis of the myocardial velocities of the interventricular septum and the lateral wall of the LV also showed a systolic and diastolic myocardial damage. CONCLUSIONS: The study results demonstrated early LV systolic and diastolic myocardial damage in the RV and LV in patients with the indeterminate form of Chagas disease by TDI. These early findings of RV and LV dysfunction may help identify patients who will progress to heart failure during the disease course. TDI should be included in initial patient evaluations because it allows adequate follow-up and treatment.


Subject(s)
Humans , Male , Female , Adult , Chagas Disease/physiopathology , Ventricular Dysfunction, Left/physiopathology , Heart/physiopathology , Echocardiography , Echocardiography, Doppler , Case-Control Studies , Observer Variation , Chagas Disease/diagnostic imaging , Ventricular Dysfunction, Left/diagnostic imaging , Early Diagnosis , Heart/diagnostic imaging , Middle Aged
12.
Arch. cardiol. Méx ; 89(4): 393-398, Oct.-Dec. 2019. tab
Article in Spanish | LILACS | ID: biblio-1149098

ABSTRACT

Resumen Introducción: Aún existe controversia sobre la utilidad de la ecocardiografía funcional (EcoFn) en la valoración cardiovascular de neonatos críticamente enfermos. Objetivo: Analizar la utilidad de la EcoFn en la modificación de tratamiento en neonatos ingresados a una Unidad de Cuidados Intensivos Neonatales (UCIN). Material y métodos: Estudio prospectivo en una UCIN durante un año mediante EcoFn realizada por un cardiólogo capacitado en pacientes en sus primeras 72 horas de vida extrauterina, con valoración de la funcionalidad cardiaca y presencia de alteraciones estructurales. Con base en los hallazgos se analizaron las modificaciones al tratamiento. Resultados: 37 neonatos fueron evaluados con EcoFn en dos ocasiones: una diagnóstica y otra de seguimiento. En 11 (29.7%) se encontró daño estructural y funcional, en 9 (24.3%) solo funcional, en 7 (18.9%) solo estructural y en 10 (27%) no se observaron alteraciones. En el 70% se realizó al menos un cambio de tratamiento. Los cambios más frecuentes fueron modificaciones al apoyo ventilatorio (63%), seguido del apoyo aminérgico (19.5%) y modificaciones en el aporte de líquidos (10.8%). En todos los casos los cambios mejoraron las condiciones clínicas de los neonatos. Conclusiones: La EcoFn permitió determinar mejor las condiciones estructurales y hemodinámicas de los pacientes y realizar modificaciones terapéuticas más precisas.


Abstract Introduction: It is still controversy about the usefulness of functional echocardiography (FnEC) in critically ill neonates. Objective: To analyze the usefulness of the FnEC in the treatment decisions in neonates admitted to a Neonatal Intensive Care Unit (NICU). Materials and methods: A year prospective study in a NICU. A trained cardiologist performed a FnEC to 72 h of life patients to evaluate the cardiac function and heart structure. We analyzed the clinical decisions after the findings. Results: 37 neonates underwent two FnEC: at the diagnosis and at follow-up. Eleven patients (29.7%) had structural and functional abnormalities, 9 (24.3%) only functional, 7 (18.9%) only structural, and in the rest, 10 (27%), were normal. Al least one change in the management occurred in 70% of the patients. The main changes were to the ventilatory support (63%), followed by inotropic support (19.5%) and fluid intake (10.8%). In all changes, we observed an improvement in the clinical conditions of the neonates. Conclusions: The FnEC allowed to determinate the cardiovascular structures and hemodynamic conditions of the patients and make a more precise therapeutic modifications.


Subject(s)
Humans , Male , Female , Infant, Newborn , Infant , Echocardiography , Cardiovascular System/diagnostic imaging , Heart/diagnostic imaging , Heart Defects, Congenital/diagnostic imaging , Intensive Care Units, Neonatal , Prospective Studies , Cohort Studies , Follow-Up Studies , Critical Illness , Mexico
13.
Arch. cardiol. Méx ; 89(3): 222-232, jul.-sep. 2019. tab
Article in Spanish | LILACS | ID: biblio-1149071

ABSTRACT

Resumen Objetivo: El propósito de este estudio fue evaluar los cambios tempranos en la función miocárdica en niños con sobrepeso y obesidad, sin hipertensión arterial. Métodos: Estudio transversal en el que se incluyeron 150 participantes de ambos sexos entre 6 y 15 años. Se realizaron evaluaciones antropométricas, bioquímicas y de función ventricular mediante métodos ecocardiográficos convencionales y análisis de deformación miocárdica con ecocardiografía bidimensional speckle tracking. La comparación global entre los grupos de estudio (niños con peso normal, sobrepeso y obesidad) se llevó a cabo con la prueba de análisis de varianza (ANOVA) de una vía y análisis post hoc con corrección de Bonferroni para las comparaciones múltiples, y se consideró a los niños con peso normal como grupo de referencia. Resultados: La muestra final fue de 142 participantes, 50 (35%) con peso normal, 39 (28%) con sobrepeso y 53 (37%) con obesidad. El diámetro diastólico del ventrículo izquierdo (VI) y el septum interventricular, y el diámetro de la aurícula izquierda (AI) y la masa del VI fueron significativamente más altos en el grupo con obesidad en comparación con el grupo con peso normal. No se observaron diferencias significativas en los indicadores convencionales de la función sistólica y diastólica ventricular izquierda. Se observaron diferencias significativas en la deformación miocárdica regional entre los tres grupos. La media de deformación miocárdica longitudinal global fue más baja en los pacientes con obesidad (−20.9% vs. −23.5%; p menor 0.05) en comparación con los niños con peso normal. Conclusiones: La obesidad infantil se asoció a alteraciones en la deformación miocárdica, incluso en presencia de fracción de expulsión normal. La evaluación de la deformación miocárdica es relevante en los pacientes pediátricos con obesidad.


Abstract Objective: The purpose of this study was to evaluate early changes in myocardial function in overweight and obese children without hypertension. Methods: Cross-sectional study involving 150 participants of both sexes between 6 and 15 years old. Anthropometric and biochemical evaluations were performed. Ventricular function was assessed by conventional echocardiographic methods and myocardial deformation analysis by two-dimensional speckle tracking echocardiography. One-way analysis of variance was employed for the global comparison of study variables between groups (children with normal weight, overweight and obesity), and post hoc analysis with Bonferroni correction was used for multiple comparison, considering normal-weight children as the reference category. Results: Overall, 142 participants were included, 50 (35%) with normal weight, 39 (28%) overweight and 53 (37%) obesity. Diastolic diameter of the left ventricular (LV) and interventricular septum, diameter of the left atrium and LV mass were significantly higher in children with obesity compared to those with normal weight. No significant differences in the conventional indicators of LV systolic and diastolic function were found between groups. Significant differences in the regional myocardial deformation between the three groups were observed. Mean global longitudinal myocardial deformation was smaller in patients with obesity (−20.9% vs. −23.5%, p less 0.05) compared to children with normal weight. Conclusions: The childhood obesity was associated with altered myocardial deformation, even in the presence of normal ejection fraction. Myocardial deformation evaluation is relevant in the assessment of pediatric patients with obesity.


Subject(s)
Humans , Male , Female , Child , Adolescent , Echocardiography , Pediatric Obesity/complications , Heart/diagnostic imaging , Myocardium/pathology , Cross-Sectional Studies , Pediatric Obesity/epidemiology , Heart Ventricles/diagnostic imaging
14.
Arq. bras. cardiol ; 113(2): 207-215, Aug. 2019. tab, graf
Article in English | LILACS | ID: biblio-1019395

ABSTRACT

Abstract Background: Myocardial performance index (MPI), demonstrates both systolic and diastolic functions of the left ventricle. Presystolic wave (PSW) is frequently detected on Doppler examination of the left ventricular outflow tract and possible mechanism of PSW is impaired LV compliance and left ventricular stiffness. Objective: To investigate the relationship between PSW and MPI in type 2 diabetic patients. Method: A total of 129 type 2 diabetic patients were included in this study. Patients were divided into two groups according to the presence of PSW on Doppler echocardiography. There were 90 patients (38 male, mean age 57.77 ± 10.91 years) in the PSW-positive group and 39 patients (13 male; mean age: 55.31 ± 11.29 years) in the PSW-negative group. The p values of < 0.05 were considered statistically significant. Results: MPI was higher in PSW- positive group (0.63 ± 0.17vs 0.52 ± 0.13, p < 0.001). In addition, subclinical left ventricle dysfunction (LVD) was higher in the PSW- positive group (p = 0.029). Univariate analysis showed that the presence of PSW associated with abnormal MPI (p = 0.031). Pearson correlation analysis showed that PSW velocity correlated with MPI (r: 0.286, p = 0.006). Conclusion: Presence of the PSW on Doppler examination was associated with subclinical LV dysfunction in patients with DM type 2. This easy-to-perform echocardiographic parameter may be related to subclinical LVD among patients with type 2 DM.


Resumo Fundamento: O índice de performance miocárdica (IPM) avalia as funções sistólica e diastólica do ventrículo esquerdo. A onda pressistólica (OPS) é geralmente detectada no exame Doppler da via de saída do ventrículo esquerdo e seus possíveis mecanismos são complacência prejudicada e rigidez do ventrículo esquerdo. Objetivo: Investigar a relação entre OPS e IPM em pacientes com diabetes tipo 2. Método: 129 pacientes com diabetes tipo 2 foram incluídos no estudo. Os sujeitos foram alocados em dois grupos, com base na presença de OPS no exame ecocardiográfico com Doppler. Foram incluídos 90 pacientes (38 homens, idade média 57,77 ± 10,91 anos) no grupo OPS-positiva e 39 pacientes (13 homens; idade média 55,31 ± 11,29 anos) no grupo OPS-negativa. Valor de p < 0,05 foi considerado para significância estatística. Resultados: O IPM foi mais alto no grupo OPS-positiva (0,63 ± 0,17 vs 0,52 ± 0,13, p < 0,001). Além disso, a disfunção ventricular esquerda subclínica (DVE) foi maior no grupo OPS-positiva (p = 0,029). Análise univariada mostrou associação de OPS com IPM anormal (p = 0,031), assim como o coeficiente de correlação de Pearson mostrou correlação entre velocidade de OPS e IPM (r: 0,286, p = 0,006). Conclusão: Presença de OPS na ecocardiografia com Doppler foi associada à DVE subclínica em pacientes com diabetes tipo 2. Esse exame ecocardiográfico de fácil execução pode ser relacionado à DVE subclínica entre pacientes com diabetes tipo 2.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Echocardiography, Doppler/methods , Ventricular Dysfunction, Left/physiopathology , Ventricular Dysfunction, Left/diagnostic imaging , Diabetes Mellitus, Type 2/physiopathology , Reference Values , Stroke Volume/physiology , Body Mass Index , Cross-Sectional Studies , Risk Factors , Ventricular Function, Left/physiology , Statistics, Nonparametric , Heart/physiopathology , Heart/diagnostic imaging
15.
Med. infant ; 26(2): 156-167, Junio 2019. ilus
Article in Spanish | LILACS | ID: biblio-1016616

ABSTRACT

Las cardiopatías congénitas presentan con frecuencia patrones anatómicos complejos y tradicionalmente se han estudiado con ecocardiografía y eventualmente con cateterismo cardíaco. Con los avances tecnológicos de las últimas décadas, la tomografía computada y la resonancia magnética nuclear han adquirido gran importancia en la evaluación cardíaca. Actualmente constituyen métodos utilizados en el estudio de variadas patologías cardiovasculares de la infancia de difícil diagnóstico ecográfico, que previamente eran evaluadas por angiografía convencional, lo cual implicaba una dosis de radiación mucho mayor (AU)


Congenital heart defects often have complex anatomical patterns and have traditionally been studied with echocardiography and eventually cardiac catheterization. With technological advances in recent decades, computed tomography and magnetic resonance imaging have become very important in cardiac evaluation. Currently, they are the methods of choice in the study of a wide range of childhood cardiovascular diseases that are difficult to diagnose with echocardiography, which were previously evaluated using conventional angiography, involving a much higher dose of radiation (AU)


Subject(s)
Humans , Infant, Newborn , Infant , Child, Preschool , Child , Magnetic Resonance Imaging , Multidetector Computed Tomography , Computed Tomography Angiography , Heart/diagnostic imaging , Heart Defects, Congenital/diagnostic imaging , Heart Defects, Congenital/pathology
16.
Arq. bras. cardiol ; 112(2): 121-128, Feb. 2019. tab, graf
Article in English | LILACS | ID: biblio-983822

ABSTRACT

Abstract Background: Obesity is associated with an increased risk of type 2 diabetes mellitus (DM), ischemic heart disease (IHD) and cardiovascular mortality. Several studies have demonstrated the diagnostic and prognostic value of single photon computed tomography-myocardial perfusion scintigraphy (SPECT-MPI) in the evaluation of patients with suspected IHD, including in obese population. Data on clinical risk factors and their association with abnormal myocardial perfusion in obese patients are scarce in the Brazilian population. Objective: To determine the factors associated with abnormal myocardial perfusion in obese individuals without known IHD. Methods: We studied obese patients without known IHD who were referred for evaluation through SPECT-MPI between January 2011 and December 2016. Clinical variables and results of SPECT-MPI were obtained systematically. The distribution of continuous variables was assessed using the Shapiro-Wilk and Shapiro-Francia tests. We used the unpaired Student t test to compare the means of continuous variables with normal distribution and the Chi Square test for binomial variables analysis. A p value < 0.05 was considered statistically significant. The association of the clinical variables for the presence of factors associated with abnormal myocardial perfusion was determined by univariate and multivariate logistic regression analysis, and respective odds ratios (OR) and 95% confidence intervals (CI). Results: The study sample consisted of 5,526 obese patients. Mean body mass index (BMI) of our patients was 33.9 ± 3.7 kg/m2, 31% had DM, and myocardial perfusion abnormalities was observed in 23% of the total sample. The factors associated with abnormal myocardial perfusion on multivariate analysis were: age (OR: 1.02, 95% CI 1.01-1.03, p < 0.001), DM (OR: 1.57, 95% CI 1.31-1.88, p < 0.001), typical angina before the test (OR: 2.45, 95% CI: 1.82-3.31, p < 0.001), need for pharmacologic stress test (OR: 1.61, 95% CI: 1.26-2.07, p < 0.001), less physical effort evaluated in metabolic equivalents (METs) during the exercise treadmill test (OR: 0.89, 95% CI: 0.85-0.94, p < 0.001) and a lower post-stress left ventricular ejection fraction after stress (LVEF; OR: 0.989, 95% CI: 0.984-0.994, p < 0.001). Conclusion: The factors associated with abnormal myocardial perfusion in obese patients without known IHD were age, DM, presence of typical angina, ventricular dysfunction, and inability to undergo physical stress as clinical variables, in addition to functional capacity during physical stress.


Resumo Fundamento: A obesidade associa-se a um risco aumentado de diabetes mellitus do tipo 2 (DM), doença cardíaca isquêmica (DCI) e mortalidade cardiovascular. Vários estudos demonstraram o valor diagnóstico e prognóstico da cintilografia de perfusão miocárdica com tomografia computadorizada por fóton único (CPM-SPECT) na avaliação de pacientes com suspeita de DCI, inclusive na população de obesos. Dados sobre fatores de risco clínicos, e sua associação com perfusão miocárdica anormal em obesos, são escassos na população brasileira. Objetivo: Determinar quais são os fatores associados à anormalidade de perfusão miocárdica em obesos sem DCI conhecida. Métodos: Estudamos pacientes obesos sem DCI conhecida que foram encaminhados para avaliação por CPM-SPECT entre janeiro de 2011 até dezembro de 2016. Variáveis clínicas e resultados da CPM-SPECT foram obtidos de forma sistematizada. A distribuição das variáveis contínuas foi avaliada utilizando-se os testes de Shapiro-Wilk e Shapiro-Francia. Utilizou-se o teste t de Student não pareado para comparar as médias das variáveis contínuas com distribuição normal, e o teste do Chi quadrado para análise das variáveis binomiais. Considerou-se o valor de p < 0,05 como estatisticamente significativo. A associação das variáveis clínicas para a presença de anormalidade de perfusão miocárdica foi determinada por análise de regressão logística univariada e multivariada, calculando-se e apresentando-se os respectivos odds ratios (OR) e intervalos de confiança (IC) de 95. Resultados: A amostra do estudo foi de 5.526 pacientes obesos. O índice de massa corporal médio dos nossos pacientes foi de 33,9 ± 3,7 kg/m2, 31% eram portadores de DM, e anormalidades de perfusão foram observadas em 23% do total da amostra. Os fatores associados à anormalidade de perfusão miocárdica, após análise multivariada, foram: idade (OR: 1,02, IC 95%: 1,01-1,03, p < 0,001), DM (OR: 1,57, IC 95%: 1,31-1,88, p < 0,001), presença de angina típica antes do exame (OR: 2,45, IC 95%: 1,82-3,31, p < 0,001), necessidade de utilização de protocolo com estresse farmacológico (OR: 1,61, IC 95%: 1,26-2,07, p < 0,001), menor esforço físico avaliado em equivalentes metabólicos durante o teste ergométrico (OR: 0,89, IC 95%: 0,85-0,94, p < 0,001) e menor fração de ejeção do ventrículo esquerdo após estresse (OR: 0,989, IC 95%: 0,984-0,994, p < 0,001). Conclusão: Os fatores associados à anormalidade de perfusão miocárdica em pacientes obesos sem DCI conhecida foram idade, DM, presença de angina típica, disfunção ventricular e incapacidade para o estresse físico como variáveis clínicas, além da capacidade funcional durante o estresse físico.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Myocardial Ischemia/physiopathology , Heart/physiology , Myocardium , Obesity/physiopathology , Reference Values , Stroke Volume/physiology , Body Mass Index , Logistic Models , Sex Factors , Predictive Value of Tests , Prospective Studies , Risk Factors , Ventricular Function, Left/physiology , Statistics, Nonparametric , Risk Assessment/methods , Myocardial Perfusion Imaging/methods , Single Photon Emission Computed Tomography Computed Tomography/methods , Heart/diagnostic imaging
17.
Rev. bras. ginecol. obstet ; 40(11): 722-725, Nov. 2018. graf
Article in English | LILACS | ID: biblio-977797

ABSTRACT

Abstract Noncompaction cardiomyopathy (NCCM) and left ventricular noncompaction (LVNC), in their isolated form, are rare cardiomyopathies. They are characterized by a thickened myocardium due to the presence of deep trabeculae recesses, and to thick trabeculae. This condition is associated with a variable clinical phenotype including heart failure, thromboembolism, and sudden death. We report a case of LVNC at 26 weeks and 4 days of gestation revised on the basis of what is currently reported in the literature. A review of the literature was performed to better describe this rare condition. Left ventricular noncompaction is a rare fetal condition and it should be suspected in case of cardiomyopathy.


Subject(s)
Humans , Female , Young Adult , Ultrasonography, Prenatal , Isolated Noncompaction of the Ventricular Myocardium/diagnostic imaging , Heart/diagnostic imaging , Myocardium/pathology
18.
Arq. bras. cardiol ; 110(3): 278-288, Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-888039

ABSTRACT

Abstract Many non-invasive methods, such as imaging tests, have been developed aiming to add a contribution to existing studies in estimating patients' prognosis after myocardial injury. This prognosis is proportional to myocardial viability, which is evaluated in coronary artery disease and left ventricular dysfunction patients only. While myocardial viability represents the likelihood of a dysfunctional muscle (resulting from decreased oxygen supply for coronary artery obstruction), hibernation represents post-interventional functional recovery itself. This article proposes a review of pathophysiological basis of viability, diagnostic methods, prognosis and future perspectives of myocardial viability. An electronic bibliographic search for articles was performed in PubMed, Lilacs, Cochrane and Scielo databases, according to pre-established criteria. The studies showed the ability of many imaging techniques in detecting viable tissues in dysfunctional areas of left ventricle resulting from coronary artery injuries. These techniques can identify patients who may benefit from myocardial revascularization and indicate the most appropriate treatment.


Resumo Diversos métodos não invasivos, como novos exames de imagem, vem sendo aprimorados, a fim de somar esforços com os atuais em estimar o prognóstico de pacientes pós-injúria miocárdica. Este prognóstico é proporcional à viabilidade miocárdica, a qual tem sua avaliação reservada para pacientes portadores de doença arterial coronariana e insuficiência ventricular esquerda. Enquanto a viabilidade miocárdica se mostra como a capacidade de recuperação funcional do músculo com disfunção por redução de oxigênio fornecido por artérias coronárias obstruídas, a hibernação consiste na própria recuperação funcional após intervenções. Este artigo propõe uma revisão sobre as bases fisiopatológicas do processo de viabilidade, métodos diagnósticos disponíveis, prognóstico e perspectivas para o futuro acerca dessa condição. Realizou-se pesquisa de busca bibliográfica informatizada em bases eletrônicas de dados, como PubMed, Lilacs, Cochrane e Scielo, onde foram selecionados os estudos de acordo com critérios pré-determinados. Os estudos demonstram a capacidade de várias técnicas de imagem de identificar tecido viável em regiões disfuncionais do ventrículo esquerdo em decorrência de lesões em artérias coronárias. Estas técnicas podem identificar pacientes com potencial benefício da revascularização miocárdica e orientar o tratamento mais adequado.


Subject(s)
Humans , Tissue Survival/physiology , Myocytes, Cardiac/pathology , Myocardial Infarction/pathology , Myocardial Infarction/diagnostic imaging , Myocardium/pathology , Prognosis , Coronary Artery Disease/physiopathology , Coronary Artery Disease/pathology , Coronary Artery Disease/diagnostic imaging , Magnetic Resonance Imaging/methods , Echocardiography/methods , Ventricular Dysfunction, Left/pathology , Ventricular Dysfunction, Left/diagnostic imaging , Positron Emission Tomography Computed Tomography/methods , Heart/diagnostic imaging , Myocardial Infarction/physiopathology , Myocardial Revascularization
19.
Rev. bras. anestesiol ; 68(1): 1-32, Jan.-Feb. 2018. tab, graf, ilus
Article in Portuguese | LILACS, SES-SP, SESSP-IDPCPROD, SES-SP | ID: biblio-897812

ABSTRACT

RESUMO A Sociedade Brasileira de Anestesiologia, pelo Núcleo Vida de Ecocardiografia Transe-sofágica Intraoperatória (ETTI/SBA) juntamente com o Departamento de Imagem Cardiovascularda Sociedade Brasileira de Cardiologia (DIC/SBC), fez uma forc ̧a-tarefa para normatizar afeitura da ecocardiografia transesofágica intraoperatória para os anestesiologistas e ecocar-diografistas brasileiros com base nas evidências científicas da Sociedade dos AnestesiologistasCardiovasculares/Sociedade Americana de Ecocardiografia (SCA/ASE) e da Sociedade Brasileirade Cardiologia.


ABSTRACT Through the Life Cycle of Intraoperative Transesophageal Echocardiography(ETTI/SBA) the Brazilian Society of Anesthesiology, together with the Department of Cardi-ovascular Image of the Brazilian Society of Cardiology (DIC/SBC), createded a task force tostandardize the use of intraoperative transesophageal echocardiography by Brazilian anesthesi-ologists and echocardiographers based on scientific evidence from the Society of CardiovascularAnesthesiologists/American Society of Echocardiography (SCA/ASE) and the Brazilian Society ofCardiology.


Subject(s)
Humans , Echocardiography, Transesophageal/standards , Heart/diagnostic imaging , Cardiac Surgical Procedures , Intraoperative Care , Echocardiography, Transesophageal/adverse effects , Echocardiography, Transesophageal/methods
20.
Article in English | WPRIM | ID: wpr-1010367

ABSTRACT

Left anterior fascicular block (LAFB) is a heart disease identifiable from an abnormal electrocardiogram (ECG). It has been reported that LAFB is associated with an increased risk of heart failure. Non-specific intraventricular conduction delay due to the lesions of the conduction bundles and slow cell to cell conduction has also been considered as another cause of heart failure. Since the location and mechanism of conduction delay have notable variability between individual patients, we hypothesized that the impaired conduction in the ventricular myocardium may lead to abnormal ECGs similar to LAFB ECG patterns. To test this hypothesis, based on a computer model with a three dimensional whole-heart anatomical structure, we simulated the cardiac exciting sequence map and 12-lead ECG caused by the block in the left anterior fascicle and by the slowed conduction velocity in the ventricular myocardium. The simulation results showed that the typical LAFB ECG patterns can also be observed from cases with slowed conduction velocity in the ventricular myocardium. The main differences were the duration of QRS and wave amplitude. In conclusion, our simulations provide a promising starting point to further investigate the underlying mechanism of heart failure with LAFB, which would provide a potential reference for LAFB diagnosis.


Subject(s)
Adult , Humans , Male , Bundle-Branch Block/diagnostic imaging , Computer Simulation , Electrocardiography , Heart/diagnostic imaging , Heart Atria/diagnostic imaging , Heart Conduction System/physiopathology , Heart Failure/diagnostic imaging , Heart Ventricles/diagnostic imaging , Models, Anatomic , Models, Theoretical , Muscle Cells , Myocardium , Phantoms, Imaging , Poisson Distribution
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