Fasting glucose: a cardiometabolic indicator for subclinical atherosclerosis on excess weight adolescents

Abstract Objective: To build a model based on cardiometabolic indicators that allow the identification of overweight adolescents at higher risk of subclinical atherosclerotic disease (SAD). Methods: Cross-sectional study involving 161 adolescents with a body mass index ≥ + 1 z-Score, aged 10 to 19 years. Carotid intima-media complex thickness (IMT) was evaluated using ultrasound to assess subclinical atherosclerotic disease. Cardiometabolic indicators evaluated included nutritional status, central adiposity, blood pressure, lipidic profile, glycemic profile, as well as age and sex. Data was presented using measures of central tendency and dispersion, as well as absolute and relative frequency. The relationship between IMT measurement (outcome variable) and other variables (independent variables) was assessed using Pearson or Spearman correlation, followed by multiple regression modeling with Gamma distribution to analyze predictors of IMT. Statistical analysis was performed using SPSS and R software, considering a significance level of 5 %. Results: It was observed that 23.7 % had Carotid thickening, and the prevalence of abnormal fasting glucose was the lowest. Age and fasting glucose were identified as predictors of IMT increase, with IMT decreasing with age by approximately 1 % per year and increasing with glucose by around 0.24 % per mg/dL. Conclusion: The adolescent at higher risk is younger with higher fasting glycemia levels.

A prediction model for coronary artery abnormalities in children with Kawasaki disease older than 5 years

Abstract Objective: Reliably prediction models for coronary artery abnormalities (CAA) in children aged > 5 years with Kawasaki disease (KD) are still lacking. This study aimed to develop a nomogram model for predicting CAA at 4 to 8 weeks of illness in children with KD older than 5 years. Methods: A total of 644 eligible children were randomly assigned to a training cohort (n = 450) and a validation cohort (n = 194). The least absolute shrinkage and selection operator (LASSO) analysis was used for optimal predictors selection, and multivariate logistic regression was used to develop a nomogram model based on the selected predictors. Area under the receiver operating characteristic curve (AUC), calibration curves, Hosmer-Lemeshow test, Brier score, and decision curve analysis (DCA) were used to assess model performance. Results: Neutrophil to lymphocyte ratio, intravenous immunoglobulin resistance, and maximum baseline z-score ≥ 2.5 were identified by LASSO as significant predictors. The model incorporating these variables showed good discrimination and calibration capacities in both training and validation cohorts. The AUC of the training cohort and validation cohort were 0.854 and 0.850, respectively. The DCA confirmed the clinical usefulness of the nomogram model. Conclusions: A novel nomogram model was established to accurately assess the risk of CAA at 4-8 weeks of onset among KD children older than 5 years, which may aid clinical decisionmaking.

Além do Escore GRACE SCA: É Necessário um Modelo Diferente para Homens e Mulheres após IAMCSST? / Beyond the GRACE ACS Score: Do We Need a Different Model for Men and Women after STEMI?

Resumo Fundamento As mulheres, em comparação aos homens, apresentam piores resultados após a síndrome coronariana aguda (SCA). No entanto, ainda não está claro se o sexo feminino em si é um preditor independente de tais eventos adversos. Objetivo Este estudo tem como objetivo avaliar a associação entre o sexo feminino e a mortalidade hospitalar após infarto do miocárdio com supradesnivelamento do segmento ST (IAMCSST). Métodos Conduzimos um estudo de coorte retrospectivo, recrutando pacientes consecutivos com IAMCSST, internados em um hospital terciário de janeiro de 2018 a fevereiro de 2019. Todos os pacientes foram tratados de acordo com as recomendações das diretrizes atuais. Modelos de regressão logística multivariada foram aplicados para avaliar a mortalidade hospitalar utilizando variáveis de GRACE. A precisão do modelo foi avaliada usando o índice c. Um valor de p < 0,05 foi estatisticamente significativo. Resultados Dos 1.678 pacientes com SCA, 709 apresentaram IAMCSST. A população era composta por 36% de mulheres e a idade média era de 61 anos. As mulheres tinham maior idade (63,13 anos vs. 60,53 anos, p = 0,011); apresentavam hipertensão (75,1% vs. 62,4%, p = 0,001), diabetes (42,2% vs. 27,8%, p < 0,001) e hiperlipidemia (34,1% vs. 23,9%, p = 0,004) mais frequentemente; e apresentaram menor probabilidade de serem submetidas a intervenção coronária percutânea (ICP) por acesso radial (23,7% vs. 46,1%, p < 0,001). A taxa de mortalidade hospitalar foi significativamente maior em mulheres (13,2% vs. 5,6%, p = 0,001), e o sexo feminino permaneceu em maior risco de mortalidade hospitalar (OR 2,79, IC de 95% 1,15-6,76, p = 0,023). Um modelo multivariado incluindo idade, sexo, pressão arterial sistólica, parada cardíaca e classe de Killip atingiu 94,1% de precisão na previsão de mortalidade hospitalar, e o índice c foi de 0,85 (IC de 95% 0,77-0,93). Conclusão Após ajuste para os fatores de risco no modelo de previsão do GRACE, as mulheres continuam em maior risco de mortalidade hospitalar.

Abstract Background Women, in comparison to men, experience worse outcomes after acute coronary syndrome (ACS). However, whether the female sex per se is an independent predictor of such adverse events remains unclear. Objective This study aims to assess the association between the female sex and in-hospital mortality after ST-elevation myocardial infarction (STEMI). Methods We conducted a retrospective cohort study by enrolling consecutive STEMI patients admitted to a tertiary hospital from January 2018 to February 2019. All patients were treated per current guideline recommendations. Multivariable logistic regression models were applied to evaluate in-hospital mortality using GRACE variables. Model accuracy was evaluated using c-index. A p-value < 0.05 was statistically significant. Results Out of the 1678 ACS patients, 709 presented with STEMI. The population consisted of 36% women, and the median age was 61 years. Women were older (63.13 years vs. 60.53 years, p = 0.011); more often presented with hypertension (75.1% vs. 62.4%, p = 0.001), diabetes (42.2% vs. 27.8%, p < 0.001), and hyperlipidemia (34.1% vs. 23.9%, p = 0.004); and were less likely to undergo percutaneous coronary intervention (PCI) via radial access (23.7% vs. 46.1%, p < 0.001). In-hospital mortality rate was significantly higher in women (13.2% vs. 5.6%, p = 0.001), and the female sex remained at higher risk for in-hospital mortality (OR 2.79, 95% CI 1.15-6.76, p = 0.023). A multivariate model including age, sex, systolic blood pressure, cardiac arrest, and Killip class was 94.1% accurate in predicting in-hospital mortality, and the c-index was 0.85 (95% CI 0.77-0.93). Conclusion After adjusting for the risk factors in the GRACE prediction model, women remain at higher risk for in-hospital mortality.

Comparison of Vertebral Artery Ultrasound, Magnetic Resonance Angiography and Digital Subtraction Angiography in the Diagnosis of Vertebral Artery Stenosis in Patients with Posterior Circulation Ischemia

SUMMARY: The aim of this study was to compare the clinical value of vertebral artery ultrasound (VAU), Magnetic Resonance Angiography (MRA) and Digital Subtraction Angiography (DSA) on vertebral artery stenosis in patients with posterior circulation ischemia. Seventy-three patients with posterior circulation ischemia underwent vertebral artery ultrasound and magnetic resonance angiography as well as digital subtraction angiography, and the diagnosis of vertebral artery stenosis (VAS) and the degree of stenosis (normal, mild stenosis, moderate stenosis, severe stenosis, and occlusion) were recorded and compared between digital subtraction angiogram and vertebral artery ultrasound and magnetic resonance angiography. The vertebral artery stenosis rates on digital subtraction angiography and vertebral artery ultrasound were 87.30 % (55/63) and 49.20 % (31/63), respectively, and the difference was statistically significant. The rates of vertebral artery stenosis on digital subtraction angiography and, magnetic resonance angiography was 90.38 % (47/52) and 88.46 % (46/ 52), respectively, and the differences was not statistically significant. The sensitivity, accuracy, negative predictive value, and positive predictive value of vertebral artery ultrasound in diagnosing vertebral artery stenosis were 51.35 %, 54.76 %, 18.18 %, and 95.00 %, respectively, lower than those of magnetic resonance angiography, which were 91.89 %, 90.48 %, 57.14 %, and 97.14 %, respectively. Of the noninvasive imaging techniques, vertebral artery ultrasound does not accurately characterize vertebral artery stenosis and its degree of stenosis. Magnetic resonance angiography effectively screens for vertebral artery stenosis and its degree of stenosis, and can be used as a reliable tool for vertebral artery stenosis in posterior circulation cerebral infarction, and can be used in conjunction with digital subtraction angiogram in order to improve diagnostic convenience and accuracy.

El objetivo de este estudio fue comparar el valor clínico de la ecografía de la arteria vertebral (VAU), la angiografía por resonancia magnética (ARM) y la angiografía por sustracción digital (DSA) en la estenosis de la arteria vertebral en pacientes con isquemia de la circulación posterior. A 73 pacientes con isquemia de la circulación posterior se les realizó una ecografía de la arteria vertebral y una angiografía por resonancia magnética, así como una angiografía por sustracción digital, y se les diagnosticó estenosis de la arteria vertebral (EVA) y el grado de estenosis (normal, estenosis leve, estenosis moderada, estenosis grave, y oclusión) se registraron y compararon la angiografía por sustracción digital y la ecografía de la arteria vertebral y la angiografía por resonancia magnética. Las tasas de estenosis de la arteria vertebral en la angiografía por sustracción digital y la ecografía de la arteria vertebral fueron del 87,30 % (55/63) y del 49,20 % (31/63), respectivamente, y la diferencia fue estadísticamente significativa. Las tasas de estenosis de la arteria vertebral en la angiografía por sustracción digital y la angiografía por resonancia magnética fueron del 90,38 % (47/52) y del 88,46 % (46/52), respectivamente, y las diferencias no fueron estadísticamente significativas. La sensibilidad, precisión, valor predictivo negativo y valor predictivo positivo de la ecografía de la arteria vertebral en el diagnóstico de estenosis de la arteria vertebral fueron 51,35 %, 54,76 %, 18,18 % y 95,00 %, respectivamente, inferiores a los de la angiografía por resonancia magnética, que fueron 91,89 %, 90,48 %, 57,14 % y 97,14 %, respectivamente. De las técnicas de imagen no invasivas, la ecografía de la arteria vertebral no caracteriza con precisión la estenosis de la arteria vertebral y su grado de estenosis. La angiografía por resonancia magnética detecta eficazmente la estenosis de la arteria vertebral y su grado de estenosis, y puede usarse como una herramienta confiable para la estenosis de la arteria vertebral en el infarto cerebral de circulación posterior, y puede ser utilizada junto con la angiografía por sustracción digital para mejorar el diagnóstico y la exactitud.

Síndrome de Wilkie como reto diagnóstico en obstrucción intestinal: reporte de caso / Wilkie syndrome as a diagnostic challenge in intestinal obstruction: case report

RESUMEN El síndrome de Wilkie es una patología poco frecuente que genera un cuadro de obstrucción intestinal, debido a la disminución del ángulo aortomesentérico comprometiendo la tercera porción del duodeno. Describimos el caso de una paciente de 18 años de edad, diagnosticada con síndrome de Wilkie, con cuadro clínico de obstrucción intestinal y pérdida de peso. El diagnóstico se realizó con tomografía abdominal. El síndrome de Wilkie es una patología rara, que se vuelve un reto diagnóstico, por presentar un cuadro similar a otras patologías más comunes. Recomendamos que se sospeche ante un cuadro de obstrucción duodenal.

ABSTRACT Wilkie syndrome is a rare pathology that generates intestinal obstruction due to a decrease of the aortomesenteric angle compromising the third portion of the duodenum. We describe a case of an 18-year-old female patient, diagnosed with Wilkie syndrome, with clinical symptoms of intestinal obstruction and weight loss. The diagnosis was made with abdominal CT. Wilkie syndrome is a rare pathology, which becomes a diagnostic challenge because it presents a similar picture to other more common pathologies. We recommend that it should be suspected in the presence of duodenal obstruction.

Identificação de Potenciais Biomarcadores Cruciais em IAMCSST por Meio de Análise Bioinformática Integrada / Identification of Potential Crucial Biomarkers in STEMI Through Integrated Bioinformatic Analysis

Resumo Fundamento O infarto do miocárdio com elevação do segmento ST (IAMCSST) é uma das principais causas de doenças cardiovasculares fatais, que têm sido a principal causa de mortalidade em todo o mundo. O diagnóstico na fase inicial beneficiaria a intervenção clínica e o prognóstico, mas ainda falta a exploração dos biomarcadores do IAMCSST. Objetivos Neste estudo, conduzimos uma análise bioinformática para identificar potenciais biomarcadores cruciais no progresso do IAMCSST. Métodos Obtivemos GSE59867 para pacientes com IAMCSST e doença arterial coronariana estável (DACE). Genes diferencialmente expressos (GDEs) foram selecionados com o limiar de -log2fold change- > 0,5 e p < 0,05. Com base nesses genes, conduzimos análises de enriquecimento para explorar a relevância potencial entre genes e para rastrear genes centrais. Posteriormente, os genes centrais foram analisados para detectar miRNAs relacionados e DAVID para detectar fatores de transcrição para análise posterior. Finalmente, o GSE62646 foi utilizado para avaliar a especificidade dos GDEs, com genes demonstrando resultados de AUC superiores a 75%, indicando seu potencial como candidatos a biomarcadores. Posteriormente, os genes centrais foram analisados para detectar miRNAs relacionados e DAVID para detectar fatores de transcrição para análise posterior. Finalmente, o GSE62646 foi utilizado para avaliar a especificidade dos GDEs, com genes demonstrando resultados de AUC superiores a 75%, indicando seu potencial como candidatos a biomarcadores. Resultados 133 GDEs entre DACE e IAMCSST foram obtidos. Em seguida, a rede PPI de GDEs foi construída usando String e Cytoscape, e análises posteriores determinaram genes centrais e 6 complexos moleculares. A análise de enriquecimento funcional dos GDEs sugere que as vias relacionadas à inflamação, metabolismo e imunidade desempenham um papel fundamental na progressão de DACE para IAMCSST. Além disso, foram previstos miRNAs relacionados, has-miR-124, has-miR-130a/b e has-miR-301a/b regularam a expressão do maior número de genes. Enquanto isso, a análise dos fatores de transcrição indica que EVI1, AML1, GATA1 e PPARG são os genes mais enriquecidos. Finalmente, as curvas ROC demonstram que MS4A3, KLRC4, KLRD1, AQP9 e CD14 exibem alta sensibilidade e especificidade na previsão de IAMCSST. Conclusões Este estudo revelou que imunidade, metabolismo e inflamação estão envolvidos no desenvolvimento de IAMCSST derivado de DACE, e 6 genes, incluindo MS4A3, KLRC4, KLRD1, AQP9, CD14 e CCR1, poderiam ser empregados como candidatos a biomarcadores para IAMCSST.

Abstract Background ST-segment elevation myocardial infarction (STEMI) is one of the leading causes of fatal cardiovascular diseases, which have been the prime cause of mortality worldwide. Diagnosis in the early phase would benefit clinical intervention and prognosis, but the exploration of the biomarkers of STEMI is still lacking. Objectives In this study, we conducted a bioinformatics analysis to identify potential crucial biomarkers in the progress of STEMI. Methods We obtained GSE59867 for STEMI and stable coronary artery disease (SCAD) patients. Differentially expressed genes (DEGs) were screened with the threshold of -log2fold change- > 0.5 and p <0.05. Based on these genes, we conducted enrichment analysis to explore the potential relevance between genes and to screen hub genes. Subsequently, hub genes were analyzed to detect related miRNAs and DAVID to detect transcription factors for further analysis. Finally, GSE62646 was utilized to assess DEGs specificity, with genes demonstrating AUC results exceeding 75%, indicating their potential as candidate biomarkers. Results 133 DEGs between SCAD and STEMI were obtained. Then, the PPI network of DEGs was constructed using String and Cytoscape, and further analysis determined hub genes and 6 molecular complexes. Functional enrichment analysis of the DEGs suggests that pathways related to inflammation, metabolism, and immunity play a pivotal role in the progression from SCAD to STEMI. Besides, related-miRNAs were predicted, has-miR-124, has-miR-130a/b, and has-miR-301a/b regulated the expression of the largest number of genes. Meanwhile, Transcription factors analysis indicate that EVI1, AML1, GATA1, and PPARG are the most enriched gene. Finally, ROC curves demonstrate that MS4A3, KLRC4, KLRD1, AQP9, and CD14 exhibit both high sensitivity and specificity in predicting STEMI. Conclusions This study revealed that immunity, metabolism, and inflammation are involved in the development of STEMI derived from SCAD, and 6 genes, including MS4A3, KLRC4, KLRD1, AQP9, CD14, and CCR1, could be employed as candidate biomarkers to STEMI.

A Relação entre o Índice de Imuno-Inflamação Sistêmica e Isquemia com Artérias Coronárias Não Obstrutivas em Pacientes Submetidos à Angiografia Coronária / The Relationship between the Systemic Immune-Inflammation Index and Ischemia with Non-Obstructive Coronary Arteries in Patients Undergoing Coronary Angiography

Resumo Fundamento: A isquemia com artéria coronária não obstrutiva (INOCA) é uma doença cardíaca isquêmica que inclui principalmente disfunção microvascular coronariana e/ou vasoespasmo coronariano epicárdico devido à disfunção vascular coronariana subjacente e pode ser observada mais comumente em pacientes do sexo feminino. O índice de inflamação imunológica sistêmica (SII, relação plaquetas × neutrófilos/linfócitos) é um novo marcador que prediz resultados clínicos adversos na doença arterial coronariana (DAC). Objetivo: Este estudo tem como objetivo investigar a relação entre INOCA e SII, um novo marcador associado à inflamação. Métodos: Um total de 424 pacientes (212 pacientes com INOCA e 212 controles normais) foram incluídos no estudo. Amostras de sangue venoso periférico foram recebidas de toda a população do estudo antes da angiografia coronária para medir o SII e outros parâmetros hematológicos. Em nosso estudo o valor de p<0,05' foi considerado estatisticamente significativo. Resultados: O valor de corte ideal do SII para prever o INOCA foi 153,8, com sensibilidade de 44,8% e especificidade de 78,77% (Área sob a curva [AUC]: 0,651 [IC 95%: 0,603-0,696, p=0,0265]). Suas curvas ROC foram comparadas para avaliar se o SII tinha um efeito preditivo adicional valor sobre os componentes. O valor da AUC do SII foi significativamente maior do que o do linfócito (AUC: 0,607 [IC 95%: 0,559-0,654, p = 0,0273]), neutrófilos (AUC: 0,559 [IC 95%: 0,511-0,607, p = 0,028]) e plaquetas (AUC: 0,590 [IC 95%: 0,541-0,637, p = 0,0276]) em pacientes INOCA. Conclusões: Verificou-se que um nível elevado de SII estava independentemente associado à existência de INOCA. O valor do SII pode ser usado como um indicador para adicionar aos métodos tradicionais e caros comumente usados na previsão do INOCA.

Abstract Background: Ischemia with the non-obstructive coronary artery (INOCA) is an ischemic heart disease that mostly includes coronary microvascular dysfunction and/or epicardial coronary vasospasm due to underlying coronary vascular dysfunction and can be seen more commonly in female patients. The systemic immune-inflammation index (SII, platelet × neutrophil/lymphocyte ratio) is a new marker that predicts adverse clinical outcomes in coronary artery disease (CAD). Objective: This study aims to investigate the relationship between INOCA and SII, a new marker associated with inflammation. Methods: A total of 424 patients (212 patients with INOCA and 212 normal controls) were included in the study. Peripheral venous blood samples were received from the entire study population prior to coronary angiography to measure SII and other hematological parameters. In our study, the value of p<0.05' was considered statistically significant. Results: The optimal cut-off value of SII for predicting INOCA was 153.8 with a sensitivity of 44.8% and a specificity of 78.77% (Area under the curve [AUC]: 0.651 [95% CI: 0.603-0.696, p=0.0265]). Their ROC curves were compared to assess whether SII had an additional predictive value over components. The AUC value of SII was found to be significantly higher than that of lymphocyte (AUC: 0.607 [95% CI: 0.559-0.654, p = 0.0273]), neutrophil (AUC: 0.559 [95%CI: 0.511-0.607, p=0.028]) and platelet (AUC: 0.590 [95% CI: 0.541-0.637, p = 0.0276]) in INOCA patients. Conclusions: A high SII level was found to be independently associated with the existence of INOCA. The SII value can be used as an indicator to add to the traditional expensive methods commonly used in INOCA prediction.

Bilateral high origin and superficial trajectory of the deep femoral artery: clinical and applied anatomy

ABSTRACT The anatomy of the femoral triangle is explored in various approaches, ranging from pulse verification to invasive catheterization procedures. Within the femoral triangle, the deep femoral artery is one of the vessels reported to present several anatomical variations that must be considered before clinical or surgical interventions. Here, we are reporting a unique bilateral variation of the deep femoral artery for medical education purposes and reflecting on its applied, surgical, and clinical anatomy. During the dissection of the femoral triangle, we observed that the deep femoral artery originated in the vicinity of the inguinal ligament and ran in parallel with the femoral artery in a superficial trajectory on both sides of the donor. On the right side, the DFA continued superficial for 8.8 cm, with an origin of 1.2 cm inferior to the inguinal ligament. On the left side, it presented a similar anatomical arrangement, though with an origin of 1.6cm inferior to the inguinal ligament and a superficial course of 5cm. The position of the lateral circumflex femoral vein posterior to the deep femoral artery played a role in this distinctive, lengthy, and superficial presentation of the deep femoral artery. This anatomical variation directly affects surgical procedures, diagnostics, and endovascular interventions. A deep femoral artery with such a lengthy superficial trajectory can be mistakenly used for catheterization instead of the femoral artery or be injured, disrupting the main blood supply of the thigh muscles.

Topical glyceryl trinitrate to increase radial artery diameter in neonates: study protocol for a randomized controlled trial / Trinitrato de glicerilo tópico para aumentar o diâmetro da artéria radial em recém-nascidos: protocolo de estudo de um ensaio clínico randomizado

ABSTRACT Background: Newborn infants admitted to the neonatal intensive care unit require arterial cannulation for hemodynamic monitoring and blood sampling. Arterial access is achieved through catheterization of umbilical or peripheral arteries. Peripheral artery cannulation is performed in critically ill newborns, but artery localization and cannulation is often challenging and unsuccessful. Therefore, increasing the internal diameter and preventing vasospasm are important for successful peripheral artery cannulation in neonates. Topical glyceryl trinitrate has the potential to increase cannulation success by relaxing arterial smooth muscles and thus increasing the internal diameter. We aim to conduct a pilot randomized controlled trial to evaluate the efficacy and safety of topycal glyceryl trinitrate in increasing the diameter of the radial artery in neonates. Methods/Design: This study will be a single-center, observer-blind, randomized, placebo-controlled trial conducted in the neonatal intensive care unit of Perth Children's Hospital, Western Australia. A total of 60 infants born at >34 weeks of gestation who are admitted for elective surgery or medical reasons and for whom a peripheral arterial line is needed for sampling or blood pressure monitoring will be recruited after informed parental consent is obtained. The primary outcome will be the change in radial arterial diameter from baseline to postintervention. Secondary outcomes will be the absolute and percentage change from baseline in the radial arterial diameter in both limbs and safety (hypotension and methemoglobinemia). Discussion: This will be the first randomized controlled trial evaluating the use of topical glyceryl trinitrate to facilitate peripheral artery cannulation in neonates. If our pilot randomized controlled trial confirms the benefits of glyceryl trinitrate patches, it will pave the way for large multicenter randomized controlled trials in this field.

RESUMO Histórico: Os recém-nascidos internados na unidade de terapia intensiva neonatal necessitam de canulação arterial para monitoramento hemodinâmico e coleta de sangue. O acesso arterial é obtido por meio de cateterização das artérias umbilicais ou periféricas. A canulação da artéria periférica é realizada em recém-nascidos em estado grave, mas a localização e a canulação da artéria são, muitas vezes, desafiadoras e sem sucesso. Assim, o aumento do diâmetro interno e a prevenção do vasoespasmo são importantes para o sucesso da canulação da artéria periférica em recém-nascidos. O trinitrato de glicerilo tópico tem o potencial de aumentar o sucesso da canulação ao relaxar a musculatura lisa arterial e, dessa forma, aumentar o diâmetro interno. Nosso objetivo é realizar um ensaio piloto controlado e randomizado para avaliar a eficácia e segurança do trinitrato de glicerilo tópico no aumento do diâmetro da artéria radial em recém-nascidos. Métodos/Desenho: Este estudo será um estudo de centro único, cego para o observador, randomizado, controlado por placebo, conduzido na unidade de terapia intensiva neonatal do Perth Children's Hospital, Austrália Ocidental. Serão recrutados 60 bebês nascidos com mais de 34 semanas de gestação, internados para cirurgia eletiva ou por razões médicas e para os quais é necessária a colocação de um acesso arterial periférico para coleta de amostras ou monitoramento da pressão arterial, após a obtenção do consentimento informado dos pais. O desfecho primário será a mudança no diâmetro arterial radial basal e pós-intervenção. Os desfechos secundários serão a alteração absoluta e percentual basal no diâmetro arterial radial em ambos os membros e a segurança (hipotensão e metemoglobinemia). Discussão: Este será o primeiro estudo controlado e randomizado a avaliar o uso de trinitrato de glicerilo tópico para facilitar a canulação da artéria periférica em recém-nascidos. Se nosso estudo-piloto randomizado e controlado confirmar os benefícios dos adesivos de trinitrato de glicerilo, ele abrirá caminho para grandes estudos multicêntricos randomizados e controlados nesse campo.

Reading and writing from right to left after anterior cerebral artery stroke / Escrita e leitura da direita para a esquerda após lesão cerebral

ABSTRACT. This is the case report of a woman who started to write and read from right to left after anterior cerebral artery stroke, affecting the left supplementary motor area. No cases were found in the literature with exactly the same characteristics. She has been able to read and write faster after rehabilitation approach at Sarah Network of Rehabilitation Hospitals, in the Belo Horizonte city unit, Brazil, despite the maintenance of the inversion. She returned to her previous activities in an adaptive way. It was discussed how the dysfunction in this cerebral area and its connections may disturb the reading strategy and direction.

RESUMO. Relato do caso de uma mulher que passou a escrever e ler da direita para a esquerda após um acidente vascular encefálico isquêmico de artéria cerebral anterior, acometendo área motora suplementar esquerda. Não foram encontrados casos na literatura exatamente com as mesmas características. Durante a participação da paciente no programa de reabilitação neurológica da Rede Sarah de Hospitais de Reabilitação, unidade Belo Horizonte, foram observados ganhos na agilidade de leitura e escrita, ainda que mantendo a inversão, e retorno às suas atividades de forma adaptada. Realizou-se discussão de como o comprometimento dessa área e de suas conexões pode perturbar a estratégia de leitura e sua direção.

Prevención de hemorragia posparto durante la cesárea mediante ligadura de las arterias uterinas en pacientes con factores de riesgo / Uterine artery ligation for prevention of postpartum hemorrhage in patients with risk factors for cesarean section

Resumen OBJETIVO: Evaluar la utilidad preventiva de la hemorragia posparto mediante la ligadura bilateral de las arterias uterinas en pacientes con factores de riesgo. MATERIALES Y MÉTODOS: Estudio prospectivo, experimental, aleatorizado no probabilístico, por conveniencia, de casos y controles, longitudinal, comparativo al que se incluyeron pacientes con factores de riesgo de hemorragia posparto que finalizaron el embarazo mediante cesárea de urgencia. Se integraron dos grupos: experimental, en quienes se aplicó la técnica de ligadura bilateral de arterias uterinas y el grupo control: solo con cesárea. Antes y después del procedimiento quirúrgico se estimaron la pérdida de sangre, los parámetros de hemoglobina y hematocrito y se compararon con el grupo de control. RESULTADOS: Se estudiaron 91 pacientes: 45 en el grupo experimental y 46 de solo cesárea. Se observaron diferencias significativas en la pérdida de sangre del grupo experimental (345.56 ± 64.69 mL) en comparación con el grupo control (426.06 ± 125.49 mL; p = 0.000247), en los parámetros de hemoglobina (grupo experimental: 11:13 ± 1.62 g/dL; grupo control: 10.49 ± 1.32 g/dL, p = 0.037) y hematocrito (grupo experimental: 33.86%; grupo control: 31.87%; p = 0.017). CONCLUSIÓN: La ligadura bilateral de las arterias uterinas a pacientes con factores de riesgo de hemorragia poscesárea es una medida preventiva eficaz que ayuda a disminuir la pérdida sanguínea. Al complementarla con los uterotónicos reduce el volumen de sangrado.

Abstract OBJECTIVE: Evaluation of the benefits and harms of bilateral uterine artery ligation for prevention of postpartum hemorrhage in patients with risk factors. MATERIALS AND METHODS: Prospective, experimental, randomized, case-control, longitudinal, comparative study conducted during 2022, which included patients with risk factors for postpartum hemorrhage who terminated pregnancy by emergency cesarean section. Two groups were included: the experimental group, in which the technique of bilateral uterine artery ligation was applied, and the control group, in which only cesarean section was performed. Before and after the surgical procedure, blood loss, hemoglobin and hematocrit parameters were estimated and compared with the control group. RESULTS: Ninety-one patients were studied: 45 in the experimental group and 46 in the cesarean only group. Significant differences were observed in blood loss in the experimental group (345.56 ± 64.69 mL) compared to the control group (426.06 ± 125.49 mL; p = 0.000247), in hemoglobin (experimental group: 11:13 ± 1.62 g/dL; control group: 10.49 ± 1.32 g/dL, p = 0.037) and hematocrit (experimental group: 33.86%; control group: 31.87%; p = 0.017). CONCLUSION: Bilateral uterine artery ligation in patients with risk factors for post-cesarean hemorrhage is an effective preventive measure that helps to reduce blood loss. When combined with uterotonics, it reduces the volume of bleeding.

Endoscopic Study of Ethmoidal Canals in Cadavers, Including a Histological Analysis of Their Contents

Abstract Introduction The advent of the endoscope has enabled the use of the endonasal approach for a variety of diseases. Studying the ethmoidal canals is important for surgeries of the paranasal sinuses and the anterior base of the skull. Objective To investigate the ethmoidal canals and evaluate their structure, the presence of vessels and nerves, their location, and to perform an anatomopathological study of their contents. Methods We evaluated 20 cadavers (20 left and 20 right nasal cavities) through endoscopic dissection of the anterior base of the skull and exposure of the medial periorbita and dura mater; then, the ethmoidal canals were located and measured in relation to the anterior wall of the sphenoid sinus and between the ethmoidal canals, followed by removal of their content for histological analysis. Results Vessels were present in 75% of the left anterior ethmoidal canals, 70% of the left posterior ethmoidal canals, 75% of the left middle ethmoidal canals, 85% of the right anterior ethmoid canals, and 64.5% of the right posterior ethmoid canals; 50% of the right middle ethmoidal canals contained one vessel. Conclusion The ethmoidal canal does not necessarily contain an ethmoidal artery. Studies with a larger sample should be performed to quantify the correct proportion of arteries and ethmoidal canals.

Diretrizes da Sociedade Brasileira de Angiologia e Cirurgia Vascular para o tratamento da doença cerebrovascular extracraniana / Brazilian Angiology and Vascular Surgery Society Guidelines for the treatment of extracranial cerebrovascular disease

Resumo A doença cerebrovascular extracraniana tem sido intensamente investigada em todo o mundo, sendo tema de suma importância para os cirurgiões vasculares. A presente Diretriz foi elaborada pela Sociedade Brasileira de Angiologia e Cirurgia Vascular (SBACV) em sucessão à Diretriz de 2015. As doenças de etiologia não ateroscleróticas não foram incluídas nesse documento. O objetivo desta Diretriz é congregar as evidências mais robustas nessa área para auxiliar os especialistas no processo decisório do tratamento. Foi utilizada a metodologia AGREE II e o sistema da Sociedade Europeia de Cardiologia para as recomendações e níveis de evidências. As recomendações foram graduadas de I a III, e os níveis de evidência classificados em A, B e C. A presente Diretriz foi dividida em 11 capítulos, que tratam dos vários aspectos da doença cerebrovascular extracraniana: diagnóstico, tratamentos e complicações, de forma atualizada e com as recomendações propostas pela SBACV.

Abstract Extracranial cerebrovascular disease has been the subject of intense research throughout the world, and is of paramount importance for vascular surgeons. This guideline, written by the Brazilian Society of Angiology and Vascular Surgery (SBACV), supersedes the 2015 guideline. Non-atherosclerotic carotid artery diseases were not included in this document. The purpose of this guideline is to bring together the most robust evidence in this area in order to help specialists in the treatment decision-making process. The AGREE II methodology and the European Society of Cardiology system were used for recommendations and levels of evidence. The recommendations were graded from I to III, and levels of evidence were classified as A, B, or C. This guideline is divided into 11 chapters dealing with the various aspects of extracranial cerebrovascular disease: diagnosis, treatments and complications, based on up-to-date knowledge and the recommendations proposed by SBACV.

Avaliação das alterações anatômicas da bifurcação da artéria braquial através do eco-Doppler vascular: um estudo transversal / Assessment of anatomic variations of the brachial artery bifurcation using vascular Doppler ultrasound: a cross-sectional study

Resumo Contexto Variações anatômicas em artérias do membro superior, como a presença da artéria braquial acessória, são comuns e amplamente descritas na literatura, principalmente por estudos em cadáveres. No entanto, atualmente, é possível realizar o diagnóstico através do eco-Doppler vascular. Objetivos Identificar a incidência da artéria braquial acessória pelo eco-Doppler e comparar os achados com estudos cadavéricos. Métodos Tratou-se de um estudo prospectivo em 500 membros superiores de 250 voluntários avaliados pelo eco-Doppler com o aparelho portátil de ultrassom Sonosite Titan. Resultados Dos participantes do nosso estudo, 15,6% apresentaram a variação anatômica da artéria braquial acessória. A porcentagem está dentro da média encontrada em estudos cadavéricos, que varia de 0,2 até 22%. Ter conhecimento dessa variação é fundamental em procedimentos como punção venosa periférica, fístula arteriovenosa, cateterismo, retalhos de antebraço, cirurgias de emergência no membro superior e até mesmo correção de fraturas por gesso. Conclusões A artéria braquial acessória é uma variante frequente no membro superior. O percentual de indivíduos com a artéria braquial acessória em nosso estudo foi de 15,6% e coincide com os dados da literatura de estudos cadavéricos.

Abstract Background Anatomical variations in arteries of the upper limb, such as presence of an accessory brachial artery, are common and widely described in the literature, mainly in cadaveric studies, but it is now possible to diagnose them using vascular Doppler ultrasound. Objectives To identify the incidence of accessory brachial artery using vascular Doppler ultrasound and compare the findings with cadaveric studies. Methods This was a prospective study that examined 500 upper limbs of 250 volunteers assessed with vascular Doppler ultrasound using the Sonosite Titan portable ultrasound machine. Results 15.6% of the participants in our study had the accessory brachial artery anatomical variation. Our percentage is in line with the average rates found in cadaveric studies, which ranged from 0.2% to 22%. Being aware of this variation is fundamental in procedures such as peripheral venipuncture, arteriovenous fistula creation, catheterization, forearm flaps, emergency surgeries on the limb and even correction of fractures by cast. Conclusions The accessory brachial artery is a frequent variant in the upper limb. The percentage of individuals with an accessory brachial artery in our study was 15.6%, which agrees with data from the literature on cadaveric studies.

Fenómeno de Milking secundario a puente intramiocárdico en paciente con bloqueo trifascicular

Introducción: los puentes intramiocárdicos son una modificación anatómica de la circulación coronaria que consisten en secciones anormales en el espesor del miocardio que al formar segmentos tunelizados e incorporarse al epicardio, provocan un ordeñamiento vascular llamado fenómeno de Milking durante la compresión sistólica extrínseca, el cual es responsable de las manifestaciones clínicas y las alteraciones electrocardiográficas. Se describe un caso clínico con el objetivo de comunicar a la comunidad científica las características clínicas, eléctricas y coronariográficas de una paciente con síndrome coronario agudo con bloqueo trifascicular y fenómeno de Milking por puente intramiocárdico. Caso clínico: mujer de56 años, con antecedentes de hipertensión arterial, obesidad e historia de ingresos frecuentes por episodios de angina inestables; fue admitida por angina inestable aguda más bloqueo trifascicular y se confirmó puente intramiocárdico en el segmento medio distal de la arteria descendente anterior izquierda. La optimización de la terapia antiisquémica se basó en Carvedilol, previa implantación de marcapaso permanente. Discusión: los puentes intramiocárdicos causan reducción dinámica de la luz del vaso epicárdico coronario y cuando resulta mayor del 50% condiciona el fenómeno de Milking, el cual es más frecuente en los segmentos medio y distal de la arteria descendente anterior izquierda, su evolución es favorable y responden a la terapéutica con ß bloqueadores de forma adecuada. Conclusiones: la correlación diagnóstica facilitó la aplicación de una conducta invasiva con estimulación transvenosa permanente que permitió iniciar tratamiento betabloqueante lo cual no hubiera sido posible por el trastorno de la conducción intraventricular.

Introduction: Intramyocardial bridges are an anatomical modification of the coronary circulation consisting of abnormal sections in the thickness of the myocardium that, when forming tunnel segments and incorporating into the epicardium, cause vascular milking, the so-called milking phenomenon, during extrinsic systolic compression, which is responsible for the clinical manifestations and electrocardiographic alterations. A clinical case is described with the aim of providing the scientific community with the clinical, electrical and coronary angiographic characteristics of a patient with acute coronary syndrome with trifascicular block and milking phenomenon due to intramyocardial bridging. Case Report: A 56-year-old woman with a history of hypertension, obesity, and frequent admissions for episodes of unstable angina was admitted for acute unstable angina plus trifascicular block and intramyocardial bridging was confirmed in the distal middle segment of the left anterior descending artery. Optimization of anti-ischemic therapy was based on carvedilol after implantation of a permanent pacemaker. Discussion: Intramyocardial bridges cause a dynamic reduction of the coronary epicardial vessel lumen and when it is greater than 50% it causes a milking phenomenon, which is more frequent in the middle and distal segments of the left anterior descending artery, its evolution is favorable and responds adequately to ß-blocker therapy. Conclusions: The diagnostic correlation facilitated the application of an invasive approach with permanent transvenous stimulation, allowing the initiation of beta-blocker treatment, which would not have been possible due to the intraventricular conduction disorder.

Introdução: As pontes intramiocárdicas são uma modificação anatómica da circulação coronária constituída por secções anómalas na espessura do miocárdio que, ao formarem segmentos em túnel e ao incorporarem-se no epicárdio, provocam a ordenha vascular, o chamado fenómeno de ordenha, durante a compressão sistólica extrínseca, responsável pelas manifestações clínicas e alterações electrocardiográficas. Descreve-se um caso clínico como objetivo de dar a conhecer à comunidade científica as características clínicas, eléctricas e coronariográficas de um doente com síndrome coronário agudo com bloqueio trifascicular e fenómeno de milking por bridging intramiocárdico. Relato de Caso: Mulher de 56 anos, com antecedentes de hipertensão arterial, obesidade e internamentos frequentes por episódios de angina instável, foi internada por angina aguda instável com bloqueio trifascicular e confirmação de ponte intramiocárdica no segmento médio distal da artéria descendente anterior. A otimização da terapêutica anti-isquémica foi baseada no carvedilol após implantação de pacemaker definitivo. Discussão: As pontes intramiocárdicas provocam uma redução dinâmica do lúmen do vaso epicárdico coronário e quando esta é superior a 50% provoca um fenómeno de ordenha, mais frequente nos segmentos médio e distal da artéria descendente anterior, a sua evolução é favorável e responde adequadamente à terapêutica com ß-bloqueantes. Conclusões: A correlação diagnóstica facilitou a aplicação de uma abordagem invasiva com estimulação transvenosa permanente, permitindo o início do tratamento com beta-bloqueadores, o que não teria sido possível devido ao distúrbio de condução intraventricular.

Evaluation of the mesenteric arterial vasculature by computed tomography angiography and its implications for colorectal cancer surgery / Avaliação da vasculatura arterial mesentérica pela angiotomografia computadorizada e suas implicações na cirurgia do câncer colorretal

Abstract Objective: To determine the branching patterns of the inferior mesenteric artery (IMA) and to describe the clinical applicability of computed tomography (CT) angiography in the evaluation of these vessels to facilitate the planning of colorectal cancer surgery. Materials and Methods: We included 100 patients who underwent CT angiography of the abdomen and pelvis. The branching patterns of the IMA were examined and classified as type 1 (bifurcated), including 1A (sigmoid and left colic arteries arising from a common trunk), 1B (sigmoid and superior rectal arteries arising from a common trunk) and 1C (sigmoid arteries arising from both trunks); type 2 (trifurcated); and type 3 (no left colic branch). Results: Among the 100 patients evaluated, we found the variant to be type 1A in 9%, type 1B in 47%, type 1C in 24%, type 2 in 16%, and type 3 in 4%. Conclusion: Preoperative CT angiography for evaluating the IMA branching pattern could inform decisions regarding the surgical approach to colorectal cancer.

Resumo Objetivo: Determinar os padrões de ramificação da artéria mesentérica inferior (AMI) e descrever a aplicabilidade clínica da angiografia por tomografia computadorizada na avaliação desses vasos na elaboração das estratégias pré-operatórias de cirurgia de câncer colorretal. Materiais e Métodos: Foram incluídos 100 pacientes submetidos a angiografia por tomografia computadorizada abdominal e pélvica. Os padrões de ramificação da AMI foram examinados e classificados como tipo 1 (bifurcado), incluindo 1A (artérias sigmoide e cólica esquerda originando-se de um tronco comum), 1B (artérias sigmoide e retal superior originando-se de um tronco comum) e 1C (artérias sigmoide originando-se de ambos os troncos); tipo 2 (trifurcado); e tipo 3 (sem ramo cólico esquerdo). Resultados: Do total de participantes incluídos no estudo, a variante do tipo 1A foi observada em 9%, a do tipo 1B em 47%, e a do tipo 1C em 24%. Com relação à variante tipo 2, esta foi observada em 16% dos pacientes, e a do tipo 3, em 4% dos casos. Conclusão O uso da angiografia por tomografia computadorizada pré-operatória para avaliar o padrão de ramificação da AMI pode ajudar a escolher a abordagem cirúrgica no câncer colorretal.

Effects of antenatal corticosteroids on fetal hemodynamics: a longitudinal study / Efeitos do corticoide antenatal na hemodinâmica fetal: um estudo longitudinal

Abstract Objective: To study the effect of antenatal corticosteroid administration on fetal hemodynamics using longitudinal analysis of Doppler waveforms in the umbilical artery (UA) and middle cerebral artery (MCA). Materials and Methods: This was a retrospective study that included 30 fetuses at risk for preterm birth. Twenty-eight pregnant women were treated with betamethasone for fetal lung maturation. Doppler examinations of the UA and MCA were performed once before and three or eight times after corticosteroid administration. We used a Bayesian hierarchical linear model. Reference ranges were constructed, and associations between variables (gestational age and pre-eclampsia) were tested. Results: The mean maternal age, gestational age at betamethasone administration, and gestational age at delivery were 32.6 ± 5.89 years, 30.2 ± 2.59 weeks, and 32.9 ± 3.42 weeks, respectively. On UA Doppler, there was a significant decrease in the pulsatility index (PI) after corticosteroid administration, with a mean of 0.1147 (credibility interval: 0.03687-0.191) in three observations and a median of 0.1437 (credibility interval: 0.02509-0.2627) in eight observations. However, there was no significant change in the Doppler MCA PI, regardless of gestational age and the presence or absence of pre-eclampsia. Conclusion: Although antenatal corticosteroid administration induced a significant decrease in the Doppler UA PI, we observed no change in the cerebral vasculature.

Resumo Objetivo: Estudar o efeito da administração antenatal de corticosteroides na hemodinâmica fetal mediante análise longitudinal do Doppler na artéria umbilical e artéria cerebral média (ACM). Materiais e Métodos: Este foi um estudo retrospectivo que incluiu 30 fetos com risco de nascimento pré-termo. Vinte e oito gestantes foram tratadas com betametasona para maturação pulmonar fetal. Os exames de Doppler da AU e da ACM foram realizados uma vez antes e depois da administração de corticosteroides, num total de três ou oito observações. Utilizamos o modelo linear hierárquico com abordagem Bayesiana. Foram construídos os intervalos de referência e testadas associações entre variáveis (idade gestacional e pré-eclâmpsia). Resultados: A média ± desvio-padrão da idade materna, idade gestacional na administração de betametasona e idade gestacional no parto foram 32,6 ± 5,89 anos, 30,2 ± 2,59 semanas e 32,9 ± 3,42 semanas, respectivamente. No Doppler da AU, verificou-se diminuição significativa do índice de pulsatilidade (IP) com a terapêutica com corticosteroides (média: 0,1147 [0,03687-0,191]; em três observações) (mediana: 0,1437 [0,02509-0,2627]; em oito observações). No entanto, não foi observada alteração significativa no IP do Doppler da ACM, independentemente da idade gestacional e do diagnóstico de pré-eclâmpsia. Conclusão: Os corticosteroides pré-natais induziram diminuição significativa no IP do Doppler da AU, mas não houve alteração na vasculatura cerebral.

Relationship between platelet-related parameters and new-onset atrial fibrillation after coronary bypass surgery

SUMMARY OBJECTIVE: Inflammation plays a key role in the pathogenesis of postoperative atrial fibrillation after coronary artery bypass graft surgery. In this study, we aimed to investigate the changes in mean platelet volume and platelet values during the spring and autumn seasons in patients who underwent isolated coronary artery bypass graft surgery and the possible effect of these occurrences on postoperative atrial fibrillation. METHODS: Consecutive patients who underwent elective isolated coronary bypass surgery at our clinic in the spring and autumn months, between August 2020 and July 2022, were retrospectively included in this study. Variables were evaluated according to the spring and autumn seasons. Patients who did not develop in-hospital postoperative atrial fibrillation were identified as Group 1, and those who did constituted Group 2. RESULTS: A total of 622 patients were included in the study. The patients were divided into two groups: those who were operated on in the spring (n=277, median age=62 years, male gender ratio=77.3%) and those who were operated on in the autumn (n=345, median age=61 years, male gender ratio=81.4%). There was no statistically significant difference between the patients operated on in both seasons in terms of age, gender, hypertension rates, and the frequency of chronic obstructive pulmonary disease. In multivariate analysis, being over 70 years old (OR: 1.934, 95% confidence interval (CI) 1.489-2.995, p<0.001), having a left ventricular ejection fraction below 30% (OR: 1.550, 95%CI 1.190-2.236, p=0.012), and having chronic obstructive pulmonary disease (OR: 1.663, 95%CI 1.339-2.191, p<0.001) were found to be independent predictors in predicting the development of postoperative atrial fibrillation. CONCLUSION: In this study, we first demonstrated that mean platelet volume and platelet mass index values were higher in patients in the autumn months. Additionally, for the first time in the literature, we showed that there is a significant relationship between platelet mass index value and the development of postoperative atrial fibrillation in patients who underwent isolated coronary artery bypass graft.