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Resumen Introducción: La progresión del 10 al 30% del cáncer de próstata a metástasis y su resistencia a la terapia de deprivación androgénica (TDA) configuran el cáncer de próstata resistente a castración metastásico (CPRCm), en el que medicamentos como la abiraterona mejoran la sobrevida, pero a costa de efectos secundarios cardiovasculares entre los que se incluyen prolongación de QT e hipocalemia. La asociación entre arritmias ventriculares tipo torsade de pointes (TdP) y la abiraterona es rara, por lo cual se reporta este caso. Caso clínico: Se trata de un hombre de 81 años, que ingresó a urgencias por síncope, y en quien inicialmente se halló bloqueo de rama derecha y prolongación del QTc y posteriormente desarrolló TdP facilitada por hipocalemia grave e hipomagnesemia. La función sistólica estaba levemente reducida y se encontró enfermedad coronaria no significativa. Requirió desfibrilación, corrección de hipocalemia e hipomagnesemia, con normalización del QTc. Los resultados del eje adrenal fueron compatibles con hiperaldosteronismo secundario a abiraterona de reciente inicio, por lo que se suspendió esta terapia y se ajustó la suplencia esteroidea. Egresó sin ninguna complicación. Conclusiones: La terapia hormonal en el cáncer de próstata tiene repercusiones cardiovasculares, de ahí que tanto el abordaje como el seguimiento multidisciplinario sean indispensables en pacientes de edad avanzada y con predisposición por anormalidades estructurales.

Abstract Introduction: The progression of 10-30% of prostate cancer (PC) to metastasis and its resistance to androgen deprivation therapy (ADT) constitutes metastatic castration-resistant prostate cancer (mCRPC), in which new therapies such as abiraterone improve survival, but with significant cardiovascular side effects such as QT prolongation and hypokalemia. The association between torsade de pointes (TdP) ventricular arrhythmias and abiraterone is rare, which is why we report this case. Clinical case: An 81-year-old man was seen in the emergency room after syncope, with an initial ECG showing a right bundle branch block, supraventricular extrasystoles with QTc prolongation, and subsequent TdP associated with severe hypokalemia and hypomagnesemia. Ventricular systolic function was slightly reduced, and he was found to have mild coronary artery disease. His management required defibrillation along with hypokalemia and hypomagnesemia correction, resulting in QTc normalization. Abiraterone was discontinued and corticosteroid supplementation was added. The adrenal axis results were compatible with hyperaldosteronism secondary to the recent use of abiraterone. The patient was discharged without any complications. Conclusions: Hormone therapy in PC has cardiovascular repercussions; therefore, a multidisciplinary approach and follow-up is essential in elderly patients with structural abnormalities that predispose them to major complications such as acquired long QTc and TdP.

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Introduction. The management of patients with chronic noncommunicable diseases, when it follows evidence-based recommendations, improves clinical outcomes and health costs. Despite its importance, little is known about adherence to guidelines and the processes for its monitoring in our environment. The objective of this study was to report the applicability and adherence to a selection of recommendations from clinical practice guidelines for noncommunicable chronic diseases by doctors in Bogotá. Methods. This was a cross-sectional study, the baseline of a cluster experiment that assessed the impact of disseminating recommendations on seven chronic diseases to patients, caregivers, and physicians. A total of 177 physicians from public and private health institutions were invited. Consecutive samples of their medical records were manually reviewed in predefined time ranges (up to 20 patients per physician, with up to two diseases of interest). The proportions of applicability and adherence were calculated according to 40 recommendations. Results. The 177 physicians who participated (out of 266 eligible) were from seven institutions, and 3,747 medical records (21,093 patients/recommendation) were analyzed. The general applicability was 31.9% (95% CI 31.3-32.6%), and it varied considerably by recommendation (range 0.3-100%) and disease (range 10.7-65%). Overall adherence was 42.0% (95% CI 40.8-43.2%), with higher adherence in acute coronary syndrome patients (58.4%) and lower adherence in diabetes mellitus patients (23.7%). Discussion. This is the most up-to-date, exhaustive, and representative measurement of adherence to guideline recommendations by doctors in Bogotá. Conclusions. Adherence to evidence-based recommendations for patients with chronic noncommunicable diseases in Bogotá is poor and highly variable. Keywords: Practice Guideline; Evidence-Based Medicine; Noncommunicable Diseases; Quality of Health Care; Implementation Science; Internal Medicine; Primary Health Care

Introducción. El manejo de pacientes con enfermedades crónicas no transmisibles, cuando se realiza a partir de recomendaciones basadas en la evidencia, mejora los desenlaces clínicos y los costos en salud. Pese a su importancia, poco se conocen la adherencia a las recomendaciones de guías y los procesos para su monitoreo en nuestro medio. El objetivo de este estudio es reportar la aplicabilidad y la adherencia a una selección de recomendaciones de guías de práctica clínica, en enfermedades crónicas no transmisibles, por médicos de Bogotá. Metodología. Estudio de corte MSc.Participaron 177 médicos de instituciones de salud públicas y privadas. Se revisaron manualmente muestras consecutivas de sus historias clínicas en rangos de tiempo predefinidos (meta hasta 20 pacientes por médico, en hasta dos enfermedades de interés). Se calcularon las proporciones de aplicabilidad y adherencia en 40 recomendaciones. Resultados. Participaron 177 médicos (de 266 elegibles), de 7 instituciones, con 3,747 historias clínicas (21,093 pacientes/recomendación) analizadas. La aplicabilidad general fue 31.9% (IC95% 31.3%-32.6%), y varió considerablemente por recomendación (rango 0.3%-100%) y enfermedad (rango 10.7%-65%). La adherencia general fue 42.0% (IC95% 40.8% -43.2%), siendo mayor en síndrome coronario agudo (58.4%) y menor en diabetes mellitus (23.7%). Discusión. Esta es la medición más actualizada, exhaustiva y representativa de la adherencia a las recomendaciones de guías por parte de médicos de Bogotá. Conclusiones. La adherencia a recomendaciones basadas en evidencia, para pacientes con enfermedades crónicas no transmisibles de Bogotá, es deficiente y altamente variable. Palabras clave: Guía de Práctica Clínica; Medicina Basada en la Evidencia; Enfermedades no Transmisibles; Calidad de la Atención de Salud; Ciencia de la Implementación; Medicina Interna; Atención Primaria de Salud

Introdução. O manejo de pacientes com doenças crônicas não transmissíveis, quando realizado com base em recomendações baseadas em evidências, melhora os resultados clínicos e os custos de saúde. Apesar da sua importância, pouco se sabe sobre a adesão às recomendações das diretrizes e os processos para monitorá-la em nosso meio. O objetivo deste estudo é relatar a aplicabilidade e adesão a uma seleção de recomendações das diretrizes de prática clínica, em doenças crônicas não transmissíveis, por médicos em Bogotá. Metodologia. Estudo transversal (linha de base de um experimento cluster que avalia o impacto da divulgação de recomendações sobre sete doenças crônicas a pacientes, cuidadores e médicos). Participaram 177 médicos de instituições de saúde públicas e privadas. Foram revisadas manualmente amostras consecutivas de seus prontuários em intervalos de tempo pré-definidos (alvo de até 20 pacientes por médico, em até duas doenças de interesse). Foram calculadas proporções de aplicabilidade e adesão para 40 recomendações. Resultados. Participaram 177 médicos (de 266 elegíveis), de 7 instituições, com 3,747 prontuários (21,093 pacientes/recomendação) analisados. A aplicabilidade geral foi de 31.9% (IC 95% 31.3%-32.6%) e variou consideravelmente por recomendação (intervalo 0.3%-100%) e doença (intervalo 10.7%-65%). A adesão geral foi de 42.0% (IC 95% 40.8%-43.2%), sendo maior na síndrome coronariana aguda (58.4%) e menor na diabetes mellitus (23.7%). Discussão. Esta é a medição mais atualizada, exaustiva e representativa da adesão às recomendações das diretrizes por médicos em Bogotá. Conclusões. A adesão às recomendações baseadas em evidências para pacientes com doenças crônicas não transmissíveis em Bogotá é fraca e altamente variável. Palavras-chave: Guia de Prática Clínica; Medicina Baseada em Evidências; Doenças não Transmissíveis; Qualidade da Assistência à Saúde; Ciência da Implementação; Medicina Interna; Atenção Primária à Saúde

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The formation of microparticles (MPs) of biocompatible and biodegradable hydrogels such as polyethylene glycol diacrylate (PEGDA) utilizing microfluidic devices is an attractive option for entrapment and encapsulation of active principles and microorganisms. Our research group has presented in previous studies a formulation to produce these hydrogels with adequate physical and mechanical characteristics for their use in the formation of MPs. In this work, hydrogel MPs are formed based on PEGDA using a microfluidic device with a T-junction design, and the MPs become hydrogel through a system of photopolymerization. The diameters of the MPs are evaluated as a function of the hydrodynamic condition flow rates of the continuous (Qc) and disperse (Qd) phases, measured by optical microscopy, and characterized through scanning electron microscopy. As a result, the following behavior is found: the diameter is inversely proportional to the increase in flow in the continuous phase (Qc), and it has a significant statistical effect that is greater than that in the flow of the disperse phase (Qd). While the diameter of the MPs is proportional to Qd, it does not have a significant statistical effect on the intervals of flow studied. Additionally, the MPs' polydispersity index (PDI) was measured for each experimental hydrodynamic condition, and all values were smaller than 0.05, indicating high homogeneity in the MPs. The microparticles have the potential to entrap pharmaceuticals and microorganisms, with possible pharmacological and bioremediation applications.

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Abstract The pandemic generated multiple biopsychosocial challenges that significantly impacted the health of trans women. The aim of this study is to characterize emotional states and resilience in trans women in Colombia and their relationship to COVID-19 adherence behaviors and prevention behaviors during lockdown. The study employed a cross-sectional descriptive correlational design, with an anonymous online questionnaire that was given to 100 trans women in five cities in Colombia. During the pandemic, more than half of trans women experienced negative emotional states such as depression, anxiety and somatization, and some positive ones such as resilience and personal growth. The latter two contribute to reinforcing adherence and prevention behaviors. This study demonstrates a clear need to give priority and recognition to trans women and their health needs, in order to protect their rights, their well-being, and their health.

Resumo A pandemia gerou múltiplos desafios biopsicossociais que impactaram significativamente a saúde das mulheres trans. O objetivo deste estudo é caracterizar estados emocionais e resiliência em mulheres trans da Colômbia e sua relação com os comportamentos de aderência à COVID-19 e os comportamentos de prevenção durante o confinamento. Foi realizado um desenho descritivo, transversal e correlacional, foi administrado um questionário online anônimo a 100 mulheres trans em cinco cidades da Colômbia. Durante a pandemia, mais da metade das mulheres trans experimentaram estados emocionais negativos como depressão, ansiedade e somatização, e alguns positivos como a resiliência e o crescimento pessoal. Estes dois últimos contribuem para reforçar os comportamentos de adesão e de prevenção. Em situações como a pandemia, é prioritário dar reconhecimento às mulheres trans e às suas necessidades de saúde, a fim de proteger os seus direitos e a sua saúde integral.

Resumen La pandemia generó múltiples desafíos biopsicosociales que impactaron significativamente en la salud de las mujeres trans. El objetivo del presente estudio fue caracterizar los estados emocionales y resiliencia en mujeres trans de Colombia y su relación con las conductas de adherencia y prevención a la COVID-19 durante el confinamiento. Se realizó un diseño trasversal correlacional descriptivo, administrando un cuestionario online anónimo a 100 mujeres trans en cinco ciudades de Colombia. Se encontró que más de la mitad de las mujeres trans han experimentado estados emocionales negativos como depresión, ansiedad y somatización y algunos positivos como resiliencia y crecimiento personal. Los dos últimos contribuyen a fortalecer las conductas de adherencia y prevención de la COVID-19. Es prioritario dar reconocimiento a las mujeres trans y a sus necesidades de salud, desde diversos frentes de acción con el fin de proteger sus derechos y su salud integral.

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Introducción: de todos los carcinomas de tiroides, los diferenciados son los predominantes. Según la Asociación Colombiana de Endocrinología, la tasa de recaída puede ser de hasta del 30 %, especialmente en pacientes mayores de 45 años y con características tumorales agresivas. En esta investigación se estimó el tiempo libre de enfermedad que transcurre entre la finalización del tratamiento y la ocurren-cia de la primera recaída. Materiales y métodos: se tomó un archivo de datos con los registros de 469 pacientes con cáncer diferenciado de tiroides (cdt) tratados en una clínica especializada de cuarto nivel de complejidad en Bogotá (Colombia). Los datos se recolectaron entre enero de 1997 y diciembre de 2012 y se analizaron estadísticamente usando modelos paramétricos y no paramétricos para obtener las curvas de supervivencia y riesgo. Resultados: con el método no paramétrico se evidenció que en 8.5 años el 75 % de los pacientes no habrán presentado la primera recaída en cdt; mientras que en el método paramétrico el 50 % de los pacientes que no presentaron una tiroglobulina postratamiento menor o igual a 1 ng/mL y un tamaño del tumor menor o igual a 2 cm, su tiempo estimado de la primera recaída fue 29.2 años. Conclusiones: el tiempo libre de enfermedad y el riesgo de hacer recaída para pacientes con cdt está afectado por la presencia de un tamaño de tumor mayor a 2 cm en el momento de la consulta y una cantidad de tiroglobulina mayor a 1 ng/mL, registrada al terminar el tratamiento.

Introduction: Between all thyroid carcinomas, the differentiated are predominant. According to the Colombian Association of Endocrinology, the relapse rate can be up to 30%, especially in patients older than 45 years old and with aggressive tumor characteristics. In this investigation, the time that elapses between the initial surgical treatment and the first relapse of the disease was estimated. Materials and methods: A data file was taken with the records of 469 patients with differentiated thyroid cancer (cdt) treated in a specialized clinic of fourth level of complexity iv in the city of Bogotá (Colombia). Data were collected between January 1997 and December 2012 and were statistically analyzed using para-metric and non-parametric models to obtain survival curves and risk. Results: With the non-parametric method, it is evident that in 8.5 years 75% of the patients will not have presented the first relapse in cdt. While applying the parametric method 50% of patients who do not have a postreatment thyroglobulin or one less than or equal to 1 ng/mL and a tumour size less than or equal to 2 cm, their estimated time of First relapse was 29.2 years. Conclusions: Disease-free time and the risk of relapse for patients with cdt is affected by the presence of a tumor size greater than 2 cm at the time of consultation and levels of thyroglobulin greater than 1 ng/mL, recorded at the end of the treatment.

Introdução: de todos os carcinomas da tireoide, os diferenciados são os predominantes. Segundo a Associação Colombiana de Endocrinologia, a taxa de recaída pode ser até 30%, principalmente em pacien-tes com mais de 45 anos e com características de agressividade tumoral. Nesta investigação, estimou-se o tempo decorrido entre o tratamento cirúrgico inicial e a primeira recaída. Materiais e métodos: tomou-se um arquivo de dados com os prontuários de 469 pacientes com câncer diferenciado de tireoide (cdt) atendidos em uma clínica especializada de quarto nível de complexidade na cidade de Bogotá (Colombia). Coletaram-se os dados entre janeiro de 1997 e dezembro de 2012, que depois foram analisados estatisti-camente usando modelos paramétricos e não paramétricos para encontrar curvas de sobrevida e risco. Resultados: com o método não paramétrico, evidenciou-se que, em 8,5 anos, 75% dos pacientes não terão apresentado a primeira recaída na cdt. Enquanto na aplicação do método paramétrico, 50% dos pacientes que não apresentaram tireoglobulina pós-tratamento ou valores menores ou iguais a 1 ng/mL e tamanho do tumor menor ou igual a 2 cm, seu tempo estimado de primeira recaída foi de 29,2 anos. Conclusões: o tempo livre de doença e o risco de recaída, para pacientes com cdt são afetados pela presença de tama-nho de tumor maior a 2 cm no momento da consulta e uma quantidade de tireoglobulina maior a 1 ng/mL, registrada ao terminar o tratamento.

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Hemorrhagic liver rupture is a rare and deadly complication. The pathogenesis is unknown. This situation forces the multidisciplinary team, the immediate termination of pregnancy, the treatment and management of the patient in an intensive care unit (ICU). We report the results of two patients with spontaneous rupture of the liver during pregnancy and HELLP (hemolysis, elevated liver enzymes, low platelet count) syndrome, asymptomatic, during cesarean section, with management in ICU, poor evolution without adequate response; one died and the other leaves hospital. Liver rupture requires high suspicion and timely, aggressive multidisciplinary management in all cases and surgical intervention in those who develop liver ruptura, to improve survival.

La hemorragia por ruptura hepática es una rara y letal complicación, de etiología desconocida. Obliga al equipo multidisciplinario a la interrupción del embarazo, al tratamiento agresivo y al manejo de la paciente en una unidad de cuidado intensivo (UCI). Se presentan dos pacientes con embarazo de término con ruptura de hematoma hepático subcapsular asociado a síndrome HELLP (hemolysis, elevated liver enzymes, low platelet count), asintomáticas, durante operación cesárea, con manejo en UCI, ambas con evolución tórpida; una fallece y la otra se egresa. La ruptura hepática requiere una alta sospecha y un manejo multidisciplinario oportuno, agresivo en todos los casos y de intervención quirúrgica en quienes desarrollen ruptura hepática, para mejorar la supervivencia.

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Depression entails changes in the mental health of individuals worldwide. Episodes of depression lead to mood swings and changes in the motivational dimension. Our research focused on the prevalence of depression in the adult population and on how it affected the social and affective dimensions. Owing to the current pandemic, we deemed it necessary to explore how protective measures against COVID-19 infection, such as quarantines, could be related to mental health. Moreover, we found it important to determine the prevalence of depressive and anxious symptomatology in adults from the Valle del Cauca region in Colombia during the social isolation connected to COVID-19. Our study was descriptive, analytical and cross-sectional, and involved 1248 subjects. As tools, we used the Hamilton Depression Rating Scale and the Hamilton Anxiety Rating Scale. The data demonstrated that women were more likely to display symptoms of depression and that individuals aged between 24 and 29 were less likely to reveal symptoms of anxiety than those aged between 18 and 23. Moreover, childless or economically dependent individuals proved to be more likely to display symptoms of depression during the pandemic.

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Resumen El Staphylococcus aureus es uno de los principales microorganismos causantes de mastitis subclínica en las vacas lecheras. Determinar la prevalencia del S. aureus se hace necesario en vacas de hatos lecheros grandes y pequeños ubicados en la región norte, centro y sur del departamento del Valle del Cauca, Colombia. Se utilizó la metodología del National Mastitis Council recolectando 1070 muestras de leche de 273 vacas en 17 hatos mediante un muestreo polietápico, durante el periódo 2015 - 2016. Se realizó cultivo con todas las muestras recolectadas independientemente del resultado de la prueba de California mastitis test. Se utilizó el análisis bayesiano de los datos para obtener estimaciones más precisas. La prevalencia bayesiana del patógeno S. aureus en vacas lecheras en el Valle del Cauca fue de 31,94% y se tiene un 95% de probabilidad de que el intervalo (30,03 - 37,62%) contenga el valor de dicha prevalencia. La región Norte, Centro y Sur evidenciaron prevalencias de 33%, 34% y 24% respectivamente. En cuanto al tamaño del hato se evidenció que las vacas de los hatos pequeños presentan mayor prevalencia con 47% que las vacas de los hatos grandes 17% a la presencia del patógeno. La alta prevalencia encontrada en las vacas genera un alto impacto en la salud pública debido a una posible contaminación zoonótica por este patógeno.

Abstract Staphylococcus aureus is one of the main microorganisms responsible of subclinical mastitis in dairy cows. To determine the bayesian prevalence of S. aureus of cows in large and small dairy farms located in the northern, central and southern region of the Valle del Cauca province in Colombia. We Followed the National Mastitis Council methodology, 1070 milk samples from 273 cows in 17 dairy farms by means of a multi-stage sampling, were collected during the period 2015-2016. Cultivation was carried out with all the samples. Bayesian inference was used. The prevalence of the pathogen S. aureus in dairy cows in Valle del Cauca is 31,94% and there is a 95% probability that the interval (30,03 - 37,62%). The North, Central and South regions showed prevalence values of 33%, 34% and 24% respectively. Small dairy farms have prevalence, 47%, large dairy farms 17%. The high prevalence found in the cows studied generates a high impact on public health due to possible zoonotic contamination by this pathogen.

Resumo O Staphylococcus aureus é um dos principais microrganismos causadores de mastite subclínica em vacas leiteiras. Determinar a prevalência de S. aureus em vacas de leite em pequenas e grandes rebanhos leiteiros localizados região no norte, centro e sul do estado do Valle del Cauca, Colômbia. A metodologia do Conselho Nacional de Mastite 1070 foi utilizado para coletar amostras de leite de 273 vacas em 17 rebanhos através de amostragem de vários estágios durante o período 2015 - 2016. O cultivo foi realizado com todas as amostras coletadas, independentemente do resultado do teste de mastite Califórnia. O análise Bayesiana dos dados foi utilizada para obter estimativas mais precisas. Bayesian prevalência de agentes patogénicos S. aureus em vacas leiteiras no Valle foi 31,94% e tem uma probabilidade de 95% com um intervalo 30,03% - 37,62%. As regiões Norte, Central e Sul apresentaram prevalências de 33%, 34% e 24%, respectivamente. Em relação ao tamanho do rebanho, ficou evidente que as vacas dos pequenos rebanhos apresentam maior prevalência do patogeno com 47% comparado com 17% nas vacas dos grandes rebanhos. A alta prevalência encontrada nas vacas estudadas gera alto impacto na saúde pública, agravado pelo fato de metade do leite consumido na Colômbia ser cru.

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Introducción/Objetivo: Establecer el nivel de adherencia de un grupo de mujeres trans colombianas a las medidas de prevención ante el SARS-CoV-2. Método: Diseño transversal correlacional descriptivo de una sola etapa. Se administró un cuestionario en línea anónimo a 100 mujeres trans de Colombia. Los resultados fueron obtenidos utilizando métodos estadísticos tanto frecuentistas como bayesianos (a priori- a posteriori). Resultados: Cerca de las tres cuartas partes de las mujeres participantes reportaron un alto nivel de adherencia a las conductas preventivas. Los factores asociados fueron sentirse capaz de implementar las acciones de prevención y creer en la eficacia de ellas, para evitar contagiar a otros, los conflictos con otras personas y problemas legales. Conclusiones: La autoeficacia y los comportamientos gobernados por reglas están relacionados con la adherencia a las medidas de prevención. Abordar la adherencia en tiempos de COVID-19 implica incorporar de manera integral la magnitud de las inequidades e injusticias sociales y las respuestas en salud ante una situación que afecta a la humanidad de manera diversa y diferenciada.

Introduction/Objective: To establish the level of adherence of a group of Colombian trans women to SARS-CoV-2 prevention measures. Method: Single-stage descriptive correlational cross-sectional design. An anonymous online questionnaire was administered to 100 Colombian trans women. The results were obtained using both frequentist and bayesian (a priori-a posteriori) statistical methods. Results: About three-quarters of the participating women reported a high level of adherence to preventive behaviors. Associated factors were feeling able to implement the preventive actions and believing in their effectiveness, to avoid infecting others, conflicts with others, and avoiding legal problems. Conclusions: Self-efficacy and rule-governed behaviors are related to adherence to prevention measures. Addressing adherence in times of COVID-19 implies comprehensively incorporating the magnitude of social inequities and injustices and the health responses to a situation that affects humanity in a diverse and differentiated manner.

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Resumen Introducción: Los procedimientos vasculares invasivos ocasionan infecciones sanguíneas asociadas a cuidados de la salud, entre ellas endocarditis infecciosa. Este evento adverso conlleva mayor morbimortalidad que la endocarditis infecciosa adquirida en la comunidad. Objetivo: Evaluar la prevalencia de endocarditis infecciosa asociada al cuidado de la salud y describir las características demográficas de esta población, así como los agentes etiológicos. Método: Estudio de corte transversal, en el que se incluyó población mayor de 18 años con endocarditis infecciosa asociada al cuidado de la salud, documentada entre enero de 2013 y junio de 2018 en la Fundación Cardioinfantil. Se realizó un análisis estadístico con distribución de variables de edad, sexo, procedimientos invasivos asociados, mortalidad y microorganismo aislado. Resultados: Se incluyeron 41 pacientes con una edad promedio de 60,6 años. No hubo distinción entre hombres (22, 53.6%) y mujeres (19, 46.3%). Los pacientes se agruparon, según el procedimiento realizado, en implantación de dispositivos intravasculares de alto flujo (16, 39.02%), catéter venoso central (12, 29.26%) y dispositivos intracardiacos (11, 26.82%). La prevalencia general en los procedimientos evaluados fue del 0.21%, siendo del 1.42% en dispositivos intravasculares de alto flujo, del 0.72% en dispositivos intracardiacos y del 0.08% en catéteres centrales. La mortalidad registrada fue del 4.9% (2 pacientes). En el 78.05% de los pacientes se obtuvo aislamiento microbiológico. Conclusiones: Los pacientes sometidos a procedimientos invasivos pueden tener un riesgo elevado de endocarditis infecciosa, conferido por el procedimiento. La baja tasa de mortalidad intrahospitalaria puede estar relacionada con la notable tasa de aislamiento positivo en hemocultivos, lo cual facilitó la terapia antibiótica dirigida.

Abstract Introduction: Invasive procedures the vascular tract cause health, are related to blood stream infections, among them, infective endocarditis. This adverse event leads to greater morbidity and mortality compared with community acquired infective endocarditis. Objective: To evaluate the prevalence of healthcare-associated infective endocarditis, describe the demographic characteristics of this population and the etiological agents. Method: Cross-sectional descriptive, prevalence study of prevalence. It included patients ≥18 years old with healthcare-associated infective endocarditis, documented at Fundación Cardioinfantil. Statistical analysis with distribution of variables of age, gender, invasive procedure associated and isolated microorganism was made. Results: 41 patients were obtained. The average age was 60.6 years. There was no distinction between men (22, 53.6%) and women (19, 46.3%). The patients were grouped according to the procedure performed in: implantation of high-flow intravascular devices (16, 39.02%), central venous catheter (12, 29.26%) and intracardiac devices (11, 26.82%). The general prevalence in the evaluated procedures was 0.21%, being 1.42% in high-flow intravascular devices, 0.72% in intracardiac devices and 0.08% in central catheters. The registered mortality was 4,9% (2 patients). In 78.05% of the patients, microbiological isolation was obtained. Conclusions: patients who has invasive procedures may have an incremented risk of infective endocarditis because of the procedure. The low intrahospital mortality could be related with the remarkable number of microbiological identification which facilitated a directed antimicrobial therapy.

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Photopolymerized microparticles are made of biocompatible hydrogels like Polyethylene Glycol Diacrylate (PEGDA) by using microfluidic devices are a good option for encapsulation, transport and retention of biological or toxic agents. Due to the different applications of these microparticles, it is important to investigate the formulation and the mechanical properties of the material of which they are made of. Therefore, in the present study, mechanical tests were carried out to determine the swelling, drying, soluble fraction, compression, cross-linking density (Mc) and mesh size (ξ) properties of different hydrogel formulations. Tests provided sufficient data to select the best formulation for the future generation of microparticles using microfluidic devices. The initial gelation times of the hydrogels formulations were estimated for their use in the photopolymerization process inside a microfluidic device. Obtained results showed a close relationship between the amount of PEGDA used in the hydrogel and its mechanical properties as well as its initial gelation time. Consequently, it is of considerable importance to know the mechanical properties of the hydrogels made in this research for their proper manipulation and application. On the other hand, the initial gelation time is crucial in photopolymerizable hydrogels and their use in continuous systems such as microfluidic devices.

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ABSTRACT: The diagnosis of functional gastrointestinal disorders (FGIDs) centers on symptoms-based criteria (Rome criteria). The last edition of the criteria was published in 2016. Still, few data on its validity support its use in children. We conducted a study aimed at determining the diagnostic accuracy of the Rome IV criteria through the application of questionnaires (Questionnaire of Pediatric Gastrointestinal Symptoms-Rome IV QPGS-IV) to diagnose FGIDs in children. We hypothesized that the Rome IV criteria has adequate diagnostic accuracy supporting its use for diagnosing FGIDs in children. METHODS: School children ages 10 to 18 years from Cali (Colombia) completed the Spanish version of the QPGS-IV. Children with FGIDs were matched with a group of children without FGIDs. Both groups had a medical consultation with a blinded experienced pediatric gastroenterologist (criterion standard) who provided his diagnosis. The questionnaire-based diagnoses were compared with the consultation's diagnoses. RESULTS: Of 487 schoolchildren surveyed with the QPGS-IV, 97 (20.8%) had FGIDs. Eighty-nine with FGIDs were matched with 92 children without FGIDs (mean age 13.1 years [±1.3]). We found a higher prevalence of FGIDs during the medical visit than using the self-report QPGS-IV (66.3% vs 49.2%, P = 0.001), mainly in abdominal pain disorders (19.3% vs 10.5%, P = 0.013). The Rome IV diagnostic criteria using the QPGS-IV had a sensitivity of 75% (95% confidence interval, 59-79) and 90% specificity (95% confidence interval, 83-98). Positive predictive value is 85.8%, and negative predictive value is 79.9%. CONCLUSION: Our study suggests that the QPGS-IV has adequate diagnostic accuracy.

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OBJECTIVE: The minipterional craniotomy (MPTc) has been widely accepted as a minimally invasive alternative to the pterional approach for the treatment of certain small non-ruptured anterior circulation aneurysms. The aim of this study was to determine the effectiveness and safety of the MPTc in the context of a complex and potentially harmful scenario: acute onset of subarachnoid hemorrhage (SAH) in patients harboring multiple intracranial aneurysms (MIA). METHODS: Patients harboring MIA clipped through a unilateral MPTc were selected from four retrospective databases of four high-volume neurosurgical centers. Patients with a Hunt & Hess score 4 or 5 were not considered candidates for clipping through a MPTc. Medical records and radiological images were retrospectively reviewed. Epidemiological, clinical and radiological data, as well as short-term outcome (modified Rankin scale at 6 month-follow-up) were analyzed. RESULTS: 16 patients harboring 33 aneurysms (16 ruptured, 17 non ruptured) met the inclusion criteria. Each aneurysm size was 5.7 ± 2.1 mm (range 3-11). 12 out of 33 aneurysms were located in the middle cerebral artery (MCA). Anterior communicating (ACom) and MCA aneurysms were the aneurysm locations most commonly ruptured (5 each, 62 %). Complete occlusion was achieved in 32 aneurysms (97 %) and near-complete occlusion in 1 (3%). 13 patients (93 %) were independent at 6 month-follow-up. Mortality rate was 0%. Complications included 1 cerebrospinal-fluid leakage. CONCLUSION: When indicated (Hunt Hess < 4), performing a MPTc is safe and effective in aSAH cases with multiple aneurysms.

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Introducción. La herbolaria constituye el recurso más conocido y accesible para la población mexicana por lo que la OMS, reconoce su valor terapéutico. Objetivo. Determinar si existe efectividad antibacteriana de plantas medicinales utilizadas en aceites esenciales, pastas y enjuagues dentales, a través de la revisión de reportes científicos previamente publicados. Materiales y Métodos. Se realizó una búsqueda bibliográfica en: Pubmed y SciELO de artículos relacionados con las palabras clave, en inglés, publicados de marzo 2015-marzo 2020. Resultados. Del total de los artículos revisados encontramos 170 y seleccionamos 56 para el presente estudio. Conclusiones. El uso de plantas en aceites esenciales, pastas y enjuagues dentales es efectivo ante las bacterias presentes en boca debido a la presencia de compuestos polifenólicos bioactivos que poseen efectos antibacterianos.

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This article describes a methodology that allows an approach to alternative right-censored probabilistic models for the analysis of survival, different to those usually studied (exponential, gamma, Weibull, and log-normal distribution) since it is possible that the data do not always fit with sufficient precision due to existing distributions. The methodology used allows for greater flexibility when modeling extreme observations, generally located in the right tail of data distribution, which admits that some events still have the probability of occurring, which is not the case with traditional models and the Kaplan-Meier estimator, which estimates for the longest times, survival probabilities approximately equal to zero. To show the usefulness of the methodological proposal, we considered an application with real data that relates survival times of patients with colon cancer (CC).

En el presente artículo se describe una metodología que permite tener un acercamiento a modelos probabilísticos alternativos para el análisis de supervivencia, con censura por la derecha, distintos a los que usualmente se estudian (distribución: exponencial, gamma, Weibull y log-normal), ya que es posible que los datos no se ajusten siempre con suficiente precisión por las distribuciones existentes. La metodología utilizada permite mayor flexibilidad de modelar observaciones extremas, ubicadas generalmente en la cola derecha de la distribución de los datos, lo cual admite que algunos eventos aún tengan la probabilidad de ocurrir, lo que no sucede con los modelos tradicionales y el estimador de Kaplan-Meier, el cual estima para los tiempos más prolongados, probabilidades de supervivencia aproximadamente iguales a cero. Para mostrar la utilidad de la propuesta metodológica, se consideró una aplicación con datos reales que relaciona tiempos de supervivencia de pacientes con cáncer de colon.

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RESUMEN En el presente artículo se describe una metodología que permite tener un acercamiento a modelos probabilísticos alternativos para el análisis de supervivencia, con censura por la derecha, distintos a los que usualmente se estudian (distribución: exponencial, gamma, Weibull y log-normal), ya que es posible que los datos no se ajusten siempre con suficiente precisión por las distribuciones existentes. La metodología utilizada permite mayor flexibilidad de modelar observaciones extremas, ubicadas generalmente en la cola derecha de la distribución de los datos, lo cual admite que algunos eventos aún tengan la probabilidad de ocurrir, lo que no sucede con los modelos tradicionales y el estimador de Kaplan-Meier, el cual estima para los tiempos más prolongados, probabilidades de supervivencia aproximadamente iguales a cero. Para mostrar la utilidad de la propuesta metodológica, se consideró una aplicación con datos reales que relaciona tiempos de supervivencia de pacientes con cáncer de colon.

ABSTRACT This article describes a methodology that allows an approach to alternative right-censored probabilistic models for the analysis of survival, different to those usually studied (exponential, gamma, Weibull, and log-normal distribution) since it is possible that the data do not always fit with sufficient precision due to existing distributions. The methodology used allows for greater flexibility when modeling extreme observations, generally located in the right tail of data distribution, which admits that some events still have the probability of occurring, which is not the case with traditional models and the Kaplan-Meier estimator, which estimates for the longest times, survival probabilities approximately equal to zero. To show the usefulness of the methodological proposal, we considered an application with real data that relates survival times of patients with colon cancer (CC).

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A key biomarker in the study of differentiated thyroid cancer is thyroglobulin. Measurements of the levels of this protein in the blood are determined using laboratory instruments that cannot detect very small concentrations below a threshold, generating left-censored measurements. In the presence of censoring, ordinary least-squares regression models generate biased parameter estimates; therefore, it is necessary to resort to more complex models that consider the censored observations and the behavior of the distribution of the response variable, such as censored and mixed regression models. These techniques were used to model the relationship between thyroglobulin levels in individuals with differentiated thyroid cancer before and after treatment with radioactive iodine (I-131). Log-normal, log-skew-normal, log-power-normal, and log-generalized-gamma probability distributions were used to model the behavior of errors in the adjusted models. Log-generalized-gamma distribution yielded the best results according to the established model selection criteria.

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Resumen Evaluar los hábitos de salud relacionados con el sobrepeso y la obesidad infantil resulta fundamental para la prevención de estas problemáticas. Existe una amplia variedad de instrumentos para medir dichos hábitos, siendo más comunes y costo-eficientes los cuestionarios de autorreporte, sin embargo estos generan información demasiado extensa y difícil de analizar. Por tanto, este estudio tuvo como objetivo desarrollar una propuesta de síntesis de la información obtenida del Cuestionario de Hábitos de Salud relacionados con el Sobrepeso/Obesidad Infantil (CHS-SO), a partir de la construcción de indicadores de hábitos de alimentación, de actividad física y de consumo de entretenimiento digital que permitan clasificar a los niños como saludables o no saludables. Participaron 239 niños y niñas de 8 a 12 años de edad, quienes completaron el CHS-SO. La combinación del análisis de correspondencias múltiples con el de conglomerados arrojó dos clústers. Los hábitos de alimentación fueron saludables en la mayoría de los niños, sin embargo fueron identificadas diferencias en función del sexo y el nivel socioeconómico. Por el contrario, los dos hábitos menos saludables fueron el comer mientras se emplean dispositivos de entretenimiento digital y el tiempo destinado a estos últimos.

Abstract Assessing healthy habits related to child overweight and obesity is important concerning the prevention efforts. A variety of measures to assess eating habits and physical activity are available, being the self-report frequency questionnaires the most common and cost-efficient. Nevertheless, those questionnaires generate a large amount of data. Considering this, the purpose of the study was to develop a proposal to synthesize information from the Child Overweight/Obesity Healthy related Habits Questionnaire (CHS-SO), through the creation of indexes and a combination of a factorial method and cluster analysis. Nine indexes were created to assess eating habits, physical activity, and digital entertainment use, allowing to classify children into healthy or unhealthy in each index. The CHS-SO was administered to 239 children between 8 and 12 years old from Cali, Colombia. Data obtained from the indexes were analyzed using a multiple correspondence analysis and cluster analysis. Results show that most of the children have healthy eating habits, physical activity was lower in girls and digital entertainment use was high.