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BACKGROUND: Eating disorders (EDs) are associated with high morbidity and mortality, affecting predominantly young people and women. A delay in starting treatment is associated with chronic and more severe clinical courses; however, evidence on barriers and facilitators of access to care in Latin America is scarce. We aimed to identify barriers and facilitators of ED treatment in Chile from the perspective of patients, relatives, and health professionals. METHODS: Qualitative approach through semi-structured interviews with patients, their relatives, and health professionals. Participants were recruited from two ED centers in Santiago, Chile (one public and one private). Analysis was mainly based on Grounded Theory, using MAXQDA software. RESULTS: 40 interviews were conducted (n = 22 patients, 10 relatives, and 8 health professionals). The mean age of patients was 21.8 years, while the mean duration of untreated ED was 91.4 months (median 70 months). Five categories emerged with intersections between them: patient (P), family and social environment (FSE), health professionals (HP), healthcare system (HCS), and social and cultural context (SCC). Relevant barriers appeared within these categories and their intersections, highlighting a lack of professional knowledge or expertise, cultural ignorance or misinformation regarding EDs, and patient's ego-syntonic behaviors. The main facilitators were patients' and relatives' psychoeducation, recognition of symptoms by family members, and parents taking the initiative to seek treatment. CONCLUSIONS: This study provides information regarding access to treatment for patients living with EDs in Chile. A practical public health approach should consider the multi-causality of delay in treatment and promoting early interventions. Eating disorders (EDs) may severely affect the daily functioning of people enduring them. A delay in starting treatment is associated with a disease that is more difficult to treat. To our knowledge, there are no published studies carried out in Latin America exploring factors influencing treatment initiation in EDs patients. This study aimed to identify facilitators of and barriers to treating patients with EDs in Chile. We interviewed patients (n = 22), their relatives (n = 10), and health professionals (n = 8) from a private and a public center in Santiago, Chile. Our analysis showed that the main barriers to starting treatment were the lack of professional knowledge in ED, the monetary cost of illness, and cultural misinformation. Facilitators were related to the role of the family in recognizing and addressing the disease while being educated in EDs by professionals. This study helps to provide data about treatment access in developing countries. While facilitators and barriers were similar to others reported in the literature, the untreated ED's duration was longer. It is essential to address these barriers to provide access to treatment more efficiently and prevent severe and enduring forms of disease.

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Introduction: The COVID-19 pandemic has impacted the mental health of healthcare workers. Studying the care perspective is essential to understanding the causes of specific mental health findings and proposing strategies to address them. Methods: Cross-sectional study with a thematic analytical approach, derived from the international initiative "The Health Care Workers Study" (HEROES), conducted among healthcare workers in Chile during the second semester of 2022 and the first of 2023 through semi-structured interviews and inductive coding. Results: A narrative synthesis of 35 interviews in four themes: care at work: the presence of changes in work tasks, concern about becoming infected, collective "mystique", stigma due to being a healthcare worker, conflicts with patients; care at home: multiple ways of arranging household tasks, the relevance of living with others, interrelation with work dynamics, "double burden" among women; relationship with one's own mental health: recognition of mental health impact, the stress associated with change and uncertainty, perception of work overload, feelings of guilt or responsibility for infecting family members; and beliefs and values about the pandemic and its effects: acceptance of psychological impact on healthcare workers, organizational culture as a relevant element in postponing one's own mental health, initial disbelief in the effects of the pandemic, similarities with previous periods of social upheaval, and equality among people in terms of vulnerability to the disease. Conclusions: Five elements emerge as potential areas for intervention: gender perspective, previous exposure to crisis experiences, self-care spaces, peer support, and institutional response. The care perspective helps study the relationship between some stressors and healthcare workers' mental health in the context of a pandemic.

Introducción: La pandemia por COVID-19 ha impactado la salud mental de los trabajadores de salud. La perspectiva de cuidados se ha identificado como necesaria de estudiar, para entender causas atribuibles asociadas a hallazgos específicos en materia de salud mental y proponer cursos de acción para abordarla. Métodos: Estudio de carácter transversal con enfoque analítico temático, derivado de la iniciativa internacional (HEROES) Fue realizado entre trabajadores de salud en Chile, durante el segundo semestre de 2022 y el primero de 2023, a través entrevistas semiestructuradas y codificación inductiva. Resultados: Síntesis narrativa de 35 entrevistas, en cuatro temas: cuidados en el trabajo: presencia de cambios de funciones, preocupación por contagio, "mística" colectiva, estigma por condición de trabajador de la salud, conflictos con pacientes; cuidados en el hogar: diversas formas de arreglos de tareas domésticas, relevancia de la convivencia con otros, interrelación con dinámicas laborales, "doble carga" entre mujeres; relación con la propia salud mental: reconocimiento de afectación en salud mental, estrés asociado a cambio e incertidumbre, percepción de sobrecarga laboral, sentimientos de culpa o responsabilidad por contagio a familiares; y creencias y valores sobre la pandemia y sus efectos: aceptación de afectación psíquica de trabajadores de la salud, cultura organizacional como elemento relevante en postergación de propia salud mental, incredulidad inicial ante efectos de la pandemia, similitudes con periodos de conmoción social previos, igualdad entre personas respecto a vulnerabilidad frente a enfermedad. Conclusiones: Cinco elementos surgen como potenciales áreas de intervención: perspectiva de género, exposición previa a experiencias de crisis, espacios de autocuidado, apoyo de pares y respuesta institucional. La perspectiva de cuidados es útil para estudiar la relación entre algunos factores estresantes y la salud mental de los trabajadores de salud en el contexto de pandemia.

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BACKGROUND: Eating disorders (EDs) are disabling, potentially fatal, and costly mental disorders. According to recent data, Chile has the highest prevalence of both anorexia nervosa (AN) and bulimia nervosa (BN) in Latin America. However, there is no published data regarding the barriers experienced by patients with EDs in Chile until they start treatment. AIM: To review and synthesize the literature regarding barriers to access to treatment for patients with EDs. METHODS: A search was conducted through PubMed/ Medline, PsychInfo, Web of Science, Scopus, Embase, Scielo, and Google Scholar. Seventy-two studies were selected for full-text reading. RESULTS: 53 studies were included, all conducted in developed countries. A wide range of barriers was found, which can be classified according to their role. These barriers were predominantly at the level of the patient with an ED, the family and social environment, the health professionals, the sociocultural context, and the healthcare system. The barriers most commonly found in studies were the patient's ego-syntonic behaviors and the social stigma associated with EDs. DISCUSSION: The national context calls for discussing access problems in patients with EDs in Chile. The barriers found in this study should be considered when designing public policies, although the role of the cost of treatment should be more emphasized in Chile.

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Resumen Introducción: El trauma es una importante causa de mortalidad a nivel mundial y la cuarta causa de muerte en Colombia. Esta condición genera morbilidad y discapacidad, impactando sustancialmente sobre los años de vida potencialmente perdidos, sobre todo, en las edades más tempranas donde es más prevalente. Objetivo: Caracterizar epidemiológica y clínicamente pacientes con trauma abdominal penetrante manejados quirúrgicamente. Materiales y métodos: Estudio observacional de corte transversal y linealidad retrospectiva de pacientes con trauma abdominal penetrante, manejados quirúrgicamente en un hospital de alto nivel de complejidad entre 2016 y 2018, que incluye variables sociodemográficas y clínicas relacionadas con el trauma, el tipo de intervención quirúrgica y complicaciones asociadas. Resultados: Se identificaron 115 pacientes, el 94,8% de sexo masculino. El mecanismo de lesión predominante fue por arma corto-punzante con 67,8%. Se encontró consumo de drogas y sustancias embriagantes relacionado en el 43,7% de los casos. Los principales órganos lesionados fueron el intestino delgado 39.1%, pequeños vasos con 20% e hígado con 16.5%. Los tipos de reparo realizados más frecuentemente fueron la rafia de intestino delgado (22,6 %), y la anastomosis de intestino delgado (20,9%). El Penetrating Abdominal Trauma Index >25 mostró mayor hiperlactatemia (80%) y sepsis (50%). La mortalidad fue del 3.4%, asociado a reintervención y sepsis. Conclusión: La mortalidad por trauma abdominal penetrante en la costa del caribe colombiano es baja. 9 de cada 10 casos son hombres, casi la mitad de los casos se relaciona a consumo de sustancias psicoactivas y las principales complicaciones son la hiperlactatemia y sepsis.

Abstract Introduction: Trauma is an important cause of mortality worldwide and the fourth cause of death in Colombia. This condition generates morbidity and disability, having a substantial impact on the years of life potentially lost, especially in the younger ages where it is more prevalent. Objective: To characterize epidemiologically and clinically patients with penetrating abdominal trauma managed surgically. Materials and methods: Observational cross-sectional retrospective study of patients with penetrating abdominal trauma, surgically managed in a high complexity level hospital between 2016 and 2018, including sociodemographic and clinical variables related to trauma, type of surgical intervention and associated complications. Results: A total of 115 patients were identified, 94.8% of whom were male. The predominant mechanism of injury was a short stabbing weapon (67.8%). Drug and intoxicant use were found in 43.7% of the cases. The main organs injured were the small intestine (39.1%), small vessels (20%) and liver (16.5%). The most frequent types of repair performed were small bowel raffia (22.6%) and small bowel anastomosis (20.9%). The Penetrating Abdominal Trauma Index >25 showed higher hyperlactatemia (80%) and sepsis (50%). Mortality was 3.4%, associated with reoperation and sepsis. Conclusion: Mortality due to penetrating abdominal trauma in the Colombian Caribbean coast is low. Nine out of ten cases are men, almost half of the cases are related to the consumption of psychoactive substances and the main complications are hyperlactatemia and sepsis.

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RESUMEN Objetivo: Evaluar el riesgo de enfermedad cardiovascular a cinco y a diez años en pacientes con infección por VIH en terapia antirretroviral, por medio de las escalas Framingham y Data collection on Adverse Effects of Anti-HIV Drugs Study. Materiales y métodos: Estudio observacional de corte transversal y prospectivo. Se incluyeron pacientes con infección por el VIH en tratamiento antirretroviral de un centro de referencia para pacientes con VIH, entre el 1 de enero y el 30 de abril de 2019. Se realizó evaluación del riesgo cardiovascular a cinco y a diez años a través de los modelos de predicción de Framingham y la escala Data collection on Adverse Effects of Anti-HIV Drugs Study (DAD), y una comparación entre ellos a través de modelos estadísticos. Resultados: Se incluyeron 159 pacientes, con un promedio de edad de 48,90 años ± 9,90. La media de valoración del riesgo cardiovascular por escala de Framingham a 5 años fue de 2,70 % ± 2,80; Framingham a 10 años fue 6,10 % ± 5,70; DAD a 5 años, 3,50 % ± 4,10; DAD a 10 años, de 6,90 % ± 7,70; y el riesgo escala de Framingham a 10 años recalculado para Colombia (multiplicado por 0,75) fue de 4,50 ± 4,20. A través de un modelo de regresión logística, se determinó que la puntuación con mayor número de variables significativamente relacionadas con el resultado de riesgo cardiovascular alto es el modelo DAD a 10 años. Conclusiones: El estudio evidenció una diferencia significativa, con mayor riesgo estimado de enfermedad cardiovascular al utilizar el modelo DAD en comparación con el Framingham, tanto para la estimación a cinco años como a diez.

ABSTRACT Objective: To assess the five- and ten-year cardiovascular disease risk in HIV-positive patients on antiretroviral therapy, using the Framingham risk score and the Data collection on adverse effects of anti-HIV drugs (D:A:D) study. Materials and methods: An observational prospective cross-sectional study. HIV-positive patients on antiretroviral treatment from a referral center for HIV patients were included in the study between January 1 and April 30, 2019. A five- and ten-year cardiovascular risk assessment was performed using the Framingham risk score and the D:A:D study. Additionally, both risk models were compared through statistical models. Results: The study population consisted of 159 patients with a mean age of 48.90 years ± 9.90. The mean cardiovascular risk according to the five-year Framingham risk score was 2.70 % ± 2.80, the ten-year Framingham risk score was 6.10 % ± 5.70, the five-year D:A:D study was 3.50 % ± 4.10, the ten-year D:A:D study was 6.90 % ± 7.70, and the ten-year Framingham risk score recalculated for Colombia (multiplied by 0.75) was 4.50 % ± 4.20. Using a logistic regression model, it was determined that the ten-year D:A:D study provided the greatest number of variables significantly related to a high cardiovascular risk. Conclusions: The study showed a significant difference between the risk models. Both the five- and ten-year D:A:D study provided a better cardiovascular disease risk estimation than the five- and ten-year Framingham model.

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131I therapy is the treatment for patients with differentiated thyroid carcinoma (DTC) to ablate remnant thyroid tissue after surgery. The aim of this study was to estimate the absorbed doses to the blood and bone marrow of patients with DTC using gamma spectrometry. The evaluation of the absorbed dose in blood and bone marrow is a good indicator of a patient's response and its radiological protection. The average of low activities administered (AAAL) to ten patients was 3.20 GBq and the average of high activities administered (AAAH) to eight patients was 4.95 GBq. The blood and bone marrow doses were determined according to Lassmann et al 2008, performing successive measurements of activity in blood samples and whole body. Blood samples of 2 ml were taken during the first 48 h; the first one was extracted 2 h after the administration of the capsule and the following ones were taken every 12 h. The whole-body measurements were made at regular intervals of time throughout the patient's isolation period using a mobile gamma spectrometry system located inside the isolation room of the Dr Hernán Henríquez Aravena Hospital. The average residence times in blood and whole-body were (6.9 ± 1.7) × 10-4 h ml-1 and (23.2 ± 4.5) h, respectively. The average doses in blood and bone marrow of patients with AAAL were (0.33 ± 0.09) Gy and (0.63 ± 0.18) Gy, respectively, and with AAAH were (0.48 ± 0.06) Gy and (0.87 ± 0.19) Gy, respectively. In all studied patients, the bone marrow doses were less than 2 Gy. The results were compared with the previously published values, finding some differences between the residence times and significant differences in the doses, which show the need to compare the different methodologies.

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In this paper, a Least Mean Square (LMS) programming scheme is used to set the offset voltage of two operational amplifiers that were built using floating-gate transistors, enabling a 0.95 VRMS trimmer-less flame detection sensor. The programming scheme is capable of setting the offset voltage over a wide range of values by means of electron injection. The flame detection sensor consists of two programmable offset operational amplifiers; the first amplifier serves as a 26 µV offset voltage follower, whereas the second amplifier acts as a programmable trimmer-less voltage comparator. Both amplifiers form the proposed sensor, whose principle of functionality is based on the detection of the electrical changes produced by the flame ionization. The experimental results show that it is possible to measure the presence of a flame accurately after programming the amplifiers with a maximum of 35 LMS-algorithm iterations. Current commercial flame detectors are mainly used in absorption refrigerators and large industrial gas heaters, where a high voltage AC source and several mechanical trimmings are used in order to accurately measure the presence of the flame.

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Bovine tuberculosis (bTB) is a major economic problem in animal husbandry and is a public health risk in nonindustrialized countries. It is generally accepted that protection against TB is generated through cell-mediated immunity. Previous investigations have shown that WC1(+) γδ, CD4(+) and CD8(+) T-cell subpopulations are important in the immune response to bTB. It is known that changes in the immune balance from a dominant T helper 1 (Th1)-type response toward a more prominent Th2 response may be observed during disease progression. In this study, we aimed to investigate immune peripheral blood cells in tuberculin reactor cattle that are seropositive or seronegative for Mycobacterium bovis antigens, using flow cytometry and hematological analysis. The evaluation of the T cell subpopulations revealed a decrease in CD8(+) T cells of the seropositive and seronegative animals compared with the control animals (p=0.0001). Moreover, the seropositive group exhibited a lower percentage of CD8(+) T cells than the seronegative group. The percentage of B cells was significantly increased in the seropositive group compared with the seronegative group and the control group (p=0.0009). No difference was observed in the percentage of WC1(+) γδ and CD4(+) T cells among the groups. Furthermore, following 24h of peripheral blood culture with bovine purified protein derivative (PPD), both apparently infected groups showed an increase in the levels of cellular activation compared with the control group (p<0.0001). The seropositive group displayed a higher level of cellular activation than the seronegative group. In both apparently infected groups, the hematological analysis showed an increase in total leukocyte (p=0.0012), lymphocyte (p=0.0057), monocyte (p=0.0010) and neutrophil (p=0.0320) counts in comparison with the healthy animals. Our results demonstrated differences in immune peripheral blood cells of tuberculin reactor cattle that are seropositive or seronegative for M. bovis antigens, probably due to different stages of bTB among the groups. The percentages of CD8(+) T cells, B cells and the T cell activation levels may represent biomarkers for the progression of the disease. However, general characteristics shared by both apparently infected groups as lymphocytosis and monocytosis may also be indicative of the disease. Further experiments are required to understand the variations between cellular and humoral immunities throughout the course of bTB infection. A detailed knowledge of the peripheral blood cells involved in all stages of the bTB immune response of naturally infected cattle is essential for the optimal exploitation of diagnosis and vaccination models.

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Objetivo: describir los resultados de la aplicación de los colgajos musculares en el tratamiento de las enfermedades pleuropulmonares infecciosas complicadas. Materiales y métodos: de agosto 1 del 2002 a julio 31 del 2003, 70 pacientes han requerido tratamiento quirúrgico para el manejo de enfermedades pleuropulmonares infecciosas complicadas en el Hospital Santa Clara, Bogotá, D.C. Durante su evolución, 10 pacientes han requerido rotación intratorácica de colgajos musculares y han sido seguidos prospectivamente. Resultados: la muestra está compuesta de ocho pacientes hombres y dos mujeres; edad media de 57 años (35 a 79 años). Dos pacientes fueron intervenidos previamente en otra institución y llegaron con una Ventana de Eloesser sobreinfectada. En nueve de 10 pacientes había presencia de pus en la cavidad torácica al momento de rotar el colgajo. La indicación para el colgajo muscular terapéutico fue cierre de fístulas broncopleurales en cuatro pacientes, cierre fístula parenquimatosas pulmonares múltiples y manejo del espacio pleural infectado en dos pacientes y cierre de fístula esofágica en un paciente. En tres pacientes se realizó cubrimiento del muñón bronquial profiláctico. El serrato fue rotado en cinco pacientes, el serrato con la mitad superior del dorsal en tres, y el serrato con dorsal y el octavo intercostal en un paciente respectivamente; y se requirieron ocho procedimientos promedios para el control de la infección (rango 1 a 22 procedimientos por paciente). El tiempo de hospitalización medio fue 25 días (14 a 60), todos los pacientes requirieron ventilación mecánica en el postoperatorio. La mortalidad fue del 20/100 (2 de 10 pacientes). Al seguimiento dos pacientes han fallecido, uno de ellos con el tórax abierto sin control de la infección. Seis pacientes (60/100) han evolucionado satisfactoriamente, sin evidencia de fístula o infección al seguimiento. Conclusión: los colgajos musculares son un método efectivo en el manejo de enfermedades...

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