Frecuencia de calcificación del complejo estilohioideo en radiografías panorámicas digitales de un centro radiológico, Lima 2020-2021 / Stylohyoid complex calcification frequency in digital panoramic radiographs of a radiology center, Lima 2020-2021https://doi.org/10.15381/os.v26i2.25050Odontol. Sanmarquina 2023; 26(2): e25050

Objetivo: Determinar la frecuencia de calcificación del complejo estilohioideo en radio-grafías panorámicas digitales de un centro radiológico. Métodos. El tipo de estudio fue cualitativo, diseño descriptivo, transversal y retrospectivo; se estudiaron 400 radiografías panorámicas digitales entre edades de 25 a 70 años. Se realizó una evaluación visual de las radiografías panorámicas digitales donde se observó el tipo y patrón de calcificación del ligamento estilohioideo. Resultados. El 56,8% presentó calcificación del complejo estilohioideo en radiografías panorámicas digitales; según sexo en el grupo femenino se presentó en un 64,6%; respecto al grupo etario el 65.8% presentó calcificación en adultos de 30 a 59 años; según el lado afectado el 71,4% fue bilateral, según la apariencia radiográfica el tipo I presentó una mayor frecuencia con un 50,1% en el lado derecho y el 62,5% en el lado izquierdo; finalmente el patrón de calcificación más frecuente fue el completamente calcificado con un 23,8% en el lado derecho y un 48,5% en el lado izquierdo. Conclusión. La frecuencia de calcificación del complejo estilohioideo en ra-diografías panorámicas digitales en la muestra estudiada fue alta por lo que es importante el uso de la radiografía panorámica como medio de diagnóstico para poder detectar este tipo de hallazgos que junto a una evaluación clínica nos permitan hacer un correcto diagnóstico en fin de un tratamiento adecuado.

Objective: To determine the frequency of the stylohyoid complex calcification in digital panoramic radiographs of a radiological center. Methods.The type of study was quali-tative, descriptive, cross-sectional and retrospective design; 400 digital panoramic radio-graphs between the ages of 25 and 70 were analyzed. A visual evaluation of the digital panoramic radiographs was performed to assess the type and pattern of the stylohyoid ligament calcification. Results. The 56.8% presented calcification of the stylohyoid com-plex in digital panoramic radiographs; according to sex in the female group it was present in 64.6%; Regarding the age group, 65.8% presented calcification in adults aged 30-59 years-old; According to the affected side, 71.4% were bilateral, according to the radio-graphic appearance, type I presented a higher frequency with 50.1% on the right side and 62.5% on the left side. Finally, the most frequent calcification was the completely calcified pattern, with 23.8% on the right side and 48.5% on the left side. Conclusion.The frequency of calcification of the stylohyoid complex in digital panoramic radio-graphs in the sample studied was high, so it is important to use panoramic radiography as a means of diagnosis to be able to detect this type of findings that, together with a clinical evaluation, allow us to make a correct diagnosis and perform an adequate treatment.

Eficacia de la cirugía bariátrica-metabólica en pacientes con obesidad y diabetes mellitus tipo 2 / Efficacy of bariatric-metabolic surgery in patients with obesity and type 2 diabetes mellitus

La prevalencia de la diabetes mellitus tipo 2 está incrementando rápidamente a nivel mundial de manera paralela a la epidemia de obesidad. El número de personas con diabetes, alrededor del mundo, se ha duplicado en los últimos 20 años; una de las características más preocupantes de este rápido crecimiento es el aparecimiento de diabetes tipo 2 en niños, adolescentes y adultos jóvenes. Debido a la reducción de la esperanza de vida causada por las morbilidades producidas por la diabetes, los pacientes que sufren de esta patología requieren un manejo integral. La cirugía bariátrica / metabólica ha demostrado que: • Mejora significativamente el control glucémico. • Reduce los factores de riesgo cardiovasculares. • Incluso ha demostrado la posibilidad de producir remisión de la diabetes tipo 2, hipertensión arterial y otras comorbilidades asociadas con la obesidad. Los resultados de múltiples estudios demuestran claramente la eficacia de la cirugía metabólica en el control glucémico y de otras comorbilidades asociadas con la diabetes tipo 2 y la obesidad; se observa, con mucha frecuencia, casos de remisión de la diabetes, incluso hasta 5 años después de la intervención quirúrgica. Por esta razón, la Asociación Americana para la Diabetes (ADA) considera a la cirugía bariátrica como una opción terapéutica viable en pacientes obesos con diabetes mellitus tipo 2.Las cirugías gastrointestinales diseñadas para controlar la obesidad pueden mejorar la homeostasis de la glucosa más efectivamente que el tratamiento farmacológico-clínico y producir cambios importantes en el estilo de vida; incluso, en un considerable número de pacientes, se logra la remisión de la diabetes tipo 2. (AU)

The prevalence of type 2 diabetes mellitus is rapidly increasing to global level parallel to the epidemic that obesity. The number of people with diabetes, around the world, have doubled in the last 20 years; one of the most worrisome features of this rapid growth It is the appearance of type 2 diabetes in children, adolescents and young adults. Due to the reduction in life expectancy caused by morbidities produced by diabetes, patients suffering from this pathology require comprehensive management bariatric / metabolic surgery has shown that: • Significantly improves glycemic control. • Reduces cardiovascular risk factors. • It has even demonstrated the possibility of producing diabetes remission type 2, arterial hypertension and other comorbidities associated with obesity. The results of multiple studies clearly demonstrate the effectiveness of the metabolic surgery in glycemic control and other associated comorbidities with type 2 diabetes and obesity; cases are very often observed of remission of diabetes, even up to 5 years after the intervention surgical For this reason, the American Diabetes Association (ADA) considers bariatric surgery as a viable therapeutic option in obese patients with type 2 diabetes mellitus. Gastrointestinal surgeries designed to control obesity can improve glucose homeostasis more effectively than treatment clinical pharmacological and produce important changes in lifestyle; even, in a considerable number of patients, remission of the type 2 diabetes. (AU)

Hormona de crecimiento en sangre de papel filtro para el diagnóstico de deficiencia de hormona de crecimiento / Growth hormone of dried blood spot for the diagnosis of growth hormone deficiency

INTRODUCCIÓN: El diagnóstico de deficiencia de hormona de crecimiento (DHC) es difícil de establecer, y se puede asociar a serias complicaciones, especialmente en el período neonatal. La prueba de estímulo de secreción de hormona de crecimiento (HC) se considera de elección para el diagnóstico, pero presenta complicaciones metodológicas y se asocia a efectos adversos. Los neonatos presentan aumento de la secreción de HC de forma fisiológica, siendo una ventana diagnóstica. OBJETIVO: Evaluar si la muestra de sangre en papel filtro tomada en el período neonatal, en contexto del tamizaje neonatal de hipotiroidismo congénito y fenilcetonuria, permite diferenciar pacientes con DHC, de los que no la presentan. PACIENTES Y MÉTODO: Estudio de casos y controles mediante determinación de concentración de HC en sangre de papel filtro extraída en período neonatal, comparando controles con DHC con casos con deficiencia descartada. Se realizó extracción de la muestra del papel filtro, obteniendo dos discos de 0,125 pulgada por cada uno de los pacientes desde el centro de la mancha de sangre del papel, para un ELISA de HC humana altamente sensible basado en el uso de anticuerpos policlonales dirigidos contra la HC humana recombinante de 22kDa de peso molecular. RESULTADOS: Se obtuvo un total de 7 casos de DHC y 10 controles. La mediana de concentración de HC de papel filtro en los casos es 2,0 ng/ml (Rango intercuartil 3,6 ng/ml) y controles 2,05 ng/mL (RIC 2,0 ng/ml), U de Mann-Withney 30,5 (p = 0,68). Los dos casos con deficiencia de hormonas hipofisarias múltiples (DHHM) presentan concentraciones menores a 1 ng/ml. CONCLUSIÓN: La muestra de papel filtro no permitió diferenciar a los pacientes con DHC de los casos controles, aunque los casos con DHHM presentaron concentraciones mucho menores, en comparación a la deficiencia de hormona de crecimiento aislada (DHCA).

INTRODUCTION: The diagnosis of growth hormone deficiency (GHD) is difficult to determine, and could be associated with severe complications, especially in the neonatal period. The stimulation test of growth hormone (GH) secretion is considered the gold standard for diagnosis, but it has methodological complications and is associated with adverse effects. Neonates present physiological increased secretion of GH, representing a diagnostic window. OBJECTIVE: To evaluate if the dried blood spot on filter paper obtained in the neonatal period, as part of a neonatal screening for con genital hypothyroidism and phenylketonuria, allows differentiating patients with GHD from those who do not have it. PATIENTS AND METHOD: Study of cases and controls by measuring the GH concen tration in dried blood spot on filter paper obtained in the neonatal period, comparing controls with GHD with cases with discarded deficiency. The sample was extracted from the filter paper, obtaining two 0.125 inch discs per each patient from the center of the blood spot on the paper, for a highly sen sitive ELISA assay for human GH based on the use of polyclonal antibodies against 22 kDa recom binant human GH. RESULTS: Seven cases of GHD and ten controls were obtained. The median GH concentration of the dried blood spot in the cases is 2.0 ng/ml (Interquartile range 3.6 ng/ml) and 2.05 ng/ml (Interquartile range 2.0 ng/ml) in the controls, Mann-Whitney U test 30.5 (p = 0.68). The two cases with multiple pituitary-hormone deficiency (MPHD) present concentrations lower than 1 ng/ml. CONCLUSION: The dried blood spot sample did not differentiate GHD patients from control cases, although MPHD cases present much lower concentrations compared to isolated growth hor mone deficiency (IGHD).

Ovarian follicular dynamic and plasma progesterone concentration in Alpine goats on the breeding season / Dinâmica folicular ovariana e concentração plasmática de progesterona em cabras Alpinas durante a estação reprodutiva

Os objetivos deste estudo foram relatar a dinâmica folicular ovariana e a concentração plasmática de progesterona durante ciclos estrais de duração irregular em cabras da raça Alpina. Vinte e nove cabras tiveram sua atividade ovariana monitorada diariamente por ultrassonografia transretal durante um, dois ou três períodos interovulatórios consecutivos. Amostras de sangue foram coletadas para análise da concentração plasmática de progesterona. Dos 47 ciclos avaliados, 28 (59,57%) foram de duração normal (17 a 25 dias), sete (14,89%) de curta duração (<17 dias) e 12 (25,53%) de longa duração (>25 dias). Os ciclos estrais de curta duração tiveram 6,14±0,69 dias e uma onda folicular que emergiu no dia 0,43±1,13. Os ciclos estrais de longa duração tiveram entre 26 e 79 dias, com duas a nove ondas foliculares. Os ciclos estrais de curta duração ocorreram durante a estação reprodutiva e foram associados à regressão prematura do corpo lúteo (CL). Os ciclos estrais de longa duração ocorreram na transição entre o anestro e a estação reprodutiva e foram associados principalmente à persistência do CL ou à fase folicular prolongada.(AU)

Telemonitorización del soporte ventilatorio domiciliario / Telemonitoring of domiciliary ventilatory support

More than 1,000 patients have been admitted to the pediatric ventilatory assistance program of the Chilean Ministry of Health. There are two subprograms depending on the complexity of patients. Since 2006 we have had the non-invasive home ventilatory assistance program (AVNI in Spanish) and the home invasive ventilatory assistance program (AVI in Spanish), derived from the AVNI program in 2008. Both provide coverage for patients under the age of 20, which complements the health network by delivering technology, home visits by professionals and respiratory supplies to ensure an adequate stay at the patients' homes with their families. It is in this context that remote telemonitoring emerges as an alternative to monitor the ventilatory therapy of these patients at home, which consists of remotely monitoring all ventilatory therapy; at present, there exist different tools to achieve this goal. The objective of this review is to describe the main telemonitoring systems available in Chile and their usefulness to check respiratory therapy in patients requiring home ventilatory support. As healthcare technology advances, the survival rate of patients requiring chronic ventilatory support increases; this situation, together with the high costs of hospital management for the health system and families, has brought about, in the last few years, the creation of home ventilatory support programs in Chile's public health system. In this context, telemonitoring emerges as a tool to optimize monitoring and timely adjustment of ventilatory parameters in patients receiving ventilatory support at home. It also seeks to reduce costs and increase safety

Actualmente han ingresado al programa de asistencia ventilatoria pediátrico del Ministerio de Salud de Chile más de 1000 pacientes. Existen dos sub programas dependiendo de la complejidad de los pacientes, es así como tenemos al programa de asistencia ventilatoria no invasiva domiciliaria (AVNI), que surgió durante el año 2006, y el programa de asistencia ventilatoria invasiva domiciliaria (AVI) que nace derivado del programa AVNI a partir del año 2008. Ambos entregan cobertura a pacientes menores de 20 años, complementando a la red de salud entregando la tecnología, visitas de profesionales en domicilio y una canasta de insumos respiratorios que aseguren una adecuada estancia en domicilio de los pacientes, junto a sus familias. Es en este contexto la telemonitorización a distancia surge como una alternativa para el seguimiento de la terapia ventilatoria de éstos pacientes en domicilio, la cual consiste en la monitorización en forma remota de toda la terapia ventilatoria , existiendo diferentes herramientas en la actualidad para llevala a cabo. El objetivo de esta revisión es describir los principales sistemas de telemonitorización disponibles en Chile, y su utilidad en la monitorización a distancia la terapia respiratoria de los pacientes que requieren soporte ventilatorio domiciliario. El avance de la tecnología sanitaría ha impactado en una mayor sobrevida de pacientes que requieren soporte ventilatorio crónico, el manejo hospitalario de estos pacientes tiene elevados costos para el sistema sanitario y las familias. En respuesta a esto durante los últimos años se han creado en el sistema público de salud de Chile programas de soporte ventilatorio domiciliario. En este contexto la telemonitorización surge como una herramienta que permite optimizar el seguimiento y el ajuste oportuno de los parámetros ventilatorios en los pacientes que reciben soporte ventiltorio domiciliario. Además busca disminuir los costos y aumentar la seguridad

Diabetes Gestacional: asociación con grupo ABO / Association of abo blood groups with gestational diabetes mellitus

Background: ABO and Rhesus blood systems are associated with type 2 Diabetes Mellitus (DM2). Gestational Diabetes (GDM) is a model to study DM. Aim: To study the association between GDM and ABO and Rhesus groups. Material and Methods: A retrospective cohort study was performed in 1,078 women who gave birth to a singleton in Talca Regional Hospital, Chile, during 2008. We analyzed personal, obstetric, medical data and ABO and Rh blood groups. Results: GDM was diagnosed in 6.6% of women. Age and body mass index were significantly associated with GDM. There were no differences in Rh blood groups (p = 0.604), while ABO groups were different between GDM and controls. B antigen was present in 3% of GDM women and in 10.8% of controls (p = 0.037), with an odds ratio of 0.25 after adjusting for other associated risk factors (p = 0.06). Conclusions: ABO group is suggested as a possible protector marker for GDM.

Influência da condição corporal ao parto no balanço energético e desempenho reprodutivo de cabras leiteiras no pós-parto / Influence of body condition at calving on energy balance and reproductive performance of dairy goats in the postpartum

O estudo teve como objetivo avaliar a influência da condição corporal (CC) ao parto no balanço energético (BE) e o desempenho reprodutivo de cabras Alpinas no pós-parto. Foram utilizadas 68 cabras distribuídas em três grupos (G), sendo: G1- cabras com baixa CC (CC entre 1,5 e 2,5); G2: cabras com moderada CC (entre 2,75 e 3,5) e G3: cabras com alta CC (entre 3,75 e 5,0). Os animais receberam dieta (silagem de milho e concentrado, com 18% de proteína bruta e 1,7Mcal/kg de matéria seca de energia líquida) ad libitum. As avaliações foram feitas nas oito primeiras semanas de lactação, para determinação do BE, do intervalo do parto à primeira ovulação e ao primeiro estro e da concentração plasmática de progesterona. Os dados foram analisados por análise de variância a 5% de probabilidade. Não houve efeito da CC ao parto sobre o BE dos animais. Todas as cabras apresentaram BE negativo ao parto, com mudança para BE positivo aos 51, 58 e 64 dias pós-parto, respectivamente. Não houve diferença na concentração plasmática de progesterona nos três grupos, sendo caracterizada função luteal (concentração ≥1ng/dL) em apenas 5,9% dos animais avaliados. O intervalo do parto à primeira ovulação foi de 46 dias. Apenas 4,4% das cabras exibiram estro. Cabras leiteiras de média produção, entre 2,5 e 3,0kg de leite/dia, entram em BE negativo ao parto, independentemente da CC apresentada, influenciando negativamente o reinício da atividade ovariana no pós-parto.(AU)

The concentration of progesterone in the blood was used to study the effect of body condition score (BCS) on the post-partum ovarian activity of dairy goats. Sixty-eight female goats were distributed between three treatments. Treatment 1: goats with BCS between 1.00 and 2.75; Treatment 2: goats with BCS between 2.75 and 3.50; and Treatment 3: goats with BCS between 3.50 and 5.00. The goats had the blood collected immediately after birth, and from that time up to the eighth week post-partum at three day intervals. The progesterone analysis on the blood was used to determine the interval between the birth and the first ovulation. The females were teasing two times per day for estrus detection and determination of the time interval from birth to first estrus. No significant difference was found on the progesterone concentration between treatments. The luteal functionality was characterized in only 5.9% of goats, with a concentration higher than 1ng/mL. The period from birth to first ovulation was 46 days. The detectable estrus was found in only 4.4% of goats. The BCS at birth did not influence the recovery of ovarian activity of dairy goats.(AU)

Determinación del índice facial total y cono facial en individuos chilenos / Total facial index and facial cone in Chilean individuals

El estudio fue realizado en 68 estudiantes, adultos, Chilenos, de ambos sexos, con edades entre 17 y 32 años, oriundos de la Región de la Araucanía, Chile. En cada uno se registraron el diámetro vertical (Nasion-Gnation, Na-Gn) y diámetros transversales (bigoníaco y bicigomático, Go-Go y Cig-Cig, respectivamente) y se calculó el índice facial total (IFT). Para la obtención del cono facial se compararon los anchos Go-Go y Cig-Cig. Se analizó la relación entre: IFT v/s cono facial; IFT v/s sexo; cono facial v/s sexo. Para el análisis estadístico se utilizó las pruebas de chi-cuadrado, Pearson y coeficiente de correlación de Spearman, considerándose significativo p<0,05. La altura de la cara (Na-Gn) fue de 117,5 mm en hombres y de 110,3 mm en mujeres; el ancho superior de la cara (Cig-Cig) fue de 126,9 mm en los hombres y de 124,4 mm en las mujeres. La altura facial es diferente para hombres y mujeres, siendo mayor en hombres. El IFT fue calculado a partir de las medidas registradas y se obtuvo lo siguiente: en hombres hubo 4 casos (5,9 %) euriprosopos, 4 (5,9 %) mesoprosopos y 17 (25 %) leptoprosopos; en mujeres hubo 12 casos (17,6 %) euriprosopos, 12 (17,6 %) mesoprosopos y 19 (27,9 %) leptoprosopos. Concluimos que en individuos adultos chilenos la altura facial es diferente para hombres y mujeres, siendo mayor en hombres. El tipo leptoprosopo y la cara de forma triangular son más frecuentes en hombres. Los datos obtenidos son un aporte al conocimiento antropológico de un grupo de individuos del Sur de Chile.

The study was conducted on 68 students, Chilean adults, of both sexes, between 17 and 32 years old, originally from the Region de la Araucanía, Chile. The vertical diameter (Nasion-Gnation, Na-Gn) and transverse diameter (bigoníac and bizygomatic; Go-Go and Zig-Zig, respectively) were recorded and total facial index (TFI) was calculated. To obtain the facial cone widths Go-Go and Zig-Zig were compared. We analyzed the relationship between: TFI v/s facial cone; TFI v/s sex; facial cone v/s sex. For statistical analysis the chi-square test, Pearson and Spearman correlation coefficient was used, considering significant p <0.05. The face height (Na-Gn) was 117.5 mm in men and 110.3 mm in women; the width of the upper face (Zg-Zg) was 126.9 mm in men and 124.4 mm in women. The facial height is different for men and women, being higher in men. The TFI was calculated from the measurements recorded and the following is obtained: in men there were 4 cases (5.9 %) euriprosopic, 4 (5.9 % ) mesoprosopic and 17 (25 %) leptoprosopic; in women there were 12 cases (17.6 %) euriprosopic, 12 (17.6 %) mesoprosopic and 19 (27.9%) leptoprosopic. We hereby conclude that in Chilean adults the facial height is different for men and women, being higher in men. The leptoprosopic type and triangular face is more common for men. The data obtained is a contribution to anthropological knowledge of a group of individuals in the South of Chile.

Actividad comparativa in vitro de doripenem y otros carbapenemicos frente a pseudomonas aeruginosa aisladas en el laboratorio de microbiología del hospital Vargas de Caracas / Comparative in vitro activity of dorypenem and other carbapenems in pseudomonas aeruginosa isolates on Vargas Caracas Hospital´s Microbiology

Los ensayos de cuantificación de ARN plasmáticos de VIH-1 son importantes para el control de pacientes infectados, así como el monitoreo de la respuesta a la terapia antirretroviral. Por lo tanto, los ensayos comerciales empleados para este propósito deben presentar buena correlación entre si, para dar lugar al manejo terapéutico apropiado. El objetivo del estudio consistió en correlacionar los resultados obtenidos mediante el ensayo de amplificación de señal (bDNA) y PCR en tiempo real (RT-PCR), ambas casas comerciales aprobadas por la FDA y con diferente diana de detección del VIH-1. La validación se realizó con 180 muestras clínicas de pacientes referidos al INHRR. Los resultados fueron comparados con la subpoblación de linfocitos TCD4+ determinados mediante citometría de flujo. El análisis estadístico se realizó empleando el coeficiente de regresión lineal de Pearson (R2) y el valor de contraste de hipótesis con una significancia del 95 %, usando el programa SPSS Statistics v10.0. Se observó una buena correlación entre los ensayos (R2=0.961, p<0.05), siendo la RTPCR más sensible. Las diferencias cuantitativas de carga viral entre las técnicas ensayadas fue menor de 0.5 log10 copias/ml para el 89% de las muestras, y >1 log10 copias/ml solo en dos pacientes, no indicando necesariamente cambio terapéutico. Adicionalmente, se encontró una correlación inversa entre los linfocitos TCD4+ y carga viral del VIH-1 medida por bDNA (R2= 0.20, p<0.05) y RT-PCR (R2= 0.15, p<0.05). Los ensayos evaluados mostraron que ambas técnicas puedes ser empleadas indistintamente para el control de los pacientes VIH positivo.

The assay for quantification of plasma HIV-1 RNA are important for the control of patients infected, as well as the monitoring of the response to antiretroviral therapy. Therefore, the commercial assays used for this purpose must submit good correlation between to give place to the appropriate therapeutic management. In this study, we correlate the results obtained through the testing of signal amplification (bDNA) and real-time PCR (RT-PCR), two comercial technical approved by the FDA and with different targets of detection HIV-1. The validation was carried out with 180 clinical samples of patients referred to the INHRR. The results were compared with the subpopulation of lymphocytes TCD4+ determined by flow cytometry. The statistical analysis was performed using the program SPSS Statistics v10. It was observed good correlation between the tests studied (R2=0.961, p<0.05), with RT-PCR more sensitive. The quantitative differences in viral load between the techniques tested was less than 0.5 log10 copies/ml for the 89% of the samples, and >1 log10 copies/ml in only two patients. Additionally, it was found an inverse correlation between lymphocytes TCD4+ and viral load of HIV-1, measured by bDNA (R2= 0.20, p<0.05) and RT-PCR (R2= 0.15, p<0.05). Therefore, these assays can be employed for the patient control HIV.

EPIDEMIOLOGÍA DE LA URTICARIA AGUDA EN UN SISTEMA DE SALUD PREPAGO DE LA CIUDAD DE BUENOS AIRES, ARGENTINA / Epidemiology of acute urticaria in a health maintenance organization of Buenos Aires, Argentina

Antecedentes. A pesar de la frecuencia de la urticaria aguda (UA), no existen estudios epidemiológicos sobre su prevalencia y distribución en Argentina. Objetivo. Determinar la prevalencia y otras características epidemiológicas de la UA en los miembros de una organización privada de salud de Buenos Aires, la mayor área poblada de Argentina. Marco de referencia: Hospital Italiano (HIBA) de la Ciudad de Buenos Aires, Argentina. Diseño: Cohorte retrospectivo. Población. Pacientes con diagnóstico de UA miembros del HIBA, y con al menos 12 meses de seguimiento. Métodos. Se analizaron todos los registros médicos para calcular las tasas de prevalencia de UA por 100.000 habitantes con intervalo de confianza del 95% (IC95%) para el período comprendido entre el 1 de enero de 2013 y el 31 de diciembre de 2014. La tasa de prevalencia se calculó para toda la población y luego se discrimino para pacientes adultos y pediátricos (menores de 18 años en el momento del diagnóstico). Resultados. Se analizaron 158.926 miembros de la prepaga. Se identificó un total de 2100 casos de UA en el período analizado (1151 en pediatría, 949 en adultos), con una tasa de prevalencia de 1,32% (IC95%: 1,11-1,55%). La prevalencia de UA en la población adulta fue de 0,83% (IC95%: 0,64-0,97%), mientras que en la población pediátrica fue del 2,5% (IC95%: 1,9-2,8%). Conclusiones: este es el primer estudio que describe la prevalencia de UA en una población cerrada de Argentina y de la región.(AU)

Background. In spite of the frequency of acute urticaria (AU), there are no epidemiological studies on its prevalence and distribution in Argentina. Objetive. Was to estimate the prevalence and other epidemiological characteristics of AU in the members of a health maintenance organization of Buenos Aires, the largest populated area in Argentina. Setting: Italian Hospital, Buenos Aires, Argentina. Design. Retrospective cohort. Population. All patients with diagnosis of AU who are members of the IHMCP, and with at least 12 months of follow up were included in the study. Methods. All medical records were analyzed to calculate the prevalence rates for AU per 100,000 population with 95% CI for the period of January 1, 2013 and December 31, 2014. Prevalence rate was calculated for the entire population and then discriminated for adults and pediatric members (less than 18 years old at diagnosis). Results. 158,926 members were analyzed. A total of 2100 cases of AU were identified on prevalence period (1151 in pediatrics, 949 in adults), yielding a prevalence rate of 1.32% (CI 95% 1.11-1.55%). The prevalence of AU in adult population observed was 0.83 % (95% CI 0.64-0.97%), while in pediatrics it was 2.5 % (95% CI 1.9-2.8%). Conclusions. This is the first study to describe the prevalence of AU in a closed population of Argentina and the region(AU)

Influência do Hormônio do Crescimento na concentração de testosterona plasmática e nas características seminais de touros jovens e adultos da raça Nelore / Influence of Growth Hormone on plasma testosterone concentration and seminal characteristics of young and adult Nellore bulls

Estudou-se o efeito do Hormônio do Crescimento bovino (bGH) sobre os parâmetros seminais e a concentração sérica de testosterona de touros da raça Nelore. Dezesseis touros foram distribuídos em um delineamento fatorial 2 x 2 (duas idades e dois níveis de r-bST), com quatro animais em cada tratamento. As aplicações de r-bST foram realizadas a cada 14 dias, totalizando nove aplicações por animal, em um período experimental de 120 dias. As coletas de sêmen foram realizadas a cada 15 dias e, para determinar as concentrações de testosterona, foram realizadas coletas de sangue a cada quatro horas, num total de 24 horas, e a cada 30 dias a partir da primeira aplicação de r-bST. O sêmen dos touros adultos tratados com r-bST apresentaram maior motilidade e vigor (P<0,05) em relação aos animais controles (79,70±11,56% vs 64,06±23,65%) e (3,80±0,88 vs 2,92±1,25), respectivamente; entretanto, as demais características seminais não foram influenciadas (P>0,05) pelo tratamento com r-bST. Os aspectos físicos do sêmen dos touros jovens não foram afetados (P>0,05) pelo tratamento com r-bST. Entretanto o tratamento com r-bST diminuiu os defeitos morfológicos menores (delgado, gigante normal, pequeno normal, globoso, cabeça isolada normal, abaxial, cauda dobrada e enrolada levemente e gota distal) em relação aos jovens não tratados (P<0,05). As concentrações séricas de testosterona foram influenciadas (P<0,05) pelo tratamento, aos 120 dias após a primeira aplicação do r-bST, e apresentaram tendência de três picos no período de 24 horas.

The aim of this trial was to study the effect of Growth Hormone (GH) on the seminal parameters and testosterone profile from Nellore bulls. Sixteen bulls were allocated in a 2 x 2 factorial arrangement (two ages and two r-bST levels), with four animals per treatment. The r-bST was injected every 14 days, with a total of nine injections per animal, during the 120 days of the experimental period. The semen collections were done every 15 days and blood samples were collected in four hour intervals for 24 hours, and in 30 day intervals from the first r-bST injection for testosterone profile. The semen of adult bulls treated with r-bST showed greater MOT and VIG (P<0.05) in relation to the control (79.70±11.56% vs 64.06±23.65%) and (3.80±0.88 vs 2.92±1.25) respectively; however, the other evaluated seminal parameters were not affected (P>0.05) by the r-bST treatment. The physical measurements of the semen of young animals was also unaffected (P>0.05) by r-bST injection. However, the treatment with r-bST decreased the number of minor morphologic defects (narrow head, giant head, small normal head, round head, free normal head, abaxial implantation, simple bent tail and distal droplet) compared to untreated young bulls (P<0.05). The serum testosterone concentration was influenced (P<0.05) by treatment, at 120 days after the first injection of r-bST and they showed a tendency of three picks in a 24 hour period of sampling.

Magnitudes y unidades para dosimetría a pacientes en radiodiagnóstico e intervencionismo / Quantities and units for patient dosimetry in diagnostic and interventional radiology

Because diagnostic and interventional radiology procedures represent one of the main sources of irradiation by ionizing radiation in the population, it has become a priority to become familiar with the quantities and units that account for patient dosimetry. There are countless documents and international recommendations on names, concepts, definitions and areas of application for various quantities and units used in patient dosimetry, in interventional and diagnostic radiology procedures. However, national legislation is not updated in this regard and does not provide, in any of its documents, an updated glossary that enables finding this type of information quickly and precisely. Therefore, this review paper presents in a didactic way and in plain language, the main quantities and units to be used in the dosimetry of patients undergoing diagnostic and interventional radiology procedures.

Debido a que los procedimientos de radiodiagnóstico e intervencionismo representan una de las principales fuentes de irradiación a la población por radiaciones ionizantes, se vuelve prioritario conocer las magnitudes y unidades que dan cuenta de la dosimetría a los pacientes. Existen innumerables documentos y recomendaciones internacionales sobre nombres, conceptos, definiciones y campos de aplicación para diversas magnitudes y unidades utilizadas en la dosimetría de pacientes en procedimientos de radiodiagnóstico e intervencionismo. Sin embargo, la legislación nacional no se encuentra actualizada en este sentido y no contempla en ninguno de sus documentos, un glosario actualizado que permita encontrar en forma rápida y precisa este tipo de información. Por lo anterior, este trabajo de revisión presenta de manera didáctica y en un lenguaje sencillo, las principales magnitudes y unidades que se deben utilizar en la dosimetría de pacientes sometidos a procedimientos de radiodiagnóstico e intervencionismo.

Tenosinovitis química de dedo medio por corticoides intraarticulares con evolución a síndrome compartimental en paciente con lupus eritematoso sistémico / Chemical tenosynovitis in middle finger after intra-articular corticosteroids infiltration evolving to compartment syndrome in a patient with systemic lupus erythematosus

Tenosynovitis is the inflammation of the tendon and synovial sheath. It is commonly affects hands and wrist. The etiology may be infectious or inflammatory. In patients with Systemic Lupus Erythematosus (SLE) the periarticular and tendinous commitment is frequent. Intra-articular corticosteroids (CO) are effective as adjuvant of the systemic therapy. Complications of use are infrequent. The case of a female patient is presented, 32 years old, with SLE and chronic renal failure secondary to lupus nephritis, chronic user of oral CO. She is infiltrates with intra-articular deposit betamethasone in metacarpal-phalangeal (MCP), because of articular edema. Twelve days later evolves with Compartment Syndrome (SC). Fasciotomy show findings compatible with chemical synovitis by betamethasone crystals. Currently there are quite few reports in the literature of CS with presentation in fingers. The diagnosis is mainly clinical. The common use of intra-articular CO is not without risk and should be planned and diagnosed early...

Tenosinovitis es la inflamación del tendón y vaina sinovial. Es más frecuente en manos y muñecas. Su etiología es infecciosa o inflamatoria. En pacientes con Lupus Eritematoso Sistémico (LES) el compromiso periarticular y tendíneo es frecuente. Los corticoides (CO) intraarticulares son efectivos como adyuvante de terapia sistémica. Las complicaciones de su uso son infrecuentes. Se presenta el caso de paciente sexo femenino, 32 años, con LES e insuficiencia renal crónica secundaria a nefropatía lúpica, usuaria de CO orales. Por edema articular se le infiltra betametasona de depósito intraarticular en metacarpo-falángica (MCF). Evoluciona doce días después con Síndrome Compartimental (SC). Durante la fasciotomía se evidencian hallazgos compatibles con sinovitis química por cristales de betametasona. Existe escaso reporte en la literatura de SC en dedos de la mano. El diagnóstico es principalmente clínico. El uso común de CO intraarticulares no está exento de riesgos y deben ser previstos y diagnosticados precozmente...

¿Se sustentan las Guías GES en trabajos científicos financiados por los fondos de CONICYT? / Contribution of Chilean research to the formulation of national clinical guidelines

Background: In Chile, 80 diseases were included in a health care system called Health Care Guarantees (GES) and clinical guidelines were elaborated for their management. Aim: To assess the scientific background of guidelines and if they were based on research financed by the Chilean National Commission for Science and Technology. Material and Methods: The references of the 82 guidelines developed for 80 diseases were reviewed, registering their number, authors, country of origin and funding source. Results: The guidelines had a total of 6,604 references. Of these, only 185 were Chilean (2.8%) and five (0.08%) originated from research financed by the National Commission for Science and Technology. Conclusions: The contribution of research funded by national agencies to the formulation of clinical guidelines is minimal.

Leucemia eosinofílica crónica con respuesta hematológica sostenida tras tratamiento con bajas dosis de imatinib / Sustained hematologic response in chronic eosinophilic leukemia with low dose imatinib. Report of one case

We report a 58 year-old-man without comorbid conditions, with a history of two months of weight loss, malaise and headache. His initial laboratory analysis showed leukocytosis of 16,100/mL with 65% eosinophils and an absolute eosinophil count of 10,465/mL. Both bone marrow biopsy and aspirate showed infiltration by mature appearing eosinophils. Treatment was started with hydroxyurea, associated with prednisone without satisfactory decrease in the eosinophil count. Polymerase chain reaction showed the presence of the gene fusion product FIP1L1/PDGFRA. Imatinib therapy was initiated, resulting in a rapid and progressive reduction in the absolute eosinophil count, with normalization at the second week of treatment. The incidence of the myeloproliferative variant causing hypereosinophilic syndrome is rare. However, the dramatic response to imatinib emphasizes the need to study the presence of the fusion product FIP1L1/PDGFRA in all patients with eosinophilia of unknown etiology.

Perfil epidemiológico y características generales de las víctimas de atentados sexuales en el hospital de San Javier / Epidemiological profile and general characteristics victims of sexual assault in the Hospital San Javier

Sex crimes break the people’s sexual self-determination and minor` sexual indemnity. They do not only relate to physical force, but involve different types of sexual violence. We made a descriptive review of all cases observed in the emergency room of San Javier’s hospital from January 2009 to December2011.Records of the emergency department and the standard questionnaire delivered by the legal medical service to all health centers, were analyzed. Eighty-four percent were female,58 percent under 18 years-old, 76 percent single, 50 percent students and 52 percent had urban residence. In half of the cases were reported to the police, rape was the most reported attack with52 percent and percent of complaints were originated from a single event. Was obtained 36 percent of normal physical examinations. The most frequent lesions were extragenital, followed by genital and coloproctologic. Sixty-four percent of the offenderswere known by the victim; in 36 percent of cases the perpetrator was a relative and 6 percent of them was the father of the victim. We conclude that women are the main victims of sexual assaults,mainly children, singles and students. We recommenda systematic review of such complaints.

Insuficiencia renal aguda secundaria como manifestación inicial de favismo en un adulto mayor: Caso clínico / Favism presenting as an acute renal failure: Report of one case

Background: We report a 67-year-old man presenting with abdominal pain of acute onset, pallor, jaundice and behavioral changes after ingestion of fava beans. In the initial evaluation he appeared acutely ill and had resting dyspnea, edema and jaundice. His initial laboratory assessment disclosed azotemia, elevated lactate dehydrogenase levels, a low hemoglobin concentration (4.9 /dL) and a high corrected reticulocyte count (4,7%) with negative direct and indirect Coombs' test. The patient was transferred to the ICU, where he received support therapy with hemodialysis, mechanical ventilation, vasoactive drugs and transfusions of packed red cells. The evolution after 1 month was favorable and he was discharged without anemia and with normal renal function. Three months after discharge, the glucose-6-phosphate-dehydrogenase screening study did not demonstrate detectable enzymatic activity.