Resumen Introducción: la pancreatitis es una patología frecuente en nuestro medio, mayormente relacionada con la patología biliar benigna. Esta puede progresar a formas severas en 10 %-15 % de los casos, en donde el tejido pancreático se necrosa y forma grandes colecciones, con riesgo de infección. En Colombia no conocemos los datos epidemiológicos acerca de la incidencia de este tipo de complicaciones, ni del manejo de las mismas. Objetivo: este estudio tiene como objetivo estudiar la prevalencia de la necrosis pancreática infectada y describir los casos identificados en un hospital de alto nivel de complejidad entre 2014 y 2021. Métodos: estudio observacional de corte transversal. Se analizaron los registros de pacientes diagnosticados con pancreatitis en segunda etapa. Se estudiaron aquellos casos que presentaron necrosis pancreática infectada y se sometieron a desbridamiento más drenaje quirúrgico por vía laparoscópica y abierta en el Hospital Universitario Mayor Méderi de Bogotá, Colombia, entre enero de 2014 y enero de 2021. Se realizó un muestreo por conveniencia, sin cálculo de tamaño de muestra. Se recolectaron variables demográficas y clínicas de los pacientes. Se realizó un análisis estadístico descriptivo de las variables obtenidas en Excel. Las variables cualitativas se describieron a través de frecuencias absolutas y relativas; mientras que las cuantitativas se expresaron mediante medidas de tendencia central y de dispersión en función de su distribución. Resultados: se analizaron 1020 episodios de pancreatitis y se evidenció necrosis pancreática en 30 pacientes, es decir, una prevalencia de período de 2,9 %. De los pacientes, 83 % (n = 25) se llevó a drenajes por vía abierta, con un 48 % (n = 12) de mortalidad. En relación con el manejo por vía laparoscópica, la reducción en la falla orgánica posoperatoria fue de 40 % (n = 2), con un 30 % menos de duración en la estancia hospitalaria, comparado con la vía abierta. Aquellos pacientes que presentaron un nivel de procalcitonina (PCT) menor de 1,8 ng/mL tuvieron menos mortalidad. Conclusiones: el abordaje laparoscópico muestra resultados prometedores en cuanto a la morbilidad y mortalidad final observada.

Abstract Introduction: Pancreatitis is a frequent pathology in our environment, mostly related to benign biliary pathology. It can progress to severe forms in 10-15 % of cases, where the pancreatic tissue becomes necrotic and forms large collections with risk of infection. We do not have epidemiological data about the incidence or management of this complication in Colombia. Aim: This study aims to study the prevalence of infected pancreatic necrosis and describe the cases identified in a quaternary care hospital between 2014 and 2021. Materials and methods: A cross-sectional observational study. We analyzed records of patients diagnosed with stage 2 pancreatitis. Those cases with infected pancreatic necrosis that underwent debridement plus laparoscopic and open surgical drainage at Hospital Universitario Mayor Méderi in Bogotá, Colombia, between January 2014 and January 2021 were studied. A convenience sampling was carried out without calculating the sample size. We collected the patients’ demographic and clinical variables, performing a descriptive statistical analysis in Excel. Qualitative variables were described through absolute and relative frequencies, while quantitative ones were expressed through measures of central tendency and dispersion based on their distribution. Results: We analyzed 1020 episodes of pancreatitis, finding pancreatic necrosis in 30 patients, i.e., a period prevalence of 2.9 %. Of the patients, 83 % (n = 25) underwent open drainage, with 48 % (n = 12) mortality. About laparoscopic management, the reduction in postoperative organ failure was 40 % (n = 2), with a 30 % shorter hospital stay than the open drainage approach. Those patients with a level of procalcitonin (PCT) lower than 1.8 ng/mL had less mortality. Conclusions: The laparoscopic approach shows promising results regarding final morbidity and mortality.

Resumen Presentamos el caso de un paciente de 68 años, sin antecedentes de importancia, que por su cuadro clínico y resultados paraclínicos fue clasificado con riesgo intermedio para coledocolitiasis. En efecto, por medio de colangiorresonancia se realizó el diagnóstico confirmatorio. Fue llevado a colangiopancreatografía retrograda endoscópica en dos ocasiones -la primera fallida por papila intradiverticular-; en el segundo intento (exitoso con extracción del lito), el paciente presentó evolución posprocedimiento tórpida, con marcado dolor abdominal y anemización. Fue llevado a tomografía de abdomen con contraste, la cual confirmó el diagnóstico de hematoma subcapsular. Se decidió implementar el manejo conservador y se logró un control adecuado del sangrado.

Abstract This is the case of a 68-year-old female patient, with no relevant history, who was classified as intermediate risk for choledocholithiasis due to her symptoms and lab test results. The diagnosis was confirmed by means of cholangioresonance. She was taken to ERCP on two occasions; the first failed due to intradiverticular papilla, and during the second attempt (successful with the removal of the stone), the patient had a torpid post-procedure evolution, with marked abdominal pain and anemization. An abdominal tomography with contrast was performed, which confirmed the diagnosis of subcapsular hematoma. A conservative management was implemented, achieving adequate bleeding control.

Resumo A etnomuseologia visa engajar os povos indígenas em um diálogo com a sua cultura material. Este artigo reflete sobre uma experiência efetuada no acervo etnográfico do Museu Paraense Emílio Goeldi com interlocutores Mebêngôkre-Kayapó e Baniwa sobre importantes coleções de seus respectivos povos, as quais datam do início do século XX. Além de perceber diferenças entre conceitos museológicos, ou científicos, e indígenas sobre as peças e os processos de musealização, também foi possível observar uma série de diferenças culturais entre os Mebêngôkre-Kayapó e os Baniwa no que concerne à maneira de se relacionar com os objetos de seu passado. Ambos os grupos atribuíram características subjetivas aos objetos no acervo, mas, no caso dos Mebêngôkre-Kayapó, a subjetividade das peças antigas representava uma ameaça aos visitantes do acervo, levando a um certo receio em manusear as peças, concebidas com troféus de guerra capturados de inimigos perigosos. Os Baniwa, ao contrário, expressavam grande carinho com os ‘objetos do vovô’ e sentiam-se no direito de manusear as peças que representam o patrimônio de clãs patrilineais. Esta experiência em etnomuseologia comparada ressalta a diversidade de conceitos, atitudes e expectativas dos povos indígenas perante às coleções museológicas, e a necessidade desta nova abordagem de pesquisa colaborativa.

Abstract Ethnomuseology seeks to put indigenous people in dialog with their own material culture heritage. This article reflects on collaborative research carried out with Mebêngôkre-Kayapó and Baniwa consultants on important collections of both groups from the early twentieth century. In addition to noting differences between museological or scientific and indigenous concepts about museum objects, we also noticed a number of cultural differences in the way the two indigenous groups related to objects from their past. While both cultural groups attributed subjective characteristics to museum objects, for the Mebêngôkre-Kayapó this subjectivity expressed itself mostly in terms of possible threats to visitors of the museum collections, leading to a hesitancy to handle museum objects, assumed to be war trophies captured in the past from dangerous enemies. The Baniwa, by contrast, expressed great affection for ‘grandpa’s things’, and they felt they had a right to handle objects that represent the heritage of patrilineal clans. This experience in ethnomuseology highlights the diversity of indigenous concepts, attitudes and expectations about museum collections and the need for the dialogical approach to collaborative research.

Resumo Neste estudo, o objetivo foi investigar se trabalhadores em uma empresa de conhecimento intensivo que compartilham conhecimento na mesma proporção e que possuem número similar de lacunas estruturais são avaliados como tendo status equivalente. O estudo foi operacionalizado por meio da análise de 462 díades (22*(22−1)) que compõem os relacionamentos sociais presentes em uma organização de desenvolvimento de tecnologia para telemedicina. Os resultados apontam que a similaridade nas variáveis independentes se associa a similaridade de status informacional, mas a interação entre elas não. Conclui-se que a igualdade de status pode ser alcançada mesmo quando dois atores possuem bases diferentes para sua construção, seja por meio de práticas de compartilhamento de conhecimento ou por meio de lacunas estruturais. Tal conclusão relativiza o que é denominado Efeito Mateus nas pesquisas sobre status.

Abstract The aim of this study was to evaluate to what extent the similarity of informational status of intra-organizational actors relates to behavioral (knowledge sharing) and structural antecedents (structural holes) in a knowledge-intensive organization. The study was operationalized through the analysis of 462 dyads (22 * (22 − 1)) that comprise social relationships in a development organization of technology for telemedicine. The results indicate that the similarity of independent variables was associated to similarity in informational status, but there is no interaction between them. It is concluded that the equal status can be achieved even when two actors have different bases for its construction, whether through knowledge sharing practices or through structural holes. This conclusion relativizes what is called Matthew effect in status research.

Resumen El objetivo en este estudio es analizar si existe similitud de estatus informativo entre los trabajadores de una organización intensiva en conocimiento que comparten conocimiento de manera proporcional y que tienen los mismos vacíos estructurales. Se ha llevado a cabo el estudio por medio del análisis de 462 pares (22*(22−1)) que componen las relaciones sociales en una organización de desarrollo de tecnología para telemedicina. Los resultados indican que la similitud en las variables independientes se relaciona con la similitud de estatus informativo, pero no hay interacción entre ellas. Se concluye que la situación de igualdad de estatus puede lograrse incluso cuando dos actores tienen diferentes bases para su construcción, ya sea por medio de prácticas de intercambio de conocimiento o de vacíos estructurales. Dicha conclusión relativiza el denominado Efecto Mateo en estudios sobre estatus.

This work intends to introduce a probabilistic approach for the crack propagation analysis. It presents a methodology that is based on the distribution of the initial flaw size a0. Departing from fatigue test results for specific structural components, an estimation of the initial flaw distribution is obtained, and from this distribution it becomes possible to establish the appropriate initial flaw size for crack propagation analysis for the chosen statistical distribution, such as Weibull or Log-normal. The methodology allows to apply different values of a0 for different components or structural details, reflecting the quality of the manufacturing process for the item evaluated. Two examples of practical applications of the EIFS concept are presented, corresponding to lugs and shear joints usually used for aerospace applications.