Gastrointestinal Foreign Bodies: 14 Years of Experience in a University Clinic

Introduction: Ingesting foreign bodies is a common medical problem, especially in the emergency department. Some small studies describe experiences in this regard. Materials and methods: A descriptive retrospective study included patients with suspected ingestion of foreign bodies admitted to the gastroenterology and GI endoscopy service of the Clínica Universitaria Colombia between January 2007 and August 2020. Results: The age of occurrence of the event was 18 to 95 years, and the average age was 45 years. The foreign bodies ingested and found were variable. The most frequent was fish bones, representing 64.11% of the cases, followed by chicken bones and dietary impaction. Thirty-eight percent of patients required foreign body removal; the most frequently used tool was the foreign body forceps. The primary location was the esophagus in 12.53% of cases, followed by the cricopharynx in 11.18% and the hypopharynx in 10%. Conclusions: The Clínica Universitaria Colombia is a referral site for many gastroenterology emergencies due to its high technological level and extensive human resources. This paper probably describes the largest number of patients with this reason for consultation, which is why this retrospective descriptive study was designed. It shows the demographic characteristics, foreign body types, radiological and endoscopic findings, and associated complications, which help to provide a more accurate knowledge of this pathology.

Introducción: La ingesta de cuerpos extraños es un problema médico frecuente, especialmente en el servicio de urgencias. Existen algunos estudios pequeños que describen las experiencias al respecto. Materiales y métodos: Estudio descriptivo, retrospectivo, en el cual se incluyó a pacientes con sospecha de ingesta de cuerpos extraños, ingresados al servicio de gastroenterología y endoscopia digestiva de La Clínica Universitaria Colombia, entre enero de 2007 y agosto de 2020. Resultados: La edad de ocurrencia del evento se presentó en pacientes desde los 18 hasta los 95 años, y la edad promedio fue de 45 años. Los cuerpos extraños ingeridos y encontrados fueron variables; los más frecuentes fueron la ingesta de espinas de pescado, que representó el 64,11% de los casos, seguido por la ingesta de huesos de pollo y la impactación alimentaria. Un 38% de los pacientes requirieron la extracción de cuerpo extraño y la herramienta usada con mayor frecuencia fue la pinza de cuerpo extraño. La localización principal fue el esófago, en el 12,53% de los casos, seguido por la cricofaringe, en el 11,18%, y la hipofaringe, en el 10%. Conclusiones: La Clínica Universitaria Colombia es un sitio de referencia de una gran cantidad de urgencias en gastroenterología debido a su alto nivel tecnológico y al gran recurso humano que requieren. Este trabajo representa probablemente la cantidad más grande de pacientes con este motivo de consulta, razón por la que se diseñó este estudio descriptivo retrospectivo, que muestra las características demográficas, los tipos de cuerpo extraño, los hallazgos radiológicos y endoscópicos y las complicaciones asociadas, que son de utilidad para tener un conocimiento más real de esta patología.

Criptococosis pulmonar en un paciente con colitis ulcerativa tratado con prednisolona y azatioprina / Pulmonary cryptococcosis in a patient with ulcerative colitis treated with prednisolone and azathioprine

Resumen La enfermedad inflamatoria intestinal comprende la enfermedad de Crohn (EC) y la colitis ulcerativa (CU). Esta última es una patología crónica caracterizada por una inflamación difusa de la mucosa colónica, que afecta el recto y se extiende de forma proximal. Su curso clínico es intermitente, con exacerbaciones y remisiones. Su tratamiento, por lo general, es farmacológico, con corticoides, inmunomoduladores e inhibidor del factor de necrosis tumoral (anti tumor necrosis factor, TNF), los cuales causan un estado de inmunosupresión en el paciente, que puede asociarse en algunos casos a infecciones oportunistas. En la literatura se describe la aparición de la criptococosis pulmonar en pacientes con infección por el virus de inmunodeficiencia humana (VIH). En otros casos se asocia al tratamiento farmacológico de pacientes con EC, así como con otras infecciones oportunistas, tales como la tuberculosis y el herpes. Presentamos uno de los primeros casos de criptococosis pulmonar en un paciente con diagnóstico de colitis ulcerativa, quien recibió tratamiento escalonado con salicilatos, inmunomoduladores y terapia biológica. La infección fue documentada clínica, radiológica e histológicamente. El paciente recibió el tratamiento adecuado y presentó una evolución satisfactoria.

Abstract Inflammatory bowel disease comprises Crohn's disease (CD) and ulcerative colitis (UC), the latter being a chronic disease characterized by diffuse inflammation of the colonic mucosa that affects the rectum and extends proximally. Its clinical course is intermittent with exacerbations and remissions and its treatment is generally pharmacological, with steroids, immunomodulators, and anti-tumor necrosis factor inhibitors (TNF), which cause the patient to be in a state of immunosuppression associated, in some cases, with opportunistic infections. The literature describes the occurrence of pulmonary cryptococcosis in patients with human immunodeficiency virus (HIV) infection, in cases associated with drug treatment of patients with CD, as well as with other opportunistic infections such as tuberculosis and herpes. This is one of the first cases of pulmonary cryptococcosis reported in a patient diagnosed with ulcerative colitis, who received step therapy with salicylates, immunomodulators, and biological therapy. The infection was documented clinically, radiologically, and histologically. The patient received the appropriate treatment and had a satisfactory evolution.

Level of traffic stress-based classification: A clustering approach for Bogotá, Colombia.

The Level of Traffic Stress (LTS) is an indicator that quantifies the stress experienced by a cyclist on the segments of a road network. We propose an LTS-based classification with two components: a clustering component and an interpretative component. Our methodology is comprised of four steps: (i) compilation of a set of variables for road segments, (ii) generation of clusters of segments within a subset of the road network, (iii) classification of all segments of the road network into these clusters using a predictive model, and (iv) assignment of an LTS category to each cluster. At the core of the methodology, we couple a classifier (unsupervised clustering algorithm) with a predictive model (multinomial logistic regression) to make our approach scalable to massive data sets. Our methodology is a useful tool for policy-making, as it identifies suitable areas for interventions; and can estimate their impact on the LTS classification, according to probable changes to the input variables (e.g., traffic density). We applied our methodology on the road network of Bogotá, Colombia, a city with a history of implementing innovative policies to promote biking. To classify road segments, we combined government data with open-access repositories using geographic information systems (GIS). Comparing our LTS classification with city reports, we found that the number of bicyclists' fatal and non-fatal collisions per kilometer is positively correlated with higher LTS. Finally, to support policy making, we developed a web-enabled dashboard to visualize and analyze the LTS classification and its underlying variables.

Bicycle safety in Bogotá: A seven-year analysis of bicyclists' collisions and fatalities.

Road safety research in low- and middle-income countries is limited, even though ninety percent of global road traffic fatalities are concentrated in these locations. In Colombia, road traffic injuries are the second leading source of mortality by external causes and constitute a significant public health concern in the city of Bogotá. Bogotá is among the top 10 most bike-friendly cities in the world. However, bicyclists are one of the most vulnerable road-users in the city. Therefore, assessing the pattern of mortality and understanding the variables affecting the outcome of bicyclists' collisions in Bogotá is crucial to guide policies aimed at improving safety conditions. This study aims to determine the spatiotemporal trends in fatal and nonfatal collision rates and to identify the individual and contextual factors associated with fatal outcomes. We use confidence intervals, geo-statistics, and generalized additive mixed models (GAMM) corrected for spatial correlation. The collisions' records were taken from Bogotá's Secretariat of Mobility, complemented with records provided by non-governmental organizations (NGO). Our findings indicate that from 2011 to 2017, the fatal bicycling collision rates per bicyclists' population have remained constant for females while decreasing 53 % for males. Additionally, we identified high-risk areas located in the west, southwest, and southeast of the city, where the rate of occurrence of fatal events is higher than what occurs in other parts of the city. Finally, our results show associated risk factors that differ by sex. Overall, we find that fatal collisions are positively associated with factors including collisions with large vehicles, the absence of dedicated infrastructure, steep terrain, and nighttime occurrence. Our findings support policy-making and planning efforts to monitor, prioritize, and implement targeted interventions aimed at improving bicycling safety conditions while accounting for gender differences.

Assessment of spatial representativity of X-ray tomography to study Vertical Flow Treatment wetlands.

French Vertical Flow (VF) treatment wetlands receive raw wastewater and provide simultaneous sludge and wastewater treatment. For proper sludge handling, the treatment wetland must be designed adequately and specific operational conditions must be maintained. When these conditions are not met, accumulation of biosolids may lead to clogging. Filtration in French VF Treatment wetlands is governed by mechanisms at the pore-scale. They must be better understood to predict reliably biosolid accumulation. X-ray Computed Tomography (Xray-CT) is a promising technique to characterize in detail the morphology of the filtering media in treatment wetlands. In order to set a solid basis for the use of Xray-CT, the spatial representativity of measurements must be assessed. This issue is addressed in this study by successively analyzing spatial properties at the filter scale using Frequency Domain Electromagnetic Measurements (FDEMs), and at the pore scale using Xray-CT. A map of the electric conductivity at the surface of a French VF Treatment wetland is obtained by FDEM that indicates a homogeneous distribution of biosolids to which electrical conductivity is highly correlated. Different morphological properties were computed from Xray-CT after phase segmentation: phase volume fraction profiles, Specific Surface Area profiles and pore size distributions. Samples show several similarities of pore scale properties obtained by Xray-CT independently of the sampling region and especially the same vertical gradients. FDEM measurements and Xray-CT analysis are in agreement to indicate a good influent distribution at the surface of a full-scale mature French VF Treatment wetland. A criterion to define the limits of the deposit layer and gravel layer is introduced. This division allows to compare layers independently. Finally, a 2D-REV analysis suggests that the selected sample diameter of 5 cm is large enough to be representative of the heterogeneous distribution of phases at the pore-scale as long as no Phragmites are present.

Duplicaciones de las vías digestivas / Duplications of digestive tract

Las duplicaciones de las vías digestivas son anomalías congénitas infrecuentes, que se pueden localizar en cualquier parte del tubo digestivo, y son más comunes en los hombres. Hasta en un tercio de los pacientes, se acompañan de otras anomalías congénitas. Se han postulado tres teorías para explicar la causa de las duplicaciones: la de la recanalización de la luz intestinal, la del accidente vascular intrauterino y la de la unión o "hermanamiento" incompleta. Se clasifican en duplicaciones quísticas, cuando se comunican con la luz intestinal normal, y en duplicaciones tubulares, cuando no lo hacen; según algunas series, las primeras corresponden de 70 a 75 % de los casos informados y, las segundas, del 25 al 30 %. Poseen tres características esenciales, que son: estar unidas a cualquier segmento del tubo digestivo y con una irrigación sanguínea común; tener una capa muscular, y poseer un revestimiento epitelial que, generalmente, corresponde a la mucosa del mismo trayecto. Los síntomas más comunes son dolor abdominal inespecífico, náuseas, vómitos, hemorragia gastrointestinal, invaginación, obstrucción, ictericia y pancreatitis. El diagnóstico se basa, especialmente, en estudios imagenológicos, desde la radiografía simple hasta la resonancia magnética, siendo de gran importancia la ecografía prenatal. El tratamiento quirúrgico es la principal opción terapéutica, en la cual se usa cada vez más la vía laparoscópica

Alimentary tract duplications are rare congenital lesions that can occur anywhere in the gastrointestinal tract. Three hypotheses about their etiology had been proposed, The luminal recanalization theory, the intrauterine vascular accident theory, and the abortive twinning theory. According to some series, three quarters of gastrointestinal duplications are cystic with no communication to the adjacent alimentary tract, while the remaining are tubular and may communicate with the intestinal lumen.They have three essential characteristics: they are attached to any segment of the gastrointestinal tract and with the same blood supply, having a muscular layer and possessing an epithelial lining that corresponds generally to the mucosa of the same path. The most common symptoms are nonspecific abdominal pain, nausea, vomiting, gastrointestinal hemorrhage, invagination, obstruction, jaundice and pancreatitis. The diagnosis is based mainly on imaging studies, ranging from simple radiography to nuclear resonance, with prenatal ultrasound being of great importance. Surgical treatment is the main therapeutic option, being increasingly used the laparoscopic route

Causas inesperadas de abdomen agudo / Unexpected causes of acute abdomen

El abdomen agudo es un síndrome abdominal doloroso, que requiere rápida valoración y tratamiento médico, endoscópico o quirúrgico. Existen varias clasificaciones y, según su etiología, puede ser traumático o no traumático; a su vez, este último puede ser de tipo obstructivo, inflamatorio o vascular. Los pacientes sometidos a cirugía por abdomen agudo presentan principalmente diagnóstico de enfermedades biliares, apendicitis y hernias de pared abdominal, pero en no pocas ocasiones, el cirujano encuentra pacientes con abdomen agudo quirúrgico de causa no clara. Por esta razón, se deben tener en cuenta enfermedades insospechadas que, en forma cada vez más frecuente, son informadas en la literatura médica, entre ellas, algunas de tipo inflamatorio, como apendicitis epiploica, torsión del epiplón y compromiso del divertículo de Meckel; obstructivo, como neoplasias y hernias internas, o vascular, como púrpura hepática (peliosis hepatis), ruptura esplénica, hemoperitoneo espontáneo y vasculitis. Se hizo una búsqueda en PubMed y Clinical Key, con las palabras claves: "causes, unexpected, and acute abdomen", y se encontraron 44 artículos publicados en los últimos cinco años, los cuales fueron analizados identificando las principales causas inesperadas de abdomen agudo

Acute abdomen is a painful abdominal syndrome which requires rapid assessment and medical, endoscopic, or surgical treatment. There are several classifications and, according to the etiology, it may be traumatic and nontraumatic; the latter can be of obstructive, inflammatory, or of vascular type. Patients undergoing surgery for acute abdomen mainly present with diagnosis of biliary diseases, appendicitis, and abdominal wall hernias, but on many occasions the surgeon finds patients with acute abdomen of unclear cause which make taking into account unsuspected pathologies that appear increasingly reported in the medical literature, such as some inflammatory pathologies as omental appendicitis, torsion of the omentum, complicated Meckel's diverticulum, obstructive conditions due to neoplastic lesions or internal hernias, and vascular (hepatic peliosis, splenic rupture, spontaneous hemoperitoneum, vasculitis). A search was conducted in Pub Med and Clinical Key, with the keywords: "causes, unexpected, and acute abdominal", finding a total of 44 articles published in the last five years, which were analyzed by identifying the main unexpected causes of acute abdomen

La entrevista motivacional en adicciones / Motivational interviewing in addictions

Introducción: En los últimos 15 años, la entrevista motivacional se ha convertido en uno de los métodos más populares y efectivos en el manejo de las adicciones, hecho sustentado por numerosas investigaciones. Objetivo: Llevar a cabo una revisión teórica de las principales características de la entrevista motivacional y la evidencia clínica disponible. Método: Revisión de la literatura médica publicada sobre el tema, utilizando la base de datos MedLine. Resultados: La entrevista motivacional es un tipo de intervención centrado en el paciente, ampliamente documentado e investigado y con efectividad demostrada, que aprovecha la ambivalencia frente a una problemática y, por medio de una escucha reflexiva y algunas intervenciones puntuales, intenta lograr su resolución, generando una mayor disposición al cambio del comportamiento lesivo en el paciente. Conclusión: La entrevista motivacional es una herramienta efectiva en el manejo de los pacientes, que recupera espacios terapéuticos y favorece el proceso de cambio. Podría ser una herramienta útil en el ámbito colombiano, dadas sus características...

Introduction: In the last 15 years, Motivational Interviewing (MI) has become one of the most popular and effective methods to treat drug addictions. Its efficacy is supported by numerous investigations. Objective: To review the main theoretical characteristics of MI and clinical evidence available. Method: We reviewed the medical literature on the subject, using the Medline database. Results: MI is a patient-centered intervention, with proven effectiveness that takes advantage of the ambivalence toward a problem, and through reflective listening and some targeted interventions, achieve resolution of the ambivalence, leading to greater willingness to change the addictive behavior in the patient. Conclusions: MI is an effective tool in the management of drug addicted patients by recovering therapeutic areas and encouraging the process of change. Given its characteristics, MI could be a useful tool for the treatment of drug addicts in the Colombian context...