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El conocimiento del espacio suboccipital (OA) es esencial para el clínico debido a que su disminución se asocia a posible causa de cefaleas. El objetivo de este estudio fue determinar las diferencias entre la longitud del espacio suboccipital en telerradiografías laterales entre hombres y mujeres de distintos rangos etarios. En este estudio transversal se analizaron un total de 371 telerradiografías laterales de cráneo. Se realizó estadística descriptiva y la aplicación de prueba T-Student y ANOVA para evaluar la asociación entre el espacio suboccipital con el género y la edad. La distancia media del espacio suboccipital fue de 5.62 ± 2.7 mm, siendo mayor en hombres que en mujeres (6.49 ± 2.8 mm y 5.09 ± 2.5 mm respectivamente, p<0.001). Con respecto a la edad, la distancia del espacio suboccipital no presentó variaciones significativas. La longitud del OA entre los hombres y mujeres de distintos grupos tampoco mostró diferencias significativas. Existe una gran variabilidad en la distancia del espacio suboccipital, el cual se observa más disminuido en mujeres, por lo que se sugiere un análisis individual mediante telerradiografía lateral frente a pacientes con cefaleas.

SUMMARY: Knowledge of the suboccipital space (OA) is essential for clinicians because its decrease is associated with headache. The aim of this study was to determine the differences in the length of the suboccipital space in lateral cephalograms of men and women of different age ranges. In this cross-sectional study, a total of 371 lateral cephalograms were analyzed. Descriptive statistics and the application of Student's t-test and ANOVA were performed to evaluate the association between the suboccipital space with sex and age. The mean distance of the suboccipital space was of 5.62 ± 2.7 mm, being higher in men than women (6.49 ± 2.8 mm and 5.09 ± 2.5 mm respectively, p < 0.001). Regarding age, the distance of the suboccipital space did not show significant variations. The length of the OA between men and women of different age groups also showed no significant differences. There is a great variability in the distance of the suboccipital space, which is observed to be more decreased in women; therefore, an individual analysis by lateral cephalograms is suggested in patients with chronic headaches.

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Pre-implantation embryos release extracellular vesicles containing different molecules, including DNA. The presence of embryonic DNA in E-EVs released into the culture medium during in vitro embryo production could be useful for genetic diagnosis. However, the vesicles containing DNA might be derived from embryos suffering from apoptosis, i.e., embryos of bad quality. This work intended to confirm that embryos release DNA that is useful for genotyping by evaluating the effect of embryonic apoptosis on DNA content in E-EVs. Bovine embryos were produced by parthenogenesis and in vitro fertilization (IVF). On Day 5, morulae were transferred to individual cultures in an EV-depleted SOF medium. On Day 7, embryos were used to evaluate cellular apoptosis, and each culture medium was collected to evaluate E-EV concentration, characterization, and DNA quantification. While no effect of the origin of the embryo on the apoptotic rate was found, arrested morulae had a higher apoptotic rate. E-EVs containing DNA were identified in all samples, and the concentration of those vesicles was not affected by the origin or quality of the embryos. However, the concentration of DNA was higher in EVs released by the arrested parthenogenetic embryos. There was a correlation between the concentration of E-EVs, the concentration of DNA-positive E-EVs, and the concentration of DNA. There was no negative effect of apoptotic rate on DNA-positive E-EVs and DNA concentration; however, embryos of the best quality with a low apoptotic rate still released EVs containing DNA. This study confirms that the presence of DNA in E-EVs is independent of embryo quality. Therefore, E-EVs could be used in liquid biopsy for noninvasive genetic diagnosis.

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El priapismo es una erección dolorosa y persistente acompañada o no de estímulo sexual. Una causa poco frecuente de esta anormalidad es la leucemia mieloide crónica. Se han reportado pocos casos de priapismo como manifestación inicial de una leucemia de este tipo en pacientes adolescentes. A continuación, se informa el caso de un paciente de 16 años de edad que presentó priapismo como manifestación inicial de una leucemia mieloide crónica. Durante su evolución, no se realizó aspiración de los cuerpos cavernosos. Se inició tratamiento hematológico específico y, ante la persistencia del priapismo, fue necesario realizar un shunt de cuerpos cavernosos en dos ocasiones, tratamiento a pesar del cual existen altas probabilidades de secuelas.

Priapism is a painful and persistent erection, with or without sexual stimulation. A rare cause of such abnormality is chronic myeloid leukemia. Few cases of priapism as an initial manifestation of this type of leukemia have been reported in adolescent patients. Here we describe the case of a 16-year-old patient who presented with priapism as the initial manifestation of chronic myeloid leukemia. No cavernosal aspiration was performed. A specific hematological treatment was started and, given the persistence of priapism, the patient required 2 corpora cavernosa shunt procedures; despite this treatment, there is a high probability of sequelae.

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Priapism is a painful and persistent erection, with or without sexual stimulation. A rare cause of such abnormality is chronic myeloid leukemia. Few cases of priapism as an initial manifestation of this type of leukemia have been reported in adolescent patients. Here we describe the case of a 16-year-old patient who presented with priapism as the initial manifestation of chronic myeloid leukemia. No cavernosal aspiration was performed. A specific hematological treatment was started and, given the persistence of priapism, the patient required 2 corpora cavernosa shunt procedures; despite this treatment, there is a high probability of sequelae.

El priapismo es una erección dolorosa y persistente acompañada o no de estímulo sexual. Una causa poco frecuente de esta anormalidad es la leucemia mieloide crónica. Se han reportado pocos casos de priapismo como manifestación inicial de una leucemia de este tipo en pacientes adolescentes. A continuación, se informa el caso de un paciente de 16 años de edad que presentó priapismo como manifestación inicial de una leucemia mieloide crónica. Durante su evolución, no se realizó aspiración de los cuerpos cavernosos. Se inició tratamiento hematológico específico y, ante la persistencia del priapismo, fue necesario realizar un shunt de cuerpos cavernosos en dos ocasiones, tratamiento a pesar del cual existen altas probabilidades de secuelas.

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Ketorolac, a highly persistent NSAID of environmental concern, was significantly removed from water (80% removal) through photoelectrocatalysis where titanium dioxide nanotubes prepared by Ti foil electrochemical anodization at 30 V were used as photoanodes. Fifteen milligrams per liter of ketorolac solutions in a 0.05 M Na2SO4 aqueous medium was subjected to irradiation from a 365-nm light with an intensity of 1 mWcm-2 and under an applied potential of 1.3 V (vs. Hg/Hg2SO4/sat.K2SO4) at pH 6.0. When each process (photo and electrocatalysis) was carried out separately, less than 20% drug removal was achieved as monitored through UV-vis spectrophotometry. Through scavenging experiments, direct oxidation on the photogenerated holes and oxidation by hydroxyl radical formation were found to play a key role on ketorolac's degradation. Chemical oxygen demand (COD) analyses also showed a significant COD decreased (68%) since the initial COD value was 31.3 mg O2/L and the final COD value was 10.1 mg O2/L. A 48% mineralization was also achieved, as shown by total organic carbon (TOC) analyses. These results showed that electrodes based on titania nanotubes are a promising alternative material for simultaneous photocatalytic and electrocatalytic processes in water remediation.

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La Proteína Verde Fluorescente (Green Fluorescent Protein, GFP) es ampliamente utilizada en ensayos in vivo e in vitro. Se han generado múltiples variantes de esta proteína para diversificar sus características, como la GFP-enhancer (EGFP) que emite una señal de fluorescencia 35 veces mayor en comparación con la proteína silvestre, siendo implementada como proteína fusión en estudios de localización y estabilidad estructural, entre otros. La detección de esta proteína y sus variantes puede ser directa o indirecta, mediante el uso de anticuerpos anti-GFP. Aunque el uso de GFP es generalizado y de evidente utilidad en investigación y en docencia, los insumos para su estudio exhiben un alto costo dado que deben ser importados, constituyendo un recurso limitado en Colombia. El presente trabajo reporta la clonación y expresión de la proteína recombinante 6xHisEGFP, cuya purificación se completó a partir de la fracción soluble e insoluble del sistema heterólogo Escherichia coli mediante cromatografía de afinidad a metales inmovilizados y electroforesis preparativa, respectivamente. La proteína purificada se implementó como antígeno para la producción de anticuerpos policlonales aviares (IgY) contra la EGFP, los cuales se obtuvieron desde los huevos colectados y el suero de las sangrías de las gallinas inmunizadas. En este sentido, la estrategia metodológica planteada constituye un avance en el desarrollo de un sistema biotecnológico para la producción nacional de herramientas moleculares como los anticuerpos policlonales aviares a bajo costo.

Green Fluorescent Protein (GFP) is widely used in in vivo and in vitro assays. Multiple variants of this protein have been generated to diversify its characteristics, such as the enhancer GFP (EGFP) that emits a 35-fold higher fluorescence signal compared to the wild-type protein, being implemented as a fusion reporter in localization and structural stability studies, among others. Detection of this protein can be direct or indirect, fusing anti-GFP antibodies. Although the use of GFP is generalized and of evident utility in research and teaching, the molecular tools for its study exhibit a high cost since they must be imported, constituting a limited resource in Colombia. This work reports the cloning and expression of the recombinant protein 6xHisEGFP, which purification was completed from the soluble and insoluble fraction of the heterologous Escherichia coli system by immobilized metal affinity chromatography and preparative SDS-PAGE, respectively. The purified protein was implemented as an antigen to produce avian polyclonal antibodies (IgY) against EGFP, which were obtained from collected eggs and blood serum from immunized hens. In this sense, the proposed methodological strategy constitutes an advance in the development of a biotechnological system for the national production of molecular tools such as avian polyclonal antibodies at low-cost.

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Floral syndromes are known by the conserved morphological traits in flowers associated with pollinator attraction, such as corolla shape and color, aroma emission and composition, and rewards, especially the nectar volume and sugar concentration. Here, we employed a phylogenetic approach to investigate sequences of genes enrolled in the biosynthetic pathways responsible for some phenotypes that are attractive to pollinators in Solanaceae genomes. We included genes involved in visible color, UV-light response, scent emission, and nectar production to test the hypothesis that these essential genes have evolved by convergence under pollinator selection. Our results refuted this hypothesis as all four studied genes recovered the species' phylogenetic relationships, even though some sites were positively selected. We found differences in protein motifs among genera in Solanaceae that were not necessarily associated with the same floral syndrome. Although it has had a crucial role in plant diversification, the plant-pollinator interaction is complex and still needs further investigation, with genes evolving not only under the influence of pollinators, but by the sum of several evolutionary forces along the speciation process in Solanaceae.

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Background: identifying patients at risk for negative outcomes is key for performing a timely triage and adapting the care intensity for patients with COVID-19. Early warning scores are rules that alert to the risk of adverse outcomes during hospitalization. We sought to validate the modified NEWS, NEWS-2 and COVID-19 Severity Index (CSI). Methods: a prospective observational multicenter study of patients hospitalized for CO VID-19 at three quaternary care hospitals in Bogotá, Colombia, between April and November 2020. The operating characteristics and areas under the ROC curve were calculated. Results: 711 patients were included, in whom the AUC for death was 0.68, 0.58 and 0.68, and for ICU admission was 0.61, 0.63 and 0.66 for mNEWS, NEWS-2 and CSI, respectively. The CSI had the greatest sensitivity for ICU admission or death (87.6 and 90.0%) and NEWS-2 had the greatest specificity (76.8 and 75.5%). Conclusions: the three early warning scores had a low to moderate performance in pre dicting ICU admission or death in patients hospitalized for COVID-19. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2225).

Antecedentes: la identificación de los pacientes con riesgo de desenlaces negativos es clave para realizar un triage oportuno y adecuar la intensidad de los cuidados en los pacientes con COVID-19. Las puntuaciones de alerta temprana son reglas para advertir el riesgo de desenlaces adversos durante la hospitalización. Buscamos validar el NEWS modificado, NEWS-2 y COVID-19 Severity Index. Metodología: estudio observacional, prospectivo, multicéntrico con pacientes hospitalizados por COVID-19 en tres hospitales de cuarto nivel en Bogotá (Colombia), entre abril y noviembre de 2020. Se calcularon las características operativas y áreas bajo la curva ROC. Resultados: se contó con 711 pacientes entre los cuales el AUC para muerte fue 0.68, 0.58 y 0.68, y para ingreso a UCI de 0.61, 0.63 y 0.66 para NEWSm, NEWS-2 y CSI respectivamente. El CSI alcanzó la mayor sensibilidad para ingreso a UCI o muerte (87.6 y 90.0%) y la mayor especificidad fue el NEWS-2 (76.8 y 75.5%). Conclusiones: las tres puntuaciones de alerta temprana mostraron un desempeño bajo a moderado para la predicción del ingreso a UCI o muerte en pacientes hospitalizados por COVID-19. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2225).

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Bacterial nanocellulose (BNC) is a novel nanomaterial known for its large surface area, biocompatibility, and non-toxicity. BNC contributes to regenerative processes in the skin but lacks antimicrobial and anti-inflammatory properties. Herein, the development of bioactive wound dressings by loading antibacterial povidone-iodine (PVI) or anti-inflammatory acetylsalicylic acid (ASA) into bacterial cellulose is presented. BNC is produced using Hestrin-Schramm culture media and loaded via immersion in PVI and ASA. Through scanning electron microscopy, BNC reveals open porosity where the bioactive compounds are loaded; the mechanical tests show that the dressing prevents mechanical wear. The loading kinetic and release assays (using the Franz cell method) under simulated fluids present a maximum loading of 589.36 mg PVI/g BNC and 38.61 mg ASA/g BNC, and both systems present a slow release profile at 24 h. Through histology, the complete diffusion of the bioactive compounds is observed across the layers of porcine skin. Finally, in the antimicrobial experiment, BNC/PVI produced an inhibition halo for Gram-positive and Gram-negative bacteria, confirming the antibacterial activity. Meanwhile, the protein denaturation test shows effective anti-inflammatory activity in BNC/ASA dressings. Accordingly, BNC is a suitable platform for the development of bioactive wound dressings, particularly those with antibacterial and anti-inflammatory properties.

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OBJECTIVE: The present study examined the effectiveness of after-action reviews (AARs; also known as debriefing) in mitigating skill decay. BACKGROUND: Research on the long-term effectiveness of AARs is meager. To address this gap in the literature, we conducted an experimental study that also overcomes some research design issues that characterize the limited extant research. METHOD: Eighty-four participants were randomly assigned to an AAR or non-AAR condition and trained to operate a PC-based fire emergency simulator. During the initial acquisition phase, individuals in the AAR condition were allowed to review their performance after each practice session, whereas individuals in the non-AAR condition completed a filler task. About 12 weeks later, participants returned to the lab to complete four additional practice sessions using a similar scenario (i.e., the retention and reacquisition phase). RESULTS: The performance of participants in the AAR condition degraded more after nonuse but also recovered faster than the performance of participants in the non-AAR condition, although these effects were fairly small and not statistically significant. CONCLUSION: Consistent with the limited research on the long-term effectiveness of AARs, our findings failed to support their effectiveness as a decay-prevention intervention. Because the present study was conducted in a laboratory setting using a relatively small sample of undergraduate students, additional research is warranted. APPLICATION: Based on the results of the present study, we suggest some additional strategies that trainers might consider to support long-term skill retention when using AARs.

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Introducción: La malaria es una enfermedad protozoaria que continúa siendo un grave problema de salud pública en América Latina. El objetivo fue describir la producción científica de malaria en América Latina en el período 2011-2020. Materiales y métodos: Estudio bibliométrico. Se realizó una búsqueda sistemática en Scopus, se incluyeron artículos en formato IMRD realizados en humanos con malaria como variable principal, durante el período 2011-2020. Resultados: Se encontraron 1731 artículos sobre malaria en Scopus, de los cuales se incluyeron 590 (34,08%) según los criterios de selección. La publicación científica aumentó de 2011 a 2020 en un 147,22%. Se encontró que 415 (70,33%) estudios se publicaron en revistas del primer trimestre y 141 (23,9%) se publicaron en Malaria Journal. Asimismo, 506 (85,76%) estudios fueron redactados en inglés y la entidad de financiación más influyente fue el Conselho Nacional de Desenvolvimento Científico e Tecnológico 117 (11,44%). En 271 (45,93%) estudios, el autor correspondiente tenía afiliación brasileña, y en 53 (8,98%) artículos predominó la Fundação Oswaldo Cruz. En cuanto al diseño, 274 (46,44%) estudios fueron descriptivos, 260 (44,07%) epidemiológicos y 286 (48,47%) se realizaron en personas de la comunidad. Se ha incrementado la producción científica latinoamericana sobre malaria; hay un predominio en las revistas del primer trimestre, siendo Malaria Journal la más importante. La mayoría de los estudios son descriptivos relacionados con la epidemiología. Se requieren esfuerzos para incrementar la producción científica en el resto de países latinoamericanos con alta prevalencia de malaria(AU)

Introduction: Malaria is a protozoan disease that continues to be a serious public health problem in Latin America. The goal was to describe the scientific production of malaria in Latin America during the period 2011-2020. Materials and methods: Bibliometric study. A systematic search was carried out in Scopus, articles in IMRD format carried out in humans with malaria as the main variable were included, during the period 2011-2020. Results: 1731 malaria articles were found in Scopus, of which 590 (34.08%) were included according to the selection criteria. Scientific publication increased from 2011 to 2020 by 147.22%. It was found that 415 (70.33%) studies were published in Q1 journals and 141 (23.9%) published in Malaria Journal. Likewise, 506 (85.76%) studies were written in English language and the most influential funding entity was the Conselho Nacional de Desenvolvimento Científico e Tecnológico 117 (11.44%). In 271 (45.93%) studies, the corresponding author had Brazilian affiliation, and in 53 (8.98%) articles the Fundação Oswaldo Cruz predominated. Regarding the design, 274 (46.44%) studies were descriptive, 260 (44.07%) were epidemiological and 286 (48.47%) were carried out with people from the community. Latin American scientific production on malaria has increased; there is predominance in Q1 journals, with Malaria Journal being the most important. Most of the studies are descriptive related to epidemiology. Efforts are required to increase scientific production in the rest of the Latin American countries with a high prevalence of malaria(AU)

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BACKGROUND: Central venous access (CVA) is a frequent procedure taught in medical residencies. However, since CVA is a high-risk procedure requiring a detailed teaching and learning process to ensure trainee proficiency, it is necessary to determine objective differences between the expert's and the novice's performance to guide novice practitioners during their training process. This study compares experts' and novices' biomechanical variables during a simulated CVA performance. METHODS: Seven experts and seven novices were part of this study. The participants' motion data during a CVA simulation procedure was collected using the Vicon Motion System. The procedure was divided into four stages for analysis, and each hand's speed, acceleration, and jerk were obtained. Also, the procedural time was analyzed. Descriptive analysis and multilevel linear models with random intercept and interaction were used to analyze group, hand, and stage differences. RESULTS: There were statistically significant differences between experts and novices regarding time, speed, acceleration, and jerk during a simulated CVA performance. These differences vary significantly by the procedure stage for right-hand acceleration and left-hand jerk. CONCLUSIONS: Experts take less time to perform the CVA procedure, which is reflected in higher speed, acceleration, and jerk values. This difference varies according to the procedure's stage, depending on the hand and variable studied, demonstrating that these variables could play an essential role in differentiating between experts and novices, and could be used when designing training strategies.

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Introducción: Los valores de la frecuencia cardiaca normales y anormales registrados en los equipos electrocardiográficos ambulatorios o continuos han sido caracterizados mediante nuevas metodologías diagnósticas, las cuales se han desarrollado en el contexto de la teoría de los sistemas dinámicos y la entropía. Objetivo: Evaluar la dinámica cardiaca de adultos, teniendo en cuenta su comportamiento en el contexto de la teoría de sistemas dinámicos y las proporciones de la entropía mediante un estudio ciego. Métodos: Se realizó una prueba diagnóstica mediante un estudio ciego de 500 Holter, aplicando una nueva metodología basada en las proporciones de la entropía del atractor numérico construido con los valores registrados en el Holter. Para esto, los valores máximos y mínimos de la frecuencia cardiaca para cada hora, así como el número de latidos, fueron tomados de cada Holter durante, mínimo, 18 horas. Con estos valores se generó un atractor numérico que cuantificó la probabilidad de parejas de frecuencias cardiacas consecutivas. Se evaluó cada dinámica a partir de los valores de entropía y de sus proporciones. Posteriormente, estos resultados fueron comparados con la evaluación clínica convencional estimando la sensibilidad y especificidad, así como el coeficiente Kappa. Resultados: Se encontraron diferencias entre la dinámica de casos normales y anormales, en las dinámicas cardiacas evaluadas en 18 horas, hallando valores de sensibilidad y especificidad del 100 por ciento y coeficiente Kappa de uno, respecto al diagnóstico clínico convencional. Conclusiones: Los valores de entropía y de sus proporciones permiten diferenciar cuantitativamente la normalidad de la enfermedad en la dinámica cardiaca, durante un mínimo de 18 horas(AU)

Introduction: The normal and abnormal heart rate values recorded on ambulatory or continuous electrocardiographic devices have been characterized with novel diagnostic methodologies developed in the context of dynamic systems and entropy theory. Objective: Through a blind study, evaluate the heart dynamics of adults taking into account their behavior in the context of dynamic systems theory and entropy proportions. Methods: A diagnostic test was conducted through a 500 Holter blind study, applying a novel methodology based on the entropy proportions of the numerical attractor constructed with the values registered on the Holter device. To achieve this end, maximum and minimum heart rate values for each hour, as well as the number of beats, were obtained from each Holter device for at least 18 hours. Based on these values, a numerical attractor was generated which quantified the probability of consecutive heart rate pairs. Each dynamic was evaluated in terms of entropy values and their proportions. These results were then compared with the conventional clinical evaluation, estimating the sensitivity and specificity as well as the kappa coefficient. Results: Differences were found between the dynamics of normal and abnormal cases, in the heart dynamics evaluated in 18 hours, finding sensitivity and specificity values of 100 percent and a kappa coefficient of 1, with respect to conventional clinical diagnosis. Conclusions: Entropy values and their proportions make it possible to quantitatively differentiate the normality of the disease in heart dynamics for a minimum of 18 hours(AU)

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RESUMEN Los problemas de degradación del suelo que se presentan actualmente permiten que los fijadores biológicos de nitrógeno libre (FBNL), tengan potencial como microorganismos regeneradores de este recurso. Con el objetivo de evaluar su capacidad como grupo funcional, se buscó el aislamiento en medios selectivos Ashby y FBN. Luego de su caracterización morfológica y bioquímica; se inocularon dos tipos de semillas, Zea mays y Brachiaria decumbens; sembradas en un suelo degradado (predio La Ortega de la Universidad de Medellín). Se realizaron 4 tratamientos con 5 repeticiones, durante 36 días en invernadero. Los resultados más destacados los presentó la Brachiaria decumbens al incrementar el peso seco y la longitud de sus raíces gracias a un aislado FBNL (AshAssm4); lo que sugiere su potencial utilización para mejorar los procesos de revegetalización.

ABSTRACT Due to the problems of soil degradation that currently occur, the free nitrogen biological fixers (FNBF), have potential as regenerating microorganisms of this resource. With the objective of evaluating its capacity as a functional group, isolation was sought in selective media Ashby and FBN; after its morphological and biochemical characterization; two types of seeds were inoculated, Zea mays and Brachiaria decumbens; planted in degraded soil (La Ortega property of the Universidad de Medellín). Four treatments were performed with 5 repetitions, during 36 days in the greenhouse. The most outstanding results are those described by Brachiaria decumbens by increasing the dry weight and the length of its roots thanks to a FNBF isolate (AshAssm4); which suggests its potential use to improve revegetalization processes.

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Abstract Objective: to describe the clinical and biochemical characteristics and treatment of patients with decompensated heart failure with reduced ejection fraction hospitalized during 2015 at the Hospital Militar Central in Bogotá. Methods: a descriptive study reviewing the clinical records of patients over the age of 18 who were hospitalized due to decompensated heart failure with reduced ejection fraction during 2015. Clinical, biochemical, echocardiographic and treatment variables were recorded. A univariate analysis was performed reporting percentages for qualitative variables, measures of central tendency for quantitative variables, and medians and first and third quartiles for variables with a non-normal distribution. Results: the medical records of 114 patients were analyzed (average age 74.8 years; 69.3% males). The etiology of the heart failure was hypertension in 66.7% and ischemia in 60.5%. Noncompliance was the main precipitating factor for decompensation. High adherence to management guidelines was seen on discharge, with medications at suboptimal doses and ambulatory titration in 32% of patients; 38% were readmitted at least once during the first 30 days. Altogether, 25.4% required ICU care, with a mortality rate of 18%; there was a 16% mortality rate for early readmissions and 3% for patients with late admissions. Conclusion: the clinical profile in this study is similar to what is reported in other research. Adherence to management guidelines is adequate, but at suboptimal doses. There is a high percentage of recorded readmissions and hospital mortality.(Acta Med Colomb 2020; 45. DOI: https://doi.org/10.36104/amc.2020.1233).

Resumen Objetivo: describir las características clínicas, bioquímicas y tratamiento de pacientes con falla cardiaca descompensada con fracción de eyección reducida hospitalizados en el año 2015 en el Hospital Militar Central de Bogotá. Metodología: estudio descriptivo en el que se revisaron registros clínicos de pacientes mayores de 18 años hospitalizados por falla cardiaca descompensada con fracción de eyección reducida en el año 2015. Se registraron variables clínicas, bioquímicas, ecocardiográficas y de tratamiento. Se realizó análisis univariado, reportando para variables cualitativas proporciones, para variables cuantitativas medidas de tendencia central y para variables que no siguen distribución normal, medianas y cuartiles 1 y 3. Resultados: se analizaron registros de 114 pacientes, con edad promedio de 74.8 años, 69.3% hombres. La etiología de la falla cardiaca fue hipertensiva 66.7% e isquémica 60.5%, la no adherencia al tratamiento fue el principal factor precipitante de descompensación, se encontró alta adherencia a guías de manejo al egreso con medicación en dosis subóptimas, y titulación ambulatoria en 32% de los pacientes, el 38% reingresaron al menos una vez dentro de los primeros 30 días. Un 25.4% requirió manejo en UCI con mortalidad de 18% y para reingresos tempranos de 16%, siendo de 3% para pacientes con ingresos tardíos. Conclusión: en este estudio el perfil clínico es semejante a los reportados en otras series. La adherencia a guías de manejo es adecuada pero en dosis subóptimas. Existe un alto porcentaje de reingreso registrados y de mortalidad intrahospitalaria.(Acta Med Colomb 2020; 45. DOI: https://doi.org/10.36104/amc.2020.1233).

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Introduction: Adolescence is the transition between childhood and adulthood. The beginning of reproductive sexual life in this phase means to 1 in 5 adolescents becoming pregnant. 64% of these pregnancies are not planned, which entails high costs in health institutions. Objective: Show by proportional analysis the costs of care for pregnant adolescents in a hospital in the Atlantic department in 2013 and 2017. Materials and methods: Cross-sectional descriptive study, by means of proportional analysis, estimated costs of vaginal delivery by caesarean section and ICU care in 2013 and 2017 periods. Results: It was found that the costs of patients attended in 2013 and 2017, the 2013 proportion is lower (chi-square: 2,287; P> 0.05). In the costs of patients attended by vaginal delivery in 2013 and 2017, the proportion of 2013 is lower (chi-square: 17,340; P <0.05). The costs of patients attended by Cesarean in 2013 and 2017, the proportion of 2013 is lower (chi-square: 5,771; P <0.05). The costs of patients cared for by Caesarean section and patients referred to the ICU for the year 2013, the proportion of patients referred to the ICU is lower. (chi-square: 5,771; P = 0.00 for Cesarean section in 2013 and a chi-square value: 2,276; P = 0.03 for ICU referral in 2013). Conclusions: adolescent pregnancy is a public health problem with an increasing trend that leads to obstetric complications that can occur during this period, plus the high rate of caesarean sections, which therefore increases costs in the provision of health services.

Introducción: La adolescencia marca la separación entre la infancia y la vida adulta, con el inicio de la vida sexual reproductiva conlleva a que 1 de cada 5 adolescentes quede embarazada. El 64% de estos embarazos no sean planeados, generando altos costos en las instituciones de salud. Objetivo: Determinar mediante análisis de proporciones los costos de la atención en embarazadas adolescentes en un hospital del Departamento del Atlántico en los periodos 2013 y 2017. Materiales y métodos: Estudio descriptivo transversal, mediante análisis de proporciones se estimaron costos de parto vaginal cesárea y atención en uci en periodos 2013 y 2017. Resultados: se encontró que los costos de pacientes atendidas en los años 2013 y 2017, la proporción 2013 es menor (chi ­ cuadrado: 2,287; P > 0,05). Los costos de pacientes atendidas por parto vaginal en los años 2013 y 2017, la proporción del 2013 es menor (chi ­ cuadrado: 17,340; P < 0,05). Los costos de pacientes atendidas por Cesárea en los años 2013 y 2017, la proporción del 2013 es menor (chi ­ cuadrado: 5,771; P < 0,05). Los costos de pacientes atendidas por Cesárea y las pacientes remitidas a UCI para el año 2013, la proporción de pacientes remitidas a UCI es menor. (chi ­ cuadrado: 5,771; P = 0,00 para Cesárea en 2013 y un valor de chi ­ cuadrado: 2,276; P = 0,03 para remisión a UCI en 2013). Conclusiones: el embarazo adolescente es un problema de salud pública con tendencia al aumento que acarrea complicaciones obstétricas que pueden presentarse en el transcurso de este periodo más el índice elevado de cesáreas que por ende aumenta los costos en la prestación de los servicios de salud.

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Coastal and freshwater cetaceans are particularly vulnerable due to their proximity to human activity, localized distributions, and small home ranges. These species include Sotalia guianensis, found in the Atlantic and Caribbean coastal areas of central and South America, and Sotalia fluviatilis, distributed in the Amazon River and tributaries. We investigated the population structure and genetic diversity of these 2 species by analyses of mtDNA control region and 8-10 microsatellite loci. MtDNA analyses revealed strong regional structuring for S. guianensis (i.e., Colombian Caribbean vs. Brazilian Coast, FST = 0.807, ΦST = 0.878, P < 0.001) especially north and south of the Amazon River mouth. For S. fluviatilis, population structuring was detected between the western and eastern Amazon (i.e., Colombian Amazon vs. Brazilian Amazon, FST = 0.085, ΦST = 0.277, P < 0.001). Haplotype and nucleotide diversity were higher for S. fluviatilis. Population differentiation was supported by analysis of the microsatellite loci (S. guianensis, northern South America vs. southern South America FST = 0.275, Jost's D = 0.476, P < 0.001; S. fluviatilis, western and eastern Amazon FST = 0.197, Jost's D = 0.364, P < 0.001). Most estimated migration rates in both species overlapped with zero, suggesting no measurable migration between most of the sampling locations. However, for S. guianensis, there was measurable migration in neighboring sampling locations. These results indicate that the small home ranges of these species may act to restrict gene flow between populations separated by relatively short distances, increasing the risk of extirpation of some localized populations in the future if existing threats are not minimized.

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