Clinical and microbiological characterization of Salmonella spp. isolates from patients treated in a university hospital in South America between 2012-2021: a cohort study.

BACKGROUND: Salmonellosis is a major cause of morbidity and mortality and one of the most frequent etiologies of diarrhea in the world. Mortality due to Salmonellosis in Latin America still poorly understood, and there is a lack of studies that evaluate resistance and clinical manifestations. The aims of this study were to characterize patients infected with Salmonella spp. seen in a university hospital in Colombia between 2012 and 2021, to evaluate trends in antibiotic resistance and to determine the proportion of overall mortality and related factors. METHODS: Retrospective observational study. All patients with microbiological diagnosis of Salmonella spp. were included. The sociodemographic, clinical and microbiological characteristics were described, and the proportion of antibiotic resistant isolates per year was estimated. The prevalence of mortality according to age groups was calculated. Log binomial regression models were used to establish factors associated with mortality. RESULTS: Five hundred twenty-two patients were analyzed. Salmonellosis accounted for 0.01% of all medical consultations. The median age was 16 years old. The most common clinical presentation was gastroenteric syndrome (77.1%) and symptoms included diarrhea (79.1%), fever (66.7%), abdominal pain (39.6%) and vomiting (35.2%). Of the Salmonella spp. isolates, 78.2% were not classified, 19.1% corresponded to non-typhoidal Salmonella and 2.7% to Salmonella typhi. Mortality occurs in 4.02% of the patients and was higher in patients with hematologic malignancy (11.6%). When analyzing by age group, the proportion of deaths was 2.8% in patients aged 15 years or younger, while in those older than 15 years it was 5.4%. Factors associated to mortality where bacteremia (aPR = 3.41 CI95%: 1.08-10.76) and to require treatment in the ICU (aPR = 8.13 CI95%: 1.82-37.76). In the last 10 years there has been a steady increase in resistance rates to ciprofloxacin, ampicillin, ampicillin/sulbactam and ceftriaxone, reaching rates above 60% in recent years. CONCLUSIONS: Despite improved availability of antibiotics for the treatment of salmonellosis in the past decades, mortality due to salmonellosis continues occurring in children and adults, mainly in patients with hematological malignancies and bacteremia. Antibiotic resistance rates have increased significantly over the last 10 years. Public health strategies for the control of this disease should be strengthened, especially in vulnerable populations.

First report of Wilson disease and Bruton agammaglobulinemia in the same patient caused by new mutations in ATP7B and BTK genes.

INTRODUCTION: Wilson disease is characterized by an alteration in copper metabolism that causes its accumulation in different tissues. Its diagnosis is established by the combination of clinical manifestations and paraclinical and genetic studies. Bruton agammaglobulinemia is an X-linked recessive hereditary disease belonging to the group of primary immunodeficiencies and is produced by mutation in the Bruton tyrosine kinase (BTK) gene. CASE REPORT: A 14-year-old Colombian patient with clinical characteristics of Bruton agammaglobulinemia presented with liver disease and clinically and molecularly diagnosed with Wilson disease. DISCUSSION: Bruton agammaglobulinemia and Wilson disease are considered rare diseases because of their low prevalence. We report for the first time a pediatric patient from southwestern Colombia presenting with both entities, and diagnosed clinically and molecularly, an association so far not reported in the literature.

Risk factors and incidence of cytomegalovirus viremia and disease in pediatric patients with allogeneic hematopoietic stem cell transplantation: An 8-year single-center experience in Latin America.

BACKGROUND: Cytomegalovirus infection represents a significant cause of morbidity and mortality after hematopoietic stem cell transplantation. This study aimed to evaluate the incidence of viremia and disease due to cytomegalovirus and the risk factors in pediatric patients with hematopoietic stem cell transplantation in our institution. METHODS: This was a retrospective cohort of patients under 19 years of age who underwent allogeneic hematopoietic stem cell transplantation due to any indication between 2012 and 2019. The analysis included the diagnosis of cytomegalovirus viremia or disease during post-transplant follow-up, evaluation of risk factors, and outcomes. The statistical analysis included univariate and multivariate analyses, and the cumulative incidence of cytomegalovirus viremia was determined by the Kaplan-Meier method using STATA 14 statistical software. RESULTS: A total of 182 transplants were included. At 100 days, the cumulative incidence of cytomegalovirus viremia was 70.5%, and that of cytomegalovirus disease was 4.7%. Overall survival at 2 years was 74%, and event-free survival was 64%. The remaining demographic characteristics were not predictors of infection. There was no association between viremia and relapse or survival of the patients. Higher mortality was noted in cytomegalovirus disease. CONCLUSIONS: During the study period, the incidence of cytomegalovirus disease was similar to that of other pediatric reports, but the incidence of viremia was higher. Pre-emptive therapy has diminished disease rates and death due to infection. Viral load cutoff points should be standardized to guide treatment and avoid myelotoxicity.

Successful engraftment of haploidentical stem cell transplant with post-transplantation cyclophosphamide in a patient with adenosine deaminase deficiency.

BACKGROUND: SCID are characterized by an imbalance in cellular and humoral immunity. Enzyme ADA deficiency represents from 10% to 15% of the SCID. This generates diminished maturation of the cell precursors. Treatments include enzyme replacement therapy, allogenic, or autologous HSCT with gene therapy, with HSCT being of choice when an identical HLA donor exists. CASE REPORT: Male patient, without relevant family antecedents or consanguinity. The patient had multiple infections during the first months of life, evidencing low immunoglobulin levels, with absence of T and B lymphocytes, and natural killer cells. Severe combined immunodeficiencies are considered due to ADA deficiency; management was begun and is derived to our hospital. Admission at 8 months of life, with chronic malnutrition and psychomotor retardation. The HLA studies were conducted without finding an identical donor, taken to HSCT with haploidentical donor. Conditioning regimen with cyclophosphamide, fludarabine, melphalan, and thymoglobulin. This patient received prophylaxis for graft-versus-host disease with cyclophosphamide, cyclosporine, and methotrexate. A 22 months post-transplant, the patient was without immunosuppressants or immunoglobulin, without evidence of graft-versus-host disease or new infections. CONCLUSIONS: The ADA deficiency is an infrequent pathology that can be potentially fatal if adequate treatment is not started. Haploidentical HSCT, using post-transplantation cyclophosphamide, emerges as a viable option with which good results can be achieved and improve the quality of life in patients with no other therapeutic alternatives.

Understanding the Diversity and Distribution of Cyclotides from Plants of Varied Genetic Origin.

Cyclotides are a large family of naturally occurring plant-derived macrocyclic cystine-knot peptides, with more than 400 having been identified in species from the Violaceae, Rubiaceae, Cucurbitaceae, Fabaceae, and Solanaceae families. Nevertheless, their specialized distribution within the plant kingdom remains poorly understood. In this study, the diversity of cyclotides was explored through the screening of 197 plants belonging to 43 different families. In total, 28 cyclotides were sequenced from 15 plant species, one of which belonged to the Rubiaceae and 14 to the Violaceae. Every Violaceae species screened contained cyclotides, but they were only sparsely represented in Rubiaceae and nonexistent in other families. The study thus supports the hypothesis that cyclotides are ubiquitous in the Violaceae, and it adds to the list of plants found to express kalata S and cycloviolacin O12. Finally, previous studies suggested the existence of cyclotide isoforms with either an Asn or an Asp at the C-terminal processing site of the cyclotide domain within the precursor proteins. Here we found that despite the discovery of a few cyclotides genuinely containing an Asp in loop 6 as evidenced by gene sequencing, deamidation of Asn during enzymatic digestion resulted in the artifactual presence of Asp isoforms. This result is consistent with studies suggesting that peptides can undergo deamidation after being subjected to external factors, including pH, temperature, and enzymatic digestion.

Serotype distribution, clinical characteristics, and antimicrobial resistance of pediatric invasive pneumococcal disease in Colombia during PCV10 mass vaccination (2017-2022).

Introduction: Invasive Pneumococcal Disease (IPD) causes significant morbidity and mortality in children under 5 y. Colombia introduced PCV10 vaccination in 2012, and the Neumocolombia network has been monitoring IPD in pediatric patients since 2008. Materials and methods: This study is a secondary analysis of a prospective cohort involving pediatric patients with IPD admitted to 17 hospitals in Colombia, from January 1st, 2017, to December 31st, 2022. We present data on serotypes (Spn), clinical characteristics, and resistance patterns. Results: We report 530 patients, 215 (40.5%) were younger than 24 months. Among these, 344 cases (64.7%) presented with pneumonia, 95 (17.9%) with primary bacteremia, 53 (10%) with meningitis, 6 (1.1%) had pneumonia and meningitis, and 32 (6%) had other IPD diagnosis. The median hospital stay was 12 days (RIQ 8-14 days), and 268 (50.6%) were admitted to the ICU, of whom 60 (11.3%) died. Serotyping was performed in 298 (56.1%). The most frequent serotypes were Spn19A (51.3%), Spn6C (7.7%), Spn3 (6.7%), Spn6A (3.6%), and Spn14 (3.6%). Of 495 (93%) isolates with known susceptibility, 46 (9.2%) were meningeal (M) and 449 (90.7%) non-meningeal (NM). Among M isolates, 41.3% showed resistance to penicillin, and 21.7% decreased susceptibility to ceftriaxone. For NM isolates, 28.2% had decreased susceptibility to penicilin, and 24.2% decreased susceptibility to ceftriaxone. Spn19A showed the highest resistant to penicillin at 47% and was linked to multiresistance. Conclusion: The prevalence of PCV10-included serotypes decreased, while serotypes 19A and 6C increased, with Spn19A being associated with multiresistance. These findings had played a crucial role in the decision made by Colombia to modify its immunization schedule by switching to PCV13 in July 2022.

Epidemiological and microbiological characteristics of S. aureus pediatric infections in Colombia 2018-2021, a national multicenter study (Staphylored Colombia).

Background: Staphylococcus aureus infections are a significant cause of morbidity and mortality in pediatric populations worldwide. The Staphylo Research Network conducted an extensive study on pediatric patients across Colombia from 2018 to 2021. The aim of this study was to describe the epidemiological and microbiological characteristics of S. aureus in this patient group. Methods: We analyzed S. aureus isolates from WHONET-reporting centers. An "event" was a positive culture isolation in a previously negative individual after 2 weeks. We studied center characteristics, age distribution, infection type, and antibiotic susceptibilities, comparing methicillin sensitive (MSSA) and resistant S. aureus (MRSA) isolates. Results: Isolates from 20 centers across 7 Colombian cities were included. Most centers (80%) served both adults and children, with 55% offering oncology services and 85% having a PICU. We registered 8,157 S. aureus culture isolations from 5,384 events (3,345 MSSA and 1,961 MRSA) in 4,821 patients, with a median age of 5 years. Blood (26.2%) and skin/soft tissue (18.6%) were the most common infection sources. Most isolates per event remained susceptible to oxacillin (63.2%), clindamycin (94.3%), and TMP-SMX (98.3%). MRSA prevalence varied by city (<0.001), with slightly higher rates observed in exclusively pediatric hospitals. In contrast, the MRSA rate was somewhat lower in centers with Antimicrobial Stewardship Program (ASP). MRSA was predominantly isolated from osteoarticular infections and multiple foci, while MSSA was more frequently associated with recurrent infections compared to MRSA. Conclusions: This is the largest study of pediatric S. aureus infections in Colombia. We found MSSA predominance, but resistance have important regional variations. S. aureus remains susceptible to other commonly used antibiotics such as TMP-SMX and clindamycin. Ongoing monitoring of S. aureus infections is vital for understanding their behavior in children. Prospective studies within the Staphylored LATAM are underway for a more comprehensive clinical and genetic characterization.

Antibacterial and antifungal activities of crude plant extracts from Colombian biodiversity.

On a global scale, people have used plants to treat diseases and infections, and this has raised interest on the plant biodiversity potencial in the search of antimicrobial principles. In this work, 75 crude n-hexanes, dichloromethane and methanol extracts from the aerial parts of 25 plants belonging to four botanical families (Asteraceae, Euphorbiaceae, Rubiaceae and Solanaceae), collected at the Natural Regional Park Ucumari (Risaralda, Colombia), were evaluated for their antibacterial and antifungal activities by the agar well diffusion method. The antibacterial activities were assayed against two Gram-positive bacteria Staphylococcus aureus and Bacillus subtilis, and three Gram-negative ones named, Klebsiella pneumoniae, Escherichia coli and Pseudomonas aeruginosa. In addition, the same plant extracts were tested against the yeast Candida albicans and the fungi Aspergillus fumigatus and Fusarium solani. Overall, the plant extracts examined displayed better bactericide rather than fungicide activities. In general, the best antibacterial activity was showed by the plant extracts from the Rubiaceae family, followed in order by the extracts from the Euphorbiaceae and Solanaceae ones. It is important to emphasize the great activity displayed by the methanol extract of Alchornea coelophylla (Euphorbiaceae) that inhibited four out of five bacteria tested (B. Subtilis, P. aeruginosa, S. aureus and E. coli). Furthermore, the best Minimal Inhibitory Concentration for the extracts with antifungal activities were displayed by the dichloromethane extracts from Acalypha diversifolia and Euphorbia sp (Euphorbiaceae). The most susceptible fungus evaluated was F. Solani since 60% and 20% of the dichloromethane and methanol extracts evaluated inhibited the growth of this phytopathogenic fungus. The antimicrobial activity of the different plant extracts examined in this work could be related to the secondary metabolites contents and their interaction and susceptibility of pathogenic microorganism evaluated.

Experience of Caring as Source of Abductive Reasoning in Nursing: a Pragmatic Vision.

OBJECTIVES: The aim of this reflection article consists in proposing a methodology that makes visible the epistemic practice through abductive reasoning for the generation of knowledge from an experience of caring. For such, the work describes the connections between the science of nursing and inter-modernism, develops the idea of the nursing practice as source of knowledge, and defines the components of abductive reasoning for the practice. Finally, the work presents an academic exercise developed within the framework of the assignment Evaluation of the theory for research and practice in the PhD program in nursing at Universidad Nacional de Colombia on how a theory was developed from a situation of care and its scientific usefulness upon generating in patients a sense of fullness in their health and in nursing professionals, satisfaction with their work.

Epidemiological characteristics and serotype distribution of culture-confirmed pediatric pneumococcal pneumonia before and after PCV 10 introduction, a multicenter study in Bogota, Colombia, 2008-2019.

BACKGROUND: Pneumococcal conjugate vaccines (PCVs) have decreased pneumonia in children. Colombia introduced mass vaccination with PCV10 in 2012. METHODS: Cases of pneumococcal pneumonia from 10 hospitals were included. Two periods were compared: pre-PCV10: 2008-2011 and post-PCV10: 2014-2019. The objective was to compare epidemiological and clinical characteristics before and after PCV10 vaccination. RESULTS: A total of 370 cases were included. Serotypes 1 (15, 11.2%) and 14 (33, 24.6%) were the most frequent in the pre-PCV10 period, with only 4 (3%) cases of serotype 19A and 1 case (0.7%) serotype 3. From the pre-PCV10 period to the post-PCV10 period, cases of serotypes 1 (6, 3.1%) and 14 (1, 7.8%) decreased, while cases of serotypes 19A (58, 30.2%), serotype 3 (32, 16.7%) and 6A (7, 3.6%) increased (p < 0.001); complicated pneumonia (CP) increased significantly (13.4% to 31.8%) (p < 0.001); hospitalizations increased from 8 (5.5-15) to 12 (7-22) days (p < 0.001); and the frequency of PICU admission increased from 32.8% to 51.6% (p = 0.001). The use of ampicillin-sulbactam (0.7% to 24%) and ceftriaxone/clindamycin (0.7% to 5.7%) increased in the post-PCV10 period. The duration of empirical antibiotic treatment was 7 (4-11) days in the pre-PCV10 period and increased to 10 (6-17) days (p < 0.001) in the post-PCV10 period. Lethality showed a slight nonsignificant increase (7.5% vs. 9.9%; p = 0.57) in the post-PCV10 period. CONCLUSIONS: PCV10 significantly decreased cases of serotypes 1 and 14, with an increase in cases of serotypes 19A, 3 and 6A, which were the predominant serotypes and had greater severity (e.g., admission to the PICU, CP and more resistance, with an increase in the use of broad-spectrum antibiotics and longer hospitalization) and subsequently included in PCV13. Current data support national and regional evidence on the importance of replacing PCV10 with a higher valence that includes 19A, such as PCV13, with the aim of reducing circulation, particularly of this serotype.

Antioxidant and antitopoisomerase activities in plant extracts of some Colombian flora from La Marcada Natural Regional Park.

Many plants have been used to treat some diseases and infections since time immemorial, and this potential has been exploited by the pharmaceutical industry in the search of new analgesic, anticarcinogenic and antimicrobial agents, among other active agents. In order to contribute with bioprospection studies on the Colombian flora, 35 extracts from 13 plant species belonging to seven families (Apocynaceae, Cactaceae, Costaceae, Eremolepidaceae, Passifloraceae, Solanaceae and Urticaceae) were collected from La Marcada Natural Regional Park (LMNRP), Colombia. Dichloromethane, n-hexane and aqueous-methanol crude extracts were prepared and evaluated for their activity against Saccharomyces cerevisiae RS322N, R52Y and RS321 strains in the yeast mutant assay and their antioxidant capacity through the DPPH test. The dichloromethane extract from Myriocarpa stipitata (Urticaceae) showed moderate inhibitory activity against the three S. cerevisiae strains tested. The capacity of the dichloromethane extract from M. stipitata to inhibit the enzyme topoisomerase I and to cause DNA damage was inferred from these results. In the DPPH assay, the n-hexane crude extract from Costus sp. (Costaceae) showed good antioxidant activity (48%); in addition, the crude dichloromethane and aqueous-methanol extracts from Rhipsalis micrantha (Cactaceae) showed moderate antioxidant activity with percentage of 29 and 21%, respectively.

Risk factors for postobstructive diuresis in pediatric patients with ureteropelvic junction obstruction, following open pyeloplasty in three high complexity institutions.

INTRODUCTION: Postobstructive diuresis (POD) is a polyuric state in which large quantities of salt and water are eliminated after solving a urinary tract obstruction. These patients are at increased risk of severe dehydration, electrolytic disturbances, hypovolemic shock, and death. Ureteropelvic junction obstruction (UPJO) is the most common etiology of collecting system dilatation in the fetal kidney, and a significant number of patients require pyeloplasty. There are limited data regarding prognostic risk factors for POD in this scenario. OBJECTIVE: To describe possible clinical risk factors for POD in the pediatric population after open pyeloplasty. STUDY DESIGN: This was a retrospective case series study of consecutive patients diagnosed with UPJO at three high complexity centers, managed with open pyeloplasty from 2006 to 2016. Multiple qualitative and quantitative variables possibly associated with POD were included according to the literature review. They were statistically analyzed with STATA 14 software. RESULTS: A total of 88 patients with UPJO following open pyeloplasty were analyzed. Twenty-seven patients (30%) had POD. A tendency to present POD in younger patients was found, with a mean age of 20.2 months vs. 72.3 months. There was also an increased risk of POD in patients with previous diagnosis of tubular acidosis. CONCLUSIONS: There are no data about prognostic clinical risk factors for POD after open pyeloplasty in the pediatric population. Our study corresponds to one of the larger series reported so far. It suggests that younger patients and patients with a previous diagnosis of tubular acidosis could be at greater risk of POD. Consequently, prospective studies are required for validation of our results, and possible impact on patient follow-up.

Alkaloids of Crinum x powellii "Album" (Amaryllidaceae) and their topoisomerase inhibitory activity.

The alkaloids lycorine, 1-O-acetyllycorine and ismine were isolated from the basic dichloromethane-soluble fraction of Crinum x powellii "Albu m" bulbs. The alkaloid structures were established by physical and spectroscopic analyses, including 1D NMR techniques and GC-MS analysis. The three alkaloids are reported for the first time for this hybrid. Additionally, the three alkaloids isolated were tested against a mechanism-based bioassay utilizing genetically engineered mutants of the yeast Saccharomyces cerevisiae strains RAD+, RAD52Y and RS321 where lycorine was the only alkaloid that displayed moderate topoisomerase I inhibitory activity.

Experience of Caring as Source of Abductive Reasoning in Nursing: a Pragmatic Vision / Experiencia de cuidado como fuente del razonamiento abductivo en enfermería: una mirada pragmática / A experiência do cuidado como fonte do raciocínio abdutivo em enfermagem: um olhar pragmático

The aim of this reflection article consists in proposing a methodology that makes visible the epistemic practice through abductive reasoning for the generation of knowledge from an experience of caring. For such, the work describes the connections between the science of nursing and inter-modernism, develops the idea of the nursing practice as source of knowledge, and defines the components of abductive reasoning for the practice. Finally, the work presents an academic exercise developed within the framework of the assignment Evaluation of the theory for research and practice in the PhD program in nursing at Universidad Nacional de Colombia on how a theory was developed from a situation of care and its scientific usefulness upon generating in patients a sense of fullness in their health and in nursing professionals, satisfaction with their work.

El objetivo del presente artículo de reflexión consiste en proponer una metodología que visibilice la práctica epistémica mediante el razonamiento abductivo para la generación de conocimiento a partir de una experiencia de cuidado. Para ello, se describen las conexiones entre la ciencia de enfermería y el intermodernismo, se desarrolla la idea de la práctica de enfermería como fuente de conocimiento y se definen los componentes del razonamiento abductivo para la práctica. Finalmente, se presenta un ejercicio académico desarrollado en el marco de la asignatura Evaluación de la teoría para la investigación y la práctica del programa de Doctorado en Enfermería de la Universidad Nacional de Colombia sobre cómo se desarrolló una teoría a partir de una situación de cuidado y su utilidad científica al generar en el paciente una sensación de plenitud en su salud y en el profesional de enfermería, satisfacción con su labor

O objetivo deste artigo de reflexão é propor uma metodologia que torne visível a prática epistêmica por meio do raciocínio abdutivo para a geração de conhecimento a partir de uma experiência de cuidado. Para tanto, descrevem-se as conexões entre a ciência da enfermagem e o intermodernismo, desenvolve-se a ideia da prática de enfermagem como fonte de conhecimento e define-se os componentes do raciocínio abdutivo para a prática. Por fim, apresenta-se um exercício acadêmico desenvolvido no âmbito da disciplina Avaliação da teoria para pesquisa e prática do programa de Doutorado em Enfermagem da Universidade Nacional da Colômbia sobre como se desenvolveu uma teoria a partir de uma situação de cuidado e sua utilidade científica gerando no paciente uma sensação de plenitude em sua saúde e no profissional de enfermagem, satisfação com seu trabalho

Gender Dysphoria Publication Trends: A Bibliometric Analysis between 1900 and 2018 / Tendencias de publicación sobre disforia de género: Un análisis bibliométrico entre 1900 y 2018

Objective Research on gender dysphoria (GD) has been growing over the last decades with increasing interest in understanding and characterizing the causal relationships between psychological, genetics, hormonal, and sociocultural factors. Changes and acceptance of this condition as non-pathologic have led to significant changes in general perspective and its management over time. Our objective is to carry out a bibliometric analysis to know the publication trends and quality of evidence related to gender dysphoria. Methods A systematic search and critical review of the literature was carried out between January 1900 and December 2018 to perform a bibliometric analysis. Research was done in the following databases: OVID, PubMed, EMBASE, Scopus, Web of Science and Google Scholar. The medical subject headings (MeSh) terms used were: gender dysphoria; and surgery and psychology. The results were plotted using the VOSviewer version 1.6.8. Statistical analyses were performed with the IBM SPSS, Version 25.0. Results A total of 1,239 manuscripts were identified, out of which 1,041 were selected. The average number of cited times per year per manuscript is 1.84 (interquartile range [IQR] 0-2.33). The average impact index was 47.8 (IQR 20-111.6). The median of total citations per manuscript was 3 (IQR 0-33.1), and the highest number of citations per manuscript was 484. Most publications focus on the psychological aspects of GD, and there is a significant amount of manuscripts related to social and anthropological issues. Most articles have a low level of scientific evidence. Conclusion There is a great amount of published literature on GD; however, there is a significant level of disagreement in many respects on this topic. Regarding surgical gender-affirmation, there is a lack of information supported by high level of evidence to uphold the emerging expansion of medical practices.

Objetivo La investigación sobre la disforia de género (DG) ha crecido en las últimas décadas con un interés creciente por comprender y caracterizar las relaciones causales entre factores psicológicos, genéticos, hormonales y socioculturales. La aceptación de esta condición como no patológica ha llevado a cambios significativos en la perspectiva general y su manejo a lo largo del tiempo. Nuestro objetivo es realizar un análisis bibliométrico para evaluar las tendencias de publicación y la calidad de evidencias relacionadas con la disforia de género. Métodos Se realizó una búsqueda sistemática y revisión crítica de la literatura entre enero de 1900 y diciembre de 2018 para hacer un análisis bibliométrico. Se utilizaron los criterios de los Ítems de Informe Preferido para Revisiones Sistemáticas y Metaanálisis (Preferred Reporting Items for Systematic Reviews and Meta-analysis, PRISMA, en inglés), y la investigación se realizó en las siguientes bases de datos: OVID, PubMed, EMBASE, Scopus, Web of Science y Google Scholar. Los términos de encabezados de temas médicos (medical subject headings, MeSh, en inglés) utilizados fueron: disforia de género; y cirugía y psicología. Los resultados se trazaron utilizando VOSviewer, versión 1.6.8. Los análisis estadísticos se realizaron con el IBM SPSS, versión 25.0. Resultados Se identificaron un total de 1.239 manuscritos, y se seleccionaron 1.041. El número promedio de citas por año por manuscrito fue de 1,84 (rango intercuartil [RIC]: 0­2,33). El índice de impacto promedio fue de 47,8 (RIC: 20­111,6). La mediana del total de citas por manuscrito fue de 3 (RIC: 0­33.1), y el mayor número de citas por manuscrito fue de 484. La mayoría de las publicaciones se centran en los aspectos psicológicos de la DG, y hay una cantidad significativa de manuscritos relacionados con temas sociales y antropológicos. La mayoría de los artículos tienen un bajo nivel de evidencia científica. Conclusión Existe una gran cantidad de literatura publicada sobre disforia de género; sin embargo, existe un nivel significativo de desacuerdo en muchos aspectos sobre este tema. Con respecto a la afirmación quirúrgica, hace falta información respaldada por un alto nivel de evidencia que argumente la expansión emergente de las prácticas médicas.

Primary Mediastinal Pure Seminomatous Germ Cell Tumor (Germinoma) as a Rare Cause of Precocious Puberty in a 9-Year-Old Patient.

Less than 5%-7% of germ cell tumors are extragonadal, with the central nervous system being the most common location in children, followed by retroperitoneum and mediastinum. Only 10% of mediastinal tumors are malignant and one-third of these are pure seminomas (germinomas). We report the case of a 9-year-old boy with development of secondary sexual characteristics. Beta-human chorionic gonadotropin was elevated and a mediastinal mass was found. Final histology showed a pure seminomatous germ cell tumor. To our knowledge, this is the first report of a boy with precocious puberty secondary to a mediastinal germinoma.

Creation of a Pilot Surgical Program for the Comprehensive Management of Patients with Congenital Urological Malformations / Creación de un programa quirúrgico piloto para el manejo integral de pacientes con malformaciones urológicas congénitas

Objectives Congenital malformations constitute the first cause of morbidity and mortality in childhood in Latin America. That is why, since 2001, a surveillance system for congenital malformations has been implemented in Bogota - Colombia. However, despite the increase in detection, an impact on treatment has not been achieved. The present study describes our experience with a novel social program focused on congenital urologic disorders. Methods The present manuscript is a retrospective observational study. We reviewed two national databases containing patients with congenital malformations. Patients were actively contacted to verify the status of the malformations. Children in whom the malformation was confirmed were offered a free consultation with a multidisciplinary group. After screening for surgical indications, patients were scheduled for surgery. Results Between November 2018 and December 2019, 60 patients were identified. In total 44, attended the consultation; the remaining did not attend due to financial or travel limitations. The most common condition assessed was hypospadias. In total, 29 patients underwent surgery. The total cost of care was of US$ 5,800. Conclusions Active search improves attention times and reduces the burden of disease. The limitations to be resolved include optimizing the transportation of patients and their families, which is a frequent limitation to access health care.

Objetivos Las malformaciones congénitas corresponden a la principal causa de morbimortalidad en la infancia en América Latina, motivo por el cual desde el 2001 se viene implementando un sistema de vigilancia epidemiológica de malformaciones congénitas en Bogotá, Colombia. Sin embargo, a pesar del aumento en la cobertura del reporte obligatorio, no se ha logrado un impacto sobre su tratamiento. Este estudio busca mostrar nuestra experiencia con un programa integral de pacientes con malformaciones urológicas congénitas. Métodos El presente es un estudio observacional retrospectivo. Los menores con malformaciones congénitas fueron identificados en dos bases de datos nacionales que incluyen pacientes con malformaciones congénitas. Los pacientes reportados fueron contactados telefónicamente para verificar el estado actual de la malformación. A aquellos niños en quienes se les confirmó la malformación, se les ofreció de manera gratuita una consulta con un grupo multidisciplinario. Una vez confirmadas las indicaciones quirúrgicas, fueron llevados a cirugía. Resultados Se identificaron 60 pacientes entre noviembre del 2018 y diciembre de 2019. De los pacientes identificados, 44 acudieron a consulta. Los demás no asistieron por limitaciones económicas. La principal condición valorada fue hipospadias. En total, 29 pacientes fueron llevados a cirugía. El costo total de la atención de estos pacientes fue de 22 millones de pesos colombianos. Conclusiones La búsqueda activa mejora los tiempos de atención y reduce la carga de la enfermedad. Una de las limitaciones aun por resolver es optimizar el transporte de los pacientes y sus familias, que resulta una limitación frecuente para el acceso a la salud.

Validación de la escala "Valoración de relaciones interpersonales enfermera-familia en UCI-VRIEF-UCI" / Validação da escala "Avaliação das relações interpessoais enfermeira-família na UTI-VRIEF-UCI" / Validation of the scale "Assessment of nurse-family interpersonal relationships in ICU-VRIEF-UCI"

Objetivo: determinar las propiedades psicométricas del instrumento "Valoración de relaciones interpersonales enfermera-familia en Unidad de Cuidados Intensivos (VriEF-Uci)". Materiales y método: estudio de tipo instrumental de cinco fases: i) validez de contenido a través de juicio de expertos, ii) validez de constructo implementando análisis facto-rial exploratorio, iii) validez de criterio analizando correlación con instrumento compatible teóricamente, iv) confiabilidad con el índice de correlación por mitades y v) análisis de dificultad/consistencia a través del modelo de Rasch. La muestra del pilotaje fue de 430 familiares de pacientes adultos internados en uci de dos hospitales universitarios. La muestra para el juicio de expertos fue de 7 expertos. Resultados:el VriEF-Uci mostró un índice de concordancia global de 0,96; la validez de constructo determinó que el instrumento es unidimensional con una varianza explicada de 68,6 % para un factor; la validez de criterio evidenció un índice de correlación con el criterio externo de 0,876; la confiabilidad del instrumento es determinada con un índice de confiabilidad por mitades de 0,90. El modelo de Rasch evidenció adecuados niveles de dificultad, lo que se traduce en una alta probabilidad de que los participantes desarrollen adecuadamente el instrumento (residuales cuadráticos medios de 0,99 y de ajuste estadístico estandarizado de -0,1 para ajuste inter-no, y residuales cuadráticos medios de 1,01 y de ajuste estadístico estandarizado de 0,1 para ajuste externo). Conclusiones: las propiedades psicométricas del instrumento VriEF-Uci son adecuadas para la valoración de las relaciones interpersonales entre enfermera y familia en la unidad de cuidados intensivos.

Objetivo: determinar as propriedades psicométricas do instrumento "Avaliação das relações interpessoais enfermeira-família em Unidade de Terapia Intensiva (VriEF-UTi)". Materiais e método: estudo instrumental em cinco fases: i) validade de conteúdo por meio de julgamento de especialistas; ii) validade de construto por meio da implementação de análise fatorial exploratória; iii) validade de critério a partir da análise da correlação com um instrumento teoricamente compatível; iv) confiabilidade com o índice de correlação pela metade e v) análise de dificuldade/consistência por meio do modelo Rasch. A amostrapiloto foi composta por 430 familiares de pacientes adultos internados em UTi de dois hospitais universitários. A amostra para o julgamento do especialista foi de sete especialistas. Resultados: o VriEF-Uci apresentou índice de concordância global de 0,96; a validade de construto determinou que o instrumento é unidimensional com variância explicada de 68,6 % para um fator; a validade de critério evidenciou índice de correlação com o critério externo de 0,876; a confiabilidade do instrumento é determinada com um índice de confiabilidade pela metade de 0,90. O modelo Rasch apresentou níveis de dificuldade adequados, o que se traduz em uma alta probabilidade de os participan-tes desenvolverem adequadamente o instrumento (resíduos quadrados médios de 0,99 e ajuste estatístico padronizado de -0,1 para ajuste inter-no e resíduos quadrados médios de 1,01 e ajuste estatístico padronizado de 0,1 para ajuste externo). Conclusões: as propriedades psicométricas do instrumento Vri EF-Uci são adequadas para avaliar as relações interpessoais entre enfermeiro e família em unidade de terapia intensiva.

Objective: To determine the psychometric properties of the instru-ment "Assessment of nurse-family interpersonal relationships in the Intensive Care Unit (VriEF-icU). "Materiales and method:Five-phase instrumental study: i) content validity through expert judgment, ii) construct validity by implementing exploratory factor analysis, iii) criterion validity analyzing correlation with a theoretically compatible instrument, iv) reliability with the reliability index by halves, and v) analysis of difficulty/consistency through the Rasch model. The pilot sample consisted of 430 relatives of adult patients admitted to the icU of two university hospitals. The sample for the expert judgment was 7 specialists. Results: The VriEF-Uci showed a global concordance index of 0.96; construct validity determined that the instrument is one-dimensional with an explained variance of 68.6% for one factor; criterion validity evidenced a correlation index with the external criterion of 0.876; the reliability of the instrument is determined with a reliability index by halves of 0.90. The Rasch model showed adequate levels of difficulty, which translates into a high probability that participants adequately develop the instrument (mean square residuals of 0.99 and standardized statistical fit of -0.1 for internal fit, and mean square residuals of 1.01 and standardized statistical fit of 0.1 for external fit). Conclusions:The psychometric properties of the VriEF-Uci instrument are suitable for assessing the interpersonal relationships between nurse and family in the intensive care unit.

Tuberculosis musculoesquelética que imita neoplasia de tejidos blandos: A propósito de dos casos / Musculoskeletal Tuberculosis mimicking soft tissue neoplasms: report of two cases

Resumen La tuberculosis (TB) es una de las enfermedades infecciosas con mayor carga de morbimortalidad a nivel mundial,la presentación pulmonar es la forma más común, sin embargo, las manifestaciones extrapulmonares, especialmente las osteoarticulares, pueden ser difíciles de diagnosticar debido a sus síntomas inespecíficos sugestivos de otras entidades como neoplasias o enfermedades infiltrativas, lo que hace de su diagnóstico un reto clínico. Está enfermedad esta asociada a múltiples factores de riesgo como inmunosupresión, contacto cercano con pacientes con tuberculosis, hacinamiento, residir en zona endémica, entre otros. A continuación, se presentan dos casos de pacientes pediátricos sin compromiso inmune que cursaron con cuadros sugestivos de neoplasias musculoesqueleticas, con hallazgos imagenológicos congruentes, pero con estudios microbiológicos positivos para TB.

Abstract Tuberculosis (TB) is one of the infectious diseases with the highest burden of morbidity and mortality worldwide. Pulmonary presentation is the most common, however, extrapulmonary manifestations, especially osteoarticular, can be difficult to diagnose due to their nonspecific symptoms suggestive of other entities such as neoplasms or infiltrative diseases. Tuberculosis is also associated with multiple risk factors, especially immunosuppression, and among others, household contact with patients with tuberculosis or residing in an endemic area. We present two pediatric patients without immunecompromise, with clinical history suggestive of musculoskeletal neoplasms, with congruent imaging findings, but with positive microbiological studies for TB.