Global and cell type-specific immunological hallmarks of severe dengue progression identified via a systems immunology approach.

Severe dengue (SD) is a major cause of morbidity and mortality. To define dengue virus (DENV) target cells and immunological hallmarks of SD progression in children's blood, we integrated two single-cell approaches capturing cellular and viral elements: virus-inclusive single-cell RNA sequencing (viscRNA-Seq 2) and targeted proteomics with secretome analysis and functional assays. Beyond myeloid cells, in natural infection, B cells harbor replicating DENV capable of infecting permissive cells. Alterations in cell type abundance, gene and protein expression and secretion as well as cell-cell communications point towards increased immune cell migration and inflammation in SD progressors. Concurrently, antigen-presenting cells from SD progressors demonstrate intact uptake yet impaired interferon response and antigen processing and presentation signatures, which are partly modulated by DENV. Increased activation, regulation and exhaustion of effector responses and expansion of HLA-DR-expressing adaptive-like NK cells also characterize SD progressors. These findings reveal DENV target cells in human blood and provide insight into SD pathogenesis beyond antibody-mediated enhancement.

Use of Self-Efficacy Scale in Mass Casualty Incidents During Drill Exercises.

INTRODUCTION: Medical First Responders (MFRs) in the emergency department SUMMA 112 are tasked with handling the initial management of Mass Casualty Incidents (MCI) and building response capabilities. Training plays a crucial role in preparing these responders for effective disaster management. Yet, evaluating the impact of such training poses challenges since true competency can only be proven amid a major event. As a substitute gauge for training effectiveness, self-efficacy has been suggested. OBJECTIVE: The purpose of this study is to employ a pre- and post-test assessment of changes in perceived self-efficacy among MFRs following an intervention focused on the initial management of MCI. It also aimed to evaluate a self-efficacy instrument for its validity and reliability in this type of training. METHOD: In this study, we used a pretest (time 1 = T1) - post-test (time 2 = T2) design to evaluate how self-efficacy changed after a training intervention with 201 MFRs in initial MCI management. ANOVA within-subjects and between subjects analyses were used. RESULTS: The findings reveal a noteworthy change in self-efficacy before and after training among the 201 participants. This suggests that the training intervention positively affected participants' perceived capabilities to handle complex situations like MCI. CONCLUSION: The results allow us to recommend a training program with theory components together with practical workshops and live, large-scale simulation exercises for the training of medical first responders in MCI, as it significantly increases their perception of the level of self-efficacy for developing competencies associated with disaster response.

Virus-inclusive single-cell RNA sequencing reveals the molecular signature of progression to severe dengue.

Dengue virus (DENV) infection can result in severe complications. However, the understanding of the molecular correlates of severity is limited, partly due to difficulties in defining the peripheral blood mononuclear cells (PBMCs) that contain DENV RNA in vivo. Accordingly, there are currently no biomarkers predictive of progression to severe dengue (SD). Bulk transcriptomics data are difficult to interpret because blood consists of multiple cell types that may react differently to infection. Here, we applied virus-inclusive single-cell RNA-seq approach (viscRNA-Seq) to profile transcriptomes of thousands of single PBMCs derived early in the course of disease from six dengue patients and four healthy controls and to characterize distinct leukocyte subtypes that harbor viral RNA (vRNA). Multiple IFN response genes, particularly MX2 in naive B cells and CD163 in CD14+ CD16+ monocytes, were up-regulated in a cell-specific manner before progression to SD. The majority of vRNA-containing cells in the blood of two patients who progressed to SD were naive IgM B cells expressing the CD69 and CXCR4 receptors and various antiviral genes, followed by monocytes. Bystander, non-vRNA-containing B cells also demonstrated immune activation, and IgG1 plasmablasts from two patients exhibited clonal expansions. Lastly, assembly of the DENV genome sequence revealed diversity at unexpected sites. This study presents a multifaceted molecular elucidation of natural dengue infection in humans with implications for any tissue and viral infection and proposes candidate biomarkers for prediction of SD.

Laryngeal chondromas: Current knowledge and future directions.

Objective: Cartilaginous tumors of the larynx are rare, representing less than 1% of all laryngeal tumors. Chondromas are benign mesenchymal tumors characterized by a slow-paced growth, primarily originated in the cricoid cartilage, followed by the thyroid, arytenoid, and epiglottic cartilages. This scoping review aims to understand the extent of evidence on the epidemiology, clinical characteristics, morbidity, and recurrence of the laryngeal chondroma (LC). Data sources: MEDLINE (Ovid), Embase (Elsevier), Web of Science (Clarivate), Cochrane Central Register of Controlled Trials and Systematic Reviews, Lilacs, Scopus, and Google Scholar databases. Review methods: The scoping review was conducted from 1816 to 2023, for observational studies describing LC. Titles and abstracts were screened for relevance, followed by an evaluation of the full text for eligibility. The data were collected from the qualifying articles, and a narrative summary of the outcomes was prepared. Results: One hundred and nineteen studies met the inclusion criteria. Ninety-four case reports, 22 case series, and 3 cohorts. Two hundred and four participants with a diagnosis of LC were described. Male:female ratio was 2.8:1. The most common localization was the cricoid (113; 47.08%), followed by the thyroid (45; 18.75%), and the arytenoid cartilage (27; 11.25%). Dyspnea (78.85%) and hoarseness (74.28%) were the most reported symptoms. The recurrence rate was 11.25%, and complications were uncommon following the resection. Conclusion: This scoping review found a low-frequency rate over all the cartilaginous laryngeal tumors. Most patients were treated with resection, with a low rate of malignancy conversion. This population has low attributable mortality, morbidity, and recurrence according to the current literature.

Bronchiolitis trends in out-of-hospital urgent care services in the Community of Madrid: Observational study, 2016-2023.

INTRODUCTION: Bronchiolitis poses a considerable challenge during its seasonal peak, overwhelming the material and human resources available to care for affected patients. As a result, interhospital transfers increase exponentially. We did not find any studies analysing the characteristics of patients with bronchiolitis managed in out-of-hospital urgent care (OHUC) services and the impact of the COVID-19 pandemic on the epidemiology of bronchiolitis. OBJECTIVE: To establish the characteristics of paediatric and neonatal patients with acute bronchiolitis (AB) managed in OHUC services in the Community of Madrid and to analyse the impact of the COVID-19 pandemic on the epidemiology of bronchiolitis. METHODS: Retrospective cross-sectional observational and descriptive study carried out in OHUC settings in the Community of Madrid between 2016 and 2023. We included patients with a diagnosis of acute bronchiolitis based on the ICD-10 codes documented in the electronic records of urgent care visits and interhospital transports. We collected data on sociodemographic, clinical and treatment (ventilation and medication) variables. RESULTS: The sample included 630 patients with AB: 343 managed in non-neonatal OHUC (non-neo) services and 287 by the mobile neonatal intensive care unit transport team (NTT). The median age was 3.7 months (IQR, 2.8-4.7) in patients in the non-neo OHUC group and 19 days (IQR, 14.2-23.7) in the NTT group. There was a statistically significant increase in age in the 2020/2021 season in the non-neo OHUC group. The severity score was significantly higher in the NTT group. There was an unusual peak in bronchiolitis cases in June 2021, coinciding with the end of the 4th wave of the COVID-19 pandemic. The incidence of bronchiolitis was highest after the 6th wave of the pandemic (13.5 cases per 10 000 children aged < 2 years). CONCLUSIONS: The median age of paediatric patients with AB managed in OHUC services increased following the end of the lockdown imposed due to the COVID-19 pandemic, which was probably associated with the lack of exposure to the viruses that cause it. This also may explain why the incidence of bronchiolitis was highest in the season following the 6th wave of the pandemic. The severity score was higher in neonatal patients. Epidemiological surveillance, the introduction of protocols and the implementation of an ongoing training programme for non-specialized health care staff involved in the transport of these patients could improve their management.

Magnitude and kinetics of the human immune cell response associated with severe dengue progression by single-cell proteomics.

Approximately 5 million dengue virus-infected patients progress to a potentially life-threatening severe dengue (SD) infection annually. To identify the immune features and temporal dynamics underlying SD progression, we performed deep immune profiling by mass cytometry of PBMCs collected longitudinally from SD progressors (SDp) and uncomplicated dengue (D) patients. While D is characterized by early activation of innate immune responses, in SDp there is rapid expansion and activation of IgG-secreting plasma cells and memory and regulatory T cells. Concurrently, SDp, particularly children, demonstrate increased proinflammatory NK cells, inadequate expansion of CD16+ monocytes, and high expression of the FcγR CD64 on myeloid cells, yet a signature of diminished antigen presentation. Syndrome-specific determinants include suppressed dendritic cell abundance in shock/hemorrhage versus enriched plasma cell expansion in organ impairment. This study reveals uncoordinated immune responses in SDp and provides insights into SD pathogenesis in humans with potential implications for prediction and treatment.

In vitro leishmanicidal activity of imidazole- or pyrazole-based benzo[g]phthalazine derivatives against Leishmania infantum and Leishmania braziliensis species.

OBJECTIVES: To evaluate the in vitro leishmanicidal activity of imidazole-based (1-4) and pyrazole-based (5-6) benzo[g]phthalazine derivatives against Leishmania infantum and Leishmania braziliensis. METHODS: The in vitro activity of compounds 1-6 was assayed on extracellular promastigote and axenic amastigote forms, and on intracellular amastigote forms of the parasites. Infectivity and cytotoxicity tests were performed on J774.2 macrophage cells using meglumine antimoniate (Glucantime) as the reference drug. The mechanisms of action were analysed by iron superoxide dismutase (Fe-SOD) and copper/zinc superoxide dismutase (CuZn-SOD) inhibition, metabolite excretion and transmission electronic microscopy (TEM). RESULTS: Compounds 1-6 were more active and less toxic than meglumine antimoniate. Data on infection rates and amastigote mean numbers showed that 2, 4 and 6 were more active than 1, 3 and 5 in both L. infantum and L. braziliensis. The inhibitory effect of these compounds on the antioxidant enzyme Fe-SOD of promastigote forms of the parasites was remarkable, whereas inhibition of human CuZn-SOD was negligible. The ultrastructural alterations observed in treated promastigote forms confirmed the greater cell damage caused by the most active compounds 2, 4 and 6. The modifications observed by (1)H-NMR in the nature and amounts of catabolites excreted by the parasites after treatment with 1-6 suggested that the catabolic mechanisms could depend on the structure of the side chains linked to the benzo[g]phthalazine moiety. CONCLUSIONS: All the compounds assayed were active in vitro against the two Leishmania species and were less toxic against mammalian cells than the reference drug, but the monosubstituted compounds were significantly more effective and less toxic than their disubstituted counterparts.

Characteristics of patients with immune-mediated inflammatory diseases hospitalized for SARS-CoV-2 infection.

BACKGROUND: Immune-mediated inflammatory diseases (IMID) predispose to a higher infection risk by modifying the host's immune response, which acts as a key factor in SARS-CoV-2 infection resolution. Recent publications show that IMID patients and its treatments do not worsen the outcome of SARS-CoV-2 infection. OBJECTIVES: To describe the clinical characteristics and outcomes of patients with IMID who required hospital admission due to SARS-CoV-2 infection. Secondly, to compare clinical characteristics and outcomes between patients who required hospital admission due to SARS-CoV-2 infection with IMID and those who were not affected. METHODS: We performed an observational retrospective cohort study, including admitted patients with suspected SARS-CoV-2 infection, treated according to medical criteria and local protocols based on the best available scientific evidence. Clinical data were collected from their electronical clinical history. Statistical analysis determined the differences in the characteristics and clinical outcome of the infection in IMID patients. RESULTS: Of a total number of 612 revised patients, 23 had an IMID and 9 of them were positive for the SARS-CoV-2 infection. We did not observe a correlation between these two disorders. There was a higher frequency of obesity and cardiovascular disease among IMID patients, but without statistical significance. The clinical outcomes were no different between hospitalized IMID and non IMID patients. CONCLUSION: IMID and its treatments do not determine the outcome of patients admitted with SARS-CoV-2 infection.

An 8-gene machine learning model improves clinical prediction of severe dengue progression.

BACKGROUND: Each year 3-6 million people develop life-threatening severe dengue (SD). Clinical warning signs for SD manifest late in the disease course and are nonspecific, leading to missed cases and excess hospital burden. Better SD prognostics are urgently needed. METHODS: We integrated 11 public datasets profiling the blood transcriptome of 365 dengue patients of all ages and from seven countries, encompassing biological, clinical, and technical heterogeneity. We performed an iterative multi-cohort analysis to identify differentially expressed genes (DEGs) between non-severe patients and SD progressors. Using only these DEGs, we trained an XGBoost machine learning model on public data to predict progression to SD. All model parameters were "locked" prior to validation in an independent, prospectively enrolled cohort of 377 dengue patients in Colombia. We measured expression of the DEGs in whole blood samples collected upon presentation, prior to SD progression. We then compared the accuracy of the locked XGBoost model and clinical warning signs in predicting SD. RESULTS: We identified eight SD-associated DEGs in the public datasets and built an 8-gene XGBoost model that accurately predicted SD progression in the independent validation cohort with 86.4% (95% CI 68.2-100) sensitivity and 79.7% (95% CI 75.5-83.9) specificity. Given the 5.8% proportion of SD cases in this cohort, the 8-gene model had a positive and negative predictive value (PPV and NPV) of 20.9% (95% CI 16.7-25.6) and 99.0% (95% CI 97.7-100.0), respectively. Compared to clinical warning signs at presentation, which had 77.3% (95% CI 58.3-94.1) sensitivity and 39.7% (95% CI 34.7-44.9) specificity, the 8-gene model led to an 80% reduction in the number needed to predict (NNP) from 25.4 to 5.0. Importantly, the 8-gene model accurately predicted subsequent SD in the first three days post-fever onset and up to three days prior to SD progression. CONCLUSIONS: The 8-gene XGBoost model, trained on heterogeneous public datasets, accurately predicted progression to SD in a large, independent, prospective cohort, including during the early febrile stage when SD prediction remains clinically difficult. The model has potential to be translated to a point-of-care prognostic assay to reduce dengue morbidity and mortality without overwhelming limited healthcare resources.

A Possible Association Between Zika Virus Infection and CDK5RAP2 Mutation.

INTRODUCTION: Flaviviridae family belongs to the Spondweni serocomplex, which is mainly transmitted by vectors from the Aedes genus. Zika virus (ZIKV) is part of this genus. It was initially reported in Brazil in December 2014 as an unknown acute generalized exanthematous disease and was subsequently identified as ZIKV infection. ZIKV became widespread all over Brazil and was linked with potential cases of microcephaly. CASE REPORT: We report a case of a 28-year-old Colombian woman, who came to the Obstetric Department with an assumed conglomerate of fetal abnormalities detected via ultrasonography, which was performed at 29.5 weeks of gestation. The patient presented with multiple abnormalities, which range from a suggested Arnold-Chiari malformation, compromising the lateral and third ventricles, liver calcifications, bilateral pyelocalic dilatations, other brain anomalies, and microcephaly. At 12 weeks of gestation, the vertical transmission of ZIKV was suspected. At 38.6 weeks of gestation, the newborn was delivered, with the weight in the 10th percentile (3,180 g), height in the 10th percentile (48 cm), and cephalic circumference under the 2nd percentile (31 cm). Due to the physical findings, brain magnetic resonance imaging (MRI) was performed, revealing a small and deviated brain stem, narrowing of the posterior fossa, a giant posterior fossa cyst with ventricular dilatation, a severe cortical and white matter thinning, cerebellar vermis with hypoplasia, and superior and lateral displacement of the cerebellum. In addition, hydrocephalus was displayed by the axial sequence, and the cerebral cortex was also compromised with lissencephaly. Schizencephaly was found with left frontal open-lip, and no intracranial calcifications were found. Two novel heterozygous nonsense mutations were identified using whole-exome sequencing, and both are located in exon 8 under the affection of ZIKV congenital syndrome (CZS) that produced a premature stop codon resulting in the truncation of the cyclin-dependent kinase 5 regulatory subunit-associated protein 2 (CDK5RAP2) protein. CONCLUSION: We used molecular and microbiological assessments to report the initial case of vertically transmitted ZIKV infection with congenital syndrome associated with a neurological syndrome, where a mutation in the CDK5RAP2 gene was also identified. The CDK5RAP2 gene encodes a pericentriolar protein that intervenes in microtubule nucleation and centriole attachment. Diallelic mutation has previously been associated with primary microcephaly.

Characteristics of Patients With Immune-Mediated Inflammatory Diseases Hospitalized for SARS-CoV-2 Infection. / Características de pacientes con enfermedades inflamatorias inmunomediadas hospitalizados por infección por SARS-CoV-2.

BACKGROUND: Immune-mediated inflammatory diseases (IMID) predispose to a higher infection risk by modifying the host's immune response, which acts as a key factor in SARS-CoV-2 infection resolution. Recent publications show that IMID patients and its treatments do not worsen the outcome of SARS-CoV-2 infection. OBJECTIVES: To describe the clinical characteristics and outcomes of patients with IMID who required hospital admission due to SARS-CoV-2 infection. Secondly, to compare clinical characteristics and outcomes between patients who required hospital admission due to SARS-CoV-2 infection with IMID and those who were not affected. METHODS: We performed an observational retrospective cohort study, including admitted patients with suspected SARS-CoV-2 infection, treated according to medical criteria and local protocols based on the best available scientific evidence. Clinical data were collected from their electronical clinical history. Statistical analysis determined the differences in the characteristics and clinical outcome of the infection in IMID patients. RESULTS: Of a total number of 612 revised patients, 23 had an IMID and 9 of them were positive for the SARS-CoV-2 infection. We did not observe a correlation between these two disorders. There was a higher frequency of obesity and cardiovascular disease among IMID patients, but without statistical significance. The clinical outcomes were no different between hospitalized IMID and non IMID patients. CONCLUSION: IMID and its treatments do not determine the outcome of patients admitted with SARS-CoV-2 infection.

Acceptability and usability of a mobile application for management and surveillance of vector-borne diseases in Colombia: An implementation study.

BACKGROUND: Vector-borne diseases are a public health problem in Colombia, where dengue virus infection is hyperendemic. The introduction of other arboviruses, such as chikungunya and Zika in the last three years, has aggravated the situation. Mobile health (mHealth) offers new strategies for strengthening health care and surveillance systems promoting the collection, delivery, and access of health information to professionals, researchers, and patients. Assessing mobile application performance has been a challenge in low- and middle-income countries due to the difficulty of implementing these technologies in different clinical settings. In this study, we evaluate the usability and acceptability of a mobile application, FeverDX, as a support tool in the management of patients with febrile syndrome and suspected arboviruses infection by general practitioners from Colombia. METHODS: A pilot implementation study was conducted to evaluate the usability and acceptability of FeverDX using the modified version of the Mobile Application Rating Scale (uMARS). The evaluation form included 25 questions regarding quantity and quality of information, engagement, functionality, aesthetics, impact, and acceptability by healthcare workers. Each item uses a 5-point scale (1-Inadequate, 2-Poor, 3-Acceptable, 4-Good, 5-Excellent). A global score was obtained for the evaluation form test by determining the median scores of each subsection. A descriptive statistical analysis of the data obtained was performed. RESULTS: Between December 2016 and January 2017, a total of 20 general practitioners from the Emergency room and hospitalization areas evaluated FeverDX. Less than half (9/20) of the evaluators had a comprehensive knowledge of the Colombian Ministry of Health's guidelines for the diagnosis and management of arboviruses, and evaluators partially (4/9) or completely (5/9) agreed that the content of the application follows the management guidelines. On uMARS scale, FeverDX excelled regarding impact (median 5; IQR = 5-5), functionality (median 5; IQR = 4.8-5), and information and scientific basis (median 4; IQR = 4-4). FeverDX scored well regarding user feedback (median 4; IQR = 4-4.5), design and aesthetics (median 4; IQR = 4-4.3), and subjective assessment of quality (median 4.5; IQR = 4.3-4.8). CONCLUSIONS: FeverDX, a mobile application, is a novel mHealth strategy to strengthen care processes and facilitate the detection and reporting of notifiable surveillance diseases. It could improve adherence to clinical practice guidelines for the management and prevention of prevalent diseases as arboviruses in healthcare settings. Although this pilot study used a small sample size, FeverDx performed adequately in a simulated emergency consultation. Further implementation studies are needed to increase the reliability of mHealth technologies in different scenarios.

Dengue Virus Infection in Solid Organ Transplant Recipients: A Case Series and Literature Review.

Dengue fever is the most prevalent arbovirus infection among humans, and tropical regions are hyperendemic for this infection. The number of solid organ transplant recipients is continuously increasing, and there are few data regarding the clinical course and outcomes of dengue infection among this population. We report on a retrospective case series of solid organ transplant recipients with dengue virus infection from 2001 to 2018 at Fundación Valle del Lili in Cali, Colombia. A total of 20 patients were included. The median age was 50.5 years (interquartile range [IQR] = 31-63.5 years) and 65% were female. Regarding the clinical course, 75% of patients had at least one warning sign, 45% were managed in the intensive care unit, and 30% had severe dengue. The median of time from transplant and dengue infection was 27.6 months (IQR = 3.82-59.12 months), and three patients had the disease in the first month after the transplant. All patients were discharged, and none of them had graft rejection. Dengue is an endemic disease in our region and represents a threat among solid organ transplantation recipients. All patients had a full recovery after the infection, suggesting that timely and effective management of patients and the access to high-complexity services could prevent fatal cases.

Emerging carbapenem-resistant Aeromonas spp. infections in Cali, Colombia.

INTRODUCTION: Aeromonas species are renowned enteric pathogens with virulence determinants linked to human diseases, such as gastroenteritis, skin, soft-tissue and muscle infections, and septicemia. A recent concern of resistance in this organism has emerged, especially the presence carbapenemases. Herein we describe a case series of emerging carbapenem-resistant Aeromonas species infection in our hospital in Cali, Colombia. MATERIALS AND METHODS: Cases from 2012 to 2018 are reported. Clinical data was abstracted from the clinical charts and laboratory information. Phenotypic detection of resistance was identified using the VITEK®2 system (BioMérieux) and broth microdilution MicroScan WalkAway plus System (Beckman Coulter). CARBA NP-test and multiplex qPCR assay was performed in 11 isolates to identify genes encoding carbapenemases (blaKPC, blaVIM, blaIMP and blaNDM). RESULTS: 21 cases of Aeromonas infection in hospitalized patients with phenotypic resistance to carbapenems were studied. The median age was 50 years, 55% (12/21) were male, and 67% (14/21) were healthcare-associated infections (HAI). Aeromonas hydrophila was the most common species (19/21). Forty-three percent (9/21) of the patients were immunocompromised. The mortality was 33% (7/21), and in patients with bacteremia was 100%. Most patients received empirical treatment with meropenem and failed to this treatment. PCR amplification tests showed negative results for the carbapenemases analyzed. CONCLUSION: Emerging phenotypic carbapenem-resistant infection has been seen in our hospital, most as HAI. High mortality was found, especially in immunocompromised patients and in those who failled empirical treatment with carbapenems. As the main carbapenemases tested were negative, carbapenem-resistant could be attributed to an intrinsic metallo-ß-lactamase, CphA encoded by the cphA gene, possible hyperproduction of ampC ß-lactamase and/or porins expression.

Analysis of organ procurement from non-heart-beating donors over a 10-year period in Madrid. / Análisis de la donación en asistolia no controlada durante 10 años en la Comunidad de Madrid.

OBJECTIVES: The Autonomous Community of Madrid procures the largest number of organs from uncontrolled non-heart-beating donors (NHBD) after circulatory death in Spain. The aim of this study was to analyze the yield of these donations in terms of viable organs procured (category IIa) according to information extracted from the CORE registry of the Spanish National Transplant Organization (ONT) for the Madrid area. METHODS: Retrospective observational study of NHBD data registered between 2007 and 2017, including age, height, weight, body mass index (BMI), emergency care times, method of chest compressions applied (mechanical cardiopump vs manual compressions), and viable organs extracted. RESULTS: A total of 679 circulatory death donors were registered; 458 (67.6%) of them were utilized donors. The median BMI correlated negatively (-0.161) with the number of viable organs extracted (P<.001). The method of applying chest compressions significantly influenced liver viability: only those extracted after mechanical cardiopump compressions were viable for transplantation. Type of compressions did not effect kidney or lung viability. CONCLUSION: Variables to bear in mind as predictors of success in NHBD donation are BMI and type of chest compressions applied.

OBJETIVO: La Comunidad de Madrid es líder en donación en asistolia no controlada (DANC) en España. El objetivo de este trabajo es analizar la rentabilidad de los órganos extraídos válidos de los donantes (categoría IIa) del Registro Nacional Integrado de Información de Donación y Trasplante de la ONT (Registro CORE), correspondientes a esta comunidad. METODO: Estudio observacional retrospectivo entre 2007 y 2017 de las DANC, analizando las variables edad, talla, peso, índice de masa corporal (IMC), tiempos asistenciales, tipo de compresión torácica recibida durante la reanimación cardiopulmonar (cardiocompresor mecánico vs compresión torácica manual) y órganos extraídos válidos. RESULTADOS: Se registraron 679 donantes, de los que fueron donantes efectivos el 67,6% (n = 458). Se observó una correlación negativa (−0,161) entre la mediana del índice de masa corporal y la mediana del número de órganos extraídos válidos (p < 0,001). También se observó una influencia estadísticamente significativa del tipo de cardiocompresión realizada y la viabilidad del hígado, puesto que solo los extraídos tras reanimación con cardiocompresión mecánica fueron válidos para trasplante. CONCLUSIONES: El IMC y el uso de cardiocompresores mecánicos son variables predictoras a tener en cuenta ante una posible DANC.

A 20-Gene Set Predictive of Progression to Severe Dengue.

There is a need to identify biomarkers predictive of severe dengue. Single-cohort transcriptomics has not yielded generalizable results or parsimonious, predictive gene sets. We analyzed blood samples of dengue patients from seven gene expression datasets (446 samples, five countries) using an integrated multi-cohort analysis framework and identified a 20-gene set that predicts progression to severe dengue. We validated the predictive power of this 20-gene set in three retrospective dengue datasets (84 samples, three countries) and a prospective Colombia cohort (34 patients), with an area under the receiver operating characteristic curve of 0.89, 100% sensitivity, and 76% specificity. The 20-gene dengue severity scores declined during the disease course, suggesting an infection-triggered host response. This 20-gene set is strongly associated with the progression to severe dengue and represents a predictive signature, generalizable across ages, host genetic factors, and virus strains, with potential implications for the development of a host response-based dengue prognostic assay.

Evolución de la bronquiolitis en los servicios de urgencias extrahospitalarias de la Comunidad de Madrid: estudio observacional 2016-2023 / Bronchiolitis trends in out-of-hospital urgent care services in the Community of Madrid: Observational study, 2016-2023

Introducción: La bronquiolitis se convierte en todo un reto durante su pico estacional, desbordando los recursos materiales y humanos para poder atender los pacientes afectados. A consecuencia de ello, se multiplican exponencialmente los traslados interhospitalarios. No se han encontrado estudios que hayan analizado las características de los pacientes con bronquiolitis aguda (BA) en los servicios de urgencias extrahospitalarios (SUEH) y la influencia de la pandemia en su epidemiología. Objetivo: Conocer las características de los pacientes pediátricos y neonatales con bronquiolitis en los SUEH de la Comunidad de Madrid y analizar la influencia de la pandemia por COVID-19 en su epidemiología. Material y métodos: Estudio observacional descriptivo, transversal y retrospectivo realizado en los SUEH de la Comunidad de Madrid entre 2016 y 2023. Se incluyeron pacientes con diagnóstico de BA según CIE-10 en las historias clínicas de las asistencias y traslados interhospitalarios. Se registraron variables sociodemográficas, clínicas y de tratamiento (ventilatorio y farmacológico). Resultados: Se incluyeron 630 pacientes con BA: 343 atendidos por los SUEH no especializados en neonatología (no-neo) y 287 por el equipo de transporte neonatal (TN). La mediana de edad fue de 3,7meses [2,8-4,7] en SUEH no-neo y de 19días [14,2-23,7] en TN. Hubo un aumento de la edad estadísticamente significativo en la temporada 2020/2021 en el grupo de SUEH no-neo. La escala de gravedad fue estadísticamente mayor en el grupo de TN. Hubo un pico inusual de casos de bronquiolitis en junio de 2021, coincidiendo con el fin de la 4.ª ola de COVID-19. La incidencia de bronquiolitis, tras la 6.ª ola de pandemia, fue la mayor de todas las temporadas (13,5 casos por cada 10.000 niños ≤2años)...(AU)

Introduction: Bronchiolitis poses a considerable challenge during its seasonal peak, overwhelming the material and human resources available to care for affected patients. As a result, interhospital transfers increase exponentially. We did not find any studies analysing the characteristics of patients with bronchiolitis managed in out-of-hospital urgent care (OHUC) services and the impact of the COVID-19 pandemic on the epidemiology of bronchiolitis. Objective: To establish the characteristics of paediatric and neonatal patients with acute bronchiolitis (AB) managed in OHUC services in the Community of Madrid and to analyse the impact of the COVID-19 pandemic on the epidemiology of bronchiolitis. Methods: Retrospective cross-sectional observational and descriptive study carried out in OHUC settings in the Community of Madrid between 2016 and 2023. We included patients with a diagnosis of acute bronchiolitis based on the ICD-10 codes documented in the electronic records of urgent care visits and interhospital transports. We collected data on sociodemographic, clinical and treatment (ventilation and medication) variables. Results: The sample included 630 patients with AB: 343 managed in non-neonatal OHUC (non-neo) services and 287 by the mobile neonatal intensive care unit transport team (NTT). The median age was 3.7months (IQR: 2.8-4.7) in patients in the non-neo OHUC group and 19days (IQR: 14.2-23.7) in the NTT group. There was a statistically significant increase in age in the 2020/2021 season in the non-neo OHUC group. The severity score was significantly higher in the NTT group. There was an unusual peak in bronchiolitis cases in June 2021, coinciding with the end of the fourth wave of the COVID-19 pandemic. The incidence of bronchiolitis was highest after the sixth wave of the pandemic (13.5 cases per 10,000 children aged <2years)...(AU)

Características de pacientes con enfermedades inflamatorias inmunomediadas hospitalizados por infección por SARS-CoV-2 / Characteristics of Patients With Immune-Mediated Inflammatory Diseases Hospitalized for SARS-CoV-2 Infection

Fundamentos: Las enfermedades inflamatorias inmunomediadas (IMID) predisponen a un aumento del riesgo infeccioso al modificar la respuesta inmune del huésped, que resulta crucial para la resolución de la infección por SARS-CoV-2. Las últimas publicaciones indican que los pacientes con IMID y sus tratamientos de base no empeoran el pronóstico de la infección por SARS-CoV-2. Objetivos: Describir las características clínicas y la evolución de pacientes con IMID que requirieron ingreso hospitalario por infección por SARS-CoV-2. En segundo lugar, comparar las características clínicas y la evolución entre pacientes que requirieron ingreso hospitalario por infección por SARS-CoV-2 con IMID y aquellos que no la presentaban. Métodos: Estudio observacional de cohortes retrospectivo, que incluyó pacientes ingresados por sospecha de SARS-CoV-2, tratados según el criterio médico y los protocolos basados en la evidencia científica. La recogida de datos clínicos se realizó por descarga directa o mediante revisión manual de la historia clínica electrónica. El análisis estadístico determinó las diferencias de características y evolución clínica de la infección en pacientes con IMID. Resultados: De los 612 pacientes revisados, 23 padecían IMID y 9 de ellos fueron diagnosticados de infección por SARS-CoV-2. No se observó correlación entre infección por SARS-CoV-2 e IMID. Los pacientes con IMID presentaban mayor prevalencia de enfermedad cardiovascular y obesidad, aunque no significativamente. Asimismo, los pacientes con IMID no presentaron una evolución clínica durante el ingreso hospitalario diferente respecto al resto de pacientes. Conclusión: Las IMID y los tratamientos de las mismas no determinan el pronóstico del ingreso hospitalario de la infección por SARS-CoV-2.(AU)

Background: Immune-mediated inflammatory diseases (IMID) predispose to a higher infection risk by modifying the host's immune response, which acts as a key factor in SARS-CoV-2 infection resolution. Recent publications show that IMID patients and its treatments do not worsen the outcome of SARS-CoV-2 infection. Objectives: To describe the clinical characteristics and outcomes of patients with IMID who required hospital admission due to SARS-CoV-2 infection. Secondly, to compare clinical characteristics and outcomes between patients who required hospital admission due to SARS-CoV-2 infection with IMID and those who were not affected. Methods: We performed an observational retrospective cohort study, including admitted patients with suspected SARS-CoV-2 infection, treated according to medical criteria and local protocols based on the best available scientific evidence. Clinical data were collected from their electronical clinical history. Statistical analysis determined the differences in the characteristics and clinical outcome of the infection in IMID patients. Results: Of a total number of 612 revised patients, 23 had an IMID and 9 of them were positive for the SARS-CoV-2 infection. We did not observe a correlation between these two disorders. There was a higher frequency of obesity and cardiovascular disease among IMID patients, but without statistical significance. The clinical outcomes were no different between hospitalized IMID and non IMID patients. Conclusion: IMID and its treatments do not determine the outcome of patients admitted with SARS-CoV-2 infection.(AU)

Quiste de duplicación gástrico en paciente adulto: Reporte de caso y revisión de la literatura / Gastric duplication cyst in an adult patient: Case report and literature review

Introducción. Los quistes gástricos de duplicación son malformaciones congénitas muy infrecuentes del tracto gastrointestinal. Se definen como una lesión quística tapizada por epitelio gastrointestinal que comparte una capa de músculo liso con la pared gástrica. Se han propuesto diferentes teorías sobre su patogénesis, sin embargo, los eventos embriológicos que conducen a la malformación no han logrado ser dilucidados. Debido a su localización y presentación clínica, el diagnóstico se realiza con mayor frecuencia durante los primeros años de vida y existen pocos casos reportados en adultos, en quienes el hallazgo suele ser incidental. Caso clínico. Se presenta el caso de una mujer de 65 años quien consultó por dolor abdominal crónico y síntomas digestivos inespecíficos. Por medio de Tomografía Axial Computarizada se evidenció una lesión quística en contacto con el páncreas y la pared gástrica. Se realizó exploración quirúrgica que, junto con los hallazgos histopatológicos, confirmó el diagnosticó de quiste de duplicación gástrico. Discusión. Los quistes de duplicación gástrica son anomalías excepcionales que se localizan más frecuentemente en la curvatura mayor. Su tratamiento es quirúrgico y la confirmación del diagnóstico se realiza mediante la histología

Introduction. Gastric duplication cysts are very rare congenital malformations of the gastrointestinal tract. They are defined as a cystic lesion lined by gastrointestinal epithelium that shares a layer of smooth muscle with the gastric wall. Different theories have been proposed about its pathogenesis, however, the embryological events that lead to the malformation have not been elucidated. Due to its location and clinical presentation, the diagnosis is made more frequently during the first years of life and there are few cases reported in adults, in whom the finding is usually incidental. Clinical case. We present the case of a 65-year-old woman who consulted for chronic abdominal pain and nonspecific digestive symptoms. A CT scan evidenced a cystic lesion in contact with the pancreas and the gastric wall. A surgical exploration was performed which, along with the histopathological findings, confirmed the diagnosis of a gastric duplication cyst. Discussion. Gastric duplication cysts are exceptional anomalies that are more frequently located in the greater curvature. Its treatment is surgical and the confirmation of the diagnosis is made by histology

Análisis de la donación en asistolia no controlada durante 10 años en la Comunidad de Madrid / Analysis of organ procurement from non-heart-beating donors over a 10-year period in Madrid

Objetivo: La Comunidad de Madrid es líder en donación en asistolia no controlada (DANC) en España. El objetivo de este trabajo es analizar la rentabilidad de los órganos extraídos válidos de los donantes (categoría IIa) del Registro Nacional Integrado de Información de Donación y Trasplante de la ONT (Registro CORE), correspondientes a esta comunidad. Método: Estudio observacional retrospectivo entre 2007 y 2017 de las DANC, analizando las variables edad, talla, peso, índice de masa corporal (IMC), tiempos asistenciales, tipo de compresión torácica recibida durante la reanimación cardiopulmonar (cardiocompresor mecánico vs compresión torácica manual) y órganos extraídos válidos. Resultados: Se registraron 679 donantes, de los que fueron donantes efectivos el 67,6% (n = 458). Se observó una correlación negativa (−0,161) entre la mediana del índice de masa corporal y la mediana del número de órganos extraídos válidos (p < 0,001). También se observó una influencia estadísticamente significativa del tipo de cardiocompresión realizada y la viabilidad del hígado, puesto que solo los extraídos tras reanimación con cardiocompresión mecánica fueron válidos para trasplante. Conclusiones: El IMC y el uso de cardiocompresores mecánicos son variables predictoras a tener en cuenta ante una posible DANC

Background and objective: The Autonomous Community of Madrid procures the largest number of organs from uncontrolled non-heart-beating donors (NHBD) after circulatory death in Spain. The aim of this study was to analyze the yield of these donations in terms of viable organs procured (category IIa) according to information extracted from the CORE registry of the Spanish National Transplant Organization (ONT) for the Madrid area. Methods: Retrospective observational study of NHBD data registered between 2007 and 2017, including age, height, weight, body mass index (BMI), emergency care times, method of chest compressions applied (mechanical cardiopump vs manual compressions), and viable organs extracted. Results: A total of 679 circulatory death donors were registered; 458 (67.6%) of them were utilized donors. The median BMI correlated negatively (-0.161) with the number of viable organs extracted (P<.001). The method of applying chest compressions significantly influenced liver viability: only those extracted after mechanical cardiopump compressions were viable for transplantation. Type of compressions did not effect kidney or lung viability. Conclusion: Variables to bear in mind as predictors of success in NHBD donation are BMI and type of chest compressions applied