Abordaje neuropsicológico en una unidad pediátrica de daño cerebral adquirido del sistema público de salud / A neuropsychological approach in a paediatric acquired brain injury unit under the public health system

Introducción: El daño cerebral adquirido (DCA) pediátrico provoca dificultades cognitivo/conductuales y altera el curso del desarrollo. La unidad de DCA del Hospital Infantil Universitario Niño Jesús es la primera dentro del sistema público de salud en dar cobertura integral a pacientes y familias.ObjetivoSe pretende mostrar la metodología de trabajo con los niños y sus familias, describir las características clínicas de los pacientes atendidos y los resultados en cuanto a los tratamientos aplicados.Sujetos53 niños entre los tres meses y los 16 años y medio recibieron tratamiento. Las patologías atendidas son tumores cerebrales, accidentes cerebrovasculares, traumatismos craneoencefálicos, daño tras cirugía de la epilepsia e hipoxia.MétodoA todos los pacientes se le realizó una evaluación al ingreso y otra al alta. Los tratamientos se modulan en función de las dificultades y su gravedad, así como de la edad del niño. Las familias son atendidas tanto individualmente como en formato grupal.ResultadosUna mayor edad del niño se asocia con mejor recuperación del nivel cognitivo y menor duración del tratamiento. Las patologías tienen un impacto diferencial en el CI/CD evaluado al inicio de tratamiento, la hipoxia y las encefalitis son las que asocian mayor gravedad. Las puntuaciones al alta del CI/CD, así como las de memoria verbal y atención, mejoraron significativamente respecto a las del ingreso tras el tratamiento neuropsicológico multicomponente.ConclusionesLa atención al DCA debe incluir programas de rehabilitación neuropsicológica y proporcionar soporte emocional a la familia para que pueda participar activamente en la recuperación del niño o adolescente. (AU)

Introduction: Paediatric acquired brain injury (ABI) causes cognitive and behavioural difficulties and alters the course of child development. The ABI unit at Hospital Infantil Universitario Niño Jesús is the first within the public Spanish health system to provide comprehensive coverage to these patients and their families.ObjectiveThis study aims to show the working methodology followed with patients and their families, and to describe the clinical characteristics of the patients treated and the outcomes of treatment.PatientsFifty-three patients aged between three months and 16 and a half years received treatment. The conditions treated were brain tumours, stroke, traumatic brain injury, damage secondary to epilepsy surgery, and hypoxia.MethodsAll patients were evaluated at admission and at discharge. Treatments were adapted to each patient's difficulties and their severity, as well as to the patient's age. Families received individual and group therapy.ResultsOlder age was associated with better cognitive recovery and shorter duration of treatment. Different conditions show differential impact on intelligence quotient and developmental quotient scores at the beginning of treatment, with hypoxia and encephalitis being associated with greatest severity. Intelligence quotient and developmental quotient scores and visual memory and attention scores at discharge improved significantly after the faceted neuropsychological treatment with respect to scores registered at admission.ConclusionsThe care of patients with ABI should include neuropsychological rehabilitation programmes and provide emotional support to the family so that they may actively participate in the recovery of the child or adolescent. (AU)

A neuropsychological approach in a paediatric acquired brain injury unit under the public health system.

INTRODUCTION: Paediatric acquired brain injury (ABI) causes cognitive and behavioural difficulties and alters the course of child development. The ABI unit at Hospital Infantil Universitario Niño Jesús is the first within the public Spanish health system to provide comprehensive coverage to these patients and their families. OBJECTIVE: This study aims to show the working methodology followed with patients and their families, and to describe the clinical characteristics of the patients treated and the outcomes of treatment. PATIENTS: Fifty-three patients aged between 3 months and 16 and a half years received treatment. The conditions treated were brain tumours, stroke, traumatic brain injury, damage secondary to epilepsy surgery, and hypoxia. METHODS: All patients were evaluated at admission and at discharge. Treatments were adapted to each patient's difficulties and their severity, as well as to the patient's age. Families received individual and group therapy. RESULTS: Older age was associated with better cognitive recovery and shorter duration of treatment. Different conditions show differential impact on intelligence quotient and developmental quotient scores at the beginning of treatment, with hypoxia and encephalitis being associated with greatest severity. Intelligence quotient and developmental quotient scores and visual memory and attention scores at discharge improved significantly after the faceted neuropsychological treatment with respect to scores registered at admission. CONCLUSIONS: The care of patients with ABI should include neuropsychological rehabilitation programmes and provide emotional support to the family so that they may actively participate in the recovery of the child or adolescent.

Promoting psychological well-being in preschool children: study protocol for a randomized controlled trial of a mindfulness- and yoga-based socio-emotional learning intervention.

BACKGROUND: Mental health issues in youths have cascading negative effects on school outcomes, professional life, and physical health. Psychological well-being (P-WB) is an important protective factor against mental illness. Preliminary research suggests that mindfulness- and yoga-based socio-emotional learning (SEL) interventions can each have a positive impact on preschoolers P-WB. The objective of this trial is to rigorously evaluate the effect of a 24-week combined mindfulness- and yoga- based SEL intervention in preschool children from a French socio-economically disadvantaged area. METHODS: The P-WB promotion intervention is compared to a wait-list control condition in a cluster randomized controlled trial (RCT). Sixty-four pre-Kindergarten classrooms are randomized to the intervention or control group. Primary outcomes measure self-management capacity and core P-WB components: connection, insight, engagement, and positive relationship. Secondary outcomes include measures of mental health, executive functioning, and school performance. Primary and secondary outcomes are assessed through teacher questionnaires, standardized observations of children in school context, and experimental tasks and by collecting results of the national evaluation at first grade. All children-level outcomes are evaluated at pre-intervention, at the end of the intervention, and 1 year later (follow-up analysis), to the exception of school performance which is evaluated at follow-up only. Intention-to-treat analyses, accounting for clustering within classes, will adopt a random effects linear regression model to examine outcomes for the intervention versus control children. DISCUSSION: This is the first trial to rigorously evaluate a combined mindfulness- and yoga-based P-WB promotion intervention, and the first RCT evaluating a SEL curriculum in French schools. Results may have key implications for P-WB promotion in preschool children. TRIAL REGISTRATION: https://www.drks.de/ DRKS00028623. Retrospectively registered on 30 May 2022.

A study on correlations between precipitation ETCCDI and airborne pollen/fungal spore parameters in the NE Iberian Peninsula.

Precipitation is one of the meteorological variables usually involved in the aerobiological studies, which presents a complex relationship with atmospheric levels of pollen and fungal spores and the temporal characteristics of their seasons. This complexity is due in a large part to rainfall's twofold impact of having, prior to pollination, a positive influence on subsequent pollen production and of contributing, during pollination, to pollen removal from the air through a wash-out effect. To better explore this impact, we place particular emphasis on extreme rainfall by calculating the correlation between airborne pollen and fungal spore parameters and the precipitation indices that the Expert Team on Climate Change Detection and Indices (ETCCDI) proposed for characterising climate extremes. Parameters for twenty-seven pollen and fungal spore taxa measured in six aerobiological stations in the NE Iberian Peninsula have been considered. We have distinguished between annual and winter ETCCDI in order to compare the correlations between extreme rainfall and airborne pollen concentrations and to avoid the wash-out effect as far as possible. Results show a positive influence from an increase in moderately extreme winter rainfall, specifically on subsequent pollen/fungal spore production: the percentage of all possible significant correlations is higher for winter than for annual rainfall. Furthermore, while annual rainfall in this region has nearly the same number of positive as negative correlations, the positive correlations for winter rainfall are more than twice that of the negative ones. The seasonal consideration on rainfall ETCCDI made with the aim to avoid the confounding overlapping of different rainfall impacts has led to more sharpened observations of its positive and negative effects on airborne pollen and fungal spore concentrations.

Multifractal structure of the monthly rainfall regime in Catalonia (NE Spain): Evaluation of the non-linear structural complexity.

The complex non-linear regime of the monthly rainfall in Catalonia (NE Spain) is analyzed by means of the reconstruction fractal theorem and the multifractal detrended fluctuation analysis algorithm. Areas with a notable degree of complex physical mechanisms are detected by using the concepts of persistence (Hurst exponent), complexity (embedding dimension), predictive uncertainty (Lyapunov exponents), loss of memory of the mechanism (Kolmogorov exponent), and the set of multifractal parameters (Hölder exponents, spectral asymmetry, spectral width, and complexity index). Besides these analyses permitting a detailed description of monthly rainfall pattern characteristics, the obtained results should also be relevant for new research studies concerning monthly amounts forecasting at a monthly scale. On one hand, the number of necessary monthly data for autoregressive processes could change with the complexity of the multifractal structure of the monthly rainfall regime. On the other hand, the discrepancies between real monthly amounts and those generated by some autoregressive algorithms could be related to some parameters of the reconstruction fractal theorem, such as the Lyapunov and Kolmogorov exponents.

A neuropsychological approach in a paediatric acquired brain injury unit under the public health system. / Abordaje neuropsicológico en una unidad pediátrica de daño cerebral adquirido del sistema público de salud.

INTRODUCTION: Paediatric acquired brain injury (ABI) causes cognitive and behavioural difficulties and alters the course of child development. The ABI unit at Hospital Infantil Universitario Niño Jesús is the first within the public Spanish health system to provide comprehensive coverage to these patients and their families. OBJECTIVE: This study aims to show the working methodology followed with patients and their families, and to describe the clinical characteristics of the patients treated and the outcomes of treatment. PATIENTS: Fifty-three patients aged between three months and 16 and a half years received treatment. The conditions treated were brain tumours, stroke, traumatic brain injury, damage secondary to epilepsy surgery, and hypoxia. METHODS: All patients were evaluated at admission and at discharge. Treatments were adapted to each patient's difficulties and their severity, as well as to the patient's age. Families received individual and group therapy. RESULTS: Older age was associated with better cognitive recovery and shorter duration of treatment. Different conditions show differential impact on intelligence quotient and developmental quotient scores at the beginning of treatment, with hypoxia and encephalitis being associated with greatest severity. Intelligence quotient and developmental quotient scores and visual memory and attention scores at discharge improved significantly after the faceted neuropsychological treatment with respect to scores registered at admission. CONCLUSIONS: The care of patients with ABI should include neuropsychological rehabilitation programmes and provide emotional support to the family so that they may actively participate in the recovery of the child or adolescent.

[One homeless person out of ten suffers from cognitive disorders: What do we know about these impairments? A systematic review of homeless people's cognition]. / Une personne SDF sur 10 souffre de troubles cognitifs : que sait-on de ces troubles ? Une revue de littérature sur la cognition des personnes SDF.

OBJECTIVES: Homelessness is associated with several issues (psychiatric and neurological disorders, neurodevelopmental difficulties, malnutrition…) which are also risk factors for cognitive disorders. However, little is known about the relationship between the cognition of homeless people and these eventual explicative etiologies. The aim of this work is to complete the results of Depp et al. about cognition in homelessness by proposing a systematic review of the neuropsychological disorders of homeless people associated with an analysis of the etiologies likely to explain these disorders. METHODS: We followed the PRISMA recommendations to build up this work. We analyzed the abstracts of 385 papers found on databases PSYCINFO and PubMed. Twenty-two studies have been selected for respecting our criteria (at least one valid neuropsychological test ; general group of homeless people and not a sub-group of this population ; study published in English). The prevalence quality has been evaluated through the criteria of Loney et al. Cognitive scores and etiological factors have been compared between studies. RESULTS: The 22 studies represent only nine countries. More than half of them are considered as having a poor prevalence quality. In total, 4,256 participants have been evaluated. Their mean age was around 40 years, and 85 % of the participants were men. The results show a prevalence of cognitive disorders (MMSE) in 8.77 % of the sample. The mean IQ was 87.47 and the premorbid IQ 94.59. We also notice possible disorders affecting the episodic memory and the executive functions. Mean scores for short-term memory, speech and visuo-spatial functions are relatively low. None of the studies evaluated the praxia, the gnosia or the social cognition. The heterogeneity of studies and the lack of data did not allow us to give general conclusions about the etiology of these disorders. However, we see that around 40 % of the time subjects had histories of brain injuries and 89 % of childhood trauma. Intellectual disability is found in 49 % of the sample of a single study. Also, 70 % of the homeless population have been diagnosed with substance-related disorders and 65 % with psychiatric disorders. It appears that the only factors correlated with cognitive disorders would be the history of brain injuries and childhood traumas. CONCLUSIONS: We confirm that homeless people often suffer from cognitive difficulties, and some of these difficulties (memory, executive functioning) are severe. Yet the etiology of these disorders remain relatively unknown: even if we observe a high prevalence of psychiatric, substance-related, neurodevelopmental and neurological issues by the homeless population, only a few of them (brain injury history and childhood trauma) seem to be correlated with cognition in homelessness. The potential explicative factors have been too rarely explored to bring a powerful explanation of cognitive disorders in homeless people. Further research needs to be done in order to give a more precise neuropsychological profile of the homeless population and to better understand what the disorders are rooted in. Last but not least, all this research and knowledge should be applied more to the care of homeless people by providing neuropsychological assessment and rehabilitation and by training the team to detect cognitive disorders and to support the person with a cognitive disability.

[Clinical and neuropsychological characteristics in congenital central hypoventilation syndrome]. / Aspectos clinicos y neuropsicologicos del sindrome de hipoventilacion central congenita.

INTRODUCTION: Congenital central hypoventilation syndrome (CCHS) syndrome is a rare disease caused by mutations in the PHOX2B gene. Patients show a reduced response to hypercapnia and hypoxia accompanied by diffuse disturbances of the autonomic nervous system and occasionaly also disturbances in neuroimaging. A specific neuropsychological profile has not been described in children and adolescents with CCHS. CASE REPORTS: We describe three cases (aged between 4 and 19 years) with different profiles of affectation in cognitive and functionality. These profiles are compared with the features described in the literature about neuropsychology in CCHS. CONCLUSIONS: The profile of functional impairment in the CCHS is variable: in case 1, a severe global developmental delay with autistic features and marked functional involvement is described. In case 2, bilateral atrophy of the hippocampus is associated with involvement in social cognition and in executive functions with moderate functional repercussion. Case 3 shows difficulties in some cognitive executive functions (planning and non-verbal fluency), but without functional repercussion. Neuropsychological assessment can help in the clinical management of these patients by determining and guiding the need for rehabilitation treatments.

TITLE: Aspectos clinicos y neuropsicologicos del sindrome de hipoventilacion central congenita.Introduccion. El sindrome de hipoventilacion central congenita (SHCC) es una enfermedad rara producida por mutaciones en el gen PHOX2B. Los pacientes muestran una reducida respuesta a la hipercapnia e hipoxia acompañada de alteraciones difusas del sistema nervioso autonomo y ocasionalmente alteraciones en neuroimagen. No se ha descrito un perfil neuropsicologico especifico en los niños y adolescentes con SHCC. Casos clinicos. Se presentan tres casos (de edades comprendidas entre 4 y 19 años) con diferente perfil de afectacion cognitiva y funcional. Se comparan los perfiles de los tres casos con los hallazgos descritos en la bibliografia sobre neuropsicologia en el SHCC. Conclusiones. El perfil de afectacion funcional en el SHCC es variable: en el caso 1 se describe un grave retraso global en el desarrollo con rasgos autistas y acusadas implicaciones funcionales. En el caso 2, la atrofia bilateral del hipocampo se asocia a deficit en cognicion social y alteraciones en funciones ejecutivas con moderada repercusion funcional. El caso 3 muestra dificultades en algunas funciones ejecutivas cognitivas (planificacion y fluidez no verbal), pero sin repercusion funcional. La evaluacion neuropsicologica puede ayudar en el manejo clinico de estos pacientes determinando y orientando la necesidad de tratamientos rehabilitadores.

Functional surgery in pediatric drug-resistant posterior cortex epilepsy: Electro-clinical findings, cognitive and seizure outcome.

PURPOSE: Epilepsies originated from the occipital, parietal and/or the posterior edge of the temporal lobe are grouped together into posterior cortex epilepsy (PCE). Our objective was firstly to describe electro-clinical and imaging findings in the presurgical evaluation of children with PCE, and secondly to identify potential factors associated with surgical and cognitive outcomes. METHOD: From the total of patients referred to the Epilepsy Monitoring Unit of 'Hospital Universitario Niño Jesús' from 2003 to 2016, 55 had drug-resistant PCE. Different variables obtained from the multimodal presurgical work-up were analyzed among patients achieving seizure freedom after surgery (ILAE class 1) and patients with persistent seizures. Categorical variables were compared with Fishers exact test and numeric variables with t-Student for independent samples, and multiple logistic regression were used to analyze predictive values. RESULTS: Median duration of epilepsy until surgery was 5 years [3-10 years]. Fifty patients showed lesions in the MRI, and 62.5% had concordant MRI-PET corregistration. 37 (67%) patients were operated (lesionectomy in 21 subjects, tailored resection based on intracranial studies in 16), and 23 (62,2%) reached ILAE class 1, with a mean follow-up period of 3.51 [1-12] years. A lower number of basal seizures and antiepileptic drugs, a well-defined lesion on the MRI, an epileptogenic zone (EZ) restricted to the posterior quadrant and the normalization of postsurgical EEGs were associated with seizure freedom (p<0.05). Additionally, 65% of patients had a long-term improvement of cognitive performances. CONCLUSIONS: Epilepsy surgery should be considered in children with drug-resistant PCE, especially in those with a restricted EZ.

Inhibition of serotonin receptor type 1 in acute myeloid leukemia impairs leukemia stem cell functionality: a promising novel therapeutic target.

Acute myeloid leukemia (AML) is a clinically and molecularly heterogeneous neoplasia with poor outcome, organized as a hierarchy initiated and maintained by a sub-population with differentiation and self-renewal capacities called leukemia stem cells (LSCs). Although currently used chemotherapy is capable of initially reducing the tumor burden producing a complete remission, most patients will ultimately relapse and will succumb to their disease. As such, new therapeutic strategies are needed. AML cells differentially expressed serotonin receptor type 1 (HTR1) compared with healthy blood cells and the most primitive hematopoietic fraction; in fact, HTR1B expression on AML patient samples correlated with clinical outcome. Inhibition of HTR1s activated the apoptosis program, induced differentiation and reduced the clonogenic capacity, while minimal effect was observed on healthy blood cells. In vivo regeneration capacity of primary AML samples was disrupted upon inhibition of HTR1. The self-renewal capacity remaining in AML cells upon in vivo treatment was severely reduced as demonstrated by serial transplantation. Thus, treatment with HTR1 antagonists showed antileukemia effect, especially anti-LSC activity while sparing healthy blood cells. Our results highlight the importance of HTR1 in leukemogenesis and LSC survival and identify this receptor family as a new target for therapy in AML with prognostic value.

Inhibition of PKC-dependent extracellular Ca2+ entry contributes to the depression of contractile activity in long-term pressure-overloaded endothelium-denuded rat aortas

We examined the contractile responsiveness of rat thoracic aortas under pressure overload after long-term suprarenal abdominal aortic coarctation (lt-Srac). Endothelium-dependent angiotensin II (ANG II) type 2 receptor (AT2R)-mediated depression of contractions to ANG II has been reported in short-term (1 week) pressure-overloaded rat aortas. Contractility was evaluated in the aortic rings of rats subjected to lt-Srac or sham surgery (Sham) for 8 weeks. ANG I and II levels and AT2R protein expression in the aortas of lt-Srac and Sham rats were also evaluated. lt-Srac attenuated the contractions of ANG II and phenylephrine in the aortas in an endothelium-independent manner. However, lt-Srac did not influence the transient contractions induced in endothelium-denuded aortic rings by ANG II, phenylephrine, or caffeine in Ca2+-free medium or the subsequent tonic constrictions induced by the addition of Ca2+ in the absence of agonists. Thus, the contractions induced by Ca2+ release from intracellular stores and Ca2+ influx through stored-operated channels were not inhibited in the aortas of lt-Srac rats. Potassium-elicited contractions in endothelium-denuded aortic rings of lt-Srac rats remained unaltered compared with control tissues. Consequently, the contractile depression observed in aortic tissues of lt-Srac rats cannot be explained by direct inhibition of voltage-operated Ca2+ channels. Interestingly, 12-O-tetradecanoylphorbol-13-acetate-induced contractions in endothelium-denuded aortic rings of lt-Srac rats were depressed in the presence but not in the absence of extracellular Ca2+. Neither levels of angiotensins nor of AT2R were modified in the aortas after lt-Srac. The results suggest that, in rat thoracic aortas, lt-Srac selectively inhibited protein kinase C-mediated activation of contraction that is dependent on extracellular Ca2+ entry.

Inhibition of PKC-dependent extracellular Ca2+ entry contributes to the depression of contractile activity in long-term pressure-overloaded endothelium-denuded rat aortas.

We examined the contractile responsiveness of rat thoracic aortas under pressure overload after long-term suprarenal abdominal aortic coarctation (lt-Srac). Endothelium-dependent angiotensin II (ANG II) type 2 receptor (AT2R)-mediated depression of contractions to ANG II has been reported in short-term (1 week) pressure-overloaded rat aortas. Contractility was evaluated in the aortic rings of rats subjected to lt-Srac or sham surgery (Sham) for 8 weeks. ANG I and II levels and AT2R protein expression in the aortas of lt-Srac and Sham rats were also evaluated. lt-Srac attenuated the contractions of ANG II and phenylephrine in the aortas in an endothelium-independent manner. However, lt-Srac did not influence the transient contractions induced in endothelium-denuded aortic rings by ANG II, phenylephrine, or caffeine in Ca2+-free medium or the subsequent tonic constrictions induced by the addition of Ca2+ in the absence of agonists. Thus, the contractions induced by Ca2+ release from intracellular stores and Ca2+ influx through stored-operated channels were not inhibited in the aortas of lt-Srac rats. Potassium-elicited contractions in endothelium-denuded aortic rings of lt-Srac rats remained unaltered compared with control tissues. Consequently, the contractile depression observed in aortic tissues of lt-Srac rats cannot be explained by direct inhibition of voltage-operated Ca2+ channels. Interestingly, 12-O-tetradecanoylphorbol-13-acetate-induced contractions in endothelium-denuded aortic rings of lt-Srac rats were depressed in the presence but not in the absence of extracellular Ca2+. Neither levels of angiotensins nor of AT2R were modified in the aortas after lt-Srac. The results suggest that, in rat thoracic aortas, lt-Srac selectively inhibited protein kinase C-mediated activation of contraction that is dependent on extracellular Ca2+ entry.

Intoxicaciones pediátricas atendidas en el Servicio de urgencias de un hospital comarcal / Pediatric intoxications attended in the Emergency Department of a regional hospital

Introducción. Las intoxicaciones son la 5º causa de muerte por lesiones accidentales en la infancia, representando el 0,3-0,4% de los motivos de consulta en los servicios de urgencias. Objetivo. Describir las característica sociodemográficas y clínicas de los pacientes atendidos por intoxicaciones en el servicio de urgencias hospitalario. Métodos. Estudio transversal entre 2006 y 2010, de niños menores de 15 años atendidos por intoxicación por fármacos, productos del hogar, drogas, monóxido de carbono o animales. Se incluyeron variables sociodemográficas y clínicas. Se ha realizado una estadística descriptiva mediante frecuencias y estadístico exacto de Fisher con el paquete estadístico SPSS 16. Resultados. Se incluyeron 281 intoxicaciones. La prevalencia oscila entre el 0,4 y 0,6% de urgencias pediátricas. El 64,1% de las intoxicaciones se produjeron entre 0 y 4 años, con una distribución homogénea por sexo y una asociación significativa entre edad y tipo de tóxico (p<0,001). El 29,2% fueron intoxicaciones farmacológicas, el 22,4% por monóxido de carbono y 17,1 por productos del hogar. El fármaco más frecuente fue el paracetamol (24,4%) seguido de bezodiacepinas (18,3%) y antitusígenos (8,5%). El 60,1% fueron asintomáticos. El 40,9% precisó vía periférica, al 22,5% se administró oxígeno y carbón activado al 14,2%. El 58% fueron dados de alta en menos de 4 horas. Conclusiones. La edad de 0 a 4 años es el período donde se produjeron el mayor número de intoxicaciones tanto por fármacos como por productos del hogar. El fármaco implicado más frecuente fue el paracetamol seguido de benzodiacepinas (AU)

Introduction. Poisoning is the 5th cause of death from unintentional injury n children, accounting for 0.3 to 0.4 % of complaints in the emergency department. Objective. To describe the sociodemographic and clinical characteristics of pediatric patients treated for poisoning in the emergency department of a hospital. Methodology. Cross-sectional study between 2006 and 2010, children under 15 years old treated for poisoning by drugs, household products, drugs, carbon monoxide or animals. We included sociodemographic and clinical variables. Was performed using descriptive statistics and frequencies with Fisher exact statistical confidence level of 95Ç% with SPSS 16. Results. We included 281 poisoning. The prevalence ranges from 0.4 to 0.6% of pediatric emergencies. 84,1% of poisonings occurred between 0 and 4 years, equally distributed by sex and a significant association between age and type of toxic (p<0,001). 29,2% were drug poisonings, 22,4$ carbonmonoxide and 17,1% for household products. In pharmacological drug intoxication was the most frequent paracetamol (24,4%) followed by benzodiazepines (18.3%) and cough medicines (8.5%). The 60,1% were asymptomatic. El 40,9% said peripherally, to 22.4% oxygen was administered to 14,2% activated carbon. 58% of the intoxicated patients were discharged within 4 hours. Conclusions. The age of 0 to 4 years in the period which produced the highest number of poisoning by drugs both as house hold products. The most common drug involved was paracetamol followed by benzodiazepines (AU)

El asesino silencioso: intoxicaciones por monóxido de carbon / The silent killer. Carbón monoxide poisoning

Introducción. El monóxido de carbono (CO) es un contaminante de la atmósfera terrestre y tóxico para el ser humano. Las intoxicaciones por CO están infradiagnosticadas. Objetivo. Describir las característica sociodemográficas. Objetivo. Describir las características sociodemográficas y clínicas de los pacientes atendidos por intoxicación por CO (ICO). Metodología. Estudio transversal entre 2006 y 2010 en el servicio de urgencias de un hospital, en menores de 15 años atendidos por ICO. Se incluyeron variables sociodemográficas y clínicas. Se realizó una estadística descriptiva mediante frecuencias y estadístico exacto de Fisher, mediante SPSS 18. Resultados. Se registraron 63 urgencias por ICO. La prevalencia incrementó del 0,14/1.000 en 2006 al 3,07/1.000 en 2010. La mayoría se presentó en varones (34 niños, 53,9%), entre 0-4 años (37, 58,7%), españoles (28, 58,3%). La causa principal de las ICO fue la incorrecta combustión del carbón (14, 30,2%). La sintomatología que predomina es la neurológica, como cefalea (16, 25,4%), destacando los asintomáticos (23, 36,5%). La carboxihemoglobina fue superior al 10% en un 35,6% de las ICO. 36 niños (57,1%) precisaron tratamiento en cámara hiperbárica. Conclusiones. La clínica de las ICO es muy inespecífica, similar a cuadros virales y síntomas neurológicos sin causa aparente y afecta a diversos miembros de una familia, sobre todo en invierno (AU)

Introduction. Carbon monoxide (CO) is a contaminant of the Earth´s atmosphere and toxic to humans. The incidence of CO poisoning (COP) is underdiagnosed. Objectives. To describe the sociodemographic and clinical characteristics of patients treated for CO poisoning (COP). Methodology. Cross-sectional study between 2006 and 2010 in the emergency room of a local hospital in under 15 attended by COP. We included sociodemographic and clinical variables. Descriptive statistics were performed using frequencies and Fisher exact test, using SPSS 18. Results. There were 63 emergency COP, each corresponding to a different child. The increased prevalence of 0,14/1,000 in 2006 to 3,07/1.000 in 2010. Most occurred in males (34, 53,9%), 0-4 years (37, 58,7%), Spanish (28, 58,3%). The main cause of COP was the incorrect burning coal (14, 30,2%). The predominant symptoms are neurological, such as headache (16, 25,4%), highlighting the asymptomatic (23, 36,5%). Carboxyhemoglobin was above 10% in 35,6% of the COP. 36 children (57,1%) required treatment in a hyperbaric chamber. Conclusion. The clinic of the COP is very nonspecific, similar to viral conditions and unexplained neurological symptoms and affects several members of a family, especially in winter (AU)

[Relapse in schizophrenia: an exploratory study of the joint conceptions of patients, parents and caregivers]. / Regards croisés sur les signes précoces de rechute des sujets schizophrènes.

INTRODUCTION: The question of the course of schizophrenia relapses, is of considerable interest in different clinical and social areas such as prognosis, quality of life, therapeutic relationship, psychoeducation, rehabilitation and so on. The more the schizophrenic relapses, the higher the level of handicap. Although there is a widespread agreement that it is essential to detect early signs of relapses in order to prevent them, there still remain theoretical and methodological difficulties in identifying these signs because they are personal, heterogeneous and not always specific to psychosis. That is why the notion of "relapse signature" seems relevant by taking into account differentiated and personal assessment of early signs of relapse. This implies the consideration of the different visions of relapse given by patients, parents and caregivers. OBJECTIVE: We propose a qualitative study of the joint appraisal of patients, patients' parents and medical staff. The aim of this study is to regroup the expertises in order to further our understanding of the early signs of relapse. We assume that patients and parents are able to describe signs that are not considered as pathological symptoms, but refer to a personal manner of initiating the relapse process. This should then help in designing early intervention and provide reinforced therapeutic alliance and more positive responses to psychoeducation programs. METHOD: We have interviewed 30 subjects divided in three groups: 10 schizophrenic patients, 10 caregivers (including physicians, psychologists and nurses) and 10 parents of schizophrenics. The patients met the following criteria: patients with a diagnosis of schizophrenia (DSM IV criteria), under neuroleptic treatment, and stabilized. The mean duration of illness was 15 years. The patients as well as caregivers were recruited in two external hospital structures. All the subjects gave their written consent for this study and its methods. We did not recruit parents who were not living with their schizophrenic child or who did not see or have frequent contact with him or her for this study. We conducted a semistructured interview and analysed the transcripts of the narratives provided by our three groups on the definition of relapse and early signs of relapse. Recorded interviews were processed using the Alceste Method, a computer program of textual analysis that identifies the word patterns most frequently used by the subjects. Alceste creates classes of words using a hierarchical descending classification. The description of each class is presented in the form of a word list (with the value of the word's Chi(2) association in this class). We assessed the awareness of problems using the 8-Q. RESULTS: The three groups described relapses as a distressed, even traumatic experience. This experience is shared by the patients' siblings who sometimes mention violent situations and difficulties at home. The analysis showed that each group uses a compartmentalized universe of speech. This raises the question of the communication and the sharing of information between the different groups. Parents who didn't live the relapse of their children and the caregivers gave prepsychotic or psychotic symptoms of relapse. Conversely, parents who had lived relapse(s) of their children gave nonspecific and very personalized signs of relapse (e.g., "When she relapses, our daughter eats much more cheese than usually"). The patients with a low level of awareness of his/her problem were able to describe early signs of relapse. They described mood and sleep disturbances. This is an unexpected result and calls for a debate on the need or not to have good insight in order to follow a psychoeducation program. CONCLUSION: This study insists on the complementarity of different conceptions of all persons involved in schizophrenic relapse in order to identify as accurately as possible the "relapse signature" of patients. According to us, and in order to promote suitable subjective data to increase insight, compliance and therapeutic alliance, psychoeducation programs should rely on these personal criteria rather than propose systematic programs. Then the relapse signature could be the first step to the appropriation of the course of illness and control of psychotic symptoms by schizophrenic patients.

Vólvulo yeyunal incompleto por linfangioma quístico mesentérico / Partial jejunal volvulus due to a mesenteric cystic lymphangioma

Los quistes mesentéricos son tumoraciones benignas poco frecuentes entre las que se encuentran los linfangiomas. Su presentación clínica es variable y pueden producir síntomas agudos debido a complicaciones. Se diagnostican sobre todo en edad pediátrica y su pronóstico, tras exéresis completa, suele ser excelente. Presentamos el caso de una paciente de 15 años con dolor abdominal postprandial y palpación de masa blanda en hipogastrio. Los estudios radiológicos mostraron una gran masa polilobulada de contenido quístico que englobaba un asa de yeyuno con volvulación incompleta. El tratamiento fue la exéresis del quiste y del asa de yeyuno y el diagnóstico anatomopatológico fue de linfangiomaquístico mesentérico. La paciente está asintomática después de más de 3 años de la intervención (AU)

Mesenteric cysts are unusual benign tumours thatinclude lymphangioma. Their clinical presentation is variable and acute symptoms can be produced due to complications. This tumour appears especially in childhood, and its prognosis after surgical removal is excellent. We present the case of a 15 year old female patient with symptoms of postprandial abdominal pain and palpation of smooth mass in hypogastrium. Radiological studies showed a big polilobular mass of cystic substance that included a portion of jejune within complete volvulus. The treatment was the removal of the cyst and a je junal portion and the pathological diagnosis was mesenteric cyst lymphangioma. The patient is asymptomatic more than three years after the intervention (AU)

Preclinical assessment of the neutralizing capacity of antivenoms produced in six Latin American countries against medically-relevant Bothrops snake venoms.

Species of the genus Bothrops induce the vast majority of snakebite envenomings in Latin America. A preclinical study was performed in the context of a regional network of public laboratories involved in the production, quality control and development of antivenoms in Latin America. The ability of seven polyspecific antivenoms, produced in Argentina, Brazil, Peru, Bolivia, Colombia and Costa Rica, to neutralize lethal, hemorrhagic, coagulant, defibrinogenating and myotoxic activities of the venoms of Bothrops neuwiedi (diporus) (Argentina), Bothrops jararaca (Brazil), B. neuwiedi (mattogrossensis) (Bolivia), Bothrops atrox (Peru and Colombia) and Bothrops asper (Costa Rica) was assessed using standard laboratory tests. Despite differences in the venom mixtures used in the immunization of animals for the production of these antivenoms, a pattern of extensive cross-neutralization was observed between these antivenoms and all the venoms tested, with quantitative differences in the values of effective doses. This study reveals the capacity of these antivenoms to neutralize, in preclinical tests, homologous and heterologous Bothrops venoms in Central and South America, and also highlight quantitative differences in the values of Median Effective Doses (ED50s) between the various antivenoms.

[Partial jejunal volvulus due to a mesenteric cystic lymphangioma]. / Vólvulo yeyunal incompleto por linfangioma quístico mesentérico.

Mesenteric cysts are unusual benign tumours that include lymphangioma. Their clinical presentation is variable and acute symptoms can be produced due to complications. This tumour appears especially in childhood, and its prognosis after surgical removal is excellent. We present the case of a 15 year old female patient with symptoms of postprandial abdominal pain and palpation of smooth mass in hypogastrium. Radiological studies showed a big polilobular mass of cystic substance that included a portion of jejune with incomplete volvulus. The treatment was the removal of the cyst and a jejunal portion and the pathological diagnosis was mesenteric cyst lymphangioma. The patient is asymptomatic more than three years after the intervention.

[Detection, isolation and characterization of Shiga toxin-producing Escherichia coli (STEC) in fresh ground beef from butcher shops in Concepción, Tucumán Province]. / Detección, aislamiento y caracterización de Escherichia coli productor de toxina Shiga a partir de carne molida fresca proveniente de carnicerías de Concepción, provincia de Tucumán.

Shiga toxin-producing Escherichia coli is an emerging foodborne pathogen. There are many STEC serotypes associated with human diseases, being the O157:H7 serotype the most prevalent. Ground beef is the main transmission vehicle. In Concepción city, Tucumán Province, between September and December 2004, two hemolytic uremic syndrome (HUS) cases were diagnosed. The main objective of this work was to detect, isolate and characterize STEC O157 and non-O157 strains in fresh ground beef. Between September and December 2004, 53 fresh ground beef samples were collected from butcher shops in Concepción city. The USDA-FSIS (2002) methodology was used for detection, isolation and characterization of STEC O157:H7. Two PCR techniques for E. coli non-O157 detection and a previous intra-laboratory validated methodology for the isolation and characterization of these strains were used. The stx2 gen was identified in seven samples and the rfbO157 gene also in four of them. However, only one E. coli O157:H7 strain, biotype C, carrying the eae, stx2 and ehxA genes, was isolated. The present study shows the importance of implementing techniques for the detection of this emerging pathogen in meat samples.