770 resultados para Very young children
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[Charlotte v. Rothschild] [[Elektronische Ressource]]
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Acute hemorrhagic edema of young children is a rare leukocytoclastic vasculitis that has been reported exclusively in small retrospective cases series, case reports, or quizzes. Considering that retrospective experience deserves confirmation in at least one observational prospective study, we present our experience with 16 children (12 boys and 4 girls, 5-28 months of age) affected by acute hemorrhagic edema. The patients were in good general conditions and with a low-grade or even absent fever. They presented with non-itching red to purpuric targetoid lesions not changing location within hours, with non-pitting and sometimes tender indurative swelling, and without mucous membrane involvement or scratch marks. Signs for articular, abdominal, or kidney involvement were absent. Antinuclear or antineutrophil cytoplasmic autoantibodies were never detected. The cases were managed symptomatically as outpatients and fully resolved within 4 weeks or less. No recurrence or familiarity was noted. CONCLUSION This is the first prospective evaluation of hemorrhagic edema. Our findings emphasize its distinctive tetrad: a well-appearing child; targetoid lesions that do not change location within hours; non-pitting, sometimes tender edema; complete resolution without recurrence. What is known • Acute hemorrhagic edema of young children is considered a benign vasculitis. • There have been ≈100 cases reported in small retrospective case series. What is new • The first prospective evaluation of this condition emphasizes its features: febrile prodrome; well-appearing child; targetoid lesions not changing location within hours; non-pitting, sometimes tender indurative edema; absent extracutaneous involvement; resolution within 3 weeks. • Antineutrophil cytoplasmic autoantibodies do not play a pathogenic role.
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Background: Little research has been conducted to assess the effect of using memory training with school aged children who were born very preterm. This study aimed to determine whether two types of memory training approaches resulted in an improvement of trained functions and/or a generalization of the training effect to non-trained cognitive domains. Methods: Sixty-eight children born very preterm (7-12 years) were randomly allocated to a group undertaking memory strategy training (n=23), working memory training (n=22), or a waiting control group (n=23). Neuropsychological assessment was performed before and immediately after the training or waiting period, and at a six-month follow-up. Results: In both training groups, significant improvement of different memory domains occurred immediately after training (near transfer). Improvement of non-trained arithmetic performance was observed after strategy training (far transfer). At a six-month follow-up assessment, children in both training groups demonstrated better working memory, and their parents rated their memory functions to be better than controls. Performance level before the training was negatively associated with the training gain. Conclusions: These results highlight the importance of cognitive interventions, in particular the teaching of memory strategies, in very preterm-born children at early school age to strengthen cognitive performance and prevent problems at school.
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Autism spectrum disorders (ASDs) are classified as pervasive developmental disorders characterized by social, communicative, and behavioral impairments. According to formal and informal reports, children with ASD present with receptive and expressive language delay. Joint attention (JA: the behavior that occurs when two individuals focus on the same object or event) has been identified as a possible marker of delayed language development in children with ASD. In this study, the JA behaviors in children with ASD were contrasted with initially language-matched typically developing (TYP) children across three visits. Measures of language, the frequency, duration, and source of initiation of JA episodes, and the choice of toy during those episodes, were coded. Across visits and groups, mothers initiated more JA episodes than children; however, typical children also initiated more JA episodes than ASD children at visits 1 and 2. Also, the total duration of typically developing children’s JA episodes was generally longer than that of the ASD children’s, significantly so at Visit 2. Significant associations emerged between children’s vocabulary and two measures of JA: frequency and number of maternal initiations. Teaching parents to incorporate JA training in their interactions with their children may likely help children with ASD acquire language.
Recognition of television images as a developmental milestone in young children: observational study
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El maltrato infantil y el abuso sexual, como tipo de maltrato en la infancia, supone un problema social que ha estado presente a lo largo de la historia, en todos los países, culturas, estratos sociales. El abuso sexual infantil ha presentado dificultades para su definición al no existir un acuerdo único y darse diferencias sobre los criterios definitorios. Las definiciones propuestas han sido múltiples, algunas son más restrictivas, mientras que otras tienen una perspectiva más amplia. Una de las definiciones más ampliamente usada y aceptada internacionalmente ha sido la propuesta por la OMS (2001), al incorporar los criterios de que el menor se encuentra inmerso en actividades o comportamientos para los que no se encuentra preparado ni física ni psicológicamente, sin disponer de la capacidad de consentimiento, transgrediendo la legislación vigente en cada país (Stoltenborgh, Van Ijendoorn, Euser y Bakermans-Kranenbirg, 2011, en Amado, Arce y Herraiz, 2015). En el campo de la investigación social, la mayoría de profesionales hacen uso de los criterios propuestos por Finkelhor y Hotaling (1984), ratificados en España por López (1994). Dichos conceptos han sido el de coerción y la asimetría de edad o diferencias a nivel madurativo, lo que conlleva a una incapacidad a una libre decisión. Dado que el abuso sexual se suele dar en la más estricta intimidad, resulta realmente complicado cuantificar y estimar su prevalencia e incidencia, dada la denominada “cifra negra” de este tipo de situaciones, puesto que parte de los casos no se han denunciado o ni siquiera se han notificado. A pesar de ello, algunos estudios, como el meta-analítico realizado por Pereda, Guilera, Forns y Gómez-Benito (2009), han notificado una prevalencia de entre 7,4% en el caso de los niños y del 19,2% en las niñas...
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Basalts in Hole 648B, located in the rift valley of the Mid-Atlantic Ridge at 23°N in crust estimated to be less than 100,000 years old, are mainly fresh, but small amounts of secondary phases are found on fracture surfaces and in alteration halos within the rocks. The halos are defined by dark bands 1-4 mm thick that have developed parallel to fracture surfaces or pillow margins and which in some cases have migrated some centimeters into the rock. The dark bands are the principal locus of secondary phases. The secondary phases are olive-green and yellow protoceladonites, of composition and structure intermediate between celadonite and iron-rich saponite, red (Mn-poor) to opaque (Mn-rich) iron oxyhydroxides, mixtures of protoceladonite and iron oxyhydroxide, and rare manganese oxides. These phases occur mainly as linings or fillings of open spaces in the basalt within the dark bands. Sulfides and intersertal glass are the only primary phases that can be seen to have been altered. Where dark bands have migrated into the rock, the rock behind the advancing band is almost devoid of secondary phases, implying redissolution. The potassium and magnesium in the secondary phases could have been supplied from ambient seawater. The aluminum in the protoceladonites must have been derived from local reaction of intergranular glass. The source of iron and silica could have been intergranular glass or low temperature mineralizing solutions of the type responsible for the formation of deposits of manganese oxides and iron oxyhydroxides and silicates on the seafloor.
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Mode of access: Internet.
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Mode of access: Internet.