Background: Respiratory infections are a cause of socio-health concern due to their high mortality and the economic cost. The number of patients from social care centers with respiratory infections requiring hospital admission is increasing in recent decades. The particularities of these patients could influence the evolution of these infections. Aim: To analyze if there are differences respect to mortality between respiratory infections of community origin and those associated with social care centers. Methods: A systematic review was carried out in three databases: Medline, Web of Science and Scopus. Empirical studies, published between 2000 and 2016, were included. Results: The origin of the patients, age and malnutrition were the factors associated with worse prognosis, together with the presence of cardiac or neurological comorbidity. Mortality was higher in patients from social care centers compared to those who came from their home. Conclusion: Health professionals should take into account the origin of the patients in order to give a more personalized care according to the particularities of these patients.

Resumen Introducción: Las infecciones respiratorias son causa de preocupación socio-sanitaria por su elevada mortalidad y el coste económico que conllevan. El número de pacientes procedentes de centros socio-sanitarios con infecciones respiratorias que requieren ingreso hospitalario está aumentando en las últimas décadas. Las particularidades de estos pacientes pueden influir en la evolución de estas infecciones. Objetivo: Analizar si existen diferencias entre las infecciones respiratorias de origen comunitario y las asociadas a cuidados sanitarios respecto a la mortalidad. Material y Métodos: Se realizó una revisión sistemática en tres bases de datos: Medline, Web of Science y Scopus. Se incluyeron estudios empíricos, publicados entre 2000 y 2016. Resultados: La procedencia de los enfermos, la edad y la malnutrición fueron los factores que se asociaron con peor pronóstico, junto con la presencia de co-morbilidad cardiaca o neurológica. La mortalidad fue más elevada en los pacientes procedentes de centros socio-sanitarios respecto a aquellos que procedían de su domicilio. Conclusión: Los profesionales de la salud deberían tener en cuenta la procedencia de los enfermos para dar un cuidado personalizado acorde a las particularidades de estos enfermos.

Nowadays, the Ge-Sb-Te system is studied extensively for use in the field of both electrical and optical non-volatile memories. The key of this application is based on the changes in the physical properties (electrical conductivity or refractive index) of these films as a result of structural transformation between amorphous and crystalline states. Both states are highly stable and it is relatively easy to change between them when they are prepared as thin films. In this work, structural and electrical behaviours with the temperature of thin films with compositions Ge13Sb5Te82, Ge1Sb2Te4, Ge2Sb2Te5, Ge1Sb4Te7 and Sb70Te30 (atomic fraction) were studied. Films were obtained by pulsed laser deposition (PLD) using a pulsed Nd:YAG laser (λ = 355 nm) and they were structurally characterized by X-ray diffraction. Temperature dependence of electrical resistance was studied for these films from room temperature to 520 K at a heating rate about 3 K/min. During crystallization, their electrical resistance falls several orders of magnitude in a narrow temperature range. The electrical conduction activation energies of the amorphous and crystalline states and the crystallization temperature were determined. The crystallization products were characterized by X-ray diffraction. The results were compared with those obtained by other authors.

Abstract Background Dengue virus infection can have different complications; the best known is hemorrhagic dengue fever. However, other effects such as neurological disorders may endanger the lives of patients. Dengue neurological manifestations can be confused with encephalitis symptoms and can lead to cerebral edema and death. Therefore, we consider important in the endemic areas to take into account the diagnosis of dengue encephalitis in patients with neurological disorders, and to request the determination of serology in cerebrospinal fluid for the NS1 antigen test. Case presentation We present the cases of two patients from the state of Morelos, Mexico, with 17 and 14 years of age. Both cases presented a rapid evolution characterized by fever, seizures and neurological deterioration secondary to severe cerebral edema that evolved to cerebral death in both cases. The diagnosis of brain death was confirmed by electroencephalogram in both patients. The two patients were submitted to serology for NS1 that tested positive in both cases. They died between the second and fifth day after admission. Conclusions Retrospective studies have found that up to 4% of the patients have dengue virus infections, which leads us to believe that in endemic areas, this infection should be suspected in cases of encephalic and febrile symptoms. RT-PCR should be performed to identify cases of encephalitis caused by the dengue virus, and early interventions should be performed to attempt to reduce the morbidity and mortality of these cases.