Evolución de un cuadro de hemorragia intracraneal en lactante con trombocitopenia inmune primaria / Evolution of a case of intracraneal hemorrhage in infant with primary immune trombocytopenia

La trombocitopenia inmune primaria (TIP) es una enfermedad hematológica de causa inmunológica que presenta una plaquetopenia inferior a 100 000 plaquetas/mm3 y tiene una incidencia de 4 casos por cada 100 000 habitantes, siendo más prevalente entre los 2 a 6 años de edad. Esta entidad continúa siendo un desafío con respecto a la terapéutica y puede conllevar a complicaciones graves muy difíciles de resolver una vez establecidas.Se presenta el caso de un lactante menor de sexo masculino que curso con por un cuadro de palidez generalizada con aparición súbita de hematoma en mucosa oral, máculas equimóticas y hemorragias puntiformes en toda la superficie corporal. En los exámenes realizados se evidenciaron trombocitopenia y anemia grave, llegando al diagnóstico de trombocitopenia inmune primaria inicialmente manejada con transfusiones y posteriormente con corticoides. A pesar del manejo, el cuadro evolucionó con complicaciones de hemorragia intraparenquimatosa y declino neurológico.

Primary immune thrombocytopenia (PIT) is a hematological disease of immunological cause that has platelet count less than 100 000 platelets / mm3 and has an incidence of 4 cases per 100 000 inhabitants, being more prevalent between 2 and 6 years of age. This entity remains a challenge with regard to therapeutics and can lead to serious complications that are difficult to resolve once established. We report the case of a young male infant who has a generalized pallor with sudden onset of hematoma in the oral mucosa, equimotic macules and punctate hemorrhages throughout the body surface. In the examinations performed thrombocytopenia and severe anemia were evident, arriving at the diagnoses of idiopathic thrombocytopenic purpura initially managed with transfusions and later with corticoids. despite the treatment the case progress whith complications of intraparenchymal hemorrhage accompanied by neurological decline

Krypton separation from ambient air for application in collinear fast beam laser spectroscopy.

A portable apparatus for the separation of krypton from environmental air samples was tested. The apparatus is based on the cryogenic trapping of gases at liquid nitrogen temperature followed by controlled releases at higher temperatures. The setup consists of a liquid nitrogen trap for the removal of H(2)O and CO(2), followed by charcoal-filled coils that sequentially collect and release krypton and other gases providing four stages of gas chromatography to achieve separation and purification of krypton from mainly N(2), O(2), and Ar. Residual reactive gases remaining after the final stage of chromatography are removed with a hot Ti sponge getter. A thermal conductivity detector is used to monitor the characteristic elution times of the various components of condensed gases in the traps during step-wise warming of the traps from liquid nitrogen temperatures to 0 °C, and then to 100 °C. This allows optimizing the switching times of the valves between the stages of gas chromatography so that mainly krypton is selected and loaded to the next stage while exhausting the other gases using a He carrier. A krypton separation efficiency of ~80 % was determined using a quadrupole mass spectrometer.