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- W2750200718 abstract "La bronquiolitis aguda (BA) del lactante tiene una evolución grave entre el 6 y el 16% de los casos ingresados. Su patogenia y evolución está relacionada con la respuesta de los linfocitos T. El objetivo del presente estudio es comprobar si la menor respuesta linfocitaria sistémica está relacionada con una peor evolución de la BA en lactantes ingresados. Estudio observacional-analítico retrospectivo de casos-controles anidados en una cohorte de ingresados por BA-VRS en el periodo de octubre del 2010 a marzo del 2015. Se incluyó a aquellos con hemograma en las primeras 48 h de dificultad respiratoria. Se excluyó a los lactantes con patología de base, sobreinfección bacteriana y prematuros ≤ 32 semanas de gestación. La variable principal dicotómica fue ingreso UCIP. Otras variables fueron: sexo, edad, edad posmenstrual, exposición gestacional y posnatal al tabaco, mes de ingreso, tipo de lactancia y días de evolución del distrés respiratorio. Las cifras de linfocitos fueron categorizadas por cuartiles. Se realizó un análisis bivariante con la variable principal y posteriormente regresión logística para analizar factores de confusión. El estudio incluyó a 252 lactantes. El 6,6% (17) precisó UCIP. La diferencia de media ± DE de linfocitos para pacientes ingresados y no ingresados en UCIP fue de 4.044 ± 1.755 y 5.035 ± 1.786, respectivamente (t de Student, p < 0,05). Se encontró asociación entre ingreso UCIP y la cifra de linfocitos < 3.700/ml (Chicuadrado p = 0,019; OR: 3,2), que se mantuvo en la regresión logística con independencia de la edad y del resto de factores estudiados (Wald 4,191 p = 0,041; OR: 3,8). Existe relación entre la linfocitosis < 3.700/ml en los primeros días de la dificultad respiratoria y una peor evolución en lactantes < 12 meses previamente sanos y edad gestacional mayor de 32 semanas con BA-VRS. Acute bronchiolitis (AB) of the infant has a serious outcome in 6-16% of the hospital admitted cases. Its pathogenesis and evolution is related to the response of the T lymphocytes. The objective of the present study is to determine if the lower systemic lymphocytic response is related to a worse outcome of AB in hospitalised infants. Retrospective observational-analytical study of cases-controls nested in a cohort of patients admitted due to RSV-AB between the period from October 2010 to March 2015. Those with a full blood count in the first 48 hours of respiratory distress were included. Infants with underlying disease, bacterial superinfection, and premature infants <32 weeks of gestation were excluded. The main dichotomous variable was PICU admission. Other variables were: gender, age, post-menstrual age, gestational and post-natal tobacco exposure, admission month, type of lactation, and days of onset of respiratory distress. Lymphocyte counts were categorised by quartiles. Bivariate analysis was performed with the main variable and then by logistic regression to analyse confounding factors. The study included 252 infants, of whom 6.6% (17) required PICU admission. The difference in mean ± SD of lymphocytes for patients admitted to and not admitted to PICU was 4,044 ± 1755 and 5,035 ± 1786, respectively (Student-t test, P<.05). An association was found between PICU admission and lymphocyte count <3700/ml (Chi-squared, P=.019; OR: 3.2) and it was found to be maintained in the logistic regression, regardless of age and all other studied factors (Wald 4.191 P=.041, OR: 3.8). A relationship was found between lymphocytosis <3700/ml in the first days of respiratory distress and a worse outcome in previously healthy infants <12 months and gestational age greater than 32 weeks with RSV-AB." @default.
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- W2750200718 date "2018-06-01" @default.
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- W2750200718 title "Menor respuesta linfocitaria en casos graves de bronquiolitis aguda por virus respiratorio sincitial" @default.
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- W2750200718 doi "https://doi.org/10.1016/j.anpedi.2017.07.003" @default.
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