Invasive mechanical ventilation and biomarkers as predictors of bronchopulmonary dysplasia in preterm infants

Abstract Objectives To evaluate the impact of invasive mechanical ventilation associated with two serum inflammatory cytokines and clinical indicators, on the second day of life, as predictors of bronchopulmonary dysplasia in very low birth weight preterm infants. It was hypothesized that the use of invasive mechanical ventilation in the first hours of life is associated with biomarkers that may predict the chances of preterm infants to develop bronchopulmonary dysplasia. Methods Prospective cohort of 40 preterm infants with gestational age <34 weeks and birth weight <1500 g. The following were analyzed: clinical variables; types of ventilator support used (there is a higher occurrence of bronchopulmonary dysplasia when oxygen supplementation is performed by long periods of invasive mechanical ventilation); hospitalization time; quantification of two cytokines (granulocyte and macrophage colony stimulating factor [GM-CSF] and eotaxin) in blood between 36 and 48 h of life. The preterm infants were divided in two groups: with and without bronchopulmonary dysplasia. Results The GM-CSF levels presented a significantly higher value in the bronchopulmonary dysplasia group (p = 0.002), while eotaxin presented higher levels in the group without bronchopulmonary dysplasia (p = 0.02). The use of continuous invasive mechanical ventilation was associated with increased ratios between GM-CSF and eotaxin (100% sensitivity and 80% specificity; receiver operating characteristic area = 0.9013, CI = 0.7791-1.024, p < 0.0001). Conclusions The duration of invasive mechanical ventilation performed in the first 48 h of life in the very low birth weight infants is a significant clinical predictor of bronchopulmonary dysplasia. The use of continuous invasive mechanical ventilation was associated with increased ratios between GM-CSF and eotaxin, suggesting increased lung injury and consequent progression of the disease.

Características do desenvolvimento neuropsicomotor de lactentes filhos de mães que fizeram uso de drogas durante a gestação / Neuropsychomotor development characteristics of the infants who born from women who used drugs during pregnancy

INTRODUCTION: The use of street drugs during pregnancy, due to their deleterious effects on the health of the infant, may have clinical implications for neuropsychomotor development. OBJECTIVE: The aim of this study was to analyse the characteristics of the neuropsychomotor development of infants born from women who used street drugs during pregnancy. METHODS: A cross-sectional retrospective study was carried out. A total of 51 medical records of infants weighing less than 1.500 grams, who were born in the Hospital de Clínicas da Universidade Federal de Uberlândia (HC/UFU), Minas Gerais, Brazil, from January 2014 to December 2015 were analysed. Using the Development Screening test Denver II at 6 or 9 months of corrected age performed the neuropsychomotor development evaluation. Statistical analysis included quantitative variables that were described by means of average, medians and standard deviation. Groups were compared by the t test or Mann-Whitney test. The associations of the qualitative variables were evaluated by means of the likelihood ratio test. RESULTS: Of the 51 records analysed, 39.2% belong to the group of children of mothers who used street drugs and 60.8% belong to the group of children of nonuser mothers. The neuropsychomotor development was predominantly abnormal and with a significant difference in the general performance classification (p<0.001) and, specifically, in the coarse motor area (p = 0.003) in the group of infants born to mothers who used street drugs. CONCLUSION: Infants of mothers who used street drugs had a greater delay in neuropsychomotor development.

INTRODUÇÃO: O uso de drogas de abuso durante a gestação, em decorrência dos seus efeitos deletérios à saúde do lactante, pode acarretar implicações clínicas para o desenvolvimento neuropsicomotor OBJETIVO: Analisar as características do desenvolvimento neuropsicomotor de lactentes filhos de mães usuárias de drogas de abuso na gestação. MÉTODO: Estudo retrospectivo transversal, que analisou 51 prontuários de lactentes nascidos com peso inferior a 1500 gramas, no Hospital de Clínicas da Universidade Federal de Uberlândia (HC/UFU), entre janeiro de 2014 a dezembro de 2015. A avaliação do desenvolvimento neuropsicomotor foi realizada por meio do teste de Triagem do Desenvolvimento Denver II aos 6 ou 9 meses de idade corrigida. A análise estatística incluiu variáveis quantitativas que foram descritas por meio de médias, medianas e desvios-padrão e grupos comparados pelo teste t ou Mann-Whitney. As associações das variáveis qualitativas foram avaliadas por meio do teste de razão de verossimilhança. RESULTADOS: Dos 51 prontuários analisados, 39,2% pertenciam ao grupo de filhos de mães usuárias de drogas de abuso e 60,8% ao grupo de filhos de mães não usuárias. O desenvolvimento neuropsicomotor foi predominantemente anormal e com diferença significante na classificação geral de desempenho (p<0,001) e, especificamente, na área motor grosseira (p=0,003) do grupo de lactentes filhos de mães usuárias de drogas de abuso. CONCLUSÃO: Lactentes filhos de mães usuárias de drogas de abuso apresentaram maior atraso no desenvolvimento neuropsicomotor.