Background:This study aimed to investigate the risk factors of bronchiolitis obliterans caused by severe adenovirus pneumonia. Methods: The First Affiliated Hospital of Xiamen University in January, 2019 was collected The clinical data of 229 children with severe adenovirus pneumonia from January to January 2020 were divided into obliterative bronchiolitis group (BO group) and non obstructive bronchiolitis group (non BO group) according to the follow-up clinical manifestations and imaging data. The clinical data, laboratory examination and imaging data of the children were retrospectively analyzed. Results: Among 229 children with severe adenovirus pneumonia, 46 cases were in BO group. The number of days of hospitalization, oxygen consumption time, LDH, IL-6, AST, D-dimer and hypoxemia in BO group were significantly higher than those in non BO group; The difference was statistically significant (P < 0.05). Univariate logistic regression analysis showed that there were significant differences in the blood routine neutrophil ratio, platelet level, Oxygen supply time, hospitalization days, AST level, whether there was hypoxemia, timing of using hormone, more than two bacterial feelings were found in the two groups, levels of LDH, albumin and Scope of lung imaging (P < 0.05). Conclusions: The related risk factors of BO caused by severe adenovirus pneumonia were long hospitalization days and oxygen consumption time, elevated platelet levels, AST and LDH levels in laboratory tests, and more than two kinds of bacterial infections, double lung involvement, and hypoxemia. Early use of glucocorticoid had a significant effect on reducing the formation of BO.
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