Analysis on severity of bronchiolitis in children and related factors of asthma

Objective: To observe the severity of bronchiolitis,incidence of asthma and related factors.Methods: 162 children diagnosed as bronchiolitis from January 2005 to December 2007 were selected by retrospective analysis and clinical follow up method,including 118 children with mild bronchiolitis,44 children with severe bronchiolitis; the incidence of asthma was calculated,the severity of bronchiolitis and related factors of asthma ( prevalence,parental smoking status,family history,living environment) were observed; the relationship between related factors and asthma and degree of correlation were analyzed by logistic regression analysis. Results: 47 children ( 29. 01%) with bronchiolitis converted to asthma among 162 children,18 children ( 40. 91%) with severe bronchiolitis converted to asthma among 44 children,29 children ( 24. 58% ) with mild bronchiolitis converted to asthma among 118 children,there was significant difference ( P 0. 05) ; there was correlation between severe bronchial asthma and passive smoking,children with allergic constitution and family history of asthma ( Pa 0. 01) . Conclusion: The children with severe bronchiolitis are prone to asthma,passive smoking,children with allergic constitution and family history of asthma are high risk factors of occurrence and development of asthma.