Acute viral bronchiolitis and risk of asthma in schoolchildren: analysis of a Brazilian newborn cohort
Journal Title: Jornal de Pediatria - Year 2017, Vol 93, Issue 3
Abstract
Objective To verify whether the occurrence of acute viral bronchiolitis in the first year of life constitutes a risk factor for asthma at age 6 considering a parental history of asthma. Methods Cross-sectional study in a cohort of live births. A standardized questionnaire of the International Study of Asthma and Allergies in Childhood was applied to the mothers to identify asthma in children at the age of 6 years. Acute viral bronchiolitis diagnosis was performed by maternal report of a medical diagnosis and/or presence of symptoms of coryza accompanied by cough, tachypnea, and dyspnea when participants were 3, 6, 9, and 12 months. Socioeconomic, environmental data, parental history of asthma, and data related to pregnancy were collected in the first 72h of life of the newborn and in prospective home visits by trained interviewers. The association between acute viral bronchiolitis and asthma was evaluated by logistic regression analysis and potential modifier effect of parental history was verified by introducing an interaction term into the adjusted logistic regression model. Results Prevalence of acute viral bronchiolitis in the first year of life was 68.6% (461). The occurrence of acute viral bronchiolitis was a risk factor for asthma at 6 years of age in children with parental history of asthma OR: 2.66, 95% CI (1.10–6.40), modifier effect p=0.002. Parental history of asthma OR: 2.07, 95% CI (1.29–3.30) and male gender OR: 1.69, 95% CI, (1.06–2.69) were other identified risk factors for asthma. Conclusion Acute viral bronchiolitis in the first year of life is a risk factor for asthma in children with parental history of asthma.
Authors and Affiliations
Heli Brandão
Keywords
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- DOI 10.1016/j.jped.2016.08.004
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