Allergy and asthma proceedings :
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Allergy Asthma Proc · Mar 2007
Multicenter Study Comparative StudyForced oscillometry is applicable to epidemiological settings to detect asthmatic children.
Forced oscillometry (FOT) has been reported as a simple method to detect respiratory resistance (Rrs) changes. The aim of this study was to evaluate FOT capacity to detect children with clinical characteristics of asthma in a school setting. One thousand thirty children, 6-7 years old, were investigated by questionnaire. ⋯ Prick test positivity and significant bronchoconstriction after exercise tests were significantly more frequent in group 1 than in group 2 (77% and 64% versus 8% and 12%, respectively; p < 0.001). In a school setting FOT changes after bronchodilator are able to detect airway obstruction in children with wheezing symptoms. Children with significant FOT variability present more significantly atopy and BHR and therefore more probable asthma.
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Allergy Asthma Proc · Mar 2007
Risk factors for asthma symptoms at school age: an 8-year prospective study.
Childhood recurrent wheezing is a very prevalent heterogeneous clinical entity. An 8-year prospective study was performed to correlate the clinical outcome of recurrent wheezing in the first years of life with prognostic risk factors. A cohort of 308 children with recurrent wheezing, aged <7 years, were enrolled in 1993, studied using a questionnaire, skin-prick tests, and serum total IgE. ⋯ Among the 128 nonatopic children in 1993, 52% developed allergen sensitization. We identified as prognostic risk factors for asthma symptoms personal history of allergic disease, parental asthma, atopy, and late onset of symptoms. In a significant number of children clinical symptoms can occur years before allergen sensitization.