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  • Title: Lung function at 10 yrs is not improved by early corticosteroid treatment in asthmatic children.
    Author: Lødrup Carlsen KC, Devulapalli CS, Mowinckel P, Håland G, Munthe-Kaas MC, Carlsen KH.
    Journal: Pediatr Allergy Immunol; 2010 Aug; 21(5):814-22. PubMed ID: 19912549.
    Abstract:
    Early intervention with inhaled corticosteroid (ICS) treatment for lung function development in childhood is debated. In view of lung function at birth, we aimed to assess if early use of ICS influenced lung function at 10 yrs of age. A 10-yr follow-up study of 614/802 children (mean age 10.9 +/- 0.9 yrs) with lung function measurements at birth in the Environment and Childhood Asthma study in Oslo included information on ICS treatment (124 with history of asthma) obtained at 2 and 10 yrs by parental interviews. Main outcomes at 10 yrs were the best values (% predicted and Z-scores) of forced expiratory volume in 1 s (FEV(1)) and mid-expiratory flow. The main explanatory factors were never, past or current use of ICS and Z-scores of the tidal flow-volume ratio t(PTEF)/t(E) [time to peak expiratory flow (t(PTEF)) and total expiratory time (t(E))] at birth. ICS treatment, reported by 11.9% of children in the population sample and 71.6% with current asthma, did not significantly influence lung function from birth to 10 yrs. The best values (and Z-scores) of FEV(1), and mid-expiratory flow were similar (p > 0.1) in subjects receiving ICS during and after 0-3 yrs of age, after 3 yrs only or currently compared with steroid naïve children. Almost half of the change in lung function 0-10 yrs was explained by gender, a history of asthma and t(PTEF)/t(E) at birth. ICS treatment for asthma, reported in every eighth child by age 10 yrs, did not significantly improve lung function from birth to 10 yrs.
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