Bronchial Allergen Challenge in Allergic Children: Continuous Increase of Nitric Oxide in Exhaled Air 72 Hours After Allergen Inhalation Independent of Bronchial Obstruction

Abstract

An increase in FeNO in sensitive subjects starts a few hours later than the decrease in FEV(1). Consequently, measurements of FeNO seem to be useful in long-term monitoring of the allergic reaction triggered by a specific allergen.