Exhaled XXXX in specific challenge tests to assess @entity7446 .

@entity1 @entity32 @entity565 @entity842 @entity7446
Exhaled @entity842 (NO) is a marker of eosinophilic @entity32 of the airway mucosa accompanying changes in the clinical condition of @entity565 . Allergen exposure has been associated with delayed elevation of exhaled NO. The aim of this study was to assess the asthmatic airway @entity32 with exhaled NO measurements during specific bronchial challenge tests with occupational agents. Forty @entity1 with suspected @entity7446 were investigated. Specific bronchial challenge tests were performed with forced expiratory volume in one second or peak expiratory flow follow-up, supplemented by exhaled NO measurements before and 24 h after challenge tests. In active challenges, which induced bronchoconstriction, a significant mean increase of exhaled NO concentration was noted. In @entity1 with a normal or slightly increased (<14.5 parts per billion (ppb)) basal NO level and a late bronchoconstriction, a significant increase in exhaled NO was seen. @entity1 with a high basal NO level (>14.5 ppb) and a significant bronchoconstriction did not show a significant NO elevation. Challenge tests without bronchoconstriction were not associated with a significant elevation of exhaled NO. Exhaled @entity842 measurements can be used to indicate the development of airway @entity32 accompanying late asthmatic reaction after bronchial challenge tests in @entity1 with a normal or slightly increased basal @entity842 concentration.
