The use of exhaled nitric oxide concentration to identify eosinophilic airway inflammation: an observational study in adults with asthma

Abstract

This value of exhaled NO would seem to be the best for identifying significant eosinophilic airway inflammation. It is applicable to a wide range of non-smoking patients with asthma; exhalation flow does not alter the ability of exhaled NO concentration to detect a sputum eosinophilia.