Fractional exhaled nitric oxide for childhood bronchial asthma

In recent years, the prevalence of bronchial asthma(asthma) in children has been rising worldwide.Chronic airway inflammation is the pathological basis of the asthma attack.As a marker of airway inflammation in eosinophilic asthma, fractional exhaled nitric oxide is convenient, non-invasive and fast in the detection.It has unique clinical value in the diagnosis, judgement of severity, evaluation control level, medication guidance and prognosis, which has been widely used in the children′s asthma.Now a review of recent relevant research progress is provided. Key words: Fractional exhaled nitric oxide; Bronchial asthma; Childhood