CompletedNot Applicable

Validity of Fractional Exhaled Nitric Oxide and Impulse Oscillometry in Patients With Cough Variant Asthma

China146 participantsStarted 2018-08-12

Plain-language summary

The aim of the research is to evaluate the clinical value of fractional exhaled nitric oxide(FeNO) ,impulse oscillometry(IOS) and mid-expiratory flow (MEF) in patients with cough variant asthma.

Who can participate

Age range18 Years – 65 Years

SexALL

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Inclusion Criteria: age 18-65 years old. Cough as the sole or predominant symptom lasting for at least 8 weeks, with no radiographic evidence of lung diseases. Exclusion Criteria: treatment of any oral corticosteroid in the last 4 weeks, and respiratory tract infection within 8 weeks. smoking (min. 6 months) had asthma or other lung diseases, including obliterative bronchiolitis, bronchiectasis,and cystic fibrosis.

What they're measuring

the value of fractional exhaled nitric oxide(FeNO) in patients with cough variant asthma

Timeframe: at least 4 weeks of treatment

the value of impulse oscillometry(IOS) in patients with cough variant asthma

Timeframe: at least 4 weeks of treatment

Trial details

NCT IDNCT03573284

SponsorZhujiang Hospital

Sponsor typeOTHER

Study typeINTERVENTIONAL

Primary completion2019-06-30

View on ClinicalTrials.gov More Cough Variant Asthma trials