Mechanism(s) of Airflow Limitation During Exacerbation of Asthma
Recruiting · NCT01225913 · Interventional (participants receive a specific treatment) · Lead sponsor: Gelb, Arthur F., M.D.
View the official record on ClinicalTrials.gov →Interventions studied
What this trial is about
The purpose of this study is to evaluate the site and mechanisms responsible for expiratory airflow limitation in chronic, treated, non-smoking, stable asthmatics with moderate to severe persistent expiratory airflow obstruction. Treatment will include inhaled corticosteroids and long acting beta2agonists. The investigators are interested in determining whether the large and/or small airways are the predominant site of airflow limitation. The investigators are also interested in determining whether intrinsic small airways obstruction and/or loss of lung elastic recoil is responsible for expiratory airflow limitation. The investigators are also interested to evaluate the role of varying doses of inhaled corticosteroids to suppress large and small airway inflammation using exhaled nitric oxide as surrogate markers of inflammation. For comparison purposes, spirometry and measurements of exhaled nitric oxide will also be obtained if possible during a naturally occurring exacerbation of asthma.
Who can take part
Inclusion criteria
- Current non-smoking (\<10 pack yr smoking history)
- Stable, treated asthmatics
- Age 10-80 yr
- post 180ug albuterol by MDI: FEV 1/FVC \< 70% and FEV 1 \<80% predicted
Exclusion criteria
- Pregnancy
Where it is running
1 location listed across 1 US state.
- Arthur F Gelb Medical Corporation - Lakewood, California, United States