Cough Variant Asthma Clinical Trial
Official title:
Randomised, Open-label, Parallel-group Study of the Response to Bronchodilator Treatment in Subjects With Eosinophilic Bronchitis and the Mechanism of Varied Responses to Bronchodilator Treatment.
This study aim is to observe the response to Bambuterol Hydrochloride tablets treatment in
subjects with eosinophilic bronchitis .
The investigators hypothesize:
A few of subjects with EB have some responses to Bambuterol Hydrochloride tablets therapy.
Most of subjects with CVA respond well to Bambuterol Hydrochloride tablets therapy
Study groups:
45 patients with chronic cough will be collected and two groups will formed based on
diagnosis as follows:
Group 1: EB group The patients with eosinophilic bronchitis received Bambuterol Hydrochloride
tablets 10mg Q24 for three days .
Group 2: CVA group The patients with cough variant asthma received Bambuterol Hydrochloride
tablets 10mg Q24 for three days .
Observe the response to Bambuterol Hydrochloride tablets treatment three days later and
compare the effective rate of patients with EB and CVA. Then the study will be over.
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