1. COPD 2. asthma 3. Healthy subjects air pollution, COPD, asthma
Conditions
Interventions
COPD subjects with stable disease, age more than 40 years old,Asthma subjects with stable disease, age more than 20 years old,Healthy subjects with stable disease, age more than 20 years old
Other,Other,Other
COPD,Asthma,Healthy subjects
Sponsors
Faculty of Medicine, Chiang Mai University
Eligibility
Sex/Gender
All
Age
20 Years to No maximum
Inclusion criteria
Inclusion criteria: 1. COPD subjects with stable disease, age more than 40 years old 2. Asthma subjects with stable disease, age more than 20 years old 3. Healthy subjects with age more than 20 years old
Exclusion criteria
Exclusion criteria: 1. Subjects with uncontrolled underlying diseases. 2. Current smokers 3. Body mass index more than 30 kg/m2
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| fractional exhaled nitric oxide (FeNO) 2 (at pollution period and non pollution period) ppb | — |
Secondary
| Measure | Time frame |
|---|---|
| Forced expiratory volume in the first second (FEV1) 2 (at pollution period and non pollution period) %,airway resistance 2 (at pollution period and non pollution period) cmH2O | — |
Countries
Thailand
Contacts
Public ContactWarawut Chaiwong
Faculty of Medicine, Chiang Mai University
Outcome results
None listed