One or several symptoms suggesting chronic respiratory disease (cough, chest tightness, wheezing, dyspnea or sputum), lasting 3 months or more.
Lung function abnormality (Forced Expiratory Volume in 1 Second /Forced Vital Capacity \< Lower Limit of Normal)
Patients are able to stop anti-histamine 5 days before evaluation
Patients are able to stop bronchodilator treatment before performing lung function test according to standard practice (immediate release theophylline: 24 hours, long acting β2-agonist: 12 hours, short acting β2-agonist: 6 hours and short acting anticholinergic: 8 hours).
You may not be if
Presence of one or more chronic diseases: HIV infection, active tuberculosis, heart failure, cancers, auto-immune diseases, systemic diseases, low BMI (\<18.5) or mental health disorders.
Treatment with non-selective beta-blockers
Severe exacerbation during the last month
Corticosteroid-dependent patients
Pregnant women
Clareo Health | Development of Predictive Biomarkers for the Diagnosis and Treatment of Asthma and COPD in Vietnam.
