bronchodilator responsiveness

Bronchodilator responsiveness refers to how your airways respond to medication that relaxes and opens them. When you breathe in a bronchodilator, like albuterol, it can temporarily improve airflow if you have airway constriction, such as in asthma or COPD. Testing this response helps doctors determine how much your airways improve after medication, which aids in diagnosis and treatment planning. A significant increase in airflow indicates that your airways are responsive to the medication, while little to no change suggests other causes or less airway reactivity.