In obstructive lung disease, such as COPD, asthma or bronchiectasis it takes longer to empty your lungs. The airflow is slower because the disease makes the airways narrower or the lungs less elastic.
Because breathing out is slower, the person may need to breathe in again before they have emptied their lungs. This is called hyperinflation or gas-trapping and makes breathing uncomfortable. Try our suggestions to reduce breathlessness in obstructive lung conditions.