Final answer:
The purpose of using a bronchodilator in COPD is to improve airflow and reduce air trapping.
Step-by-step explanation:
The purpose of using a bronchodilator in COPD is to improve airflow and reduce air trapping. Bronchodilators work by relaxing the muscles around the airways, allowing them to open up and increase airflow. This helps to alleviate symptoms such as shortness of breath and wheezing. Bronchodilators do not have anti-inflammatory properties and do not strengthen bronchial muscle contraction. They provide immediate relief and are effective for relieving acute symptoms.