bronchodilator
Pronunciation: BRON-ko-dy-lay-tor
Medication that relaxes smooth muscle in airways to relieve bronchospasm, fundamental therapy in pediatric asthma and reactive airway disease.
Full Definition
Bronchodilators are medications that cause relaxation of smooth muscle in the airways, leading to bronchodilation and improved airflow. In pediatric pulmonology, these medications are categorized as short-acting (rescue medications like albuterol) or long-acting (controller medications like salmeterol). Beta-2 agonists are the most commonly used bronchodilators in children, delivered via metered-dose inhalers with spacers, nebulizers, or dry powder inhalers depending on age and ability. Other classes include anticholinergics (ipratropium) and methylxanthines (theophylline). Bronchodilator response testing during pulmonary function studies helps confirm reversible airway obstruction characteristic of asthma.
Usage
Usage note: Distinguish between short-acting (rescue) and long-acting (controller) formulations in documentation.
In Context
- "The child responded well to bronchodilator therapy with significant improvement in wheezing and work of breathing." — Emergency department treatment
- "Parents were instructed on proper bronchodilator inhaler technique using a valved holding chamber." — Asthma education visit