What is the primary effect of SABAs?

What is the primary effect of SABAs?

• A. Bronchodilation to decrease bronchospasm and improve airflow.
• B. Increase airway inflammation.
• C. Promote mucus production.
• D. Cause bronchio-constriction.

Answer: (A)

Primary effect: rapid bronchodilation. Short-acting beta-agonists bind to beta-2 receptors on airway smooth muscle, causing the muscles to relax and the airways to open. This reduces bronchospasm and lowers airway resistance, quickly improving airflow and relief from wheeze or shortness of breath during acute episodes. They don’t increase airway inflammation, promote mucus production, or cause bronchio-constriction; their role is to relieve symptoms promptly, with effects that are fast but temporary.

Primary effect: rapid bronchodilation. Short-acting beta-agonists bind to beta-2 receptors on airway smooth muscle, causing the muscles to relax and the airways to open. This reduces bronchospasm and lowers airway resistance, quickly improving airflow and relief from wheeze or shortness of breath during acute episodes. They don’t increase airway inflammation, promote mucus production, or cause bronchio-constriction; their role is to relieve symptoms promptly, with effects that are fast but temporary.