Which statement best describes albuterol's effect on the airways?

Which statement best describes albuterol's effect on the airways?

• A. Relaxes bronchial smooth muscle to promote bronchodilation
• B. Causes airway inflammation
• C. Inhibits mucus production
• D. Induces bronchoconstriction

Answer: (A)

Albuterol’s primary action is to relax the smooth muscle lining the airways, which opens up the passages and reduces airway resistance. It achieves this by activating beta-2 receptors on bronchial smooth muscle, increasing cAMP inside the cells, which leads to muscle relaxation and bronchodilation. That is why the statement describing relaxing bronchial smooth muscle to promote bronchodilation is the best description of its effect. The other ideas don’t fit the drug’s action: albuterol does not cause airway inflammation, it does not inhibit mucus production, and it does not induce bronchoconstriction. In fact, its main clinical use is to rapidly relieve bronchospasm by opening the airways, not to alter inflammation or mucus directly.

Albuterol’s primary action is to relax the smooth muscle lining the airways, which opens up the passages and reduces airway resistance. It achieves this by activating beta-2 receptors on bronchial smooth muscle, increasing cAMP inside the cells, which leads to muscle relaxation and bronchodilation. That is why the statement describing relaxing bronchial smooth muscle to promote bronchodilation is the best description of its effect.

The other ideas don’t fit the drug’s action: albuterol does not cause airway inflammation, it does not inhibit mucus production, and it does not induce bronchoconstriction. In fact, its main clinical use is to rapidly relieve bronchospasm by opening the airways, not to alter inflammation or mucus directly.