Ipratropium bromide is typically administered in conjunction with which bronchodilator?

• A. Albuterol
• B. Epinephrine
• C. Diphenhydramine
• D. Acetaminophen

Answer: (A)

Key concept: using two bronchodilators with different mechanisms provides additive relief by widening the airways more effectively than either alone. Ipratropium bromide is a short-acting antimuscarinic that blocks acetylcholine-driven bronchoconstriction, while albuterol is a short-acting beta-2 agonist that relaxes airway smooth muscle. Together, they produce greater bronchodilation and are commonly given in combination for acute bronchospasm or COPD exacerbations (often as a nebulized preparation called DuoNeb). This pairing exploits complementary pathways in the airway to maximize airflow improvement quickly. The other options listed are not the standard bronchodilators used with ipratropium in this context: diphenhydramine is an antihistamine, acetaminophen is an analgesic/antipyretic, and epinephrine is a potent bronchodilator used in specific emergency scenarios rather than the routine combination with ipratropium.