Deck 27: Drugs for Respiratory Tract Disorders

Question 1

Dextromethorphan is the most widely used antitussive drug because of which attribute?

A) does not bind to opioid receptors
B) full agonist at opioid receptors
C) partial agonist at opioid receptors
D) antagonist at opioid receptors
E) little effect on the central nervous system

Answer 1

little effect on the central nervous system

Question 2

By which mechanism does tiotropium improve respiratory function in patients with emphysema?

A) increasing levels of cyclic AMP in smooth muscle
B) inhibiting vagally mediated bronchoconstriction
C) improving diaphragmatic function and ventilation
D) stimulation of brainstem respiratory centers
E) improving mucociliary clearance

Answer 2

inhibiting vagally mediated bronchoconstriction

Question 3

Which drug would be most effective in cases of severe asthma involving the formation of leukotriene B₄?

A) montelukast
B) zafirlukast
C) zileuton
D) cromolyn sodium
E) lodoxamide

Answer 3

zileuton