Cromolyn sodium inhibits the degranulation of mast cells and therefore the release of histamines and leukotrienes. The exact mechanism is not known. Cromolyn sodium has a short
Which one of the following substances works to directly reverse bronchoconstriction and hence is the treatment of choice in severe, allergic respiratory distress?
Extra info: Epinephrine can be lifesaving in anaphylaxis. Once the disease process is well underway, the other drugs (A & B) are of little value. You must know this! You will not have time to look it up in an emergency situation!
Which of the following substances could prevent the ragweed allergen from reaching the sensitized mast cell?
Extra info: This is blocking antibody. All other drugs act after the antigen has bound to the receptor.