Author Question: The nurse is aware that cromolyn sodium (Intal): a. is a beta-2 receptor agonist. b. is best ... (Read 22 times)

soccerdreamer_17 · **on:** Jul 24, 2018

The nurse is aware that cromolyn sodium (Intal):

a. is a beta-2 receptor agonist.
b. is best used in the treatment of an acute asthma attack.
c. inhibits release of histamine from mast cells.
d. produces an anticholinergic effect.

Question 2

The nurse understands that drugs like propranolol:

a. block beta-1 receptors and cause bradycardia.
b. block beta-1 receptors and cause tachycardia.
c. block beta-2 receptors and cause bronchoconstriction .
d. block beta-2 receptors and cause bronchodilation.

gasdhashg · **Reply #1 on:** Jul 24, 2018

Answer to Question 1

ANS: C

Feedback
A Incorrect: This is not the action of cromolyn sodium.
B Incorrect: This is prophylactic for the treatment of bronchial asthma.
C Correct: Cromolyn sodium is a mast cell stabilizer that acts by inhibiting the release of histamine.
D Incorrect: This is not the action of cromolyn sodium.

Answer to Question 2

ANS: C

Feedback
A Incorrect: This is not an action of propranolol, which blocks beta-2 receptors.
B Incorrect: This is not an action of propranolol, which blocks beta-2 receptors.
C Correct: This is the action of propranolol.
D Incorrect: This is not an action of propranolol, which blocks beta-2 receptors, but causes bronchoconstriction .