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.
ANS: C
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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.
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