When educating a group of nursing students on the mechanism of action of various antiarrhythmic drugs, the nurse identifies which of the following drugs as inhibiting the beta-adrenergic receptors of the heart and kidney?
A) Propafenone
B) Amiodarone
C) Disopyramide
D) Acebutolol
Ans: D
Feedback:
The nurse should inform the nursing students that acebutolol acts by inhibiting the beta-adrenergic receptors of the heart and kidney. Propafenone and amiodarone appear to act directly on the cardiac cell membrane, and not on the beta-adrenergic receptors of the heart and kidney. Disopyramide acts by decreasing the depolarization of the myocardial fibers, and not the beta-adrenergic receptors of the heart and kidney.
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