A nurse is assessing the vital signs of a client who is taking amiodarone. The nurse should anticipate which of the following findings as an adverse effect of the medication?

The correct answer is A: Bradycardia. Amiodarone is a medication used to treat irregular heartbeats, but it can also cause bradycardia as an adverse effect due to its impact on the electrical conduction system of the heart. This can result in a slow heart rate. Bradycardia is a common adverse effect of amiodarone and the nurse should monitor the client for this. Choices B, C, and D are incorrect because fever, bradypnea, and hypertension are not typically associated with amiodarone use. Fever is not a common side effect, bradypnea (slow breathing) is not a known effect of amiodarone, and hypertension is not a typical adverse effect of the medication.