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 C: Bradycardia. Amiodarone is an antiarrhythmic medication that can cause bradycardia as an adverse effect due to its impact on the electrical conduction system of the heart. This can lead to a slow heart rate, which can be concerning for the client's overall cardiovascular function. Bradypnea (A) refers to slow breathing rate, which is not a typical adverse effect of amiodarone. Fever (B) is not a common adverse effect of amiodarone and should prompt further investigation for other causes. Hypertension (D) is not a typical adverse effect of amiodarone; in fact, it is more likely to cause hypotension.