Correct Answer: B

Rationale: When a client is prescribed Digoxin, monitoring potassium levels is crucial as hypokalemia can increase the risk of Digoxin toxicity. Low potassium levels can potentiate the effects of Digoxin on the heart, leading to toxicity. Therefore, regular monitoring of potassium levels helps in preventing adverse effects and ensuring the safe use of Digoxin.

Correct Answer: B

Rationale: Clopidogrel is an antiplatelet medication, so monitoring the client's platelet count is crucial to assess for potential bleeding complications. Changes in platelet count can indicate increased risk of bleeding, a known adverse effect of Clopidogrel.

Correct Answer: B

Rationale: Ciprofloxacin should not be taken with dairy products due to the interference of calcium with medication absorption. To ensure optimal effectiveness, the client should be advised to take Ciprofloxacin 1 hour before or 2 hours after consuming dairy products.

Correct Answer: B

Rationale: Amlodipine is a calcium channel blocker known to cause peripheral edema as an adverse effect. The nurse should monitor the client for swelling, particularly in the lower extremities, as it can indicate the development of this side effect.

Correct Answer: A

Rationale: The correct answer is to instruct the client to brush and floss their teeth regularly. Phenytoin can lead to gingival hyperplasia, making oral hygiene crucial to prevent complications. Encouraging good oral care practices helps reduce the risk of adverse effects on the gums and teeth.