Correct Answer: A

Rationale: Prednisone is associated with potassium depletion, making it important for clients to increase their intake of potassium-rich foods to prevent potential imbalances. Foods such as bananas, oranges, and spinach are good sources of potassium.

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.

Correct Answer: C

Rationale: The correct answer is bone marrow suppression (Choice C). Methotrexate can lead to bone marrow suppression, resulting in adverse effects such as anemia, leukopenia, and thrombocytopenia. Monitoring for signs of decreased blood cell counts is essential to prevent complications and adjust treatment as needed.

Correct Answer: B

Rationale: The correct answer is to avoid drinking grapefruit juice when taking Atorvastatin. Grapefruit juice can interfere with the metabolism of Atorvastatin, leading to increased blood levels of the medication, which can result in a higher risk of adverse effects, such as muscle pain and liver damage. It is important for the client to follow this instruction to ensure the safe and effective use of Atorvastatin.

Correct Answer: C

Rationale: A decrease in episodes of angina is an indicator of Aspirin's effectiveness in preventing cardiovascular events. Aspirin works by inhibiting platelet aggregation, thereby reducing the formation of blood clots that could lead to angina episodes or more severe cardiovascular complications.