Correct Answer: D

Rationale: The correct action for the nurse to take is to instruct the client to use acetaminophen for headaches. Acetaminophen is a suitable and safer option for managing headaches associated with calcium channel blockers like diltiazem. It is essential to avoid medications that can interact negatively with diltiazem, such as opioid analgesics, and to not discontinue the medication abruptly without consulting the healthcare provider. Monitoring for medication toxicity through blood samples is not typically indicated for managing headaches in this scenario.

Correct Answer: B

Rationale: The correct instruction for a client prescribed metformin is to take the medication with a full glass of water. This helps ensure proper ingestion and absorption of the medication. While taking metformin with meals can help reduce gastrointestinal side effects, the primary focus should be on adequate hydration and absorption by taking it with water.

Correct Answer: B

Rationale: The correct instruction for the client is to slowly rise from a sitting or lying down position. Isosorbide dinitrate, a nitrate, and hydrochlorothiazide, a diuretic, can both cause hypotension. When used together, their additive effects can further lower blood pressure, leading to orthostatic hypotension. Instructing the client to change positions slowly helps prevent a sudden drop in blood pressure, reducing the risk of dizziness or falls.

Correct Answer: C

Rationale: Prednisone, a corticosteroid, can cause side effects such as hypertension, fluid retention, and weight gain. Hypertension is a common side effect of prednisone due to its impact on sodium and fluid retention in the body. Monitoring blood pressure is crucial to detect and manage hypertension in clients taking prednisone.

Correct Answer: A

Rationale: When a client with diabetes mellitus type 2 is prescribed saxagliptin, it is crucial to instruct them to report any signs of pancreatitis to the healthcare provider. Saxagliptin can lead to pancreatitis as a side effect, making it essential for clients to be vigilant about recognizing and reporting any related symptoms promptly for timely intervention and management.