A nurse is collecting data from a client who is 8 hr postoperative following abdominal surgery. The client's blood pressure is 94/56 mm Hg. Which of the following actions should the nurse take first?

A. Store the medication in the refrigerator: Diltiazem sustained-release tablets do not need to be refrigerated; they should be stored at room temperature, away from moisture and heat.
B. Take the medication at mealtime: It is not necessary to take diltiazem with food unless specifically advised by a healthcare provider. Generally, it can be taken with or without food.
C. Drink grapefruit juice with the medication: Grapefruit juice should be avoided with diltiazem as it can increase the risk of adverse effects by altering the metabolism of the drug.
D. Swallow the medication whole: This is correct as sustained-release tablets should not be chewed or crushed. They are designed to release the medication slowly over time, which can be disrupted if the tablet is altered.

A. Suggest fresh fruits and vegetables: This is incorrect because clients with HIV, especially those with immunosuppression, might be at increased risk for foodborne illnesses from fresh produce. Proper food handling and possibly cooked vegetables might be recommended instead.
B. Offer small, frequent meals: This is correct because small, frequent meals can help manage symptoms like nausea or loss of appetite, which are common in clients with HIV.
C. Provide a diet of pureed foods: This is unnecessary unless the client has specific swallowing difficulties. Generally, pureed foods are not required unless indicated by the client's condition.
D. Encourage fluids with meals: This is incorrect as consuming large amounts of fluids with meals may lead to early satiety, which is not ideal for clients needing to maintain or gain weight.