Correct Answer: B

Rationale: The correct answer is B: Red meat. Red meat is a good dietary source of heme iron, which is easily absorbed by the body and beneficial for individuals with iron-deficiency anemia. Oatmeal, bananas, and whole grains are not as rich in iron compared to red meat and may not provide sufficient amounts to help manage iron-deficiency anemia effectively.

Correct Answer: B

Rationale: The correct answer is B: Red meat. Red meat is a good dietary source of heme iron, which is easily absorbed by the body and beneficial for individuals with iron-deficiency anemia. Oatmeal, bananas, and whole grains are not as rich in iron compared to red meat and may not provide sufficient amounts to help manage iron-deficiency anemia effectively.

Correct Answer: B

Rationale: The correct answer is B: 'You may experience a persistent cough while taking this medication.' Lisinopril is known to cause a persistent cough as a common side effect. It is essential for the nurse to educate the client about this potential side effect, as it should be reported to the healthcare provider. Choice A is incorrect because lisinopril is usually taken once daily, but not necessarily at bedtime. Choice C is incorrect because lisinopril can actually increase potassium levels, so taking it with a potassium supplement may lead to hyperkalemia. Choice D is incorrect because antacids may reduce the effectiveness of lisinopril, so it should not be taken with them.

Correct Answer: B

Rationale: Keeping the client's legs elevated is the appropriate action to prevent venous thromboembolism following a total knee arthroplasty. Elevating the legs helps promote circulation and reduce the risk of blood clots. Placing a pillow under the client's knees may provide comfort but does not address the specific postoperative complication. Flexing the client's knee every 2 hours may be contraindicated as excessive movement can disrupt the surgical site. Applying heat to the operative knee is not recommended immediately postoperatively as it can increase swelling and discomfort.

Correct Answer: D

Rationale: The correct answer is to infuse the blood within 4 hours. This is crucial to prevent bacterial contamination and hemolysis during blood transfusions. Monitoring the client's blood glucose level every hour (Choice A) is not directly related to packed RBC transfusions. Administering the blood using a microdrip set (Choice B) may be appropriate for specific medications but is not a requirement for packed RBC transfusions. Assessing the client's vital signs every 2 hours (Choice C) is important for monitoring the client's overall condition but is not as time-sensitive as ensuring the timely infusion of packed RBCs.