Correct Answer: A

Rationale: The correct answer is A: 'It helps my body make red blood cells.' Erythropoietin is a medication that stimulates the production of red blood cells in the body. Clients with chronic renal failure often develop anemia due to decreased erythropoietin production by the kidneys. This medication helps address that issue by increasing red blood cell production. Choices B, C, and D are incorrect because erythropoietin does not prevent infections, help kidneys excrete excess fluid, or assist with breathing; its primary action is to boost red blood cell production.

Correct Answer: A

Rationale: The correct answer is to monitor the client's respiratory status. When administering opioids like morphine sulfate via a PCA pump, it is crucial to closely monitor the client's respiratory status to detect signs of respiratory depression early. This is important for ensuring the client's safety while receiving pain management. Choices B, C, and D are incorrect because while teaching the client to use the PCA pump and assessing or evaluating their pain level are essential aspects of care, monitoring respiratory status takes precedence due to the potential risks associated with opioid use.

Correct Answer: A

Rationale: The correct answer is A. Using crutches indicates an understanding of weight-bearing restrictions post-surgery. Choice B is incorrect because waiting for a wheelchair is not related to postoperative mobility instructions. Choice C is incorrect as turning in bed using the trapeze bar and side rails does not address weight-bearing restrictions. Choice D is incorrect because putting full weight on the foot immediately after surgery contradicts the need to keep weight off the knee.

Correct Answer: A

Rationale: The correct answer is A. Understanding the duration of the previous pregnancy helps assess the client's obstetric history. Choice B focuses on the time it took to conceive after the miscarriage, which is less relevant at this point. Choice C asks about the timing of the miscarriage rather than the duration of the previous pregnancy. Choice D inquires about the current status of having children, which is not directly related to the client's obstetric history.

Correct Answer: C

Rationale: The correct answer is C: Rationalization. Rationalization is a defense mechanism where the client justifies their stress and need for perfection by creating logical explanations or excuses. In this case, the client is rationalizing their stress by believing that everything in their life must be perfect. Repression (choice A) involves unconsciously blocking out thoughts or feelings. Sublimation (choice B) is redirecting unacceptable impulses into socially acceptable activities. Displacement (choice D) involves transferring emotions from one target to another.