Correct Answer: D

Rationale: The correct answer is D: 200 CD4+ cells. In AIDS, the immune system is severely compromised, leading to a decrease in CD4+ T cells. A CD4+ count below 200 cells/mm3 is a key indicator of AIDS, as it signifies advanced immunodeficiency. Choices A, B, and C all have CD4+ cell counts above 200, which would not support the occurrence of AIDS. Therefore, the nurse would evaluate a CD4+ count of 200 cells as laboratory data that support the occurrence of AIDS.

Correct Answer: A

Rationale: The correct answer is A because after a total thyroidectomy, the client will no longer produce thyroid hormones, necessitating lifelong replacement therapy. This statement shows an understanding of the need for ongoing medication to maintain thyroid function. Choice B is incorrect as the client had a total thyroidectomy, so there is no risk of hyperthyroidism recurrence. Choice C is incorrect as the client will need ongoing care and monitoring for thyroid function. Choice D is incorrect as increasing caloric intake is not a necessary long-term care measure after a thyroidectomy.

Correct Answer: A

Rationale: The correct answer is A: Decreased resistance to infection. Lymphocytes are a crucial part of the immune system, responsible for fighting off infections. A decrease in the number of lymphocytes with age leads to a weakened immune response, making individuals more susceptible to infections. - Choice B: Cognitive problems, is not directly related to lymphocyte levels. - Choice C: Urinary incontinence, is not a typical effect of decreased lymphocytes. - Choice D: Decrease in various blood components, is too broad and not specific to the role of lymphocytes in immunity.

Correct Answer: C

Rationale: The correct answer is C: Hypercalcemia. In bone cancer, there can be excessive release of calcium from the bones, leading to elevated blood calcium levels. This can result in various complications such as kidney stones, cardiac arrhythmias, and weakness. Hyperkalemia (choice A) is not commonly associated with bone cancer. Hyponatremia (choice B) is more commonly seen in conditions like heart failure or kidney disease. Hypomagnesemia (choice D) is not a common electrolyte disturbance in bone cancer.

Correct Answer: D

Rationale: The correct answer is D: Vitamin D. Vitamin D is essential for the absorption of calcium in the intestines. Without sufficient vitamin D, the body cannot effectively absorb calcium, leading to potential issues with calcium absorption. Vitamin A (choice A) is not directly involved in calcium absorption. Vitamin B (choice B) and Vitamin C (choice C) also do not play a significant role in calcium absorption. Therefore, the lack of Vitamin D is the most likely cause for problems with calcium absorption.