A client is diagnosed with human immunodeficiency virus (HIV). After recovering from the initial shock of the diagnosis, the client expresses a desire to learn as much as possible about HIV and acquired immunodeficiency syndrome (AIDS). When teaching the client about the immune system, the nurse states that adaptive immunity is provide by which type of white blood cell?

Correct Answer: D

Rationale: Lymphocytes are the type of white blood cells that provide adaptive immunity. There are two main types of lymphocytes: B cells and T cells. B cells produce antibodies that can specifically recognize and target certain pathogens (including HIV), while T cells have various functions in the immune response, such as directly killing infected cells or helping other immune cells. Adaptive immunity is characterized by the body's ability to remember specific pathogens and mount a targeted response upon subsequent exposures. In the context of HIV and AIDS, understanding the role of lymphocytes in adaptive immunity is essential for the client to comprehend how the virus affects the immune system and why immune function becomes compromised over time.

Correct Answer: C

Rationale: The correct answer is C. The glycosylated hemoglobin (HbA1c) test is used to determine the average glucose levels over the past several months (approximately 2-3 months). This test measures the amount of glucose that has been bound to hemoglobin in red blood cells, providing an indication of the patient's overall blood sugar control. This is particularly important for diabetic patients, as it helps healthcare providers assess the effectiveness of the management plan and make necessary adjustments to prevent complications associated with high blood sugar levels over time. The other options provided do not accurately describe what the glycosylated hemoglobin test measures.

Correct Answer: D

Rationale: Fentanyl typically causes hypotension, nausea, and vomiting, but it does not cause acidosis.

Correct Answer: D

Rationale: In a client with low blood volume, a decrease in blood pressure and a rapid heart rate can indicate hypovolemia, which is a condition characterized by a decreased volume of circulating blood. This can lead to inadequate perfusion of vital organs, including the kidneys (choice C), as well as other tissues throughout the body. If left unaddressed, severe hypovolemia can progress to shock, a critical condition where there is inadequate blood flow to meet the body's metabolic demands. This can result in organ dysfunction and potentially life-threatening complications. Therefore, the implications of decreasing blood pressure and a rapid heart rate in a client with low blood volume are indicative of hypovolemia and the potential development of shock.

Correct Answer: D

Rationale: The correct response is D, "Because these drugs prevent cell division, they are more effective in divided doses."