Correct Answer: B

Rationale: The correct answer is B: Serum creatinine. Vancomycin is known to be nephrotoxic, meaning it can cause kidney damage. Monitoring serum creatinine levels is essential to assess kidney function and detect any signs of nephrotoxicity. Blood glucose levels (choice A) are not directly affected by vancomycin. INR levels (choice C) are typically monitored for clients on anticoagulants, not vancomycin. Liver function tests (choice D) are not primarily affected by vancomycin use; kidney function is of greater concern.

Correct Answer: C

Rationale: The correct answer is C. A history of recurring bowel inflammation can impact the absorption and effectiveness of arthritis medication. Bowel inflammation can affect the body's ability to absorb the medication properly, leading to decreased effectiveness. Choices A, B, and D do not directly relate to the decreased effectiveness of the arthritis medication. Taking medication with water, skipping doses, or taking anti-inflammatory medication without food may not be ideal practices but are not directly linked to the decrease in effectiveness reported by the client.

Correct Answer: C

Rationale: The correct answer is C: 'Lowered immune system function.' As individuals age, their immune system tends to weaken, making them more susceptible to infections. Choices A, B, and D are incorrect because improved circulation and increased immune function would typically reduce the risk of infections, while dehydration can impact overall health but is not directly related to immune system function in the context of infection risk.

Correct Answer: A

Rationale: Administering pain medications as prescribed is a priority to manage chronic pain effectively. Pain medications help alleviate the client's discomfort and improve their quality of life. Encouraging physical activity, monitoring for depression, and educating about alternative therapies are important interventions but may not directly address the immediate need for pain relief in a client with chronic pain. Physical activity and alternative therapies can be beneficial as part of a holistic pain management plan, but addressing the pain directly should be the initial priority.

Correct Answer: A

Rationale: Increased thirst is a classic symptom of hyperglycemia due to the body trying to eliminate excess glucose through urine, leading to dehydration and increased thirst. Weight gain, decreased urination, and fatigue are not typical signs of hyperglycemia. Weight gain is more commonly associated with conditions like hypothyroidism or fluid retention. Decreased urination is not a typical symptom of hyperglycemia, as high blood sugar levels usually lead to increased urination. Fatigue can be a symptom of hyperglycemia, but it is not as specific or characteristic as increased thirst.