A nurse is reviewing the BUN result of a client who is taking cyclosporine following a kidney transplant. Which of the following laboratory studies should the nurse recognize as another renal function study that should be monitored?

Choice A reason: Hypernatremia is unlikely with 0.45% sodium chloride, a hypotonic solution that dilutes serum sodium. Over-infusion risks hyponatremia, not high sodium levels. Monitoring for hypernatremia is inappropriate, as the solution’s low sodium content does not contribute to elevated sodium in fluid therapy.
Choice B reason: Assessing for fluid overload is essential, as 0.45% sodium chloride, being hypotonic, can cause water to shift into cells, risking pulmonary or cerebral edema. This is critical in clients with renal or cardiac issues, where monitoring for dyspnea or swelling ensures safe fluid administration.
Choice C reason: Hypoglycemia is not directly linked to 0.45% sodium chloride, which affects fluid and electrolytes, not glucose. Fluid shifts may indirectly stress metabolism, but hypoglycemia relates to fasting or insulin issues, making this an inappropriate focus for monitoring in this fluid therapy context.
Choice D reason: Dehydration is unlikely, as 0.45% sodium chloride provides free water, promoting hydration. It corrects hypernatremia or replaces fluid losses. Evaluating for dehydration is unnecessary unless infusion is inadequate or losses persist, which is not indicated in the context of this hypotonic solution.

Choice A reason: Nurses can witness advance directives in many settings, depending on state laws, so stating they cannot is inaccurate. This response dismisses the client’s request without providing guidance, making it incorrect and unhelpful for addressing their wishes.
Choice B reason: Including the client’s desire for advance directives in the medical record ensures their wishes are documented and respected. This aligns with the Patient Self-Determination Act, facilitating care planning, making it the correct and supportive response.
Choice C reason: Stating the client’s name can be removed from advance directives is confusing, as directives are personal and revocable, not about name removal. This response is inaccurate and irrelevant to the client’s request, making it incorrect.
Choice D reason: There is no universal age requirement of 21 for advance directives; competent adults (typically 18+) can create them. This statement is incorrect and restrictive, misinforming the client about their rights, making it inappropriate.