Correct Answer: A

Rationale: The correct action for the charge nurse to implement is to remind the client that nurse assignments are not based on patient requests. In this situation, it is essential to establish boundaries and communicate that nurse assignments are made based on clinical decisions, not patient preferences. Option B is incorrect because it compromises the principle of fairness in nurse assignments. Option C is incorrect as it encourages the client's behavior by allowing him to request a different nurse based on personal preferences. Option D is also incorrect as it does not address the issue of patient manipulation and reinforces inappropriate behavior.

Correct Answer: B

Rationale: The correct answer is B: Spironolactone. Spironolactone is a potassium-sparing diuretic that can lead to hyperkalemia. With potassium levels already elevated at 6.2 mEq/L, withholding Spironolactone is essential to prevent further increase in potassium levels, which could result in dangerous cardiac arrhythmias. Losartan (Choice A) is an angiotensin receptor blocker and does not directly affect potassium levels. Metoprolol (Choice C) is a beta-blocker and also does not impact potassium levels significantly. Furosemide (Choice D) is a loop diuretic that can actually lower potassium levels, so it would not be the medication to withhold in this case.

Correct Answer: C

Rationale: A serum creatinine level of 0.3 mg/dL is abnormally low, indicating potential issues with the interpretation of the creatinine clearance test. It is crucial for the nurse to notify the healthcare provider of this result before proceeding with the 24-hour urine collection. Checking urine output, instructing the client to increase fluid intake, or starting the urine collection without consulting the healthcare provider could lead to incorrect test results and misinterpretation of the client's renal function.

Correct Answer: C

Rationale: A negative Pap smear does not rule out ovarian cancer, which often requires more comprehensive evaluation, including imaging studies or surgery. The client should be informed that the Pap smear primarily detects cervical cancer, not ovarian cancer. Therefore, further evaluation involving imaging studies or surgery may be necessary to determine the presence of ovarian cancer. Choice A is incorrect because a Pap smear is not sufficient to detect ovarian cancer. Choice B is incorrect because surgery may be necessary for further evaluation if ovarian cancer is suspected. Choice D is incorrect because further tests are needed to confirm or rule out ovarian cancer.

Correct Answer: D

Rationale: In this scenario, the best reinforcement for the nurse to implement is preferred activities or privileges for compliance. Positive reinforcement with privileges is effective in encouraging behavior change in adolescents, including those with intellectual disabilities. Choice A (Candy for successful oral hygiene tasks) may not be suitable as it involves providing a sugary reward, which contradicts the goal of oral hygiene. Choice B (Tokens for each successful oral hygiene task) could be effective but may not be as motivating as preferred activities or privileges. Choice C (Privilege restrictions for refusing oral hygiene tasks) focuses on negative reinforcement, which is not as effective as positive reinforcement in behavior modification.