Correct Answer: A

Rationale: The health care provider should be notified immediately. The patient has a history and manifestations consistent with hypermagnesemia. The nurse should check the chart for a recent serum magnesium level and make sure that blood is sent to the laboratory for immediate electrolyte and chemistry determinations. Dialysis should correct the high magnesium levels. The patient needs teaching about the risks of taking magnesium-containing antacids. Monitoring of potassium levels also is important for patients with renal failure, but the patient's current symptoms are not consistent with hyperkalemia.

Correct Answer: C

Rationale: The correct first action for the nurse to take when a patient complains of acute chest pain and dyspnea after the insertion of a centrally inserted IV catheter is to auscultate the patient's breath sounds. This is important to assess for any potential complications such as embolism or pneumothorax, which can present with such symptoms. Auscultation can provide immediate information on the patient's respiratory status and guide further interventions. Notifying the health care provider, offering reassurance, or administering morphine should only be considered after assessing the patient's condition through auscultation.

Correct Answer: B

Rationale: In this situation, where there is a conflict between the client's significant other and estranged husband, the most appropriate intervention is to request a consultation with the ethics committee for resolution. This ensures that an impartial body can assess the situation, consider the rights and preferences of all parties involved, and provide guidance on how to proceed in a fair and ethical manner. Obtaining a court order (Choice A) may be a legal option but should be considered after exhausting other conflict resolution methods. Involving security (Choice C) may escalate the situation and should only be considered if there is a risk of harm. Discussing boundaries with the client (Choice D) is important but may not immediately address the current conflict between the significant other and the husband.

Correct Answer: A

Rationale: The correct answer is A. The patient should be placed near the nurse's station if confused to allow close monitoring by the staff. To help improve serum sodium levels, water intake is restricted, so a patient with hyponatremia should not be placed near a water fountain. Peaked T waves are a sign of hyperkalemia, not hyponatremia, so telemetry for this purpose is unnecessary. Placing a confused patient in a semi-private room could be disruptive to the other patient. Additionally, the patient needs sodium replacement, not a low-salt diet.

Correct Answer: B

Rationale: The correct answer is B because using the push-pause method to flush the CVAD after giving medications helps remove debris from the CVAD lumen and decreases the risk for clotting. Choice A is incorrect because friction should be used when cleaning the CVAD insertion site to decrease infection risk. Choice C is incorrect because obtaining an order from the healthcare provider to change the CVAD dressing is not necessary; the dressing should be changed when damp, loose, or visibly soiled. Choice D is incorrect because the patient should face away from the CVAD during cap changes to minimize the risk of contamination.