Correct Answer: A

Rationale: The correct action for the nurse to take when a patient refuses a newly open fentanyl patch is to ask another nurse to witness the disposal of the new patch. This is essential for accountability and ensuring proper disposal procedures are followed. Choice B is incorrect because disposing of the patch in a sharps container without a witness does not ensure proper accountability. Choice C is incorrect as sending the patch back to the pharmacy is not the appropriate action for disposal. Choice D is incorrect because although documenting the refusal is important, it is also crucial to ensure proper disposal of the unused patch by having another nurse witness it.

Correct Answer: A

Rationale: Lipsmacking is a common sign of tardive dyskinesia, a long-term side effect of haloperidol. Tardive dyskinesia is characterized by repetitive, involuntary, purposeless movements such as lipsmacking, tongue protrusion, and facial grimacing. Agranulocytosis (choice B) is a potential side effect of antipsychotic medications but is not specifically associated with haloperidol. Clang association (choice C) is a form of disorganized speech seen in conditions like schizophrenia but is not a side effect of haloperidol. Alopecia (choice D) refers to hair loss and is not a common long-term side effect of haloperidol.

Correct Answer: A

Rationale: The correct answer is A: 'To reduce nausea and vomiting.' Antiemetics are medications used to prevent or alleviate nausea and vomiting. While they may indirectly help with appetite by reducing the unpleasant symptoms that can lead to decreased food intake, their primary purpose is not to increase appetite (Choice B). Choice C, 'To treat nausea caused by chemotherapy,' is partly correct as antiemetics are commonly used to manage chemotherapy-induced nausea, but this is not their exclusive purpose. Choice D, 'To treat allergic reactions,' is incorrect as antiemetics are not primarily used for treating allergic reactions.

Correct Answer: D

Rationale: Stridor is a high-pitched sound that indicates airway obstruction and is the priority finding to report following a thyroidectomy. In this situation, airway compromise is a critical concern that requires immediate intervention to ensure adequate oxygenation. While calcium level (Choice A) and serum sodium level (Choice B) are important assessments post-thyroidectomy, they do not represent an immediate threat to the client's airway. A respiratory rate of 18/min (Choice C) falls within the normal range and does not indicate an immediate risk to the client's airway compared to the presence of stridor.

Correct Answer: A

Rationale: The correct answer is A: Hypokalemia. Furosemide is a loop diuretic that can lead to potassium loss, resulting in hypokalemia. This electrolyte imbalance necessitates close monitoring to prevent complications such as cardiac arrhythmias. Choices B, C, and D are incorrect. Hypercalcemia is not a common side effect of furosemide. Hyponatremia is more commonly associated with other medications like thiazide diuretics. Hyperkalemia is the opposite electrolyte imbalance and is not typically seen with furosemide use.