Correct Answer: A

Rationale: Corrected Question: When assessing a patient with hyperkalemia, monitoring the ECG and administering insulin are crucial steps. Hyperkalemia can affect the heart's function, leading to life-threatening arrhythmias. Monitoring the ECG helps in identifying any cardiac abnormalities associated with high potassium levels. Administering insulin, along with glucose, helps shift potassium from the bloodstream into the cells, temporarily lowering the potassium levels. Choice B is incorrect because monitoring blood glucose levels and providing fluids are not the primary interventions for hyperkalemia. Choice C is incorrect as monitoring for muscle weakness and administering calcium gluconate are not the first-line treatments for hyperkalemia. Calcium gluconate may be used in specific situations to stabilize cardiac cell membranes in severe cases of hyperkalemia. Choice D is incorrect because monitoring electrolyte levels and providing potassium supplements would worsen hyperkalemia, as the patient already has elevated potassium levels and does not require additional potassium supplementation.

Correct Answer: A

Rationale: The signs of opioid withdrawal typically include sweating and nausea. The correct management approach involves administering methadone to alleviate the symptoms. Choice B is incorrect because naloxone is used to reverse opioid overdose, not for managing withdrawal symptoms. Choice C is incorrect as buprenorphine is typically used to treat opioid addiction, not just withdrawal symptoms. Choice D is incorrect as sedatives are not the primary treatment for opioid withdrawal.

Correct Answer: C

Rationale: An elevated creatinine level indicates impaired kidney function, which may affect the client's ability to undergo surgery. The other laboratory values (white blood cell count, potassium level, and hemoglobin level) are within normal ranges and do not directly impact the client's readiness for surgery.

Correct Answer: A

Rationale: The correct answer is A: 'Sweating and trembling.' These are classic early signs of hypoglycemia in a diabetic patient. Sweating occurs due to the activation of the sympathetic nervous system in response to low blood sugar levels, while trembling is a result of the body's attempt to increase muscle activity to raise blood sugar levels. Confusion and irritability (Choice B) are more advanced signs of hypoglycemia that occur if the condition is not treated promptly. Dizziness and increased heart rate (Choice C) can also occur but are not as specific and early as sweating and trembling. Nausea and vomiting (Choice D) are more commonly associated with other conditions or severe hypoglycemia, rather than being early signs.

Correct Answer: B

Rationale: The correct answer is B. The nurse should inform the client that their oncologist might prescribe a cold cap during treatment to reduce chemotherapy-induced hair loss by cooling the scalp. Choice A is incorrect as washing the hair during treatment is generally recommended. Choice C is incorrect as sunscreen is not typically needed for the scalp in this context. Choice D is incorrect as regrowth of hair can vary among individuals and is not guaranteed within a specific timeframe.