A nurse is administering insulin to a patient after misreading their glucose as 210 mg/dL instead of 120 mg/dL. What should the nurse monitor for?

Correct Answer: A

Rationale: The correct answer is to monitor for hypoglycemia. Insulin administration based on a misread glucose level can lead to hypoglycemia due to the unnecessary lowering of blood sugar levels. Monitoring for hypoglycemia involves assessing the patient's blood glucose levels frequently, observing for signs and symptoms such as shakiness, confusion, sweating, and administering glucose if hypoglycemia occurs. Choice B, monitoring for hyperkalemia, is incorrect as insulin administration typically lowers potassium levels. Choice C, administering glucose IV, is not the immediate action needed as the patient could potentially develop hypoglycemia from the excess insulin. Choice D, documenting the incident, is important but not the immediate priority when dealing with a potential hypoglycemic event.

Correct Answer: A

Rationale: When caring for a patient with an air leak in the chest tube system, the nurse should tighten the connections of the chest tube system. This action can help resolve the air leak by ensuring there are no loose connections or leaks in the system. Continuing to monitor the patient (Choice B) is important, but addressing the air leak is a priority. Replacing the chest tube system (Choice C) may not be necessary if tightening the connections resolves the issue. Clamping the chest tube (Choice D) is not appropriate as it can lead to tension pneumothorax.

Correct Answer: A

Rationale: Unrelieved pain, pallor, and pulselessness are classic signs of compartment syndrome. In this condition, increased pressure within a muscle compartment impairs blood flow, leading to severe pain that is not relieved by usual measures, pallor from decreased blood flow, and pulselessness due to compromised circulation. These signs indicate a medical emergency requiring immediate intervention. Localized redness and swelling (Choice B) are more characteristic of inflammation or infection rather than compartment syndrome. Fever and signs of infection (Choice C) are not typical manifestations of compartment syndrome. Loss of deep tendon reflexes (Choice D) is associated with conditions affecting the nervous system, not compartment syndrome.

Correct Answer: A

Rationale: Flattened T waves are an early ECG sign of hyperkalemia. Hyperkalemia affects the repolarization phase of the cardiac action potential, leading to changes such as peaked T waves, prolonged PR interval, widened QRS complex, and ultimately sine wave pattern. Elevated ST segments, prominent U waves, and widened QRS complex are not typically associated with hyperkalemia, making choices B, C, and D incorrect.

Correct Answer: A

Rationale: In a patient with compartment syndrome, the classic signs include unrelieved pain, pallor, and pulselessness. These signs indicate compromised circulation and neurovascular function in the affected compartment. Fever and infection (Choice B) are not typical signs of compartment syndrome. Localized redness and swelling (Choice C) can be seen in other conditions like cellulitis but are not specific to compartment syndrome. Loss of sensation in the affected area (Choice D) may occur in some cases but is not as specific or consistent as unrelieved pain, pallor, and pulselessness in diagnosing compartment syndrome.