A patient with a history of heart failure presents at the emergency department reporting fatigue and weakness. The patient has been taking 50 mg spironolactone tablets orally every day.

The nurse receives a lab report indicating the patient’s serum potassium level is 6.2 mEq/L (6.2 mmol/L). What is the most important intervention for the nurse to implement?

Compare muscle strength bilaterally.

Observe the color and amount of urine.

Determine the apical pulse rate and rhythm.

Assess the strength of deep tendon reflexes.

Answer and Explanation

The Correct Answer is C

Choice A rationale
Comparing muscle strength bilaterally is not the most important intervention in this situation. While muscle weakness can be a symptom of hyperkalemia, it is not the most immediate concern. Hyperkalemia can lead to life-threatening cardiac dysrhythmias, which is a more immediate threat to the patient’s life.

Choice B rationale

Observing the color and amount of urine can provide information about the patient’s renal function, which is important in the regulation of potassium. However, this is not the most immediate concern when a patient’s serum potassium level is dangerously high.

Choice C rationale
Determining the apical pulse rate and rhythm is the most important intervention. Hyperkalemia can cause cardiac dysrhythmias, so the nurse should immediately assess the patient’s heart rate and rhythm. The nurse should also place the patient on a cardiac monitor, if not already done, and notify the healthcare provider immediately.

Choice D rationale
Assessing the strength of deep tendon reflexes can provide information about neuromuscular function, which can be affected by hyperkalemia. However, this is not the most immediate concern. The nurse’s priority is to assess and monitor for life-threatening cardiac dysrhythmias.

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Correct Answer is D

Explanation

Choice A rationale
While it’s important to know the patient’s current medications as they can influence the patient’s condition and treatment plan, this information is not the most critical to convey first in this situation.
Choice B rationale
The increasing confusion of the patient is a significant symptom, especially after a fall. It could indicate a possible head injury. However, the cause of the confusion (the fall) should be communicated first.
Choice C rationale
Knowing who holds the patient’s healthcare power of attorney is important, especially if the patient’s condition worsens and decisions need to be made on their behalf. However, this information is not the most critical to convey first.
Choice D rationale
The fall from a ladder as the reason for admission is the most important information to provide first. This gives the healthcare provider immediate context about the potential severity and type of injuries, guiding further assessment and treatment.

A. Mix the dextrose in a 50 mL piggyback for a total volume of 100 mL. B. Dilute the dextrose in one liter of 0.9% normal saline solution. C. Request the pharmacist to add the dextrose to a total parenteral nutrition (TPN) solution. D. Administer the undiluted dextrose slowly through the currently infusing IV. .

Correct Answer is D

Explanation

Choice A rationale
Mixing the dextrose in a 50 mL piggyback for a total volume of 100 mL is not the appropriate method for administering the medication. This would dilute the dextrose, reducing its concentration and potentially making it less effective.
Choice B rationale
Diluting the dextrose in one liter of 0.9% normal saline solution is not the appropriate method for administering the medication. This would significantly dilute the dextrose, reducing its concentration and potentially making it less effective.
Choice C rationale
Requesting the pharmacist to add the dextrose to a total parenteral nutrition (TPN) solution is not the appropriate method for administering the medication. While dextrose is often a component of TPN solutions, in this case, the patient requires a concentrated dose of dextrose to treat insulin shock.

Choice D rationale
This is the correct answer. Administering the undiluted dextrose slowly through the currently infusing IV is the appropriate method for administering the medication. This allows for the rapid administration of a concentrated dose of glucose, which is necessary to quickly raise the patient’s blood glucose level in the case of insulin shock.

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Naxlex Comprehensive Predictor Exams

Correct Answer is D

Explanation

The nurse is preparing a 50 mL dose of 50% dextrose IV for a patient with insulin shock. What is the appropriate method for administering the medication?

Correct Answer is D

Explanation

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