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
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.

A. Monitor capillary refill distal to the infusion site. B. Apply a topical anesthetic at the infusion site for burning. C. Assess IV site frequently for signs of extravasation. D. Explain that temporary burning at the IV site may occur.

Correct Answer is C

Explanation

Choice A rationale

Monitoring capillary refill distal to the infusion site is a general nursing intervention during IV therapy. However, it is not specific to the administration of a vesicant chemotherapeutic agent.

Choice B rationale
Applying a topical anesthetic at the infusion site for burning is not a standard intervention during the administration of a vesicant chemotherapeutic agent. The burning sensation is not due to the IV site but due to the vesicant agent itself.

Choice C rationale
Assessing the IV site frequently for signs of extravasation is the most appropriate intervention during the administration of a vesicant chemotherapeutic agent. Extravasation, the leakage of the vesicant into the surrounding tissue, can cause severe local tissue damage. Early detection and intervention are crucial to minimize harm.

Choice D rationale
While it is important to explain potential side effects to the client, explaining that temporary burning at the IV site may occur is not the most crucial intervention. The priority is to monitor for and prevent extravasation.

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Naxlex Comprehensive Predictor Exams

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

Which intervention should the nurse implement during the administration of a vesicant chemotherapeutic agent via an intravenous (IV) site in the client’s arm?

Correct Answer is C

Explanation

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