NCLEX Question of the Day – Thursday, May 14, 2026

Today’s NCLEX question targets early recognition of medication-related harm, a skill that matters on every unit. Nurses are often the first to notice subtle changes that signal a drug is becoming dangerous instead of helpful. Catching that change quickly can prevent serious complications, especially with high-alert medications.

Clinical Scenario

A 72-year-old client is admitted to a medical-surgical unit with worsening heart failure and new atrial fibrillation. The client has a history of chronic kidney disease stage 3, hypertension, and poor appetite for the past week. The provider prescribed digoxin 0.125 mg by mouth daily 4 days ago to help control the ventricular rate. During morning assessment, the nurse notes the client is more tired than yesterday and says, “Food tastes strange, and I feel a little sick to my stomach.” The client also reports seeing “yellow halos” around the bathroom light. Apical pulse is 54/min and regular, blood pressure is 108/64 mm Hg, potassium level from this morning is 3.1 mEq/L, and creatinine is mildly elevated from baseline.

The Question

Which action should the nurse take first?

Answer Choices

1. Administer the scheduled digoxin dose and reassess the pulse in 1 hour
2. Hold the digoxin and notify the provider of suspected toxicity
3. Encourage the client to eat a high-fiber breakfast before taking the medication
4. Document the findings as expected effects of treatment for atrial fibrillation

Correct Answer

B. Hold the digoxin and notify the provider of suspected toxicity

Detailed Rationale

This client is showing several classic signs of digoxin toxicity. The key cues are bradycardia, nausea, visual disturbances, low potassium, and impaired kidney function. When you put those findings together, the safest first action is to stop the medication from being given and alert the provider.

Start with the pulse. Digoxin slows conduction through the AV node. That is why it can help with atrial fibrillation. But if the apical pulse is low, especially below 60/min in an adult, giving the medication can worsen bradycardia and increase the risk of dangerous dysrhythmias. An apical pulse of 54/min is a red flag.

Next, look at the symptoms. Nausea and appetite changes are early toxicity signs. Seeing yellow halos or blurred vision is another classic clue. These are not harmless side effects to simply document. They suggest the serum level may be too high or the client is becoming overly sensitive to the drug.

The potassium level matters a lot here. Hypokalemia increases the effect of digoxin on the heart. In simple terms, low potassium makes digoxin more likely to bind and cause toxic effects. A potassium of 3.1 mEq/L is low enough to increase concern right away.

The kidney history also matters. Digoxin is cleared by the kidneys. If kidney function worsens, the drug can build up in the body even when the ordered dose looks normal. Older adults are especially vulnerable because they often have reduced renal clearance and may show toxicity sooner.

So what should the nurse do? First, hold the digoxin. Then notify the provider promptly and report the full picture: apical pulse, symptoms, potassium result, and kidney function change. The nurse should expect possible new orders such as a digoxin level, repeat electrolytes, cardiac monitoring, potassium replacement, or medication adjustment. If the client becomes unstable, the nurse should escalate care quickly.

The nurse should also continue focused assessment and monitoring. That includes apical pulse, blood pressure, cardiac rhythm, mental status, nausea or vomiting, visual changes, and lab trends. In real practice, this is how a nurse prevents progression from early toxicity to a life-threatening rhythm problem.

Why the Other Options Are Wrong

A. Administer the scheduled digoxin dose and reassess the pulse in 1 hour

This is unsafe. The client already has a low apical pulse and multiple toxicity symptoms. Giving another dose could worsen bradycardia or trigger dysrhythmias. Reassessment is important, but not after giving a medication that may be causing harm.

C. Encourage the client to eat a high-fiber breakfast before taking the medication

This does not address the urgent problem. The issue is not mild stomach upset alone. The client has a cluster of findings strongly suggesting toxicity. Also, delaying the medication with food does not fix the low pulse, visual changes, or low potassium.

D. Document the findings as expected effects of treatment for atrial fibrillation

These are not expected therapeutic effects. A controlled heart rate may be expected, but bradycardia with nausea and yellow halos is concerning, not routine. Documentation matters, but it must be paired with action when assessment findings suggest risk.

Key Takeaways

• Digoxin toxicity can show up as nausea, poor appetite, fatigue, confusion, visual changes, and bradycardia.
• Always check the apical pulse before giving digoxin. In adults, hold the dose and question it if the pulse is below the ordered parameter, commonly below 60/min.
• Low potassium makes digoxin more dangerous because it increases the drug’s effect on cardiac tissue.
• Older adults and clients with kidney impairment are at higher risk because the drug can accumulate.
• The nurse’s first priority is to prevent further harm: hold the medication, assess carefully, and notify the provider.

• On-shift mini-checklist:
• Check apical pulse for 1 full minute before administration
• Review potassium and renal function before giving the dose when available
• Ask about nausea, appetite, fatigue, and vision changes
• Hold the medication if findings suggest toxicity or the pulse is too low
• Notify the provider and continue cardiac monitoring as indicated

Quick Practice Extension

1. A client taking digoxin and furosemide reports vomiting and weakness. Which lab value would increase the nurse’s concern the most before the next dose?

2. A provider prescribes digoxin for a client with atrial fibrillation. What teaching should the nurse give about checking pulse at home and when to call the clinic?

Category for today: Pharmacology

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