NCLEX Question of the Day – Sunday, July 19, 2026

Today’s NCLEX question targets prioritization in pharmacology, especially spotting a medication effect that needs action now. This matters in real nursing because many drugs cause expected side effects, but a few can quickly become dangerous if the nurse misses the pattern. The skill is not just memorizing drug facts. It is knowing what to assess, what to hold, and when to call the provider.

Clinical Scenario

A 72-year-old client is on a medical unit after being admitted for new-onset atrial fibrillation with rapid ventricular response. The client has a history of heart failure, hypertension, and chronic kidney disease stage 3. Six hours ago, the client received an oral loading dose of digoxin. The nurse is reassessing the client before the next scheduled dose.

Current findings:

• Apical pulse: 54/min, regular
• Blood pressure: 108/64 mm Hg
• Potassium: 3.1 mEq/L
• Creatinine: 1.8 mg/dL
• The client reports nausea, poor appetite, and “yellow halos” around lights
• Telemetry shows sinus bradycardia

The Question

Which action should the nurse take first?

Answer Choices

1. A. Administer the scheduled digoxin dose and recheck the heart rate in 1 hour
2. B. Hold the digoxin and notify the provider of findings consistent with possible digoxin toxicity
3. C. Give an antiemetic for nausea and encourage the client to eat a snack
4. D. Document that visual changes are an expected effect of rate-control therapy in older adults

Correct Answer

B. Hold the digoxin and notify the provider of findings consistent with possible digoxin toxicity

Detailed Rationale

This client has several red flags for digoxin toxicity. The nurse should recognize the pattern, hold the medication, and contact the provider before another dose is given.

Start with the heart rate. Digoxin slows conduction through the AV node. That can be useful in atrial fibrillation, but an apical pulse of 54/min is too low for a routine scheduled dose. In general, digoxin is held if the adult apical pulse is below the ordered parameter, commonly 60/min. Giving more could worsen bradycardia and decrease cardiac output.

Next, look at the symptoms. Nausea, poor appetite, and yellow halos around lights are classic warning signs of toxicity. They matter because digoxin has a narrow therapeutic range. Small changes in body handling of the drug can cause harmful effects.

The labs explain why this client is at higher risk. The potassium is 3.1 mEq/L, which is low. Hypokalemia makes digoxin more potent at the cellular level, so toxicity can happen more easily even when the dose seems standard. The creatinine is 1.8 mg/dL, showing reduced kidney function. Digoxin is cleared by the kidneys, so impaired renal function can lead to drug buildup.

The nurse’s first job is safety. That means:

• Hold the next digoxin dose
• Reassess apical pulse and rhythm
• Review electrolytes and renal function
• Notify the provider promptly
• Anticipate orders for a digoxin level, potassium replacement, and continued telemetry monitoring

The nurse should also continue close assessment for worsening toxicity, including increasing bradycardia, new dysrhythmias, confusion, weakness, vomiting, or signs of poor perfusion such as dizziness or hypotension.

This is a good NCLEX priority question because it tests whether the nurse can connect separate data points into one clinical judgment. Any one finding alone might seem manageable. Together, they point to a medication problem that can become serious fast.

Why the Other Options Are Wrong

A. Administer the scheduled digoxin dose and recheck the heart rate in 1 hour

This is unsafe. The client already has bradycardia and symptoms that fit toxicity. Waiting an hour after giving the drug could allow the condition to worsen. Rechecking later does not fix the immediate risk.

C. Give an antiemetic for nausea and encourage the client to eat a snack

This treats only one symptom and ignores the cause. Nausea here is not the main problem. It is a clue. If the nurse covers up the symptom without addressing the digoxin, the client could continue to deteriorate.

D. Document that visual changes are an expected effect of rate-control therapy in older adults

This is incorrect. Yellow halos and similar visual disturbances are not a harmless expected effect of digoxin. They are a known sign of toxicity. Normal aging does not explain this finding.

Key Takeaways

• Digoxin has a narrow safety margin. Small shifts in kidney function or potassium can make a big difference.
• Common toxicity clues include bradycardia, nausea, anorexia, weakness, confusion, and visual changes.
• Low potassium increases the risk of digoxin toxicity because it strengthens digoxin’s effect on the heart.
• Always check the apical pulse before giving digoxin. If it is below the ordered threshold, hold the dose and assess further.
• Kidney impairment matters because digoxin is cleared renally and can accumulate.

• What you’d do on shift: Check apical pulse for a full minute, review potassium and creatinine, ask about nausea and vision changes, hold digoxin if indicated, keep the client on telemetry, and notify the provider with clear assessment data.

Quick Practice Extension

1. A client taking digoxin develops new confusion and vomiting, but the heart rate is 68/min. Which additional data would most strengthen concern for toxicity?
2. A client on digoxin and a loop diuretic asks why lab draws are done so often. How would you explain the reason in simple patient-friendly language?

Category used today: Pharmacology

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