👤 By the CinnaRN Clinical Content Team🕐 Updated 2026-08-23🏷️ Safety & Infection Control🔖 Free to read, print, and share
Also known as: plumbism · lead toxicity · elevated blood lead · lead exposure in kids
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Use this quick-reference guide to spot, treat, and prevent Lead Poisoning on the NCLEX. Keep it handy during review and on exam day!
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📒 The 1-minute cheat sheet
⚠️ Causes
Old paint chips, dust, soil
Pica behavior, pre-1978 homes
🩺 Signs
Irritable, ↓ dev, learning issues
Anemia, abd pain, constipation
Encephalopathy if severe
✅ Do
Screen at 12 & 24 months
Chelation: succimer, EDTA, BAL
Remove lead source = key
🎓 Teach
Wet-mop, wash hands/toys
↑ iron, calcium, vit C diet
📚 Lead Poisoning — full study notes
The cheat sheet above is your quick recall card. These notes go deeper — what it is, what to do first, what must be reported, and what to teach.
Lead poisoning results from ingesting or inhaling lead, most often from paint or dust in homes built before 1978. Young children are at highest risk because of hand-to-mouth behavior and pica. Key principle: lead toxicity is often silent early but causes irreversible neurologic and cognitive damage, so screening and source removal are essential.
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Key points
Understand these first
A blood lead level (venous) of 3.5 mcg/dL or higher is elevated; there is no truly safe level.
The most common source is deteriorating lead-based paint and contaminated dust or soil in older housing.
Early signs are vague: irritability, anorexia, abdominal pain, constipation, fatigue, and developmental delays.
High levels cause encephalopathy: seizures, altered level of consciousness, ataxia, and increased intracranial pressure.
Lead interferes with hemoglobin synthesis, producing a microcytic, hypochromic anemia that mimics iron deficiency.
Chelation therapy (succimer oral, or calcium EDTA and dimercaprol/BAL for severe cases) is used at high levels.
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Nursing priorities
What to do, in order
Obtain a venous blood lead level to confirm an elevated capillary screen.
Identify and eliminate the lead source from the child's environment before discharge home.
Administer prescribed chelating agents and monitor renal function, hydration, and intake/output.
Promote adequate iron, calcium, and vitamin C intake, which reduce lead absorption.
Assess and document developmental and neurologic status and refer for early intervention.
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Red flags — report now
Escalate immediately
Seizures, lethargy, vomiting, or altered consciousness signal lead encephalopathy and increased ICP, a medical emergency.
Never discharge a child back to an unremediated lead-contaminated home.
Do not give BAL (dimercaprol) to a child with a peanut allergy, as it is prepared in peanut oil.
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Labs & values
Numbers to know
Blood lead level: 3.5 mcg/dL or higher is elevated (no safe level)
Hemoglobin: 11-13 g/dL in children (low with lead-induced anemia)
Microcytic, hypochromic RBCs with basophilic stippling
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Patient teaching
What patients must know
Wet-mop floors and wipe windowsills frequently to control lead dust; do not dry-sweep or sand old paint.
Wash the child's hands and toys often, especially before eating.
Run cold tap water for 1-2 minutes before use and never use hot tap water for formula.
Serve iron- and calcium-rich foods, which limit how much lead the body absorbs.
❓ Lead Poisoning: NCLEX FAQs
What are the priority nursing interventions for Lead Poisoning?
Obtain a venous blood lead level to confirm an elevated capillary screen. Identify and eliminate the lead source from the child's environment before discharge home. Administer prescribed chelating agents and monitor renal function, hydration, and intake/output. Promote adequate iron, calcium, and vitamin C intake, which reduce lead absorption.
What are the warning signs of Lead Poisoning a nurse must report?
Seizures, lethargy, vomiting, or altered consciousness signal lead encephalopathy and increased ICP, a medical emergency. Never discharge a child back to an unremediated lead-contaminated home. Do not give BAL (dimercaprol) to a child with a peanut allergy, as it is prepared in peanut oil.
What do I need to know about Lead Poisoning for the NCLEX?
A blood lead level (venous) of 3.5 mcg/dL or higher is elevated; there is no truly safe level. The most common source is deteriorating lead-based paint and contaminated dust or soil in older housing. Early signs are vague: irritability, anorexia, abdominal pain, constipation, fatigue, and developmental delays. High levels cause encephalopathy: seizures, altered level of consciousness, ataxia, and increased intracranial pressure.
What patient teaching is important for Lead Poisoning?
Wet-mop floors and wipe windowsills frequently to control lead dust; do not dry-sweep or sand old paint. Wash the child's hands and toys often, especially before eating. Run cold tap water for 1-2 minutes before use and never use hot tap water for formula. Serve iron- and calcium-rich foods, which limit how much lead the body absorbs.
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Quick Tip
A blood lead level (venous) of 3.5 mcg/dL or higher is elevated; there is no truly safe level.