Overview
Pediatric nursing requires understanding of age-specific growth and development milestones, immunization schedules, and unique physiological considerations that differ significantly from adult care. NCLEX-RN questions in this domain test the nurse's ability to recognize normal versus abnormal development, prioritize safety interventions, and apply pediatric-specific pharmacological principles. This guide organizes essential concepts to maximize exam readiness and clinical application.
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Growth & Development
Summary
Growth and development in children follows predictable, sequential patterns. Nurses must know key milestones to identify delays early. Erikson's psychosocial stages provide the framework for understanding behavioral and emotional development, while physical milestones serve as benchmarks for anticipatory guidance.
Physical Milestones
| Age | Key Milestone |
|-----|--------------|
| 4–6 months | Doubles birth weight |
| 12–15 months | Walks independently |
| 12–18 months | Anterior fontanelle closes |
| 2 years | Uses 50+ words; two-word phrases |
• Infant weight gain: 150–210 g (5–7 oz) per week in the first 6 months
• Anterior fontanelle: Closes between 12–18 months; a bulging fontanelle = increased ICP; a sunken fontanelle = dehydration
• Posterior fontanelle: Closes by 2–3 months (often tested as a distractor)
Erikson's Psychosocial Stages (Pediatric Focus)
• Infant (0–1 yr): Trust vs. Mistrust — consistent caregiving builds trust
• Toddler (1–3 yr): Autonomy vs. Shame and Doubt — independence, self-control, toilet training
• Preschool (3–6 yr): Initiative vs. Guilt — curiosity, imaginative play
• School-age (6–12 yr): Industry vs. Inferiority — mastery of skills, peer relationships
• Adolescent (12–18 yr): Identity vs. Role Confusion — forming self-identity
Language Development
• 12 months: 1–3 words (mama, dada with meaning)
• 18 months: ~10–20 words
• 2 years: ≥50 words; two-word combinations ("more milk")
• 3 years: 3-word sentences; strangers understand ~75% of speech
Types of Play by Age
• Solitary play: Infants
• Parallel play: Toddlers (2 years) — plays alongside but not with others
• Associative play: Preschoolers — interacts with peers without organized goals
• Cooperative play: School-age — organized, rule-based games
Key Terms
• Milestone: An expected skill or behavior at a specific developmental age
• Parallel play: Play style where children engage in similar activities side-by-side without direct interaction
• Fontanelle: Soft membranous gaps between cranial bones; serves as a clinical assessment point
⚠️ Watch Out For
• The posterior fontanelle closes much earlier (2–3 months) than the anterior (12–18 months) — exam questions may try to confuse these
• A 2-year-old who is NOT using two-word phrases requires further developmental evaluation — flag this as a concern
• Parallel play is normal for toddlers; do NOT interpret it as a social problem
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Immunizations & Preventive Care
Summary
Vaccine schedules follow CDC/ACIP guidelines and are a frequent NCLEX topic. Key considerations include the timing of specific vaccines, contraindications in special populations (especially immunocompromised children), and parent education.
Key Vaccine Schedule Points
| Vaccine | Schedule |
|---------|----------|
| Hepatitis B | Birth (within 24 hrs), 1–2 months, 6–18 months |
| MMR | 12–15 months; 4–6 years (booster) |
| Varicella | 12–15 months; 4–6 years |
| DTaP | 2, 4, 6 months; 15–18 months; 4–6 years |
| Hib | 2, 4, 6 months; 12–15 months |
| IPV | 2, 4 months; 6–18 months; 4–6 years |
Live vs. Inactivated Vaccines
• Live attenuated vaccines (require intact immune system):
- MMR, Varicella, Rotavirus, Intranasal Influenza (FluMist), Yellow Fever, Oral Typhoid
• Inactivated/killed vaccines (generally safe for immunocompromised):
- IPV, Hepatitis A & B, DTaP, Hib, PCV, Inactivated Influenza (flu shot)
Key Terms
• Live attenuated vaccine: Contains weakened live pathogen; contraindicated in immunocompromised patients
• Herd immunity: Protection of unvaccinated individuals when a sufficient portion of the population is immune
• Contraindication: A condition making a treatment inadvisable
⚠️ Watch Out For
• Never give live vaccines (MMR, Varicella, intranasal flu) to immunocompromised children, pregnant individuals, or those on high-dose steroids/chemotherapy
• Hepatitis B begins at birth, not at the 2-month well visit — this is a commonly missed detail
• Mild illness (e.g., low-grade fever, cold) is NOT a contraindication to vaccination; severe illness is
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Common Pediatric Illnesses
Summary
Pediatric illnesses often present with unique clinical features that differ from adult manifestations. Priority nursing actions frequently focus on airway management, hydration, and infection control. Recognizing distinguishing features between similar conditions is critical for NCLEX success.
Respiratory Illnesses: Croup vs. Epiglottitis
| Feature | Croup (Laryngotracheobronchitis) | Epiglottitis |
|---------|----------------------------------|--------------|
| Cause | Viral (Parainfluenza) | Bacterial (H. influenzae type B) |
| Onset | Gradual | Sudden/Rapid |
| Cough | Barking, seal-like cough | Absent or muffled |
| Fever | Low-grade | High (≥39°C) |
| Position | Variable | Tripod position |
| Drooling | Absent | Present |
| Treatment | Racemic epinephrine, steroids, cool mist | Immediate airway management; antibiotics |
| Priority | Reduce airway edema | Do NOT examine throat or lay supine |
Kawasaki Disease
Classic Diagnostic Criteria: Fever ≥5 days PLUS at least 4 of the following (CRASH mnemonic):
• C — Conjunctival injection (bilateral, non-purulent)
• R — Rash (polymorphous, truncal)
• A — Adenopathy (cervical lymph node ≥1.5 cm)
• S — Strawberry tongue / oral changes (cracked red lips, erythematous pharynx)
• H — Hand/foot changes (erythema, edema, desquamation of palms/soles)
Treatment: High-dose aspirin (anti-inflammatory — exception to the aspirin rule) + IVIG (IV immunoglobulin)
Priority Complication: Coronary artery aneurysms
Scarlet Fever
• Cause: Group A Streptococcus (GAS)
• Signs: Strawberry tongue, sandpaper-like diffuse red rash that blanches, fever, pharyngitis
• Treatment: Penicillin or amoxicillin (first-line)
• Complication if untreated: Rheumatic fever, glomerulonephritis
Meningitis
• Classic triad: Fever, nuchal rigidity, altered mental status
• Additional signs: Petechiae/purpura (bacterial), photophobia, positive Kernig's and Brudzinski's signs
• Lumbar puncture position: Lateral recumbent (fetal) position — knees to chest, neck flexed
• Priority: Administer antibiotics promptly; implement droplet precautions (bacterial)
Sickle Cell Disease – Vaso-Occlusive Crisis
Priority Nursing Interventions (in order):
1. IV hydration (dilutes blood, reduces sickling)
2. Pain management (opioids for severe pain)
3. Oxygen (only if hypoxic — SpO₂ <95%)
4. Bedrest, warmth, monitoring
Key Terms
• Tripod position: Leaning forward on hands with neck extended to maximize airway opening; seen in epiglottitis
• Vaso-occlusive crisis: Sickling of red blood cells causing microvascular obstruction and ischemic pain
• Desquamation: Peeling of skin from hands/feet; a late sign of Kawasaki disease
⚠️ Watch Out For
• In epiglottitis: NEVER lay the child flat, examine the throat with a tongue depressor, or attempt IV access aggressively — any of these can cause complete airway obstruction
• Aspirin is contraindicated in most pediatric viral illnesses (Reye's syndrome) — but it is used therapeutically in Kawasaki disease (anti-inflammatory dose)
• The barking cough = CROUP, not epiglottitis — this distinction is heavily tested
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Pediatric Medication Safety
Summary
Pediatric pharmacology requires precise weight-based dosing and heightened awareness of age-specific risks. Nurses must verify doses using mg/kg parameters and recognize medications that carry special risks in the pediatric population.
Dosing Principles
• Gold standard: Dose by weight in kilograms (mg/kg)
• Always verify: dose ordered ÷ weight in kg = within safe mg/kg range
• Never estimate dose by age alone
• Double-check high-alert medications: opioids, anticoagulants, insulin, electrolytes
Acetaminophen Safety
• Safe dose: 10–15 mg/kg every 4–6 hours
• Maximum daily dose: 75 mg/kg/day, not to exceed 5 doses in 24 hours
• Overdose risk: Hepatotoxicity (liver failure)
• Antidote: N-acetylcysteine (NAC)
Aspirin & Reye's Syndrome
• Avoid aspirin in children/adolescents with viral illnesses (especially influenza, varicella)
• Reye's syndrome: Acute hepatic failure + encephalopathy — potentially fatal
• Aspirin IS used in Kawasaki disease (exception — for anti-inflammatory and antiplatelet effects)
IM Injection Sites by Age
| Age Group | Preferred Site |
|-----------|---------------|
| Infants (<12 months) | Vastus lateralis (anterolateral thigh) |
| Toddlers/Children | Vastus lateralis or deltoid (if adequate muscle mass) |
| Adolescents/Adults | Deltoid (preferred for most vaccines) |
Why vastus lateralis for infants? Well-developed muscle, no major nerves or vessels in the area, and accessible.
Key Terms
• Hepatotoxicity: Liver damage or dysfunction caused by a drug or toxin
• Reye's syndrome: A rare but serious condition causing brain and liver damage, associated with aspirin use during viral illness in children
• Vastus lateralis: Outer quadriceps muscle of the thigh; preferred IM site for infants
⚠️ Watch Out For
• Always convert weight to kilograms before calculating pediatric doses (1 kg = 2.2 lbs)
• The deltoid is appropriate only when adequately developed — typically not used in infants
• Parents may not recognize children's products (liquid Tylenol, cold syrups) as containing acetaminophen — overdose from combination products is common
• Never use IV iron dextran without proper dilution or in rapid bolus in pediatric patients
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Pediatric Emergency & Safety
Summary
Pediatric emergencies require rapid, systematic responses with age-appropriate techniques. Key differences from adults include CPR ratios, medication routes, and the use of specialized tools like the Broselow tape. Recognizing early warning signs of deterioration — especially increased ICP and anaphylaxis — is critical.
Infant CPR (Two-Rescuer)
| Component | Infant (<1 year) | Child (1 year–puberty) |
|-----------|-----------------|------------------------|
| Compressions:Ventilations (2 rescuers) | 15:2 | 15:2 |
| Compressions:Ventilations (1 rescuer) | 30:2 | 30:2 |
| Compression depth | 1.5 inches (4 cm) | 2 inches (5 cm) |
| Hand placement | 2 fingers below nipple line | Heel of one or two hands |
| Compression rate | 100–120/min | 100–120/min |
Anaphylaxis Management
First-line treatment:
• Epinephrine 0.01 mg/kg of 1:1,000 solution IM into the anterolateral thigh
• Maximum single dose: 0.5 mg
Subsequent interventions:
• Diphenhydramine (antihistamine — NOT first-line, adjunct only)
• Albuterol (bronchospasm)
• Corticosteroids (delayed reaction prevention)
• IV fluids for hypotension
Poisoning/Ingestion Response
1. Call Poison Control: 1-800-222-1222 (first action)
2. Do NOT induce vomiting — risk of aspiration and esophageal injury
3. Activated charcoal may be used in select cases per Poison Control guidance
4. Monitor airway, breathing, circulation
Broselow Tape
• Used for children ≤36 kg (approximately ≤12 years)
• Estimates weight based on height/length
• Color-coded for medication dosing and equipment sizing (ET tube, defibrillation)
• Used when weight is unknown in emergency settings
Signs of Increased Intracranial Pressure (ICP) in Infants
Early Signs:
• Bulging, tense anterior fontanelle (key infant-specific sign)
• High-pitched cry
• Irritability, lethargy
• Poor feeding
Late Signs (Cushing's Triad):
• Hypertension (widening pulse pressure)
• Bradycardia
• Irregular respirations
• Sunset sign (eyes deviated downward, sclera visible above iris)
Key Terms
• Broselow tape: Color-coded length-based tool for estimating pediatric weight and guiding emergency interventions
• Anaphylaxis: Severe, life-threatening systemic allergic reaction requiring immediate epinephrine
• Cushing's Triad: Late sign of increased ICP: hypertension + bradycardia + irregular respirations
• Sunset sign: Downward deviation of the eyes seen in infants with increased ICP or hydrocephalus
⚠️ Watch Out For
• Two-rescuer infant CPR = 15:2, NOT 30:2 — a very common NCLEX trap
• Epinephrine is ALWAYS first for anaphylaxis — not diphenhydramine (Benadryl)
• Never recommend inducing vomiting for poisoning ingestion — this is outdated and potentially harmful
• A bulging fontanelle in a crying infant may be falsely positive — always assess when the infant is calm and upright
• The Broselow tape estimates weight by height, not age — do not confuse these
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Quick Review Checklist
Use this checklist to confirm you can confidently answer each concept before your exam: