An 8-year-old child of Cambodian descent has red, linear abrasions on the chest. The nurse needs to assess if this is a traditional healing practice or non-accidental trauma.

What types of home remedies have you used for this illness?

Did someone use a coin to rub your child's chest?

Why are there multiple red scratches on your child's chest?

Are you aware that skin rubbing causes these painful red bruises?

A 14-year-old adolescent is admitted with sudden onset fever, nuchal rigidity, and a petechial rash on the lower extremities. Lumbar puncture results are pending. Which infection control measure should the nurse implement?

Implement droplet precautions and require surgical masks for all staff.

Implement airborne precautions and require N95 respirators for all staff.

Implement contact precautions and require gowns and gloves for staff.

Implement standard precautions and require face shields for all staff.

An adolescent with spastic diplegia returns to the clinic one hour after an intrathecal baclofen pump refill. The patient now exhibits profound hypotonia, somnolence, and a respiratory rate of 10 breaths per minute. Which action should the nurse prioritize?

Prepare for respiratory support and anticipate an order for physostigmine.

Administer intravenous diazepam to prevent impending seizure activity immediately.

Initiate active cooling measures to manage the expected severe hyperthermia.

Reprogram the pump to deliver a rapid bolus of baclofen.

An 8-year-old child with ADHD takes a short-acting stimulant at breakfast and lunch. The teacher notes the child is highly disruptive during afternoon classes because the child forgets the lunch dose.

Consult the provider about prescribing a long-acting morning stimulant preparation.

Ask the teacher to administer the midday pill during class.

Double the morning medication dose to last through the afternoon.

Move the midday stimulant dose to immediately after school ends.

A 6-month-old with short bowel syndrome is advancing on continuous enteral feeds while weaning TPN. The nurse notes watery stools and perianal excoriation.

Check a stool sample for reducing substances.

Obtain a stool sample for bacterial culture.

Send a stool sample for fecal calprotectin.

Test a stool sample for occult blood.

A 4-year-old weaning from a prolonged morphine infusion has a WAT-1 score of five, accompanied by tachycardia and frequent yawning. Which intervention is most appropriate?

Administer a prescribed rescue opioid dose.

Accelerate the current opioid weaning plan.

Maintain the current opioid weaning plan.

Administer a prescribed rescue flumazenil dose.

A 14-year-old with FASD consistently fails to complete multi-step daily hygiene routines and expresses frustration with verbal reminders. Which approach should the nurse recommend to the caregiver?

Break the routine into single steps using a visual checklist.

Explain the long-term health risks of poor personal hygiene.

Allow the adolescent to skip routines to avoid daily conflict.

Restrict preferred recreational activities until the routine is completed.

A 5-year-old is at a well-child visit and asks, "Why do I need a shot?" while looking at the nurse preparing the injection. The nurse wants to use non-punitive language.

To teach your body how to fight off germs so you don't get very sick.

Because your school says you must have it to attend.

The doctor ordered it, and it's my job to give it to you.

All big kids get their shots without a fuss, so you can too.

A 16-year-old patient with cystic fibrosis frequently skips pancreatic enzymes when snacking with peers because carrying multiple pill bottles feels socially awkward and burdensome.

Consolidate snacks into larger meals to reduce required dosing frequencies.

Advise the patient to take all daily enzymes every morning.

Suggest avoiding all snacks to eliminate the need for enzymes.

Provide a discreet pill organizer for the patient to carry.

The parent of a 4-year-old child who weighs 38 lbs asks if it is time to transition out of their convertible car seat. The manufacturer's label indicates the rear-facing limit is 40 lbs. Which recommendation aligns with current AAP guidelines?

Keep the child rear-facing until reaching forty pounds.

Transition the child to a belt-positioning booster seat.

Turn the current seat to the forward-facing position.

Install a high-back booster using the lower anchors.

A nurse is reviewing the early intervention plan for a 20-month-old child diagnosed with a severe receptive-expressive language disorder. The parents are confused about why the plan emphasizes training the parents at home rather than focusing solely on clinical therapy sessions.

The plan is an Individualized Family Service Plan centered on natural environments.

The plan is an Individualized Education Program designed for school readiness.

The state program lacks funding to provide direct clinical speech therapy sessions.

The child is too young to participate in direct one-on-one speech therapy sessions.

A 12-month-old infant born at 39 weeks gestation is brought in for a well-child visit. The parent reports the infant feeds themselves Cheerios but uses a raking motion with the whole hand rather than the fingertips.

Refer the infant for an early intervention evaluation.

Reassure the parent this reflects typical motor development.

Recommend a specialized occupational therapy sensory integration assessment.

Schedule a targeted follow-up assessment in three months.

A 5-year-old with a mature gastrostomy tube presents to the clinic. The parent reports the child cries during bolus feedings. The nurse observes a small amount of beefy red, raised tissue around the stoma that bleeds slightly when touched.

Apply a silver nitrate stick to the overgrowth.

Cleanse the stoma site with hydrogen peroxide solution.

Apply a prescribed topical antifungal cream to the site.

Replace the gastrostomy tube with a smaller size.

A fourteen-year-old is planning to eat a sixty-gram carbohydrate meal. The current pre-meal glucose is 110 mg/dL, but the CGM shows double arrows pointing down. How should the nurse practitioner advise the patient to manage their meal bolus?

Decrease the calculated meal bolus and administer after the child eats.

Give the full calculated meal bolus before the child starts eating.

Suspend the basal insulin delivery for two full hours before eating.

Administer intramuscular glucagon immediately to prevent a severe hypoglycemic event today.

An 8-month-old infant is brought to the clinic for routine intramuscular immunizations and begins crying before the injection starts. Which intervention should the nurse use to distract the patient?

Shake a brightly colored rattle in the visual field.

Instruct the infant to take slow and deep breaths.

Describe a calming sensory environment in a soft voice.

Provide a complex puzzle to occupy the infant's hands.

How many questions are on the exam?

There are 175 total questions, but only 150 are scored. The other 25 are unscored pretest items.

How much time do I have to take the test?

You have exactly 180 minutes to complete the exam.

Is the test computer-adaptive?

No. It is a fixed-form exam, meaning every candidate sees the full 175 questions and it does not shut off early.

What is the pass rate?

The first-time pass rate was roughly 76–77% in 2022–2023, slightly down from about 78% in 2021.

Certified Pediatric Nurse Study Guide

You want to validate your pediatric nursing expertise. The CPN credential proves you have the specialized knowledge to care for children and their families. This guide breaks down exactly what to study and how to prepare.

2,200+

questions in the app

10+ yrs

exam-prep publishing

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Built to help you pass faster — by exam-prep publishers with 10+ years' experience

💡 Key Takeaways — the one transferable rule per question
🔍 Hint highlights — the decisive cue phrases in each stem
📖 Full rationales — why every option is right or wrong

Every CPN question is written to the current exam outline for quick learning and a clear pass strategy.

Written and reviewed by the LexPort exam-prep team, led by our Founder & Exam-Prep Lead. LexPort builds certification practice questions — this is exam-preparation material, not medical advice. Last reviewed July 2026.

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Before you start — where do you stand?

A study plan works better when you know your gaps. Three practice questions, two minutes. The app has 2,200+, timed and scored.

Question 1

A 6-year-old child with a refractory asthma exacerbation is prescribed a 40 mg/kg dose of intravenous magnesium sulfate. To maximize therapeutic benefit and minimize adverse effects, how should the nurse administer this medication?

▸ Why C is the answer

Intravenous magnesium sulfate for severe asthma exacerbations must be administered carefully to balance the bronchodilatory effects with the risk of cardiovascular compromise. Option C is correct because the standard administration guideline is to infuse the dose over 20 to 30 minutes using an infusion pump. This controlled rate prevents the sudden hypotension and bradycardia associated with rapid administration. Option A is incorrect because a rapid intravenous push can cause cardiovascular collapse and severe toxicity. Option B is incorrect because infusing it over four hours is too slow for an acute exacerbation where rapid bronchodilation is required, and a central line is not strictly necessary. Option D is incorrect because intramuscular administration is painful, erratically absorbed, and not the standard of care for acute status asthmaticus management.

🔑 Key takeaway

Intravenous magnesium sulfate for acute asthma should be infused over 20 to 30 minutes to prevent hypotension.

Question 2

A parent calls the clinic reporting their 8-year-old child had a tonsillectomy seven days ago. The child just vomited a small amount of bright red blood after eating toast.

▸ Why B is the answer

Secondary hemorrhage typically occurs between five and fourteen days postoperatively when the surgical eschar sloughs off. The presence of bright red blood indicates active bleeding, which is a medical emergency requiring immediate evaluation. Instructing the parent to bring the child to the emergency department is the safest and most appropriate action. Advising the parent to offer cold liquids delays necessary medical intervention for an active bleed. Reassuring the parent that this is expected is incorrect; while scabs do fall off, bright red emesis is never a normal finding. Recommending an antiemetic and bed rest fails to address the underlying active hemorrhage and risks severe volume depletion.

🔑 Key takeaway

Bright red emesis a week after tonsillectomy indicates a secondary hemorrhage requiring emergency evaluation.

Question 3

A 14-year-old post-spinal fusion patient requires a two-week wound check but lives three hours from the clinic. Which approach best facilitates appropriate follow-up care?

▸ Why B is the answer

For a patient who lives three hours from the clinic, traveling for a brief postoperative wound check places an undue burden on the family and increases the risk of missed follow-up. Option B leverages a hybrid telehealth visit to allow the specialized orthopedic team to assess the surgical site remotely using high-quality imaging, ensuring continuity without the travel strain. Option A is suboptimal because a local primary care provider may not be familiar with complex spinal fusion wound expectations or specific hardware complications. Option C ignores the geographic barrier, potentially leading to non-compliance or unnecessary physical discomfort for the recovering adolescent. Option D is unsafe, as delaying a wound check for a major orthopedic surgery until the one-month mark risks missing early signs of surgical site infection or delayed healing.

🔑 Key takeaway

Hybrid telehealth models effectively bridge geographic barriers while maintaining specialized continuity of care.

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What the Certification Is and Who It Serves

The credential is for registered nurses who work directly with pediatric patients. Candidates typically work in children's hospitals, outpatient clinics, schools, or home health settings. You must have an active RN license to apply. Earning this CPN certification shows employers and families that you meet rigorous national standards. It often leads to clinical ladder advancement or higher pay. For exact eligibility requirements regarding clinical practice hours, check the Pediatric Nursing Certification Board (PNCB) official handbook.

Exam Format and Scoring

You will face 175 total questions on this fixed-form test. This means every candidate answers the same number of items. The test does not shut off early based on your performance. Out of the 175 items, 150 are scored. The remaining 25 are unscored pretest items used to evaluate future exams. You have exactly 180 minutes to finish the entire test. Historically, the first-time pass rate was about 78% in 2021. It dropped slightly to roughly 76–77% in 2022–2023. You need a disciplined study strategy to pass.

Domain-by-Domain Breakdown

Assessment (35%): This is the largest section, featuring 53 items. You must know how to gather physical, psychosocial, and developmental data. Focus heavily on age-specific milestones and recognizing deviations from normal growth. Planning and Management (33%): With 50 items, this domain tests your ability to intervene. You will see questions on medication administration, pain management, and chronic illness care. Know your pediatric dosages and fluid resuscitation protocols. Health Promotion (23%): This section has 34 items. It covers immunizations, anticipatory guidance, and injury prevention. Review the current CDC immunization schedules and safety education for infants through adolescents. Professional Responsibilities (9%): The smallest section contains 13 items. It focuses on ethics, legal issues, and patient advocacy. Understand mandatory reporting laws and informed consent for minors.

Week-by-Week Study Plan

Weeks 1-2: Start with Assessment. Memorize developmental milestones from birth to adolescence. Use our 2200+ practice questions to drill physical exam findings and vital sign norms for different age groups. Weeks 3-4: Move to Planning and Management. Focus on respiratory and cardiovascular emergencies, as these are critical pediatric topics. Review fluid calculations and common pediatric medications. Weeks 5-6: Cover Health Promotion and Professional Responsibilities. Memorize vaccine schedules and safety guidelines. Take a full-length, 175-question timed simulation to build your testing stamina. Week 7: Review your weak areas. Do not learn new material this week. Focus on reading rationales for any questions you missed during your simulation.

Highest-Yield Topics and Common Mistakes

Developmental milestones are heavily tested. You must know when a child should sit, walk, and speak in sentences. Do not just memorize the months; understand what these milestones look like in clinical scenarios. Another high-yield area is respiratory distress. Know the difference between croup, asthma, and epiglottitis. Understand the progression from respiratory distress to respiratory failure in infants. A common mistake is treating pediatric patients like small adults. Their physiology is entirely different. Always apply pediatric-specific vital signs, fluid requirements, and communication strategies.

Test-Day Strategy

Pace yourself carefully. You have 180 minutes for 175 questions, giving you about one minute per item. Do not linger on difficult questions. Make your best guess, flag the item, and move forward. Read the last sentence of the question first. Pediatric scenarios can be long and include distracting family dynamics. Identify exactly what the question is asking before you read the answer choices. Remember that this is a fixed-form exam. You must answer every question. There is no penalty for guessing, so never leave an answer blank.

After the Exam

You will receive your pass/fail status shortly after finishing. If you pass, you can immediately start using the credential in your professional signature. If you do not pass, you will get a score report showing your performance in each domain. Use this data to adjust your study plan for your next attempt. Once certified, you must maintain your credential through continuing education. For specific recertification deadlines and accepted contact hours, check the Pediatric Nursing Certification Board (PNCB) official handbook.

FAQ

How many questions are on the exam?: There are 175 total questions, but only 150 are scored. The other 25 are unscored pretest items.
How much time do I have to take the test?: You have exactly 180 minutes to complete the exam.
Is the test computer-adaptive?: No. It is a fixed-form exam, meaning every candidate sees the full 175 questions and it does not shut off early.
What is the pass rate?: The first-time pass rate was roughly 76–77% in 2022–2023, slightly down from about 78% in 2021.

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CPN · Exam Simulator

An 8-year-old child of Cambodian descent has red, linear abrasions on the chest. The nurse needs to assess if …

A) Did someone use a coin to rub your child

B) Why are there multiple red scratches on

C) What types of home remedies have you use

D) Are you aware that skin rubbing causes t

Submit Answer

✓ CORRECT

C) What types of home remedies have you used for this

💡 KEY TAKEAWAY

Use open-ended, non-judgmental questions to assess for cultural healing practices without making parents defensive.

WHY

Asking an open-ended, non-judgmental question about home remedies allows the nurse practitioner to gather an accurate history while maintain…

Authoritative sources

PNCB — Pediatric Nursing Certification Board