CERTIFIED PEDIATRIC NURSE (CPN) COMPREHENSIVE PRACTICE
EXAM: 100 HIGH-YIELD QUESTIONS WITH DETAILED CLINICAL
RATIONALES FOR MASTERY AND EXAM SUCCESS
QUESTION 1
A 4-year-old child is admitted with severe dehydration caused by acute gastroenteritis. Which
assessment finding should the nurse recognize as the MOST concerning?
A. Dry mucous membranes B. Decreased tears when crying C. Delayed capillary refill greater
than 4 seconds D. Sunken eyes
Correct Answer:
C. Delayed capillary refill greater than 4 seconds
Rationale:
Delayed capillary refill greater than 4 seconds indicates poor peripheral perfusion and possible
circulatory compromise associated with severe dehydration and impending shock. In pediatric
patients, prolonged capillary refill is a critical assessment finding because children can
deteriorate rapidly once compensatory mechanisms fail.
Dry mucous membranes, decreased tears, and sunken eyes are common findings in
dehydration, but delayed capillary refill reflects worsening cardiovascular compromise and
inadequate tissue perfusion.
The nurse should immediately assess heart rate, blood pressure, urine output, mental status,
and prepare for rapid fluid replacement.
,QUESTION 2
A nurse is teaching parents about febrile seizures. Which statement by the parents indicates
correct understanding?
A. “Febrile seizures usually cause permanent brain damage.” B. “Our child will need lifelong
anticonvulsant therapy.” C. “Febrile seizures are commonly associated with rapid increases in
temperature.” D. “Any child with a febrile seizure has epilepsy.”
Correct Answer:
C. “Febrile seizures are commonly associated with rapid increases in temperature.”
Rationale:
Febrile seizures commonly occur in young children between 6 months and 5 years of age and
are often triggered by a rapid rise in body temperature rather than the degree of fever itself.
Most febrile seizures are benign and do not cause permanent neurological damage. Children
usually recover completely without long-term anticonvulsant therapy. Having a febrile seizure
does not automatically mean the child has epilepsy.
Parent education should include:
• Protecting the child from injury during a seizure
• Positioning the child on the side
• Avoiding insertion of objects into the mouth
• Monitoring seizure duration
• Seeking emergency care for prolonged seizures
QUESTION 3
A child with asthma is experiencing wheezing and shortness of breath despite using a rescue
inhaler. Which assessment finding indicates worsening respiratory distress?
A. Expiratory wheezing B. Productive cough C. Diminished breath sounds D. Mild tachycardia
Correct Answer:
C. Diminished breath sounds
,Rationale:
Diminished breath sounds in a child experiencing an asthma exacerbation are highly concerning
because they may indicate minimal air movement due to severe bronchoconstriction and airway
obstruction.
Children with severe asthma may initially present with wheezing, but as airway obstruction
worsens, wheezing may decrease because airflow becomes critically reduced. This is considered
a medical emergency.
Additional signs of severe respiratory distress include:
• Nasal flaring
• Retractions
• Cyanosis
• Inability to speak
• Altered mental status
• Decreased oxygen saturation
Immediate interventions include oxygen administration, bronchodilator therapy, corticosteroids,
and close respiratory monitoring.
QUESTION 4
A nurse is caring for an infant diagnosed with pyloric stenosis. Which symptom should the nurse
expect?
A. Bilious vomiting B. Projectile vomiting after feeding C. Bloody diarrhea D. Severe abdominal
distention
Correct Answer:
B. Projectile vomiting after feeding
Rationale:
Pyloric stenosis is a condition in which hypertrophy of the pyloric muscle obstructs gastric
emptying. The classic symptom is projectile, non-bilious vomiting after feeding.
Because the obstruction occurs before the duodenum, bile is not present in the vomit. Infants
often remain hungry after vomiting and may display signs of dehydration and weight loss.
, Other assessment findings may include:
• Palpable olive-shaped mass in the abdomen
• Visible peristaltic waves
• Poor weight gain
• Electrolyte imbalances
Treatment typically involves surgical pyloromyotomy.
QUESTION 5
A pediatric nurse is assessing developmental milestones in a 12-month-old infant. Which
behavior is expected at this age?
A. Speaking full sentences B. Walking independently C. Riding a tricycle D. Drawing geometric
shapes
Correct Answer:
B. Walking independently
Rationale:
Most 12-month-old infants begin walking independently or taking a few unsupported steps.
Gross motor development at this age includes pulling to stand, cruising along furniture, and
beginning independent ambulation.
Developmental milestones are important indicators of neurological and physical growth.
Expected milestones at 12 months include:
• Saying simple words like “mama” or “dada”
• Using pincer grasp
• Standing alone briefly
• Waving goodbye
• Responding to simple commands
Riding a tricycle and drawing geometric shapes occur later in toddler and preschool years.
EXAM: 100 HIGH-YIELD QUESTIONS WITH DETAILED CLINICAL
RATIONALES FOR MASTERY AND EXAM SUCCESS
QUESTION 1
A 4-year-old child is admitted with severe dehydration caused by acute gastroenteritis. Which
assessment finding should the nurse recognize as the MOST concerning?
A. Dry mucous membranes B. Decreased tears when crying C. Delayed capillary refill greater
than 4 seconds D. Sunken eyes
Correct Answer:
C. Delayed capillary refill greater than 4 seconds
Rationale:
Delayed capillary refill greater than 4 seconds indicates poor peripheral perfusion and possible
circulatory compromise associated with severe dehydration and impending shock. In pediatric
patients, prolonged capillary refill is a critical assessment finding because children can
deteriorate rapidly once compensatory mechanisms fail.
Dry mucous membranes, decreased tears, and sunken eyes are common findings in
dehydration, but delayed capillary refill reflects worsening cardiovascular compromise and
inadequate tissue perfusion.
The nurse should immediately assess heart rate, blood pressure, urine output, mental status,
and prepare for rapid fluid replacement.
,QUESTION 2
A nurse is teaching parents about febrile seizures. Which statement by the parents indicates
correct understanding?
A. “Febrile seizures usually cause permanent brain damage.” B. “Our child will need lifelong
anticonvulsant therapy.” C. “Febrile seizures are commonly associated with rapid increases in
temperature.” D. “Any child with a febrile seizure has epilepsy.”
Correct Answer:
C. “Febrile seizures are commonly associated with rapid increases in temperature.”
Rationale:
Febrile seizures commonly occur in young children between 6 months and 5 years of age and
are often triggered by a rapid rise in body temperature rather than the degree of fever itself.
Most febrile seizures are benign and do not cause permanent neurological damage. Children
usually recover completely without long-term anticonvulsant therapy. Having a febrile seizure
does not automatically mean the child has epilepsy.
Parent education should include:
• Protecting the child from injury during a seizure
• Positioning the child on the side
• Avoiding insertion of objects into the mouth
• Monitoring seizure duration
• Seeking emergency care for prolonged seizures
QUESTION 3
A child with asthma is experiencing wheezing and shortness of breath despite using a rescue
inhaler. Which assessment finding indicates worsening respiratory distress?
A. Expiratory wheezing B. Productive cough C. Diminished breath sounds D. Mild tachycardia
Correct Answer:
C. Diminished breath sounds
,Rationale:
Diminished breath sounds in a child experiencing an asthma exacerbation are highly concerning
because they may indicate minimal air movement due to severe bronchoconstriction and airway
obstruction.
Children with severe asthma may initially present with wheezing, but as airway obstruction
worsens, wheezing may decrease because airflow becomes critically reduced. This is considered
a medical emergency.
Additional signs of severe respiratory distress include:
• Nasal flaring
• Retractions
• Cyanosis
• Inability to speak
• Altered mental status
• Decreased oxygen saturation
Immediate interventions include oxygen administration, bronchodilator therapy, corticosteroids,
and close respiratory monitoring.
QUESTION 4
A nurse is caring for an infant diagnosed with pyloric stenosis. Which symptom should the nurse
expect?
A. Bilious vomiting B. Projectile vomiting after feeding C. Bloody diarrhea D. Severe abdominal
distention
Correct Answer:
B. Projectile vomiting after feeding
Rationale:
Pyloric stenosis is a condition in which hypertrophy of the pyloric muscle obstructs gastric
emptying. The classic symptom is projectile, non-bilious vomiting after feeding.
Because the obstruction occurs before the duodenum, bile is not present in the vomit. Infants
often remain hungry after vomiting and may display signs of dehydration and weight loss.
, Other assessment findings may include:
• Palpable olive-shaped mass in the abdomen
• Visible peristaltic waves
• Poor weight gain
• Electrolyte imbalances
Treatment typically involves surgical pyloromyotomy.
QUESTION 5
A pediatric nurse is assessing developmental milestones in a 12-month-old infant. Which
behavior is expected at this age?
A. Speaking full sentences B. Walking independently C. Riding a tricycle D. Drawing geometric
shapes
Correct Answer:
B. Walking independently
Rationale:
Most 12-month-old infants begin walking independently or taking a few unsupported steps.
Gross motor development at this age includes pulling to stand, cruising along furniture, and
beginning independent ambulation.
Developmental milestones are important indicators of neurological and physical growth.
Expected milestones at 12 months include:
• Saying simple words like “mama” or “dada”
• Using pincer grasp
• Standing alone briefly
• Waving goodbye
• Responding to simple commands
Riding a tricycle and drawing geometric shapes occur later in toddler and preschool years.
