CPN EXAM ACTUAL EXAM 150 QUESTIONS
AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+.
SECTION 1: HEALTH PROMOTION & MAINTENANCE (Q1–Q30)
Q1: A nurse is assessing a 6-month-old infant during a well-child visit. Which finding would
the nurse identify as a potential red flag for developmental delay?
A. The infant rolls from front to back.
B. The infant sits with support.
C. The infant does not babble consonant sounds. [CORRECT]
D. The infant grasps a rattle.
Correct Answer: C
Rationale: By 6 months, infants should begin babbling consonant-vowel combinations (e.g.,
"ba-ba"). Lack of babbling is a red flag for speech/language delay. Rolling and sitting with
support are appropriate gross motor milestones for this age.
Q2: A parent asks the nurse when they should introduce solid foods to their 4-month-old
infant. What is the most appropriate response by the nurse?
A. "You can start rice cereal now since the baby is hungry."
B. "Wait until the infant is 6 months old and shows signs of readiness." [CORRECT]
C. "Start with pureed fruits immediately to prevent allergies."
D. "Introduce solids when the first tooth erupts."
Correct Answer: B
Rationale: The American Academy of Pediatrics recommends exclusive breastfeeding or
formula feeding for the first 6 months. Signs of readiness include good head control, loss of
tongue-thrust reflex, and interest in food.
Q3: A nurse is teaching a group of parents about toddler safety. Which statement by a parent
indicates a need for further teaching?
,A. "I keep all cleaning supplies in locked cabinets."
B. "I turn the water heater down to 120°F (49°C)."
C. "I let my toddler play in the bathtub while I answer the phone." [CORRECT]
D. "I use a rear-facing car seat until my child outgrows the limits."
Correct Answer: C
Rationale: Toddlers can drown in less than 2 inches of water. Constant supervision is required
during bath time. Turning the water heater down and locking cabinets are appropriate safety
measures.
Q4: A school-age child is admitted with a diagnosis of obesity. Which intervention is most
appropriate for the nurse to include in the care plan?
A. Restrict calorie intake to 1,000 calories per day.
B. Encourage the family to engage in physical activity together for 60 minutes daily.
[CORRECT]
C. Prohibit all sugary drinks and snacks immediately.
D. Refer the child to a weight-loss surgery program.
Correct Answer: B
Rationale: Family-centered interventions that promote gradual lifestyle changes, including
increased physical activity, are most effective for pediatric obesity. Extreme restriction is
harmful and unsustainable.
Q5: A nurse is administering the M-CHAT screening tool to the parents of an 18-month-old.
What is the primary purpose of this tool?
A. To assess gross motor development.
B. To screen for autism spectrum disorder. [CORRECT]
C. To evaluate hearing acuity.
D. To determine nutritional status.
Correct Answer: B
Rationale: The Modified Checklist for Autism in Toddlers (M-CHAT) is a validated screening
tool used to identify risk for autism spectrum disorder in children aged 16–30 months.
,Q6: A parent of a preschooler asks about night terrors. Which characteristic distinguishes
night terrors from nightmares?
A. The child remembers the dream vividly upon waking.
B. The child occurs during REM sleep.
C. The child is difficult to awaken and has no memory of the event. [CORRECT]
D. The child seeks comfort from the parent immediately.
Correct Answer: C
Rationale: Night terrors occur during non-REM sleep (stage 3 or 4). The child appears terrified
but is difficult to awaken and has no memory of the event the next morning. Nightmares
occur during REM sleep, and the child wakes up frightened and remembers the dream.
Q7: A nurse is providing anticipatory guidance to the parents of a 12-year-old female. Which
topic is most priority to discuss at this visit?
A. Introduction of solid foods.
B. Onset of menstruation and hygiene. [CORRECT]
C. Toilet training techniques.
D. Stranger anxiety.
Correct Answer: B
Rationale: Menarche typically occurs between ages 11 and 14. Discussing menstrual hygiene
and what to expect is crucial for early adolescents. Solid foods and toilet training are
infant/toddler topics.
Q8: A 2-year-old is brought to the clinic for a lead screening. Which factor places this child at
highest risk for lead poisoning?
A. Living in a house built in 1995.
B. Drinking filtered tap water.
C. Living in a home built before 1978 with peeling paint. [CORRECT]
D. Eating a diet high in iron and calcium.
Correct Answer: C
, Rationale: Homes built before 1978 likely contain lead-based paint. Peeling or chipping paint
creates dust that children ingest via hand-to-mouth behavior. High iron and calcium diets
actually help reduce lead absorption.
Q9: A nurse is assessing the growth of a 1-year-old infant. The birth weight was 7 lbs (3.2 kg).
What is the expected weight of the infant at this visit?
A. 10 lbs (4.5 kg)
B. 14 lbs (6.4 kg)
C. 21 lbs (9.5 kg) [CORRECT]
D. 28 lbs (12.7 kg)
Correct Answer: C
Rationale: Infants typically double their birth weight by 4–6 months and triple it by 1 year. 7
lbs x 3 = 21 lbs.
Q10: A parent asks the nurse about the recommended schedule for the HPV vaccine. What is
the correct information to provide?
A. It is given only after sexual debut.
B. It is recommended for males and females starting at age 11–12 years. [CORRECT]
C. It requires only one dose for full immunity.
D. It is contraindicated in children with mild illnesses.
Correct Answer: B
Rationale: The CDC recommends routine HPV vaccination for boys and girls at ages 11–12
years, though it can be started as early as age 9. Two doses are needed if started before age
15; three doses if started later.
Q11: A nurse is teaching a mother about introducing cow's milk to her infant. When is it safe
to introduce whole cow's milk?
A. At 6 months of age.
B. At 9 months of age.
C. At 12 months of age. [CORRECT]
D. At 18 months of age.
AND CORRECT DETAILED ANSWERS WITH
RATIONALES (VERIFIED ANSWERS) |ALREADY
GRADED A+.
SECTION 1: HEALTH PROMOTION & MAINTENANCE (Q1–Q30)
Q1: A nurse is assessing a 6-month-old infant during a well-child visit. Which finding would
the nurse identify as a potential red flag for developmental delay?
A. The infant rolls from front to back.
B. The infant sits with support.
C. The infant does not babble consonant sounds. [CORRECT]
D. The infant grasps a rattle.
Correct Answer: C
Rationale: By 6 months, infants should begin babbling consonant-vowel combinations (e.g.,
"ba-ba"). Lack of babbling is a red flag for speech/language delay. Rolling and sitting with
support are appropriate gross motor milestones for this age.
Q2: A parent asks the nurse when they should introduce solid foods to their 4-month-old
infant. What is the most appropriate response by the nurse?
A. "You can start rice cereal now since the baby is hungry."
B. "Wait until the infant is 6 months old and shows signs of readiness." [CORRECT]
C. "Start with pureed fruits immediately to prevent allergies."
D. "Introduce solids when the first tooth erupts."
Correct Answer: B
Rationale: The American Academy of Pediatrics recommends exclusive breastfeeding or
formula feeding for the first 6 months. Signs of readiness include good head control, loss of
tongue-thrust reflex, and interest in food.
Q3: A nurse is teaching a group of parents about toddler safety. Which statement by a parent
indicates a need for further teaching?
,A. "I keep all cleaning supplies in locked cabinets."
B. "I turn the water heater down to 120°F (49°C)."
C. "I let my toddler play in the bathtub while I answer the phone." [CORRECT]
D. "I use a rear-facing car seat until my child outgrows the limits."
Correct Answer: C
Rationale: Toddlers can drown in less than 2 inches of water. Constant supervision is required
during bath time. Turning the water heater down and locking cabinets are appropriate safety
measures.
Q4: A school-age child is admitted with a diagnosis of obesity. Which intervention is most
appropriate for the nurse to include in the care plan?
A. Restrict calorie intake to 1,000 calories per day.
B. Encourage the family to engage in physical activity together for 60 minutes daily.
[CORRECT]
C. Prohibit all sugary drinks and snacks immediately.
D. Refer the child to a weight-loss surgery program.
Correct Answer: B
Rationale: Family-centered interventions that promote gradual lifestyle changes, including
increased physical activity, are most effective for pediatric obesity. Extreme restriction is
harmful and unsustainable.
Q5: A nurse is administering the M-CHAT screening tool to the parents of an 18-month-old.
What is the primary purpose of this tool?
A. To assess gross motor development.
B. To screen for autism spectrum disorder. [CORRECT]
C. To evaluate hearing acuity.
D. To determine nutritional status.
Correct Answer: B
Rationale: The Modified Checklist for Autism in Toddlers (M-CHAT) is a validated screening
tool used to identify risk for autism spectrum disorder in children aged 16–30 months.
,Q6: A parent of a preschooler asks about night terrors. Which characteristic distinguishes
night terrors from nightmares?
A. The child remembers the dream vividly upon waking.
B. The child occurs during REM sleep.
C. The child is difficult to awaken and has no memory of the event. [CORRECT]
D. The child seeks comfort from the parent immediately.
Correct Answer: C
Rationale: Night terrors occur during non-REM sleep (stage 3 or 4). The child appears terrified
but is difficult to awaken and has no memory of the event the next morning. Nightmares
occur during REM sleep, and the child wakes up frightened and remembers the dream.
Q7: A nurse is providing anticipatory guidance to the parents of a 12-year-old female. Which
topic is most priority to discuss at this visit?
A. Introduction of solid foods.
B. Onset of menstruation and hygiene. [CORRECT]
C. Toilet training techniques.
D. Stranger anxiety.
Correct Answer: B
Rationale: Menarche typically occurs between ages 11 and 14. Discussing menstrual hygiene
and what to expect is crucial for early adolescents. Solid foods and toilet training are
infant/toddler topics.
Q8: A 2-year-old is brought to the clinic for a lead screening. Which factor places this child at
highest risk for lead poisoning?
A. Living in a house built in 1995.
B. Drinking filtered tap water.
C. Living in a home built before 1978 with peeling paint. [CORRECT]
D. Eating a diet high in iron and calcium.
Correct Answer: C
, Rationale: Homes built before 1978 likely contain lead-based paint. Peeling or chipping paint
creates dust that children ingest via hand-to-mouth behavior. High iron and calcium diets
actually help reduce lead absorption.
Q9: A nurse is assessing the growth of a 1-year-old infant. The birth weight was 7 lbs (3.2 kg).
What is the expected weight of the infant at this visit?
A. 10 lbs (4.5 kg)
B. 14 lbs (6.4 kg)
C. 21 lbs (9.5 kg) [CORRECT]
D. 28 lbs (12.7 kg)
Correct Answer: C
Rationale: Infants typically double their birth weight by 4–6 months and triple it by 1 year. 7
lbs x 3 = 21 lbs.
Q10: A parent asks the nurse about the recommended schedule for the HPV vaccine. What is
the correct information to provide?
A. It is given only after sexual debut.
B. It is recommended for males and females starting at age 11–12 years. [CORRECT]
C. It requires only one dose for full immunity.
D. It is contraindicated in children with mild illnesses.
Correct Answer: B
Rationale: The CDC recommends routine HPV vaccination for boys and girls at ages 11–12
years, though it can be started as early as age 9. Two doses are needed if started before age
15; three doses if started later.
Q11: A nurse is teaching a mother about introducing cow's milk to her infant. When is it safe
to introduce whole cow's milk?
A. At 6 months of age.
B. At 9 months of age.
C. At 12 months of age. [CORRECT]
D. At 18 months of age.
