CPNP-PC Certification Mastery: High-
Yield Practice Questions with
Evidence-Based Rationales for the
2026 PNCB Exam
Good communication among families, schools, and primary care providers
is an example of which ecological concept?
a. Microsystem
b. Mesosystem
c. Exosystem
d. Macrosystem
Answer: b. Mesosystem
Rationale: A mesosystem is the link or relationship between the
various settings (microsystems) within which a child exists (e.g., home,
school, day care). Communication between these settings exemplifies
this connection.
Which of the following findings would most likely be associated with
asymmetric intrauterine growth retardation (IUGR)?
a. Weight, length, and head circumference all ranging from the 3rd to
5th percentile
b. Heavy maternal smoking throughout pregnancy
c. Weight at the 3rd percentile and length at the 25th percentile
d. Gestational diabetes
Answer: c. Weight at the 3rd percentile and length at the 25th
, percentile
Rationale: Asymmetric IUGR is characterized by a significant
discrepancy between weight and length/head circumference
percentiles. The weight is disproportionately low compared to length.
The child at highest risk for having an elevated blood lead level is a:
a. 3-month-old exclusively breastfed infant
b. 6-month-old who lives in a home built after 1970
c. 2-year-old with iron deficiency anemia
d. 2-year-old who is a picky eater
Answer: c. 2-year-old with iron deficiency anemia
Rationale: Iron deficiency anemia is a significant risk factor for lead
poisoning because iron and lead share similar absorption pathways in
the gut; iron deficiency increases lead absorption. Toddlers are also at
higher risk due to hand-to-mouth behavior.
What is the recommended serving size of vegetables for a toddler?
a. 1 tablespoon
b. 1 teaspoon
c. ½ teaspoon
d. ½ tablespoon
Answer: a. 1 tablespoon
Rationale: A general guideline for toddler portion sizes is
approximately 1 tablespoon of each food per year of age. For a 1-
year-old, this would be 1 tablespoon.
The nurse is providing emergency care for an unconscious child who
presents with a head injury sustained in a fall. Which is the highest nursing
priority?
a. Establish an airway
, b. Assess neurological status
c. Stabilize the spine
d. Obtain vital signs
Answer: a. Establish an airway
Rationale: In any emergency, the priority is always airway, breathing,
and circulation (ABCs). Establishing a patent airway is the first and
most critical step.
The vital signs of a 4-year-old child with polyuria are: BP 80/40, Pulse 118,
and Respirations 24. The child's pedal pulses are present with a volume of
+1, and no edema is observed. What action should the nurse implement
first?
a. Insert an indwelling urinary catheter.
b. Start an IV infusion of normal saline.
c. Send a specimen to the lab for urinalysis.
d. Document the child's vital signs and pulses.
Answer: b. Start an IV infusion of normal saline.
Rationale: The child is hypotensive (80/40) with tachycardia,
indicating possible dehydration or shock. The priority is to restore
intravascular volume with a fluid bolus.
During administration of a blood transfusion, a child complains of chills,
headache, and nausea. Which action should the nurse implement first?
a. Start another IV of dextrose solution and stay with the child.
b. Continue the transfusion and monitor the child's vital signs.
c. Stop the infusion immediately.
d. Slow the infusion rate and notify the provider.
Answer: c. Stop the infusion immediately.
Rationale: These symptoms (chills, headache, nausea) are indicative of
, a potential transfusion reaction. The immediate priority is to stop the
transfusion to prevent further complications.
The PNP is evaluating a 2-year-old with a documented speech delay.
Screening assessments to evaluate motor skills and cognition are normal,
and the child passed a recent hearing test. What will the PNP do next?
a. Ask the child's parents whether they read to the child
b. Give parents educational materials to encourage speech
c. Refer the child to an early intervention program
d. Suggest that they purchase age-appropriate music videos
Answer: a. Ask the child's parents whether they read to the child
Rationale: With normal hearing and cognitive/motor development,
the next step is to assess environmental and psychosocial factors.
Asking about reading habits evaluates the child's language exposure
and parent-child interaction.
To diagnose diabetes, the NP knows a fasting serum glucose must be:
a. >126 mg/dL on 2 separate occasions
b. >200 mg/dL on 2 separate occasions
c. >126 mg/dL on 1 occasion
d. >200 mg/dL on 1 occasion
Answer: a. >126 mg/dL on 2 separate occasions
Rationale: The diagnostic criteria for diabetes mellitus include a
fasting plasma glucose ≥126 mg/dL on two separate occasions.
The mother of a 3-year-old child takes the child to play group once a week.
She expresses concern that the child plays with toys but does not interact
with the other toddlers. What will the PNP counsel the mother?
a. The child probably is very shy but will outgrow this tendency with
repeated exposure.
Yield Practice Questions with
Evidence-Based Rationales for the
2026 PNCB Exam
Good communication among families, schools, and primary care providers
is an example of which ecological concept?
a. Microsystem
b. Mesosystem
c. Exosystem
d. Macrosystem
Answer: b. Mesosystem
Rationale: A mesosystem is the link or relationship between the
various settings (microsystems) within which a child exists (e.g., home,
school, day care). Communication between these settings exemplifies
this connection.
Which of the following findings would most likely be associated with
asymmetric intrauterine growth retardation (IUGR)?
a. Weight, length, and head circumference all ranging from the 3rd to
5th percentile
b. Heavy maternal smoking throughout pregnancy
c. Weight at the 3rd percentile and length at the 25th percentile
d. Gestational diabetes
Answer: c. Weight at the 3rd percentile and length at the 25th
, percentile
Rationale: Asymmetric IUGR is characterized by a significant
discrepancy between weight and length/head circumference
percentiles. The weight is disproportionately low compared to length.
The child at highest risk for having an elevated blood lead level is a:
a. 3-month-old exclusively breastfed infant
b. 6-month-old who lives in a home built after 1970
c. 2-year-old with iron deficiency anemia
d. 2-year-old who is a picky eater
Answer: c. 2-year-old with iron deficiency anemia
Rationale: Iron deficiency anemia is a significant risk factor for lead
poisoning because iron and lead share similar absorption pathways in
the gut; iron deficiency increases lead absorption. Toddlers are also at
higher risk due to hand-to-mouth behavior.
What is the recommended serving size of vegetables for a toddler?
a. 1 tablespoon
b. 1 teaspoon
c. ½ teaspoon
d. ½ tablespoon
Answer: a. 1 tablespoon
Rationale: A general guideline for toddler portion sizes is
approximately 1 tablespoon of each food per year of age. For a 1-
year-old, this would be 1 tablespoon.
The nurse is providing emergency care for an unconscious child who
presents with a head injury sustained in a fall. Which is the highest nursing
priority?
a. Establish an airway
, b. Assess neurological status
c. Stabilize the spine
d. Obtain vital signs
Answer: a. Establish an airway
Rationale: In any emergency, the priority is always airway, breathing,
and circulation (ABCs). Establishing a patent airway is the first and
most critical step.
The vital signs of a 4-year-old child with polyuria are: BP 80/40, Pulse 118,
and Respirations 24. The child's pedal pulses are present with a volume of
+1, and no edema is observed. What action should the nurse implement
first?
a. Insert an indwelling urinary catheter.
b. Start an IV infusion of normal saline.
c. Send a specimen to the lab for urinalysis.
d. Document the child's vital signs and pulses.
Answer: b. Start an IV infusion of normal saline.
Rationale: The child is hypotensive (80/40) with tachycardia,
indicating possible dehydration or shock. The priority is to restore
intravascular volume with a fluid bolus.
During administration of a blood transfusion, a child complains of chills,
headache, and nausea. Which action should the nurse implement first?
a. Start another IV of dextrose solution and stay with the child.
b. Continue the transfusion and monitor the child's vital signs.
c. Stop the infusion immediately.
d. Slow the infusion rate and notify the provider.
Answer: c. Stop the infusion immediately.
Rationale: These symptoms (chills, headache, nausea) are indicative of
, a potential transfusion reaction. The immediate priority is to stop the
transfusion to prevent further complications.
The PNP is evaluating a 2-year-old with a documented speech delay.
Screening assessments to evaluate motor skills and cognition are normal,
and the child passed a recent hearing test. What will the PNP do next?
a. Ask the child's parents whether they read to the child
b. Give parents educational materials to encourage speech
c. Refer the child to an early intervention program
d. Suggest that they purchase age-appropriate music videos
Answer: a. Ask the child's parents whether they read to the child
Rationale: With normal hearing and cognitive/motor development,
the next step is to assess environmental and psychosocial factors.
Asking about reading habits evaluates the child's language exposure
and parent-child interaction.
To diagnose diabetes, the NP knows a fasting serum glucose must be:
a. >126 mg/dL on 2 separate occasions
b. >200 mg/dL on 2 separate occasions
c. >126 mg/dL on 1 occasion
d. >200 mg/dL on 1 occasion
Answer: a. >126 mg/dL on 2 separate occasions
Rationale: The diagnostic criteria for diabetes mellitus include a
fasting plasma glucose ≥126 mg/dL on two separate occasions.
The mother of a 3-year-old child takes the child to play group once a week.
She expresses concern that the child plays with toys but does not interact
with the other toddlers. What will the PNP counsel the mother?
a. The child probably is very shy but will outgrow this tendency with
repeated exposure.
