CORRECT ANSWER WITH RATIONALE LATEST 2026
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The PNCB CPN exam is a comprehensive certification for registered nurses
specializing in pediatric care. Administered by the Pediatric Nursing
Certification Board. A passing scaled score of 400 is required. The exam
blueprint is divided into four domains: Health Promotion (23%), Assessment
(35%), Planning and Management (33%), and Professional Responsibilities
(9%). It validates the nurse's knowledge and clinical judgment in caring for
children from infancy through adolescence across various settings, including
acute care, primary care, and community health, demonstrating a
commitment to excellence in pediatric nursing.
1. The CPN exam is offered by which organization?
A. American Nurses Credentialing Center
B. Pediatric Nursing Certification Board
C. National Council of State Nursing Boards
D. American Academy of Pediatrics
Answer: B. Pediatric Nursing Certification Board
Rationale: The CPN is governed exclusively by the Pediatric Nursing Certification
Board (PNCB), which develops and administers the exam and maintains the
certification.
2. What is the total number of questions on the CPN exam?
A. 125
B. 150
C. 175
D. 200
Answer: C. 175
Rationale: The CPN exam always contains 175 multiple-choice questions, though
only 150 are scored. The remaining 25 are unscored pretest questions used for
future exam development.
3. What is the passing scaled score required to pass the CPN exam?
,A. 350
B. 400
C. 450
D. 500
Answer: B. 400
Rationale: The passing score for all versions of the CPN exam is 400, based on a
scaled scoring system ranging from 200 to 800.
4. Which domain accounts for the largest percentage of the CPN exam?
A. Health Promotion
B. Assessment
C. Planning and Management
D. Professional Responsibilities
Answer: B. Assessment
Rationale: Assessment makes up approximately 35% of the scored items,
representing the largest domain. Planning and Management is 33%, Health
Promotion is 23%, and Professional Responsibilities is only 9%.
5. Which of the following would be a key focus area within the "Assessment"
domain?
A. Teaching on growth and safety
B. Performing comprehensive physical and psychosocial assessments
C. Formulating measurable patient outcomes
D. Reporting suspected child abuse
Answer: B. Performing comprehensive physical and psychosocial assessments
Rationale: The Assessment domain includes performing comprehensive physical,
developmental, and psychosocial assessments to gather data about the child's
health status.
6. A nurse is planning care for a child. The process of formulating realistic and
measurable outcomes falls under which domain?
A. Assessment
B. Planning and Implementation
C. Evaluation
D. Professional Responsibilities
Answer: B. Planning and Implementation
Rationale: The formulation of realistic and measurable outcomes is specifically
listed as a skill within the Planning and Implementation domain, which represents
33% of the exam.
,7. Which of the following would be an example of an issue addressed under the
"Professional Responsibilities" domain?
A. Choosing an appropriate pain scale
B. Managing a child's chronic disease
C. Reporting a case of suspected child abuse
D. Formulating measurable patient outcomes
Answer: C. Reporting a case of suspected child abuse
Rationale: Professional Responsibilities (9% of the exam) includes addressing
ethical, legal, and professional responsibilities, such as mandatory reporting of
suspected abuse and maintaining professional boundaries.
8. For structuring a CPN review course or independent study, which resource does
the PNCB recommend?
A. Wong's Essentials of Pediatric Nursing
B. Bright Futures: Guidelines for Health Supervision
C. Pediatric Nursing Certification Review
D. Lexicomp Pediatric & Neonatal Dosage Handbook
Answer: C. Pediatric Nursing Certification Review
Rationale: PNCB specifically recommends "Pediatric Nursing Certification
Review" by Jakubik and Selekman for structuring a review course or independent
study.
9. A neonate with an inborn error of metabolism has a high ammonia level with
anorexia, lethargy, vomiting, and seizures. Which of the following is NOT an
inborn error of metabolism disease?
A. Argininosuccinase deficiency
B. Ornithine transcarbamylase deficiency
C. Phenylketonuria
D. Hypothyroidism
Answer: D. Hypothyroidism
Rationale: Hypothyroidism is an endocrine disorder, not an inborn error of
metabolism. Argininosuccinase deficiency, ornithine transcarbamylase deficiency,
and phenylketonuria are all metabolic disorders that can cause hyperammonemia.
10. A nurse is observing a child's development. Which is an example of
cephalocaudal development?
A. A child crawls before walking; walks before running; runs before jumping
B. A child lifts his head before lifting his shoulders; sits with support before sitting
without
C. A child rakes before developing a pincer grasp
, D. A child moves arms and legs before picking up small objects with fingers
Answer: B. A child lifts his head before lifting his shoulders; sits with support
before sitting without
Rationale: Cephalocaudal development proceeds from head to toe. Control of the
head develops before control of the shoulders and trunk, and sitting with support
precedes sitting independently.
11. Proximodistal development refers to growth that proceeds:
A. From head to toe
B. From the trunk to the tips of the extremities
C. From simple to complex
D. From general to specific
Answer: B. From the trunk to the tips of the extremities
Rationale: Proximodistal development proceeds from the center of the body
outward. Children gain control of their arms and legs before developing the fine
motor skills needed for finger movements.
12. In a 10-year-old child with a chronic illness, which activity best supports
Erikson's stage of industry?
A. Completing a school project
B. Learning to ride a bike
C. Playing on a sports team
D. Reading a picture book
Answer: A. Completing a school project
Rationale: According to Erikson, the school-age child (6-12 years) is in the
"industry vs. inferiority" stage. Success in school and completing tasks helps
develop a sense of accomplishment and competence. Completing a school project
is a school-age task that builds industry.
13. Which type of play would be most therapeutic for a hospitalized 4-year-old?
A. Peek-a-boo
B. Playing with a dollhouse
C. Board games with rules
D. Writing in a journal
Answer: B. Playing with a dollhouse
Rationale: Preschool-aged children (3-5 years) engage in dramatic and imitative
play, which helps them process experiences. A dollhouse allows for role-playing
medical themes in a safe, controlled manner.