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CPN: Pediatric Endocrine & Diabetes

Diabetes and other endocrine disorders require careful management and family teaching in children. These CPN questions cover type 1 diabetes, DKA, insulin, and education — each with a full rationale.

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  • 💡 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

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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 August 2026.

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Three CPN practice questions on cpn: pediatric endocrine & diabetes — tap an answer for instant feedback. The app has 2,200+, timed and scored.

Question 1

The parents of a 5-year-old recently diagnosed with type 1 diabetes report their child keeps apologizing for eating too much candy last Halloween. How should the nurse guide the parents to respond?

▸ Why C is the answer

Preschoolers frequently connect unrelated events, demonstrating transductive reasoning, and view chronic illness as a punishment for bad behavior. Parents must explicitly break this causal link. Option A is inappropriate because preschoolers cannot grasp complex autoimmune concepts. Option B allows the child to internalize unwarranted guilt and anxiety. Option D reinforces the child's magical thinking by treating candy as the dangerous culprit, worsening the misconception rather than alleviating the child's misplaced blame.

🔑 Key takeaway

Parents must explicitly break the causal link preschoolers create between past misbehavior and chronic illness.

Question 2

A 4-year-old with newly diagnosed type 1 diabetes is highly anxious about daily injections. Which intervention best utilizes therapeutic play to address this behavior?

▸ Why A is the answer

Syringe painting is an excellent form of therapeutic play that allows children to express emotions and gain mastery over medical equipment in a safe, non-threatening environment. By squirting paint with needleless syringes, the child desensitizes their fear of the object, making actual injections feel less intimidating. Option B is unsafe because real needles should never be used in play, even on inanimate objects. Option C is inappropriate for a preschooler's cognitive level, as they need concrete, play-based interventions rather than abstract physiological explanations about insulin. Option D represents medical preparation or procedural practice rather than undirected, expressive play, which is generally less effective for immediately reducing severe anxiety in a newly diagnosed preschooler.

🔑 Key takeaway

Syringe painting helps children gain mastery and reduce fear of medical equipment through expressive play.

Question 3

An 18-year-old with type 1 diabetes is leaving for college in three months and currently uses a continuous subcutaneous insulin infusion pump. Which assessment best evaluates their readiness for adult care transition?

▸ Why D is the answer

Transitioning to college and adult healthcare requires the late adolescent to demonstrate logistical independence, such as navigating insurance and independently ordering medical supplies. Assessing this practical skill ensures the patient can sustain their pump therapy without parental intervention, which is a hallmark of adult care transition. Option A is counterproductive because joint appointments with parents at this late stage hinder the patient's ability to communicate independently with providers. Option B is a passive intervention that provides resources but fails to actively evaluate the patient's actual readiness or capability to initiate care. Option C encourages ongoing parental surveillance, which undermines the patient's autonomy and delays the necessary shift toward complete self-management required in a college environment.

🔑 Key takeaway

Transitioning to adult care requires late adolescents to demonstrate logistical independence in managing their medical supplies.

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Question 1

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?

  • A) Give the full calculated meal bolus before the child starts eating.
  • B) Decrease the calculated meal bolus and administer after the child eats.✓
  • C) Suspend the basal insulin delivery for two full hours before eating.
  • D) Administer intramuscular glucagon immediately to prevent a severe hypoglycemic event today.

💡 Key Takeaway

Downward CGM trend arrows before a meal require a delayed and reduced insulin bolus to prevent hypoglycemia.

Show rationale

When a CGM displays double trend arrows pointing down, it indicates glucose is dropping rapidly, often by more than three milligrams per deciliter per minute. Giving the full pre-meal bolus (Option A) could cause profound hypoglycemia before the food absorbs. The safest approach is to decrease the bolus and give it after the child eats, ensuring the carbohydrates are actively absorbing to match the insulin action. Suspending basal insulin for two hours (Option C) is an overcorrection that will likely cause rebound hyperglycemia later. Administering intramuscular glucagon (Option D) is reserved for severe hypoglycemia involving unconsciousness or seizures, not for a conscious child with a normal glucose level who is about to eat a meal.

Question 2

A 17-year-old patient diagnosed with new-onset type 1 diabetes refuses insulin therapy, stating it interferes with their lifestyle. The parents demand the provider administer the insulin. How does the mature minor doctrine apply here?

  • A) The minor can refuse treatment due to their age.
  • B) The minor cannot refuse lifesaving treatment against parental wishes.✓
  • C) The provider must obtain a court order for insulin.
  • D) The parents must transfer medical custody to the state.

💡 Key Takeaway

The mature minor doctrine does not grant adolescents the right to refuse life-saving medical treatments.

Show rationale

The mature minor doctrine generally applies to a minor's ability to consent to specific treatments, but courts rarely allow minors to refuse life-saving treatment. When a minor refuses care for a highly lethal condition like type 1 diabetes, the parents retain the authority to consent to life-saving interventions. Option B is correct because the state's interest in preserving the minor's life overrides the adolescent's autonomy to refuse. Option A is incorrect because age alone does not grant the right to refuse life-saving care. Option C is incorrect; a court order is not immediately necessary when parents are present and consenting to the standard of care. Option D is incorrect as parents retain medical custody when advocating for life-saving treatment.

Question 3

A student with newly diagnosed type 1 diabetes is returning to a school lacking a full-time registered nurse. Which intervention is most appropriate for the pediatric nurse to implement regarding the student's safety?

  • A) Provide an emergency action plan to the unlicensed school staff.✓
  • B) Advise the parents to remain at school during the day.
  • C) Request homebound educational instruction until a school nurse is hired.
  • D) Instruct the classroom teacher to calculate the daily insulin doses.

💡 Key Takeaway

Emergency action plans guide unlicensed staff in recognizing and responding to life-threatening events when a nurse is absent.

Show rationale

For a student with newly diagnosed type 1 diabetes in a school lacking a full-time registered nurse, safety during an acute hypoglycemic event is the top priority. Providing an Emergency Action Plan ensures that unlicensed assistive personnel know exactly how to recognize and respond to life-threatening emergencies like severe hypoglycemia. Advising parents to remain at school is incorrect because it is unsustainable and violates the student's right to access education independently. Requesting homebound instruction is incorrect because diabetes can be safely managed in the school setting with proper planning, making homebound care overly restrictive. Instructing the classroom teacher to calculate insulin doses is incorrect because dose calculation requires clinical judgment, which cannot be legally delegated to unlicensed school staff in most jurisdictions.

Question 4

A 12-year-old patient is admitted with new-onset type 1 diabetes. The father speaks only Vietnamese, and the bilingual 12-year-old patient offers to translate the discharge instructions. What is the nurse's best action?

  • A) Obtain a certified medical interpreter for the education session.✓
  • B) Allow the patient to translate the basic discharge instructions.
  • C) Provide written translated materials instead of an interactive interpreter.
  • D) Ask an unlicensed bilingual employee to translate the instructions.

💡 Key Takeaway

Never use minors or family members to translate medical information due to safety and ethical concerns.

Show rationale

Families should never be used as interpreters, especially minors, due to the high risk of misinterpretation, emotional distress, and role reversal. Option A is correct because the nurse must secure a certified medical interpreter to ensure the father fully understands the complex instructions for new-onset type 1 diabetes. Option B is incorrect because relying on a twelve-year-old child to translate high-risk medical information compromises patient safety and places an unfair burden on the minor. Option C is incorrect because while written materials are helpful, they do not replace the need for interactive verbal education and the opportunity to ask questions. Option D is incorrect because an unlicensed bilingual employee is not trained in medical terminology or the ethical standards required for clinical translation.

Question 5

The parents of an 8-year-old who is newly diagnosed with type 1 diabetes ask how their child can participate in daily care. Which intervention is most developmentally appropriate for this patient?

  • A) Teach the child to calculate the daily carbohydrate ratios.
  • B) Allow the child to independently administer the insulin injections.
  • C) Encourage the child to choose the daily fingerstick locations.✓
  • D) Instruct the child to adjust the basal insulin dosages.

💡 Key Takeaway

School-age children begin shared management by making simple choices that provide autonomy without compromising safety.

Show rationale

School-age children are in the developmental stage of industry versus inferiority and benefit from having a sense of control over their care. Allowing an 8-year-old to choose their fingerstick locations provides appropriate autonomy without overwhelming their cognitive or psychomotor capacities, fostering early engagement in shared management. Option A is incorrect because calculating carbohydrate ratios requires abstract mathematical reasoning that an 8-year-old has not yet developed. Option B is unsafe, as independent insulin administration requires fine motor precision and safety awareness typically achieved closer to early adolescence. Option D involves complex clinical decision-making regarding basal adjustments, which remains the strict responsibility of the parents and healthcare team at this developmental stage.

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CPN · Exam Simulator

A fourteen-year-old is planning to eat a sixty-gram carbohydrate meal. The current pre-meal glucose is 110 mg/…

A) Give the full calculated meal bolus befo
B) Decrease the calculated meal bolus and a
C) Suspend the basal insulin delivery for t
D) Administer intramuscular glucagon immedi
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