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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

Every CPN question is written to the current exam outline for quick learning and a clear pass strategy.

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

101 of 150. A student with type 1 diabetes needs daily blood glucose monitoring but does not require specialized academic instruction. The school administrator asks the nurse how to secure federal funding to cover the nurse's time. Which response is most accurate?

Why C is the answer

Section 504 of the Rehabilitation Act is a civil rights law requiring schools to provide accommodations for students with disabilities who do not need special education. However, it is an unfunded mandate, meaning the district must provide the necessary nursing care without specific federal funds attached to the 504 plan. Billing Medicaid under IDEA provisions is incorrect because IDEA funding only applies if the student requires specialized academic instruction and has an IEP. Stating the district receives federal grants specifically for 504 plans is incorrect because no such dedicated federal funding exists for these civil rights accommodations. Utilizing Title IX health funding is incorrect because Title IX relates to preventing sex-based discrimination in education programs, not funding chronic disease management or nursing time.

🔑 Key takeaway

Section 504 requires necessary health accommodations but operates as an unfunded federal civil rights mandate.

Question 2

103 of 150. A 15-year-old newly diagnosed with type 1 diabetes admits to skipping insulin doses at school because they do not want to look different from their friends. Which intervention should the pediatric nurse practitioner recommend to support the adolescent's social and medical needs?

Why D is the answer

Enrolling the adolescent in peer support groups helps normalize the chronic illness experience and provides a safe space to navigate peer pressure. Restricting social events (Option A) harms normal adolescent social development. Structural family therapy (Option B) does not directly address school-based peer dynamics. Having school personnel administer doses (Option C) reduces the adolescent's autonomy and fails to build resilience against peer pressure.

🔑 Key takeaway

Peer support groups help adolescents with chronic illnesses navigate peer pressure and normalize their condition.

Question 3

105 of 150. A 5-year-old non-diabetic child presents with profound, unexplained hypoglycemia requiring continuous dextrose infusions. Laboratory results drawn during a severe hypoglycemic episode reveal elevated serum insulin levels with undetectable C-peptide. The father is the primary caregiver.

Why B is the answer

Endogenous insulin production naturally creates equal amounts of insulin and C-peptide. A lab result showing high insulin but undetectable C-peptide definitively proves the insulin was administered exogenously, pointing directly to medical child abuse. The nurse must assess the caregiver's access to medications and involve social work immediately. Option A is incorrect because an insulinoma would produce high levels of both insulin and C-peptide. Option C delays necessary protective action by pursuing a genetic metabolic disorder when the labs already confirm an exogenous source. Option D is inappropriate because the child does not have diabetes, and educating the suspected perpetrator ignores the immediate safety threat.

🔑 Key takeaway

High insulin with low C-peptide indicates exogenous insulin administration, requiring immediate safeguarding and investigation.

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Question 1

93 of 150. 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

108 of 150. 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

144 of 150. 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

83 of 150. 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

85 of 150. 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

93 of 150. A fourteen-year-old is planning to eat a sixty-gram carbohydrate meal. The current pre-meal glucose…

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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