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Pediatric Cystic Fibrosis Practice Questions

Cystic fibrosis care is a daily balancing act between the lungs and the gut, and the exam tests whether you understand both halves. These questions cover airway clearance and chest physiotherapy, pancreatic enzyme replacement and its timing, the high-calorie nutritional needs these children have, and the infection-prevention rules that protect them from each other.

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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 September 2026.

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Test yourself: Cystic Fibrosis

Three CPN practice questions on cystic fibrosis — tap an answer for instant feedback. The app has 2,200+, timed and scored.

Question 1

During morning rounds for a toddler with newly diagnosed cystic fibrosis, the pulmonologist uses complex medical terminology. The parents appear visibly confused and withdrawn.

Why B is the answer

The nurse acts as an advocate and facilitator during rounds. Clarifying terms in real time using plain language keeps the parents engaged and promotes shared decision-making. Interrupting aggressively disrupts team dynamics and unprofessional behavior can increase parental anxiety. Waiting until rounds finish excludes the parents from the immediate planning process and leaves them feeling marginalized. Providing a dictionary places an inappropriate burden on the parents to decipher complex information independently when they are already vulnerable.

🔑 Key takeaway

Nurses must translate medical jargon during rounds to ensure parents can actively participate in shared decision-making.

Question 2

A clinic nurse is educating the parents of a 6-month-old infant with cystic fibrosis who is starting solid foods. Which instruction regarding pancreatic enzyme replacement therapy should the nurse provide?

Why C is the answer

Enzymes must be administered intact because crushing them destroys the enteric coating, leading to inactivation by stomach acid. Mixing them with an acidic puree like applesauce protects this coating. Option A is incorrect because mixing enzymes in a full bottle risks incomplete dosing if the infant does not finish the feeding. Option B is incorrect because crushing the beads ruins their protective layer and can cause oral ulcerations. Option D is incorrect because alkaline environments prematurely dissolve the coating before the enzymes reach the duodenum, rendering them ineffective.

🔑 Key takeaway

Pancreatic enzymes must be given intact in acidic foods to preserve their enteric coating and efficacy.

Question 3

A 15-year-old with fibromyalgia is participating in a multidisciplinary pain rehabilitation program. The nurse is evaluating the primary success metric for this specific patient. Which outcome indicates the most successful management?

Why B is the answer

The primary goal of chronic pain management is functional restoration, such as returning to school, socializing, and completing daily activities, even if some pain persists. Option B correctly identifies this metric. Option A is the standard goal for acute pain but is often an unachievable metric for chronic pain conditions like fibromyalgia. Option C is incorrect because many patients still require baseline pharmacological support alongside behavioral therapies. Option D is impossible to guarantee, as acute pain flares can and do occur despite excellent chronic management.

🔑 Key takeaway

The primary goal of chronic pain management is restoring daily function, not completely eliminating pain.

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Question 1

111 of 150. A 3-year-old child with chronic daily cough and nasal polyps has a sweat chloride level of 72 mmol/L on a properly collected sample.

  • A) Confirm the cystic fibrosis diagnosis and refer to a specialist.
  • B) Classify the result as indeterminate and order a repeat test.
  • C) Reassure the family that this is a normal developmental finding.
  • D) Prescribe daily oral corticosteroids to reduce the nasal polyp size.

💡 Key Takeaway

A sweat chloride level of 60 mmol/L or greater confirms the diagnosis of cystic fibrosis.

Show rationale

A sweat chloride level of 60 mmol/L or greater on a valid sample is diagnostic for cystic fibrosis. Given the child's clinical symptoms of chronic cough and nasal polyps, the correct action is to confirm the diagnosis and immediately refer the patient to an accredited cystic fibrosis care center for comprehensive management. Classifying the result as indeterminate is incorrect because it exceeds the 59 mmol/L threshold. Reassuring the family is inappropriate for a positive diagnostic test. Prescribing oral corticosteroids is not the primary intervention for a new cystic fibrosis diagnosis.

Question 2

36 of 150. A 16-year-old with end-stage cystic fibrosis has had five hospitalizations in six months and now requires continuous BiPAP for respiratory support. He tells the nurse, “I’m so tired of all this – I just want to stay home and be comfortable.” His parents are still pursuing a lung transplant evaluation. Which action should the nurse take?

  • A) Encourage the parents to honor their son’s wishes for comfort care.
  • B) Arrange a goals-of-care conference including the adolescent and family.
  • C) Explain that transplant evaluation is still reasonable given his age.
  • D) Ask the social worker to begin the hospice referral process.

💡 Key Takeaway

Goals-of-care conferences align adolescent and family preferences when treatment goals diverge.

Show rationale

The adolescent’s statement reveals suffering and readiness to forgo aggressive treatment, yet his parents remain focused on transplant. A goals-of-care conference (B) includes the adolescent’s voice and allows the family to collaboratively explore the best path forward. Option A pressures parents without a structured conversation. Option C disregards the child’s experience and may promote false hope. Option D prematurely initiates hospice without a shared decision. The nurse’s action to arrange a conference aligns with pediatric advance care planning principles, which stress that mature minors should participate in decisions about their own end-of-life care when disagreements arise. This approach preserves trust and ensures that any treatment shift is ethically sound. By facilitating this communication, the nurse helps the family reconcile divergent goals and protect the adolescent’s comfort.

Question 3

37 of 150. A 4-year-old with cystic fibrosis presents with large, greasy, foul-smelling stools and poor weight gain over the past month. Which intervention should the nurse anticipate incorporating into the care plan?

  • A) Decrease the child's daily dietary fat intake immediately.
  • B) Increase the pancreatic enzyme dosage before each meal.
  • C) Switch the child to a low-protein, high-carbohydrate diet.
  • D) Administer a daily over-the-counter oral antidiarrheal medication.

💡 Key Takeaway

Signs of malabsorption in cystic fibrosis require an upward adjustment of pancreatic enzyme replacement therapy.

Show rationale

Greasy, foul-smelling stools and poor weight gain are classic signs of steatorrhea and malabsorption, indicating that the current enzyme dose is insufficient. The standard approach is to increase the enzyme dosage to match dietary intake. Option A is incorrect because children with cystic fibrosis require a high-fat diet to meet their elevated caloric needs; fat should not be restricted. Option C is incorrect because a high-protein diet is essential for growth and muscle maintenance in this population. Option D is incorrect because antidiarrheals do not address the underlying pancreatic insufficiency causing the symptoms.

Question 4

75 of 150. The mother of a 4-year-old healthy boy reports he recently resumed wetting the bed and demanding a pacifier since his older sister began cystic fibrosis treatments. What is the most accurate interpretation of this sibling's behavior?

  • A) It indicates a high likelihood of an underlying urinary tract infection.
  • B) It represents expected developmental regression due to altered family dynamics.
  • C) It suggests the child is mimicking the sister's chronic illness symptoms.
  • D) It demonstrates early signs of severe oppositional defiant disorder development.

💡 Key Takeaway

Behavioral regression is a typical stress response in preschool-aged siblings facing major family disruptions.

Show rationale

Behavioral regression, such as bedwetting or using a pacifier, is a typical stress response in preschool-aged siblings facing major family disruptions like a new chronic illness treatment regimen. It reflects a need for parental attention rather than pathology. While a urinary tract infection could cause enuresis, the simultaneous demand for a pacifier points clearly to regression. Mimicking symptoms would involve respiratory or digestive complaints similar to cystic fibrosis, not developmental regression. Oppositional defiant disorder involves a pattern of angry, vindictive behavior, not simple regression seeking comfort.

Question 5

114 of 150. A 14-year-old with cystic fibrosis and an active AND order is admitted for acute severe bone pain following a minor fall. The parents request immediate intervention for the pain.

  • A) Administer prescribed analgesics to manage the acute pain episode.
  • B) Withhold analgesics since the AND order precludes acute interventions.
  • C) Request a temporary revocation of the AND order for treatment.
  • D) Consult the ethics committee before providing any pain medications.

💡 Key Takeaway

An AND order applies to resuscitation and life-sustaining measures, not the treatment of reversible acute pain.

Show rationale

An AND or DNR order specifically dictates the withholding of cardiopulmonary resuscitation in the event of an arrest; it does not mean "do not treat." Providing comfort care and managing reversible acute conditions, such as pain from a fall, remains a primary clinical obligation. Option B is incorrect because withholding analgesics violates the core principles of palliative and standard medical care. Option C is incorrect because treating acute pain does not conflict with an AND order, so no revocation is necessary. Option D is incorrect because administering pain medication for an acute injury is a standard, expected nursing intervention that does not require an ethics consultation, even for a patient with an active AND order.

Question 6

119 of 150. A 6-year-old child is 8 hours post-tonsillectomy. The child is sleeping but exhibits frequent swallowing motions and a heart rate of 135 bpm.

  • A) Gently awaken the child to inspect the oropharynx using a penlight.
  • B) Administer the prescribed intravenous analgesic for throat discomfort.
  • C) Reposition the child to a prone position to facilitate oral drainage.
  • D) Document the findings as normal sleep patterns after anesthesia.

💡 Key Takeaway

Frequent swallowing in a sleeping post-tonsillectomy patient is a classic early sign of active bleeding.

Show rationale

Frequent swallowing and tachycardia in a sleeping child are classic early signs of postoperative hemorrhage. Blood trickling down the throat triggers the swallowing reflex. You must gently awaken the child to inspect the oropharynx using a penlight to confirm active bleeding. Administering analgesics ignores the potential emergency and masks symptoms. Repositioning to a prone position might help with airway clearance if vomiting occurs, but it delays the critical assessment of the surgical site. Documenting the findings as normal is incorrect because these are specific red flags for bleeding, not typical sleep behaviors. Early recognition of frequent swallowing prevents progression to hypovolemic shock.

Question 7

29 of 150. The nurse delegates the setup of a room for a 12-year-old adolescent admitted with new-onset unprovoked seizures. Which observation of the completed room setup indicates the nurse must correct the unlicensed assistive personnel?

  • A) The bed is locked and placed in the lowest position.
  • B) Commercial seizure pads are secured to the upper side rails.
  • C) An appropriately sized oxygen mask is connected to the flowmeter.
  • D) The rigid suction tip is stored inside the supply room.

💡 Key Takeaway

All components of the suction setup must be kept at the bedside for immediate emergency access.

Show rationale

When assessing delegated tasks, the nurse must ensure all safety standards are met. Option D requires correction because the rigid suction tip (Yankauer) must be at the bedside, connected to the tubing and canister, to allow for immediate airway clearance during a seizure. Options A, B, and C represent correct implementations of seizure precautions. Keeping the bed low and locked prevents fall injuries, securing commercial pads protects the patient from striking hard side rails, and having connected oxygen ensures rapid response to potential hypoxia during or after the seizure event.

Question 8

46 of 150. The nurse is evaluating the room of a 14-month-old toddler admitted for complex febrile seizures. When assessing the crib setup for safety, which finding requires an immediate intervention by the nurse?

  • A) The crib mattress is placed in the lowest possible position.
  • B) Thick blankets are tied securely around the crib side rails.
  • C) A working bag-valve-mask device is located on the bedside table.
  • D) The suction canister is attached to the wall vacuum source.

💡 Key Takeaway

Commercial crib bumpers or pads should be used instead of loose blankets to prevent suffocation.

Show rationale

While padding side rails is a standard component of seizure precautions, using thick blankets for a toddler introduces a significant suffocation risk and violates safe sleep guidelines. Option B requires immediate intervention because commercial, breathable seizure pads should be used instead. Option A is a correct safety measure that prevents falls if the child climbs or stands. Option C is appropriate, as emergency ventilation equipment must be readily accessible. Option D is also a correct finding, ensuring that airway clearance tools are assembled and ready for immediate use.

Question 9

57 of 150. A 14-year-old male with cystic fibrosis has a BMI of 16. He expresses frustration about being "treated like a kid" and his lack of physical growth compared to his peers. Which response is most appropriate?

  • A) Reassure him that physical growth will eventually catch up.
  • B) Assess his specific concerns regarding peer relationships and dating.
  • C) Refer him to an endocrinologist for growth hormone therapy.
  • D) Advise him to increase his daily caloric intake immediately.

💡 Key Takeaway

Delayed puberty in chronic illness significantly impacts a teenager's psychosocial identity and requires targeted relational assessment.

Show rationale

Teens with cystic fibrosis often experience delayed puberty and poor weight gain, which can severely impact their self-esteem and identity development. Option B is the best choice because it directly assesses how his lack of physical growth is affecting his psychosocial well-being and peer interactions. Adolescents measure their normalcy against their peers, and feeling physically behind can lead to isolation or depression. Option A is dismissive of his current emotional distress and offers false reassurance without exploring his feelings. Option C jumps to a medical intervention without first completing a comprehensive psychosocial and endocrine assessment. Option D focuses purely on the physical aspect of caloric intake, completely ignoring the identity and body image concerns he is expressing. Validating his feelings builds trust and guides appropriate psychosocial support.

Question 10

83 of 150. During interdisciplinary rounds, the nurse presents a 4-year-old with a recent traumatic brain injury who exhibits frequent coughing during meals and difficulty holding a spoon. Which recommendation should the nurse prioritize to ensure safe care coordination?

  • A) Advocate for an urgent speech-language pathology evaluation.
  • B) Advocate for an urgent occupational therapy evaluation.
  • C) Advocate for an urgent physical therapy evaluation.
  • D) Advocate for an urgent respiratory therapy evaluation.

💡 Key Takeaway

Speech-language pathology is the primary discipline for evaluating and managing dysphagia to prevent aspiration.

Show rationale

Frequent coughing during meals strongly suggests dysphagia and a high risk for aspiration, making a speech-language pathology consult the immediate priority for airway protection and safe feeding. While occupational therapy is certainly needed to address the fine motor deficit of holding a spoon, airway safety always takes clinical precedence over fine motor skill building. Physical therapy focuses on gross motor rehabilitation and mobility, which does not address the immediate feeding safety concern. Respiratory therapy manages airway clearance and ventilation but does not perform clinical swallow evaluations or prescribe modified diets. By prioritizing speech therapy, the nurse ensures the child receives a proper swallowing assessment before continuing oral intake.

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111 of 150. A 3-year-old child with chronic daily cough and nasal polyps has a sweat chloride level of 72 mmol…

A) Confirm the cystic fibrosis diagnosis an
B) Classify the result as indeterminate and
C) Reassure the family that this is a norma
D) Prescribe daily oral corticosteroids to
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