The nurse is caring for a child who has been admitted with a possible diagnosis of cystic fibrosis. Which is the laboratory/diagnostic tool that would likely be used to help determine the diagnosis of this child?

Questions 56

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PN Pediatric Nursing 2023 Proctored Exam Questions

Question 1 of 9

The nurse is caring for a child who has been admitted with a possible diagnosis of cystic fibrosis. Which is the laboratory/diagnostic tool that would likely be used to help determine the diagnosis of this child?

Correct Answer: B

Rationale: The sweat chloride test (B) diagnoses cystic fibrosis by detecting high sodium/chloride levels. Blood culture (A), EEG (C), and ECG (D) are unrelated. Document: 'The analysis of sweat is a major aid in diagnosis.'

Question 2 of 9

The side effects of oral iron therapy include select all that apply

Correct Answer: B

Rationale: Blackened stools A, darkened teeth B, and gastric irritation D are side effects I, II, IV, per document p5, 3.

Question 3 of 9

A 2-month-old infant presents with projectile vomiting. Exam shows an olive-shaped mass. Most likely diagnosis is:

Correct Answer: B

Rationale: Pyloric stenosis causes vomiting and a palpable mass, per AAP. A, C-E differ.

Question 4 of 9

Best single drug of choice for an uncomplicated listeria infection is:

Correct Answer: A

Rationale: Ampicillin is the preferred single agent for uncomplicated Listeria infections (IDSA). B-E are less optimal alone.

Question 5 of 9

A child with a history of cystic fibrosis appears with abdominal pain and constipation. Abdominal x-ray reveals fecal impaction in the rectosigmoid colon. Most likely diagnosis is:

Correct Answer: C

Rationale: Distal intestinal obstruction syndrome fits pain, constipation, and impaction in cystic fibrosis, per CFF. A, B, D, E differ.

Question 6 of 9

A nurse is making pediatric bed assignments. What should the nurse take into consideration when making bed assignments? Select one that does not apply.

Correct Answer: C

Rationale: Similar ages and diagnoses aid compatibility, and cribs are safe for older infants. Adults with children and full beds for toddlers pose safety risks.

Question 7 of 9

A 3-month-old infant presents with cyanosis and poor feeding. Chest x-ray shows a narrow mediastinum. Most likely diagnosis is:

Correct Answer: B

Rationale: Transposition shows a narrow mediastinum and cyanosis, per AAP. A, C-E differ.

Question 8 of 9

A 3-month-old infant presents with inconsolable crying and flexed legs. X-ray shows a spiral femur fracture. Most likely diagnosis is:

Correct Answer: C

Rationale: Child abuse is suspected with a spiral fracture in a non-ambulatory infant, per AAP. A, B, D, E are less likely.

Question 9 of 9

A newborn appears with ambiguous genitalia and a 46,XX karyotype. Maternal history reveals virilization during pregnancy. Most likely diagnosis is:

Correct Answer: A

Rationale: CAH fits XX karyotype and maternal virilization, per AAP (doc p148, Q561).

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