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Which condition is often associated with a "ground-glass" appearance on a chest x-ray in neonates?
- A. Pneumonia
- B. Respiratory distress syndrome
- C. Bronchopulmonary dysplasia
- D. Congenital diaphragmatic hernia
Correct Answer: B
Rationale: The correct answer is B, Respiratory distress syndrome. Respiratory distress syndrome often presents with a "ground-glass" appearance on a chest x-ray in neonates due to surfactant deficiency. Choice A, Pneumonia, typically appears as patchy infiltrates on chest x-ray. Choice C, Bronchopulmonary dysplasia, is characterized by hyperinflation and fibrosis, not a ground-glass appearance. Choice D, Congenital diaphragmatic hernia, usually shows mediastinal shift and bowel loops in the chest cavity on x-ray, not a ground-glass appearance.
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What is the best indicator of fluid balance in a pediatric patient?
- A. Blood pressure
- B. Heart rate
- C. Weight
- D. Urine output
Correct Answer: C
Rationale: Weight is the most accurate indicator of fluid balance in pediatric patients. Changes in weight reflect shifts in body fluid levels more directly compared to other parameters. Blood pressure and heart rate may be affected by various factors other than fluid balance. While urine output is important in assessing renal function, it may not provide a comprehensive picture of overall fluid balance in pediatric patients.
What is the most common cause of acute kidney injury in children?
- A. Dehydration
- B. Glomerulonephritis
- C. Hemolytic uremic syndrome
- D. Sepsis
Correct Answer: C
Rationale: Hemolytic uremic syndrome is the most common cause of acute kidney injury in children. While dehydration can lead to prerenal acute kidney injury, it is not the most common cause in children. Glomerulonephritis is a common cause of chronic kidney disease but not typically the most common cause of acute kidney injury in children. Sepsis can lead to acute kidney injury, but in children, hemolytic uremic syndrome is more prevalent.
The nurse is teaching a parent of a 6-month-old infant with gastroesophageal reflux (GER) before discharge. What instructions should the nurse include?
- A. Elevate the head of the bed in the crib to a 90-degree angle while the infant is sleeping.
- B. Hold the infant in the prone position after a feeding.
- C. Discontinue breastfeeding so that a formula and rice cereal mixture can be used.
- D. Prescribed cimetidine (Tagamet) should be given 30 minutes before feedings.
Correct Answer: D
Rationale: Cimetidine is an H2 blocker that reduces stomach acid, helping manage GER. Holding the infant in the prone position is not recommended due to the risk of SIDS. Breastfeeding should not be discontinued unless advised by a physician. Elevating the head to 90 degrees is excessive.
What is the primary goal in the treatment of a child with nephrotic syndrome?
- A. Decrease urine output
- B. Increase serum albumin
- C. Reduce proteinuria
- D. Increase blood pressure
Correct Answer: C
Rationale: The primary goal in treating nephrotic syndrome in children is to reduce proteinuria. Nephrotic syndrome is characterized by proteinuria, leading to hypoalbuminemia and edema. By reducing proteinuria, kidney damage can be minimized, and symptoms can be managed effectively. Decreasing urine output (Choice A) is not the primary goal, as it does not address the underlying issue of protein loss. Increasing serum albumin (Choice B) is a consequence of reducing proteinuria rather than the primary goal. Increasing blood pressure (Choice D) is not a goal in treating nephrotic syndrome and may even be contraindicated to prevent further kidney damage.
Which of the following is a hallmark sign of intussusception in children?
- A. Bilious vomiting
- B. "Currant jelly" stools
- C. Abdominal distention
- D. Constipation
Correct Answer: B
Rationale: "Currant jelly" stools, consisting of mucus and blood, are characteristic of intussusception in children. It occurs due to the telescoping of a segment of the intestine into an adjacent segment, leading to obstruction and subsequent mucosal ischemia, causing the passage of bloody mucus in the stool. Bilious vomiting can be seen in other conditions like bowel obstruction, abdominal distention can be present but is not as specific, and constipation is less likely in the presentation of intussusception.