Nursing Elites

1. How is the diagnosis of Hirschsprung disease confirmed in a 1-month-old infant admitted to the pediatric unit?

• A. Colonoscopy
• B. Rectal biopsy
• C. Multiple saline enemas
• D. Fiberoptic nasoenteric tube

Correct answer: B

Rationale: Rectal biopsy is the definitive diagnostic procedure for Hirschsprung disease in infants. It confirms the absence of ganglion cells in the affected bowel segment, which is characteristic of Hirschsprung disease. Colonoscopy (Choice A) is not typically used for confirmation as it may not provide a definitive result. Multiple saline enemas (Choice C) are utilized in the treatment of meconium ileus, a complication of cystic fibrosis, and not in the diagnosis of Hirschsprung disease. Fiberoptic nasoenteric tube (Choice D) is not a diagnostic tool for Hirschsprung disease; it is commonly used for gastrointestinal decompression or feeding purposes but does not confirm the diagnosis.

2. The parents of a 6-week-old infant who was born without an immune system ask a nurse why their baby is still so healthy. How should the nurse reply?

• A. Exposure to pathogens during this time can be limited.
• B. Some antibodies are produced by the infant’s colonic bacteria.
• C. Antibodies are passively received from the mother through the placenta and breast milk.
• D. Fewer antibodies are produced by the fetal thymus during the eighth and ninth months of gestation.

Correct answer: C

Rationale: The correct answer is C. Infants receive passive immunity through antibodies from the mother during pregnancy and breastfeeding, which protect them initially. Choice A is incorrect because a 6-week-old infant born without an immune system would not be able to limit exposure to pathogens effectively. Choice B is incorrect as antibodies produced by colonic bacteria are not a significant source of immunity in infants. Choice D is incorrect as the fetal thymus primarily plays a role in T cell development rather than antibody production during gestation.

3. A nurse is evaluating a 3-year-old child’s developmental progress. The inability to perform which task indicates to the nurse that there is a developmental delay?

• A. Copying a square
• B. Hopping on one foot
• C. Catching a ball reliably
• D. Using a spoon effectively

Correct answer: A

Rationale: The correct answer is A: Copying a square. At 3 years old, children should be able to copy a square as part of their fine motor skill development. The inability to perform this task may indicate a developmental delay in fine motor skills. Choice B, hopping on one foot, typically develops around 4-5 years of age, so it is not a reliable indicator of a delay at 3. Choice C, catching a ball reliably, involves coordination skills that develop later in childhood, making it less relevant for a 3-year-old assessment. Choice D, using a spoon effectively, is more related to self-care and feeding skills rather than fine motor development, so it is not the best indicator of a developmental delay in this context.

4. When a family decides to withhold 'extraordinary care' for a newborn with severe abnormalities, what does this decision indicate?

• A. The newborn has no rights.
• B. It is the same as euthanasia.
• C. It is illegal professional practice.
• D. The newborn is being allowed to die.

Correct answer: D

Rationale: When a family decides to withhold 'extraordinary care' for a newborn with severe abnormalities, it means that aggressive interventions will not be pursued, allowing the newborn to die naturally. This decision is legal and ethical, respecting the principle of non-maleficence by avoiding unnecessary suffering. Choice A is incorrect because all individuals, including newborns, have rights, but the decision to withhold extraordinary care is based on ethical considerations. Choice B is incorrect as withholding care is not the same as euthanasia, which involves actively ending life. Choice C is incorrect as long as the decision is made within legal and ethical boundaries, it is not considered illegal professional practice.

5. An infant with hypertrophic pyloric stenosis (HPS) is admitted to the pediatric unit. What does the nurse expect when palpating the infant’s abdomen?

• A. A distended colon
• B. Marked tenderness around the umbilicus
• C. An olive-sized mass in the right upper quadrant
• D. Rhythmic peristaltic waves in the lower abdomen

Correct answer: C

Rationale: When palpating the abdomen of an infant with hypertrophic pyloric stenosis (HPS), the nurse would expect to feel an olive-sized mass in the right upper quadrant. This finding is characteristic of HPS due to the hypertrophied pylorus muscle. Choices A, B, and D are incorrect. A distended colon is not typically associated with HPS. Marked tenderness around the umbilicus is not a specific finding of HPS. Rhythmic peristaltic waves in the lower abdomen are not expected in HPS, as the condition primarily affects the pylorus region of the stomach.

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