HESI LPN
Pediatrics HESI 2023
1. What should the nurse recommend to reduce the risk of sudden infant death syndrome (SIDS) in a 6-month-old infant?
- A. Place the infant on their back to sleep
- B. Use a pacifier during sleep
- C. Have the infant sleep on their side
- D. Keep the infant's room cool
Correct answer: A
Rationale: Placing the infant on their back to sleep is the correct recommendation to reduce the risk of sudden infant death syndrome (SIDS). This sleep position has been shown to significantly decrease the incidence of SIDS. Using a pacifier during sleep (Choice B) can also help reduce the risk, but it is secondary to the back sleeping position. Having the infant sleep on their side (Choice C) is not recommended, as it increases the risk of SIDS. Keeping the infant's room cool (Choice D) may provide a comfortable sleeping environment but does not directly reduce the risk of SIDS.
2. The nurse is assessing a 3-year-old boy whose parents brought him to the clinic when they noticed that the right side of his abdomen was swollen. What finding would suggest this child has a neuroblastoma?
- A. The child has a maculopapular rash on his palms.
- B. The parents report that their son is vomiting and not eating well.
- C. The parents report that their son is irritable and not gaining weight.
- D. Auscultation reveals wheezing with diminished lung sounds.
Correct answer: B
Rationale: Vomiting and poor appetite can be symptoms of neuroblastoma, a malignancy that affects the adrenal glands and sympathetic nervous system. A maculopapular rash on the palms (Choice A) is not typically associated with neuroblastoma. Irritability and poor weight gain (Choice C) may be non-specific findings and do not specifically point towards neuroblastoma. Auscultation findings of wheezing with diminished lung sounds (Choice D) are more indicative of respiratory conditions rather than neuroblastoma.
3. 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.
4. A parent and 4-year-old child who recently emigrated from Colombia arrive at the pediatric clinic. The child has a temperature of 102°F, is irritable, and has a runny nose. Inspection reveals a rash and several small, red, irregularly shaped spots with blue-white centers in the mouth. What illness does the nurse suspect the child has?
- A. Measles
- B. Chickenpox
- C. Fifth disease
- D. Scarlet fever
Correct answer: A
Rationale: The nurse should suspect measles based on the symptoms described, including the presence of Koplik spots (small, red spots with blue-white centers in the mouth). Measles typically presents with fever, irritability, runny nose, and a rash that begins on the face and spreads downward. Chickenpox (choice B) presents with vesicular lesions in different stages of healing and usually starts on the trunk. Fifth disease (choice C) presents with a 'slapped cheek' rash on the face and can cause joint pain. Scarlet fever (choice D) is characterized by a sandpaper-like rash, fever, and strawberry tongue.
5. The instructor is educating a group of students about myelination in a child. Which statement by the students indicates that the teaching was successful?
- A. Myelination continues into adolescence.
- B. The process occurs in a head-to-toe fashion.
- C. Myelination speeds up nerve impulses.
- D. Myelination increases the specificity and efficiency of nerve impulses.
Correct answer: B
Rationale: The correct answer is B. Myelination occurs in a cephalocaudal (head-to-toe) pattern, improving nerve function progressively. Choice A is incorrect because myelination continues beyond 4 years of age and into adolescence. Choice C is incorrect as myelination speeds up nerve impulses rather than slowing them down. Choice D is incorrect because myelination increases the specificity and efficiency of nerve impulses, making them more focused and precise.
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