HESI LPN
Pediatrics HESI 2023
1. A healthcare provider is assessing a 2-year-old child with suspected Down syndrome. What characteristic physical feature is the healthcare provider likely to observe?
- A. Epicanthal folds
- B. Webbed neck
- C. Enlarged head
- D. Polydactyly
Correct answer: A
Rationale: Epicanthal folds are a common physical feature seen in individuals with Down syndrome. These are folds of skin that cover the inner corners of the eyes. Webbed neck (Choice B) is associated with Turner syndrome, not Down syndrome. Enlarged head (Choice C) is not a typical physical characteristic of Down syndrome. Polydactyly (Choice D) is the presence of extra fingers or toes, which is not specifically related to Down syndrome.
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. At 0345, you receive a call for a woman in labor. Upon arriving at the scene, you are greeted by a very anxious man who tells you that his wife is having her baby 'now.' This man escorts you into the living room where a 25-year-old woman is lying on the couch in obvious pain. Which of the following statements regarding crowning is true?
- A. Crowning represents the end of the second stage of labor.
- B. Crowning always occurs immediately after the amniotic sac has ruptured.
- C. It is safe to transport the patient during crowning if the hospital is close.
- D. Gentle pressure should be applied to the baby's head during crowning.
Correct answer: D
Rationale: During crowning, it is important to apply gentle pressure to the baby's head. This helps to prevent rapid delivery, which can lead to tearing and other complications for both the mother and the baby. Applying pressure also helps to control the delivery process, ensuring a safer and more controlled birth. Choices A, B, and C are incorrect because crowning does not signify the end of the second stage of labor, does not always occur immediately after the amniotic sac ruptures, and it is not safe to transport the patient during crowning, especially if the hospital is nearby, as rapid delivery can occur.
4. After surgery to correct hypertrophic pyloric stenosis (HPS) in a 3-week-old infant who had been formula-fed, which postoperative feeding order is appropriate?
- A. Thickened formula 24 hours after surgery
- B. Withholding feedings for the first 24 hours
- C. Regular formula feeding within 24 hours after surgery
- D. Additional glucose feedings as desired after the first 24 hours
Correct answer: C
Rationale: Following surgery for hypertrophic pyloric stenosis (HPS) in infants, it is appropriate to resume regular formula feeding within 24 hours postoperatively to support recovery. This helps maintain adequate nutrition and hydration for the infant. Choice A is incorrect because thickened formula may not be necessary and could potentially cause issues postoperatively. Choice B is incorrect as withholding feedings for the first 24 hours can lead to nutritional deficiencies and delay recovery. Choice D is inappropriate as additional glucose feedings are not typically indicated postoperatively for infants with HPS and may not provide the necessary nutrition needed for recovery.
5. When teaching a class of new parents about positioning their infants during the first few weeks of life, which position is safest?
- A. On the back, lying flat
- B. On either side, lying flat
- C. Head slightly elevated on the left side
- D. Head slightly elevated on the right side
Correct answer: A
Rationale: The correct answer is A: 'On the back, lying flat'. Placing infants on their back to sleep is recommended to reduce the risk of sudden infant death syndrome (SIDS). This position helps ensure the baby's airway remains clear and reduces the likelihood of suffocation. Choices B, C, and D are not as safe as placing the infant on their back, as they may increase the risk of accidental suffocation or SIDS.
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