HESI LPN
Pediatric HESI Test Bank
1. An infant who has had diarrhea for 3 days is admitted in a lethargic state and is breathing rapidly. The parent states that the baby has been ingesting formula, although not as much as usual, and cannot understand the sudden change. What explanation should the nurse give the parent?
- A. Cellular metabolism is unstable in young children.
- B. The proportion of water in the body is less than in adults.
- C. Renal function is immature in children until they reach school age.
- D. The extracellular fluid requirement per unit of body weight is greater than in adults.
Correct answer: D
Rationale: The correct answer is D. Infants have a higher extracellular fluid requirement per unit of body weight, making them more susceptible to dehydration and electrolyte imbalances during illnesses such as diarrhea. Choice A is incorrect because cellular metabolism being unstable is not the primary explanation for the symptoms described. Choice B is incorrect as the proportion of water in the body alone does not fully explain the increased risk of dehydration in infants. Choice C is incorrect because while renal function is immature in children, it is not the most relevant factor in this scenario compared to the increased fluid requirements.
2. A group of students is reviewing information about the endocrine system in infants and children. The students demonstrate understanding of the information when they state:
- A. Endocrine glands begin developing in the first trimester of gestation.
- B. At birth, the endocrine glands are not fully functional.
- C. Infants may have difficulty balancing glucose and electrolytes.
- D. A child’s endocrine system plays a vital role in growth and development.
Correct answer: C
Rationale: The correct statement is that infants may have difficulty balancing glucose and electrolytes because their endocrine systems are immature. Newborns have developing endocrine glands that are not yet fully functional, leading to challenges in maintaining glucose and electrolyte balance. Choice A is incorrect as endocrine glands start developing in the first trimester, not the third trimester. Choice B is incorrect as endocrine glands are not fully functional at birth. Choice D is incorrect because while a child’s endocrine system indeed plays a vital role in growth and development, the specific focus of the question is on the challenges infants face due to immature endocrine glands.
3. During postoperative care for a child who has had a tonsillectomy, what is an important nursing intervention?
- A. Encouraging deep breathing exercises
- B. Encouraging the child to eat
- C. Administering antibiotics
- D. Applying ice to the throat
Correct answer: C
Rationale: Administering antibiotics is crucial post-tonsillectomy to prevent infection, as the surgical site is susceptible to bacterial growth. Encouraging deep breathing exercises can also be beneficial for lung expansion and preventing respiratory complications. However, administering antibiotics takes precedence as it directly addresses the risk of infection. Encouraging the child to eat may not be appropriate immediately post-tonsillectomy due to the risk of throat irritation and potential discomfort. Applying ice to the throat is typically not recommended after a tonsillectomy, as it may constrict blood vessels and hinder the healing process.
4. A 4-year-old child is admitted to the hospital with a diagnosis of epiglottitis. What is the priority nursing intervention?
- A. Administer antibiotics
- B. Provide humidified oxygen
- C. Keep the child NPO
- D. Position the child upright
Correct answer: C
Rationale: The priority nursing intervention for a 4-year-old child admitted with epiglottitis is to keep the child NPO (nothing by mouth). This is crucial to prevent further airway compromise due to the inflamed epiglottis. Administering antibiotics may be necessary but is not the priority at this moment. Providing humidified oxygen can support oxygenation but does not address the immediate risk of airway obstruction. Positioning the child upright may help with breathing but does not address the risk of aspiration. Keeping the child NPO is essential to maintain a patent airway and prevent complications associated with epiglottitis.
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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