HESI LPN
Pediatrics HESI 2023
1. A nurse is caring for an infant with intractable vomiting. For what complication is it most important for the nurse to assess?
- A. Acidosis
- B. Alkalosis
- C. Hyperkalemia
- D. Hypernatremia
Correct answer: B
Rationale: When an infant experiences intractable vomiting, it can lead to the loss of stomach acids, resulting in metabolic alkalosis. Alkalosis is characterized by elevated blood pH and can lead to serious complications. Assessing for alkalosis is essential in this scenario to monitor and manage the infant's condition. Choices A, C, and D are incorrect because in this context, the primary concern is the metabolic imbalance caused by excessive vomiting, leading to alkalosis rather than acidosis, hyperkalemia, or hypernatremia.
2. What finding would lead the nurse to suspect that a child has Turner syndrome?
- A. Webbed neck
- B. Microcephaly
- C. Gynecomastia
- D. Cognitive delay
Correct answer: A
Rationale: A webbed neck is a key feature seen in Turner syndrome, a genetic condition that occurs in females due to a complete or partial absence of one of the X chromosomes. This physical trait is caused by excess skin on the neck, giving it a webbed appearance. Microcephaly (Choice B) is a condition characterized by a smaller than average head size and is not typically associated with Turner syndrome. Gynecomastia (Choice C) refers to breast enlargement in males and is not a common finding in Turner syndrome, which affects females. Cognitive delay (Choice D) is not a specific characteristic of Turner syndrome, as the syndrome primarily affects physical development and may not necessarily impact cognitive abilities.
3. A parent brings an 18-month-old toddler to the clinic. The parent states, 'My child is so difficult to please, has temper tantrums, and annoys me by throwing food from the table.' What is the nurse’s best response?
- A. “Toddlers need discipline to prevent the development of antisocial behaviors.”
- B. “Toddlers are learning to assert independence, and this behavior is expected at this age.”
- C. “It is best to leave the toddler alone in the crib after calmly explaining why the behavior is unacceptable.”
- D. “This is the way a toddler expresses needs, and this behavior is acceptable during the initiative stage of development.”
Correct answer: B
Rationale: The correct answer is B: “Toddlers are learning to assert independence, and this behavior is expected at this age.” At 18 months, toddlers are in the stage of developing autonomy and independence. They may exhibit behaviors like temper tantrums and defiance as they assert their independence and test limits. It is crucial for parents and caregivers to understand that these behaviors are typical for toddlers at this age. Choice A is incorrect because discipline should be age-appropriate and focus on positive reinforcement rather than preventing antisocial behaviors. Choice C is inappropriate as leaving a toddler alone in a crib after explaining unacceptable behavior is not a recommended approach and can lead to feelings of abandonment. Choice D is inaccurate as the described behavior is more related to asserting independence rather than the initiative stage of development.
4. A child has been admitted to the pediatric unit with a severe asthma attack. What type of acid-base imbalance should the nurse expect the child to develop?
- A. metabolic alkalosis caused by decreased acid metabolites production
- B. respiratory alkalosis caused by decreased respiratory rate and carbon dioxide retention
- C. respiratory acidosis caused by impaired respirations and increased carbonic acid formation
- D. metabolic acidosis caused by the kidneys' inability to compensate for increased carbonic acid production
Correct answer: C
Rationale: In a severe asthma attack, the child is likely to develop respiratory acidosis due to impaired respirations leading to the retention of carbon dioxide, which combines with water to form carbonic acid. This results in the pH imbalance characterized by an excess of carbonic acid. Choices A, B, and D are incorrect. Metabolic alkalosis (Choice A) is not typically associated with severe asthma attacks; respiratory alkalosis (Choice B) would involve a decrease, not an increase, in carbon dioxide levels; and metabolic acidosis (Choice D) is not the primary acid-base imbalance seen in severe asthma attacks.
5. .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: Infants receive passive immunity through antibodies from the mother during pregnancy and breastfeeding, which protect them initially.
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