HESI LPN
Pediatrics HESI 2023
1. A child with a diagnosis of bronchiolitis is admitted to the hospital. What is the most important nursing intervention?
- A. Administering bronchodilators
- B. Providing respiratory therapy
- C. Monitoring oxygen saturation
- D. Encouraging fluid intake
Correct answer: B
Rationale: The most important nursing intervention for a child with bronchiolitis is providing respiratory therapy. This intervention helps to maintain airway patency and improve breathing, which are crucial in managing bronchiolitis. Administering bronchodilators (Choice A) may be a part of the treatment plan but is not the most important intervention. Monitoring oxygen saturation (Choice C) is important but falls secondary to providing direct respiratory support. Encouraging fluid intake (Choice D) is also essential but does not address the immediate respiratory needs of the child with bronchiolitis.
2. The nurse is assessing an infant and notes that the infant's urine has a mousy or musty odor. What would the nurse suspect?
- A. Maple syrup urine disease
- B. Tyrosinemia
- C. Phenylketonuria
- D. Trimethylaminuria
Correct answer: C
Rationale: The correct answer is C: Phenylketonuria (PKU). PKU is suggested by a mousy or musty odor of the urine, which is caused by the inability to metabolize phenylalanine. Choice A, Maple syrup urine disease, is characterized by a sweet-smelling urine. Choice B, Tyrosinemia, typically presents with cabbage-like odor in the urine. Choice D, Trimethylaminuria, is associated with a fishy odor in the urine, breath, and sweat.
3. 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.
4. A 3-year-old child with a history of frequent respiratory infections is being evaluated for cystic fibrosis. What diagnostic test should the nurse anticipate will be ordered?
- A. Chest X-ray
- B. Sweat chloride test
- C. Pulmonary function test
- D. Sputum culture
Correct answer: B
Rationale: The correct answer is the sweat chloride test. This test is crucial in diagnosing cystic fibrosis as it measures the amount of chloride in sweat, which is typically elevated in individuals with cystic fibrosis. A chest X-ray (Choice A) may show characteristic findings like hyperinflation or bronchiectasis, but it is not a definitive diagnostic test for cystic fibrosis. Pulmonary function tests (Choice C) may help assess lung function but are not specific for cystic fibrosis. Sputum culture (Choice D) may be used to identify specific pathogens causing respiratory infections but is not a primary diagnostic test for cystic fibrosis.
5. 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.
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