HESI RN
HESI Pediatrics Practice Exam
1. The healthcare provider is assessing an infant with pyloric stenosis. Which pathophysiological mechanism is the most likely consequence of this infant's clinical picture?
- A. Metabolic alkalosis.
- B. Respiratory acidosis.
- C. Metabolic acidosis.
- D. Respiratory alkalosis.
Correct answer: A
Rationale: Pyloric stenosis leads to obstruction at the outlet of the stomach, causing frequent vomiting and loss of stomach acids. This results in a loss of hydrochloric acid and hydrogen ions, leading to metabolic alkalosis due to an increase in serum bicarbonate levels. Therefore, the correct answer is metabolic alkalosis. Choice B, respiratory acidosis, is incorrect as it is not typically associated with pyloric stenosis. Choice C, metabolic acidosis, is incorrect because the loss of stomach acids in pyloric stenosis leads to metabolic alkalosis, not acidosis. Choice D, respiratory alkalosis, is also incorrect as it is not the usual consequence of pyloric stenosis.
2. The nurse is caring for a 3-year-old child who has been recently diagnosed with cystic fibrosis. Which discharge instruction by the nurse is most important to promote pulmonary function?
- A. Chest physiotherapy should be performed before meals and at bedtime
- B. Cough suppressants can be used up to four times a day for relief
- C. Oxygen should be given through a nasal cannula between 4-6 L/min
- D. Exercise is discouraged in order to preserve pulmonary vital capacity
Correct answer: B
Rationale: In cystic fibrosis, thick mucus obstructs the airways, making it difficult to clear from the lungs. Cough suppressants can help reduce the discomfort associated with persistent coughing, allowing the child to cough more effectively to clear the mucus, thus promoting pulmonary function. Chest physiotherapy, not exercise, helps mobilize the mucus. Oxygen therapy may be needed but is not the most important for promoting pulmonary function in this case.
3. When assessing a 10-year-old newly diagnosed with osteomyelitis, which information is most important for the nurse to obtain?
- A. Recent history of infection recurrences.
- B. Cultural heritage and beliefs.
- C. Family history of bone disorders.
- D. Increased fluid intake occurrences.
Correct answer: A
Rationale: In a 10-year-old with newly diagnosed osteomyelitis, the most important information for the nurse to obtain is the recent history of infection recurrences. This is crucial because osteomyelitis is an infection of the bone, and assessing for any recent recurrence of infections can help in determining the possible source of the osteomyelitis and guide the treatment plan accordingly. Choices B, C, and D are less relevant in the immediate assessment of a newly diagnosed case of osteomyelitis as they do not directly impact the current infection or treatment plan.
4. When a mother of a 3-year-old boy gives birth to a baby girl and the boy asks why his baby sister is breastfeeding from their mother, how should the nurse respond? Select the option that is not appropriate.
- A. Remind him that his mother breastfed him too
- B. Clarify that breastfeeding is the mother's choice
- C. Reassure the older brother that it does not hurt his mother
- D. Explain that newborns get milk from their mothers in this way
Correct answer: B
Rationale: Choice B is not the appropriate response in this scenario. The correct answer is choice A, which normalizes the situation for the child by reminding him that his mother breastfed him too. This response helps the older brother understand that breastfeeding is a natural and common practice for newborns, including his baby sister, just as it was for him when he was a baby. Choice B, while true, does not directly address the child's question and may not provide the same level of reassurance and normalization as choice A. Choices C and D also do not directly answer the child's question and do not provide the same level of connection and understanding as choice A.
5. After observing a mother giving her 11-month-old ferrous sulfate followed by two ounces of orange juice, what should the nurse do next?
- A. Suggest placing the iron drops in the orange juice and feed the infant.
- B. Tell the mother to follow the iron drops with formula instead of orange juice.
- C. Instruct the mother to feed the infant nothing in the next 30 minutes after the iron.
- D. Give positive feedback about the way she administered the sulfate.
Correct answer: D
Rationale: Providing positive feedback to the mother for correctly administering the iron supplements is essential as it reinforces proper medication administration practices. This encouragement can help build the mother's confidence and ensure that she continues to administer the supplements correctly in the future, promoting the infant's health and well-being. Choices A, B, and C are incorrect because there is no need to suggest altering the administration method, changing the liquid used, or restricting feeding immediately after administering the iron supplement. Giving positive feedback is the most appropriate action in this scenario to acknowledge the mother's correct administration technique.
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