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. Before administering a tube feeding to a child, what should the practical nurse (PN) assess?
- A. Tube placement.
- B. Bowel sounds.
- C. Abdominal circumference.
- D. Tube patency.
Correct answer: A
Rationale: Assessing tube placement is critical before initiating a tube feeding to verify its correct positioning in the stomach. This assessment helps prevent potential complications such as aspiration if the tube is incorrectly placed in the respiratory tract. Checking bowel sounds, abdominal circumference, and tube patency are important assessments in the care of a child receiving tube feedings, but ensuring proper tube placement takes precedence to ensure safe and effective delivery of nutrition.
3. The practical nurse is caring for a child with suspected appendicitis. Which assessment finding should be reported to the healthcare provider immediately?
- A. Nausea and vomiting.
- B. Sudden relief of pain.
- C. Low-grade fever.
- D. Rebound tenderness.
Correct answer: B
Rationale: Sudden relief of pain in a child with suspected appendicitis should be reported immediately as it may indicate a rupture of the appendix, which is a medical emergency. Sudden relief of pain is concerning because it can be a sign of a perforated appendix, leading to peritonitis and sepsis.
4. The healthcare provider is preparing a teaching plan for the parents of a 6-month-old infant with GERD. What instruction should the healthcare provider include when teaching the parents measures to promote adequate nutrition?
- A. Alternate glucose water with formula
- B. Mix the formula with rice cereal
- C. Add multivitamins with iron to the formula
- D. Use water to dilute the formula
Correct answer: B
Rationale: The correct instruction for promoting adequate nutrition in a 6-month-old infant with GERD is to mix the formula with rice cereal. This thickens the feed, reducing the risk of reflux, aiding in proper nutrition, and minimizing GERD symptoms. Choices A, C, and D are incorrect. Alternating glucose water with formula, adding multivitamins with iron to the formula, or diluting the formula with water are not recommended measures for promoting adequate nutrition in infants with GERD.
5. The nurse is assessing a 4-month-old infant who has just received routine immunizations. The mother reports that the baby has been fussy and has a low-grade fever since the immunizations. What is the best response by the nurse?
- A. These are common side effects and should resolve within a few days
- B. Your baby may be having an allergic reaction to the immunizations
- C. You should bring your baby to the clinic immediately for evaluation
- D. You should give your baby aspirin to help with the fever
Correct answer: A
Rationale: The correct response by the nurse is to reassure the mother that fussiness and low-grade fever are common side effects of immunizations in infants and should resolve within a few days. It is essential to educate the mother about these expected reactions to alleviate her concerns. Choice B is incorrect because allergic reactions to immunizations usually present with more severe symptoms such as difficulty breathing or swelling. Choice C is not warranted unless there are concerning symptoms present. Choice D is inappropriate as aspirin is contraindicated in infants due to the risk of Reye's syndrome.
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