HESI RN
HESI Practice Test Pediatrics
1. A 10-year-old child is being discharged after being admitted for status asthmaticus. Which instruction is most important for the nurse to include in the discharge teaching?
- A. Use a peak flow meter daily to monitor asthma control
- B. Avoid exposure to known allergens
- C. Continue taking asthma medications as prescribed
- D. Seek emergency care if symptoms worsen
Correct answer: A
Rationale: Using a peak flow meter daily is crucial as it helps monitor asthma control by measuring how well the child's lungs are functioning. This monitoring can indicate when intervention is needed before symptoms worsen or become severe, allowing for timely management of asthma exacerbations.
2. A 7-year-old child with cystic fibrosis is admitted to the hospital with a respiratory infection. The nurse is teaching the child’s parents about the importance of chest physiotherapy (CPT). Which statement by the parents indicates they need further teaching?
- A. We should perform CPT before meals.
- B. CPT will help loosen mucus in the lungs.
- C. We should perform CPT right after the child eats.
- D. CPT is an important part of our child’s treatment.
Correct answer: C
Rationale: The correct answer is C. Chest physiotherapy should not be performed right after meals to avoid inducing vomiting. It should be done before meals or at least 1 hour after for effective mucus clearance and to prevent any potential complications like vomiting. Choice A is correct as performing CPT before meals helps in loosening mucus. Choice B is also correct as CPT is indeed helpful in loosening mucus in the lungs. Choice D is correct as CPT plays a crucial role in the treatment of cystic fibrosis.
3. 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.
4. The nurse is conducting an admission assessment of an 11-month-old infant with CHF who is scheduled for repair of restenosis of coarction of the aorta that was repaired 4 days after birth. Findings include blood pressure higher in the arms than the lower extremities, pounding brachial pulses, and slightly palpable femoral pulses. What pathophysiologic mechanisms support these findings?
- A. The aortic semilunar valve obstructs blood flow into the systemic circulation
- B. The lumen of the aorta reduces the volume of the blood flow to the lower extremities
- C. The pulmonic valve prevents adequate blood volume into the pulmonary circulation
- D. An opening in the atrial septum causes a murmur due to a turbulent left-to-right shunt
Correct answer: B
Rationale: The correct answer is B. Coarctation of the aorta causes narrowing of the aorta, reducing blood flow to the lower extremities. This narrowing results in higher blood pressure in the arms compared to the lower extremities, along with stronger brachial pulses and slightly palpable femoral pulses. Choices A, C, and D are incorrect because they do not align with the pathophysiological mechanism of coarctation of the aorta, which specifically leads to reduced blood flow to the lower extremities.
5. A 3-year-old child is admitted to the hospital with severe dehydration. The healthcare provider prescribes an IV infusion of 0.9% normal saline. The nurse notes that the child’s heart rate is 150 beats per minute, and the blood pressure is 90/50 mm Hg. What should the nurse do first?
- A. Administer the IV fluids as prescribed
- B. Notify the healthcare provider
- C. Check the child’s urine output
- D. Reassess the child’s vital signs in 30 minutes
Correct answer: A
Rationale: In a pediatric patient with severe dehydration and signs of compromised hemodynamics such as tachycardia (heart rate of 150 bpm) and hypotension (blood pressure of 90/50 mm Hg), the priority intervention is to administer IV fluids as prescribed. Immediate fluid resuscitation is essential to restore hydration, improve perfusion, and stabilize the child's vital signs. While it's important to monitor urine output, initiating fluid resuscitation takes precedence in this situation. Notifying the healthcare provider can cause a delay in critical intervention, and waiting to reassess vital signs in 30 minutes can be detrimental in a child with severe dehydration and compromised hemodynamics.
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