HESI RN
HESI Practice Test Pediatrics
1. A child receives a prescription for amantadine 42 mg PO BID. Amantadine is available as a 50 mg/5 mL syrup. Using a supplied calibrated measuring device, how many mL should be administered per dose? (Round to the nearest tenth.)
- A. 4.2 mL
- B. 5 mL
- C. 3.6 mL
- D. 4 mL
Correct answer: A
Rationale: To calculate the mL per dose, divide the prescribed dose (42 mg) by the concentration of the syrup (50 mg/5 mL) and then convert the result to mL. 42 mg / 50 mg = 0.84. To find the amount in mL, multiply 0.84 by 5 mL, which equals 4.2 mL. Therefore, 4.2 mL should be administered per dose.
2. 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.
3. What action should the nurse take when a child presents with fever, sore throat, swollen red spots, and fluid-filled blisters?
- A. Obtain a fluid culture from the blisters
- B. Administer a fever-reducing medication
- C. Cover the drainage vesicles with a dressing
- D. Implement transmission precautions
Correct answer: D
Rationale: When a child presents with fever, sore throat, swollen red spots, and fluid-filled blisters, it may indicate a contagious viral infection. In such cases, implementing transmission precautions is crucial to prevent the spread of the infection to others in the pediatric clinic or community. Obtaining a fluid culture from the blisters (Choice A) may not be necessary at the initial stage without knowing the cause of the infection. Administering a fever-reducing medication (Choice B) may help manage symptoms but doesn't address the need for preventing transmission. Covering the drainage vesicles with a dressing (Choice C) may provide comfort to the child but does not directly address the risk of transmission to others.
4. What information should a nurse discuss with the mother of a 2-year-old girl who is drinking sweetened soda from her bottle?
- A. Encouraging 2-word phrases in speech development for a 2-year-old
- B. Explaining the association between drinking soda and dental caries
- C. Discussing the link between drinking soda and childhood obesity
- D. Emphasizing the importance of toddlers sleeping 10 hours a night
Correct answer: B
Rationale: The correct answer is explaining the association between drinking soda and dental caries. Soda consumption can lead to tooth decay and cavities, so it is crucial to educate the mother about this to prevent dental issues in the child.
5. A 7-year-old child with sickle cell anemia presents to the emergency department with severe pain in the arms and legs. What is the nurse’s priority action?
- A. Administer prescribed pain medication
- B. Apply warm compresses to the affected areas
- C. Encourage the child to drink fluids
- D. Monitor the child’s oxygen saturation
Correct answer: A
Rationale: In a sickle cell crisis, pain management is a priority due to the severe pain experienced by the child. Administering prescribed pain medication is crucial to alleviate the pain and provide comfort to the child. Once pain is controlled, other comfort measures like applying warm compresses and encouraging fluid intake can be implemented. Monitoring oxygen saturation is important but not the priority action when dealing with severe pain in a sickle cell crisis.
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