HESI RN
HESI Pediatric Practice Exam
1. An infant with tetralogy of Fallot becomes acutely cyanotic and hyperpneic. Which action should the nurse implement first?
- A. Administer morphine sulfate.
- B. Start IV fluids.
- C. Place the infant in a knee-chest position.
- D. Provide 100% oxygen by face mask.
Correct answer: C
Rationale: In a situation where an infant with tetralogy of Fallot is acutely cyanotic and hyperpneic, the priority action should be to place the infant in a knee-chest position. This position helps increase systemic vascular resistance, improving pulmonary blood flow and subsequently ameliorating the cyanosis and hyperpnea. It is a non-invasive and effective intervention that can be promptly implemented by the nurse to address the immediate respiratory distress. Administering morphine sulfate (Choice A) is not the priority in this case as it may cause further respiratory depression. Starting IV fluids (Choice B) may not address the immediate cyanosis and hyperpnea. Providing 100% oxygen by face mask (Choice D) can help with oxygenation but may not be as effective as placing the infant in a knee-chest position to improve blood flow dynamics.
2. The practical nurse is reinforcing information about Lyme disease prevention with a client who is preparing for a camping trip with family. Which statement by the client informs the nurse that the client understands the instruction?
- A. I'll make sure my son wears dark clothing on his hike.
- B. I'll get a prescription for amoxicillin to take with us.
- C. We should all get the Lyme disease vaccine before our trip.
- D. We will wear long pants and long-sleeved shirts in the woods.
Correct answer: D
Rationale: The correct answer is D. Wearing long pants and long-sleeved shirts is an effective preventive measure against tick bites, which reduces the risk of contracting Lyme disease. This attire helps to minimize skin exposure to ticks, thereby decreasing the chances of a tick attaching and transmitting the disease-causing bacteria.
3. A child who weighs 25 kg is receiving IV ampicillin 300 mg/kg/24 hours in equally divided doses every 4 hours. How many milligrams should the nurse administer to the child for each dose?
- A. 1875 mg
- B. 625 mg
- C. 2000 mg
- D. 1500 mg
Correct answer: A
Rationale: To calculate the dose for each administration, multiply the child's weight (25 kg) by the dose (300 mg/kg/24 hours) and divide by the number of doses per day (6, as doses are every 4 hours). This gives us (25 kg * 300 mg/kg / 24 hours) / 6 doses = 1875 mg. Therefore, the nurse should administer 1875 mg for each dose. Choice B, 625 mg, is incorrect as it does not consider the correct calculation based on the weight and prescribed dose. Choice C, 2000 mg, is incorrect as it is not derived from the correct dosage calculation. Choice D, 1500 mg, is incorrect as it does not reflect the accurate dosage calculation based on the weight of the child and the prescribed dose.
4. What action should be taken by the healthcare provider for a child who has ingested a corrosive product?
- A. Induce vomiting using Ipecac to remove the corrosive agent.
- B. Administer vinegar or lemon juice to neutralize the caustic agent.
- C. Give activated charcoal to decontaminate the stomach.
- D. Telephone the poison control center and follow their advice.
Correct answer: D
Rationale: In cases of corrosive product ingestion, it is crucial to contact the poison control center for guidance. Inducing vomiting or attempting to neutralize the agent can lead to further harm. The poison control center professionals are trained to provide specific instructions tailored to the situation, ensuring the best possible outcome for the child. Therefore, the correct action is to call the poison control center for appropriate advice. Inducing vomiting can cause additional damage by re-exposing the esophagus and mouth to the corrosive substance. Administering vinegar or lemon juice is not recommended as it may worsen the situation by causing a chemical reaction. While activated charcoal can be useful in some cases of poisoning, it is not recommended for corrosive substances as it is ineffective in binding to them.
5. The healthcare provider is evaluating the effects of thyroid therapy used to treat a 5-month-old with hypothyroidism. Which behavior indicates that the treatment has been effective?
- A. Laughs readily, turns from back to side.
- B. Has strong Moro and tonic neck reflexes.
- C. Keeps fists clenched, opens hands when grasping an object.
- D. Can lift head but not chest when lying on abdomen.
Correct answer: A
Rationale: In infants, laughing readily and turning from back to side are developmental milestones that indicate effective thyroid therapy and normal development. These actions demonstrate improved muscle tone, coordination, and overall growth, which are key indicators of successful treatment for hypothyroidism in infants. Choices B, C, and D describe behaviors that are not specific indicators of thyroid therapy effectiveness in treating hypothyroidism in infants.
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