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 nurse finds a 6-month-old infant unresponsive and calls for help. After opening the airway and finding the XXXX, the infant is still not breathing. What action should the nurse take next?
- A. Palpate the femoral pulse and check for regularity.
- B. Deliver cycles of 30 chest compressions and 2 breaths.
- C. Give two breaths that make the chest rise.
- D. Feel the carotid pulse and check for adequate breathing.
Correct answer: C
Rationale: In a scenario where a 6-month-old infant is unresponsive and not breathing after the airway is open, giving two breaths that make the chest rise is the appropriate action. This helps deliver oxygen to the infant's lungs and can help initiate breathing. Chest compressions are not recommended for infants as the first step in resuscitation. Checking pulses like the femoral or carotid pulse is not the priority when an infant is not breathing, as providing oxygen through breaths is essential.
3. 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.
4. A child with a fever of 39°C (102.2°F) and a sore throat is brought to the clinic. The practical nurse suspects the child has streptococcal pharyngitis. Which diagnostic test should the practical nurse prepare the child for?
- A. Rapid antigen detection test.
- B. Throat culture.
- C. Complete blood count (CBC).
- D. Chest X-ray.
Correct answer: A
Rationale: A rapid antigen detection test is the appropriate diagnostic test for suspected streptococcal pharyngitis. This test is commonly used due to its quick results, helping in the prompt diagnosis and appropriate treatment of the condition. It specifically detects the presence of streptococcal antigens in the throat, aiding in confirming the diagnosis and guiding the healthcare provider in determining the most suitable treatment plan. Throat culture (Choice B) is a confirmatory test but is not as rapid as the rapid antigen detection test. Complete blood count (Choice C) and Chest X-ray (Choice D) are not specific tests for streptococcal pharyngitis and would not aid in confirming the diagnosis.
5. A male infant with bronchiolitis is brought to the clinic by his mother. The infant is congested and febrile with a capillary refill of 2 seconds. Which information should the nurse discuss with the mother?
- A. Encourage the infant to play
- B. Limit the amount of oral intake
- C. Keep the infant isolated from others
- D. Place the infant on their back for naps
Correct answer: C
Rationale: Bronchiolitis is a highly contagious respiratory infection commonly caused by viruses. Isolating the infant from others is crucial to prevent the spread of the infection to other vulnerable individuals, especially those with weakened immune systems. Encouraging play may not be appropriate as the infant is sick and needs rest. Limiting oral intake might be necessary if the infant is having difficulty swallowing due to respiratory distress. Placing the infant on their back for naps is a safe sleep practice but not the priority in this situation where preventing transmission of the infection is crucial.
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