HESI RN
HESI Pediatric Practice Exam
1. A child who is admitted to the hospital with anemia is anxious, fearful, and hyperventilating. The nurse anticipates the child developing which acid-base imbalance?
- A. Metabolic acidosis
- B. Respiratory acidosis
- C. Respiratory alkalosis
- D. Metabolic alkalosis
Correct answer: C
Rationale: In this scenario, the child is hyperventilating, which leads to excessive loss of carbon dioxide. This loss of carbon dioxide causes respiratory alkalosis due to a decrease in the partial pressure of carbon dioxide in the blood. Therefore, the correct answer is respiratory alkalosis. Choices A, B, and D are incorrect. Metabolic acidosis is characterized by a decrease in pH and bicarbonate levels due to conditions like kidney disease. Respiratory acidosis is caused by retention of carbon dioxide, leading to an increase in the partial pressure of carbon dioxide. Metabolic alkalosis results from a loss of acid or an increase in bicarbonate levels.
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. Following a motor vehicle collision, a 3-year-old girl has a spica cast applied. Which toy is best for the nurse to offer this child?
- A. Duck that squeaks.
- B. Fashion doll and clothes.
- C. Set of cloth and hand puppets.
- D. Handheld video game.
Correct answer: C
Rationale: In this scenario, a set of cloth and hand puppets is the best choice for a 3-year-old with a spica cast. Hand puppets encourage imaginative play, creativity, and interaction, which are developmentally appropriate for a child of this age. The soft materials are safe for the child and can provide entertainment and engagement without posing a risk of injury. The other options, such as a duck that squeaks, a fashion doll and clothes, and a handheld video game, may not be as suitable for a child in a spica cast due to safety concerns, lack of interactive play, or developmental appropriateness.
4. The child is 3 years old and is 2 hours postop from a cardiac catheterization via the right femoral artery. Which assessment finding indicates arterial obstruction?
- A. Blood pressure is decreasing, and the pulse is rapid and irregular.
- B. The right foot feels cool to the touch and appears pale and blanched.
- C. The pulse distal to the femoral artery is weaker in the left foot than the right foot.
- D. The pressure dressing at the right femoral area is damp and oozing blood.
Correct answer: B
Rationale: A cool, pale, and blanched foot is indicative of arterial obstruction, leading to poor blood flow. This finding requires immediate intervention to prevent further complications such as tissue damage or necrosis. Monitoring for signs of arterial compromise, such as color changes, temperature, and capillary refill, is crucial in detecting and managing vascular complications post-cardiac catheterization. Choices A, C, and D do not directly indicate arterial obstruction. While a decreasing blood pressure and rapid, irregular pulse may suggest compromise, these findings are more nonspecific. A weaker pulse distal to the femoral artery indicates reduced perfusion but not necessarily arterial obstruction. Finally, a damp, oozing pressure dressing suggests a dressing issue rather than arterial obstruction.
5. 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.
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