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 is caring for a 4-year-old child who has been diagnosed with measles. Which intervention should the nurse implement to prevent the spread of infection?
- A. Administer antipyretics as prescribed
- B. Place the child in airborne isolation
- C. Encourage fluid intake
- D. Teach the parents about hand hygiene
Correct answer: B
Rationale: Measles is an airborne infection, so placing the child in airborne isolation is crucial to prevent the spread of the virus to others. Airborne isolation precautions help contain infectious respiratory droplets and reduce the risk of transmission to healthcare workers, other patients, and visitors. Administering antipyretics, encouraging fluid intake, and teaching parents about hand hygiene are important aspects of care but do not directly address the prevention of the spread of measles, which requires airborne precautions.
3. The nurse provides information about the human papillomavirus (HPV) vaccine to the mother of a 14-year-old adolescent who came to the clinic this morning complaining of menstrual cramping. Which explanation should the nurse provide to support administering the HPV vaccine to the adolescent at this visit?
- A. Use of protective barriers during sexual activity prevents most strains of HPV infection
- B. Most adolescents are not honest about being sexually active
- C. Not all strains of HPV will be covered if given at a later date
- D. Immunity must be established to prevent future HPV infection and the risk for cervical cancer
Correct answer: D
Rationale: Administering the HPV vaccine at this visit is essential to establish immunity against HPV, thus reducing the risk of HPV infection and cervical cancer. Vaccination is a proactive measure to protect the adolescent's health in the future. Choice A is incorrect because although protective barriers can reduce the risk of HPV transmission, the vaccine provides broader protection. Choice B is incorrect as it makes a generalization about adolescent behavior that is not relevant to vaccination. Choice C is incorrect as it suggests that delaying vaccination would not impact coverage, which is inaccurate as earlier vaccination provides broader protection against HPV strains.
4. 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.
5. The caregiver discovers a 6-month-old infant unresponsive and calls for help. After opening the airway and finding the infant is still not breathing, what action should the caregiver take?
- A. Palpate 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: Providing two breaths that make the chest rise is the correct action in this situation. This helps to deliver oxygen to the infant's lungs and body, which is crucial in a situation where the infant is not breathing. Chest rise indicates successful ventilation, and it is an essential step in pediatric resuscitation, especially for infants. Choices A, B, and D are incorrect because palpating the femoral pulse, delivering chest compressions, and feeling the carotid pulse are not the initial actions to take when an infant is not breathing. The priority is to provide effective breaths to establish ventilation.
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