Correct Answer: B

Rationale: The correct preoperative intervention for a child with appendicitis scheduled for surgery is maintaining strict NPO (nothing by mouth) status. This is crucial to reduce the risk of aspiration during anesthesia induction and prevent potential complications during surgery. Administering antibiotics may be a part of the treatment plan but is not a preoperative intervention. Encouraging fluid intake is contraindicated preoperatively to avoid delays in surgery and complications related to anesthesia. Monitoring for signs of infection is important postoperatively to assess for any complications that may arise due to the surgical procedure.

Correct Answer: B

Rationale: During a vaso-occlusive crisis in sickle cell anemia, the priority nursing intervention is administering pain medication to alleviate the severe pain associated with the crisis. While administering oxygen can help improve oxygenation, pain relief is crucial in managing the crisis. Monitoring fluid intake is important in sickle cell anemia but is not the most immediate intervention during a vaso-occlusive crisis. Encouraging physical activity is contraindicated during a vaso-occlusive crisis as it can exacerbate pain and complications.

Correct Answer: C

Rationale: Soaking the area in warm water is the most appropriate instruction for a child who is having their cast removed. This method helps to gently remove dead skin without causing irritation. Applying petroleum jelly to dry skin (Choice A) is not recommended as it may not effectively aid in the removal of dead skin. Rubbing the skin vigorously (Choice B) can lead to skin irritation and should be avoided. Washing the skin with diluted peroxide and water (Choice D) may be too harsh, causing unnecessary irritation to the skin post-cast removal.

Correct Answer: C

Rationale: The correct answer is to place a tracheotomy set at the bedside. Acute laryngotracheobronchitis can cause airway obstruction, which may require an emergency tracheotomy. Having the tracheotomy set readily available ensures quick access in case of respiratory distress. Padding the side rails of the crib, arranging for a quiet, cool room, and obtaining a recliner for a parent are important aspects of care but are not the priority when managing a potentially life-threatening airway emergency.

Correct Answer: A

Rationale: The correct answer is A: 'They may occur in minor illnesses.' Febrile seizures can occur even in minor illnesses, particularly in young children, and are often triggered by a rapid increase in body temperature. Choice B is incorrect because the cause of febrile seizures is not always readily identified. Choice C is incorrect as febrile seizures commonly occur in children aged 6 months to 5 years, which includes the toddler years. Choice D is incorrect as febrile seizures are slightly more common in males than females.