Correct Answer: C

Rationale: In small children, altered mental status can manifest as a lack of attention to the presence of unfamiliar individuals, such as the EMT-B. This lack of engagement may indicate confusion, disorientation, or impaired cognitive function. Choices A, B, and D are incorrect as recognizing parents, exhibiting fear, or maintaining consistent eye contact do not necessarily indicate altered mental status. Recognizing parents is a normal response, fear can be a typical reaction to unfamiliar situations, and making eye contact may be a sign of curiosity or comfort rather than a reflection of mental status.

Correct Answer: C

Rationale: The correct answer is C. The child's behavior of smiling easily, interacting happily with nurses, and showing disinterest in the parent when they visit indicates that the child has emotionally withdrawn and accepted the separation. This response suggests that the child may have given up fighting against the separation from the parent due to prolonged hospitalization. Choices A, B, and D are incorrect. Choice A about the child repressing feelings towards the parent is not supported by the scenario. Choice B about routines and feeling safe does not address the emotional aspect of the child's behavior. Choice D about improved behavior due to feeling better physically does not explain the emotional dynamics at play in the child's behavior.

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: D

Rationale: The Resiliency model of family stress, adjustment, and adaptation is the appropriate theory in this scenario. This model focuses on identifying risks and protective factors that help families achieve positive outcomes despite challenges. Duvall's developmental theory primarily focuses on family life cycle stages, Friedman's structural functional theory emphasizes the interdependence of family members, and Von Bertalanffy's general system theory applied to families looks at the family as a dynamic system. These theories do not specifically address the concept of resilience and adaptation in the face of stressors like homelessness.

Correct Answer: B

Rationale: The correct answer is to monitor for signs of dehydration. After treatment for dehydration, it is crucial to educate caregivers about recognizing early signs of dehydration to prevent its recurrence. Monitoring for dehydration ensures that appropriate measures can be taken promptly if signs reappear. Choices A, C, and D are incorrect because infection, hypovolemia, and malnutrition, while important considerations in healthcare, are not the primary focus after treating dehydration in a 3-year-old child.