Correct Answer: B

Rationale: Invasive burn cellulitis is characterized by the burn developing a dark brown, black, or purplish color with discharge and a foul odor. This description aligns with the symptoms observed in the 15-year-old boy. Burn wound cellulitis (Choice A) typically presents with erythema, edema, warmth, and tenderness at the burn site, without the characteristic changes seen in this case. Burn impetigo (Choice C) is a superficial infection characterized by honey-colored crusts, not consistent with the purplish color and foul odor described. Staphylococcal scalded skin syndrome (Choice D) is a condition caused by exotoxins produced by Staphylococcus aureus, leading to widespread desquamation of the skin, but it does not typically present with the specific findings mentioned in the scenario.

Correct Answer: A

Rationale: When assessing a 2-year-old child with abdominal pain and adequate perfusion, it is important to examine the child in the parent's arms. This approach helps reduce the child's anxiety, provides comfort, and can facilitate a more accurate assessment. Palpating the painful area of the abdomen first (choice B) may cause discomfort and increase anxiety in the child. Placing the child supine and palpating the abdomen (choice C) without considering the child's comfort and security may lead to resistance and inaccurate assessment. Separating the child from the parent to ensure a reliable examination (choice D) can further increase anxiety and hinder the assessment process. Therefore, examining the child in the parent's arms (choice A) is the most appropriate and effective approach in this scenario.

Correct Answer: D

Rationale: The correct answer is 'D. Low-grade fever.' A low-grade fever is a common and mild side effect of the Hib vaccine, indicating that the immune system is responding to the immunization. Lethargy (choice A) can be a sign of more serious adverse effects and should be monitored closely but is not typically associated with the Hib vaccine. Urticaria (choice B) and generalized rash (choice C) are less common side effects of the Hib vaccine compared to low-grade fever.

Correct Answer: A

Rationale: The inability to copy a square at 3 years old indicates a potential developmental delay in fine motor skills. At this age, children should be able to copy basic shapes like circles and crosses. Hopping on one foot is typically expected around the age of 4, catching a ball reliably around 5, and using a spoon effectively by 2-3 years old. Therefore, choices B, C, and D are not as indicative of a developmental delay at 3 years old as the inability to copy a square.

Correct Answer: A

Rationale: The correct answer is monitoring fluid and electrolyte balance. Gastroenteritis is characterized by inflammation of the gastrointestinal tract leading to diarrhea and vomiting, which can result in dehydration and electrolyte imbalances. Therefore, the priority nursing intervention is to monitor and maintain the child's fluid and electrolyte balance to prevent complications. Encouraging regular exercise (Choice B) may not be appropriate initially for a child with gastroenteritis who needs rest and fluid replacement. Administering antipyretics (Choice C) is not the priority unless the child has a fever. Administering antibiotics (Choice D) is not indicated for viral gastroenteritis, which is the most common cause of the condition.