Correct Answer: A

Rationale: Administering a bronchodilator is the priority intervention for a child experiencing an acute asthma exacerbation. Bronchodilators help to dilate the airways quickly, providing immediate relief by opening up the narrowed air passages in asthma. Antihistamines are not the first-line treatment for asthma exacerbations and may not address the underlying bronchoconstriction. Corticosteroids are important for long-term control of asthma but may take longer to have an effect compared to bronchodilators. Administering oxygen is essential for hypoxemia in asthma exacerbations, but the priority is to relieve bronchoconstriction promptly with a bronchodilator.

Correct Answer: A

Rationale: The correct answer is A: petechiae, infection, fatigue. In leukemia, bone marrow involvement leads to a decrease in normal blood cell production, resulting in petechiae (small red or purple spots on the skin), increased susceptibility to infections due to decreased white blood cells, and fatigue from anemia. Choices B, C, and D are incorrect because they do not directly relate to the typical signs and symptoms of leukemia with bone marrow involvement. Headache, papilledema, irritability, muscle wasting, weight loss, decreased intracranial pressure, psychosis, and confusion are not typically associated with leukemia and bone marrow involvement.

Correct Answer: B

Rationale: The correct statement regarding 2-rescuer child CPR is to compress the chest with one or two hands to a depth equal to one-half to one third the diameter of the chest. This technique ensures effective chest compressions without causing excessive damage to the chest. Choice A is incorrect because allowing the chest to fully recoil between compressions is essential to facilitate optimal blood flow during CPR. Choice C is incorrect as it describes a compression to ventilation ratio of 30:2, which is not the recommended ratio for child CPR. Choice D is incorrect as a compression to ventilation ratio of 15:2 is not standard practice for child CPR, and pauses in compressions are necessary to provide ventilations effectively.

Correct Answer: B

Rationale: The correct answer is B: Steroids. Children receiving steroids should not receive the varicella vaccine as it can increase the risk of severe infection due to the immunosuppressive effects of steroids. Insulin (Choice A) is not a medication that contraindicates varicella vaccination. Antibiotics (Choice C) and anticonvulsants (Choice D) are also not medications that would impact the decision to immunize against varicella.

Correct Answer: C

Rationale: The correct answer is C. At the age of 8, children are typically eager to take on responsibilities and participate in self-care activities. This is a crucial developmental characteristic to consider when educating a child about managing a chronic condition like type 1 diabetes. Choice A is incorrect as children at this age are usually in the concrete operational stage, not abstract level, of cognition. Choice B is incorrect because while peer influence is important, it does not reach its peak at this age. Choice D is incorrect as exploring self-identity is more characteristic of adolescence, not 8-year-old children.