Correct Answer: B

Rationale: The priority nursing intervention for a child with bronchiolitis is providing respiratory therapy. This intervention aims to maintain airway patency, optimize oxygenation, and support effective breathing. Administering bronchodilators, though important, may not be the initial priority as respiratory therapy takes precedence in ensuring adequate oxygenation and ventilation. Monitoring oxygen saturation is crucial but is usually part of the ongoing assessment following the initiation of respiratory therapy. Encouraging fluid intake is essential for hydration but is not the priority intervention when addressing the respiratory distress associated with bronchiolitis.

Correct Answer: C

Rationale: The correct answer is C. In type 2 diabetes mellitus, excessive thirst (polydipsia) is a common symptom due to high blood glucose levels. This results in the patient feeling unable to drink enough water to satisfy their thirst. The other options are incorrect because a recent 'cold or flu' (choice A) is not directly related to diabetes mellitus, decreased blood pressure (choice B) is not a typical finding in uncontrolled diabetes, and Kussmaul breathing (choice D) is associated with diabetic ketoacidosis, which is more common in type 1 diabetes mellitus.

Correct Answer: C

Rationale: The correct hematocrit range for a healthy 12-month-old infant is between 37% to 47%. At this age, this range reflects the normal blood volume and red blood cell (RBC) levels in infants. Choice A (19% to 32%) is too low for a healthy hematocrit level in a 12-month-old. Choice B (29% to 41%) is also below the typical range for a 12-month-old. Choice D (42% to 69%) includes an upper limit that is higher than expected for a healthy infant, making it an incorrect option.

Correct Answer: B

Rationale: The correct answer is B. Participation in contact sports like football should be avoided in children with idiopathic thrombocytopenia due to the increased risk of bleeding. Choices A, C, and D are incorrect because avoiding aspirin and drugs like ibuprofen, engaging in activities like swimming, and avoiding antihistamines are all appropriate recommendations for a child with idiopathic thrombocytopenia to prevent bleeding episodes and ensure safety.

Correct Answer: B

Rationale: The correct answer is B. Urticaria is a type I hypersensitivity reaction, not type IV. When triggered, histamine release leads to vasodilation, causing characteristic wheals. Wheals are typically followed by erythema. The rash in urticaria is pruritic and does blanch with pressure, unlike the nonpruritic rash described in choice D. Therefore, the most appropriate description of urticaria includes histamine release and vasodilation, as stated in choice B.