A preschool-age child with sickle cell anemia is admitted to the health care facility in vaso-occlusive crisis after developing a fever and joint pain. What is the nurse’s highest priority when caring for this child（）
A. Providing fluids.
B. Maintaining protective isolation.
C. Applying cool compresses to affected joints.
D. Administering antipyretics, as prescribed.
参考答案：A
解析：
During a vaso-occlusive crisis, sickle-shaped red blood cells (RBCs) clump together and obstruct blood vessels, causing ischemia and tissue damage. Providing IV and oral fluids promotes hemodilution, which aids the free flow of RBCs through blood vessels. The client must be kept away from known infection sources but doesn’t require protective isolation. Warm compresses may be applied to painful joints to promote comfort; cool compresses would cause vasoconstriction, which exacerbates sickling. Antipyretics may be administered to reduce fever but don’t play a crucial role in resolving the crisis.