Chapter 24: The Child with Hematologic or Immunologic Dysfunction - Nurselytic

Correct Answer: B

Rationale: Deferoxamine infusions chelate and excrete excess iron, minimizing overload from chronic transfusions. Magnetic therapy is ineffective, hemoglobin electrophoresis is diagnostic, and washing RBCs removes other components, not iron.

Correct Answer: A

Rationale: Aplastic anemia involves bone marrow failure, depressing all blood elements (RBCs, WBCs, platelets). Sickle cell anemia affects hemoglobin, thalassemia major impacts hemoglobin chain production, and iron deficiency reduces RBC size and hemoglobin, not all elements.

Correct Answer: D

Rationale: Immunosuppressive therapy (e.g., antilymphocyte globulin, cyclosporine) treats aplastic anemia, likely an autoimmune condition, improving prognosis. Antibiotics treat infections, not the condition; antiretrovirals and iron are irrelevant to aplastic anemia management.

Correct Answer: B

Rationale: Tissue hypoxia triggers the kidneys to release erythropoietin, stimulating bone marrow to produce RBCs. Hemoglobin levels indirectly influence this through oxygen delivery, reticulocyte count monitors production, and RBC numbers don?t directly control production.

Correct Answer: D

Rationale: Anemia is defined by reduced RBCs or hemoglobin, leading to decreased oxygen-carrying capacity. Increased viscosity occurs with too many cells, a depressed hematopoietic system or abnormal hemoglobin may contribute, but the core defect is reduced oxygen delivery.