Chelation therapy is begun on a child with ?-thalassemia major. The purpose of this therapy is to:
a. Treat the disease. c. Decrease the risk of hypoxia.
b. Eliminate excess iron. d. Manage nausea and vomiting.
ANS: B
A complication of the frequent blood transfusions in thalassemia is iron overload. Chelation therapy with deferoxamine (an iron-chelating agent) is given with oral supplements of vitamin C to increase iron excretion. Chelation therapy treats the side effects of disease management. Decreasing the risk of hypoxia and managing nausea and vomiting are not the purposes of chelation therapy.
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