The clinic nurse is teaching parents about physiologic anemia that occurs in infants. What statement should the nurse include about the cause of physiologic anemia?
a. Maternally derived iron stores are depleted in the first 2 months.
b. Fetal hemoglobin results in a shortened survival of red blood cells.
c. The production of adult hemoglobin decreases in the first year of life.
d. Low levels of fetal hemoglobin depress the production of erythropoietin.
ANS: B
Fetal hemoglobin results in a shortened survival of red blood cells (RBCs) and thus a decreased number of RBCs. Maternally derived iron stores are present for the first 5 to 6 months results in a shortened survival of RBCs and thus a decreased number of RBCs. High levels of fetal hemoglobin depress the production of erythropoietin, a hormone released by the kidney that stimulates RBC production.
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