Which laboratory result confirms to the nurse that therapy for pernicious anemia has been effective?
A) An increase in ferritin levels
B) An increase in folate levels
C) An increase in transferrin levels
D) An increase in vitamin B12 levels
D) An increase in vitamin B12 levels
Explanation: A) Because decreased values of vitamin B12 indicate pernicious anemia, the nurse would expect vitamin B12 levels to rise with effective therapy. Ferritin and transferrin levels are not affected in pernicious anemia. Because folate levels may increase with pernicious anemia, folate levels should be reduced with effective therapy.
B) Because decreased values of vitamin B12 indicate pernicious anemia, the nurse would expect vitamin B12 levels to rise with effective therapy. Ferritin and transferrin levels are not affected in pernicious anemia. Because folate levels may increase with pernicious anemia, folate levels should be reduced with effective therapy.
C) Because decreased values of vitamin B12 indicate pernicious anemia, the nurse would expect vitamin B12 levels to rise with effective therapy. Ferritin and transferrin levels are not affected in pernicious anemia. Because folate levels may increase with pernicious anemia, folate levels should be reduced with effective therapy.
D) Because decreased values of vitamin B12 indicate pernicious anemia, the nurse would expect vitamin B12 levels to rise with effective therapy. Ferritin and transferrin levels are not affected in pernicious anemia. Because folate levels may increase with pernicious anemia, folate levels should be reduced with effective therapy.
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