A nurse is planning care for a client who has pernicious anemia. Which of the following interventions should the nurse plan to implement?

A. Vitamin B12 injections are the primary treatment for pernicious anemia. This condition results from vitamin B12 deficiency due to the lack of intrinsic factor in the stomach, which is necessary for B12 absorption. Administering vitamin B12 parenterally bypasses the need for intrinsic factor, allowing for effective treatment and prevention of neurological complications associated with B12 deficiency. B. Blood transfusions are not routinely used for pernicious anemia unless the client has severe anemia causing symptomatic cardiovascular compromise. They do not address the underlying vitamin B12 deficiency. C. Iron supplements are used for iron-deficiency anemia, not pernicious anemia. Pernicious anemia is typically macrocytic, not microcytic, and iron supplementation alone would not correct the underlying problem. D. Vitamin B6 supplements are used to treat specific types of anemia caused by B6 deficiency, such as sideroblastic anemia, but are not effective in pernicious anemia.