What vitamin should a nurse anticipate being prescribed for a client with pernicious anemia?

In the case of pernicious anemia, the primary issue is the body's inability to absorb vitamin B12 due to a deficiency in intrinsic factor, which is necessary for the absorption of this vitamin in the intestines. Therefore, the most appropriate treatment involves supplementing vitamin B12 directly.

Since pernicious anemia specifically stems from a lack of intrinsic factor, individuals with this condition cannot adequately achieve the B12 necessary for red blood cell production, nerve function, and overall cellular metabolism through diet alone. Instead of oral supplements, which may not be effectively absorbed, vitamin B12 is typically administered via injections or high-dose oral supplements to ensure sufficient levels are achieved in the body.

Other vitamins and minerals listed, such as folic acid, vitamin B6, and iron, may play roles in various hematological conditions or support overall health, but they do not address the root cause of pernicious anemia, which is the deficiency of vitamin B12. Thus, prescribing vitamin B12 is a targeted approach to manage the specific needs of a client with this condition.