Adult-Gerontology Clinical Nurse Specialist (CNS) Practice Exam

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What supplement is required for a person with pernicious anemia?

  1. Vitamin K

  2. Vitamin E

  3. Vitamin B6

  4. Vitamin B12

The correct answer is: Vitamin B12

Pernicious anemia is primarily caused by the inability to absorb vitamin B12 due to a lack of intrinsic factor, which is necessary for the absorption of this vitamin in the intestines. The condition leads to a deficiency of vitamin B12, which is crucial for producing red blood cells and maintaining the health of nerve tissues. Consequently, individuals with pernicious anemia require supplementation of vitamin B12 to correct the deficiency and manage symptoms effectively. This can often be administered through injections or high-dose oral supplements, especially since many affected individuals may struggle with the intestinal absorption of nutrients. In this context, vitamin B12 emerges as the essential supplement for addressing the specific needs of those with pernicious anemia.

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