Certified Nephrology Nurse Certification (CNN) Practice Exam 2025 - Free Nephrology Nursing Practice Questions and Study Guide

For patients with chronic kidney disease (CKD), anemia is a common complication that often stems from inadequate erythropoietin production by the kidneys, as well as deficiencies in important nutrients such as iron. Iron is a critical component of hemoglobin in red blood cells, and a deficiency can lead to reduced oxygen transport, exacerbating anemia.

The recommendation of iron supplements for CKD patients focuses on replenishing iron stores, particularly when patients are on dialysis or have low serum ferritin levels. Maintaining adequate iron levels not only helps improve hemoglobin concentrations but also enhances the efficacy of erythropoiesis-stimulating agents that may be used in these patients.

On the other hand, while Vitamin C and calcium can have their roles in overall health, they do not specifically address the issue of anemia in CKD. Vitamin C has antioxidant properties and may support iron absorption, but it is not a stand-alone treatment for anemia. Potassium is important for many bodily functions, especially in kidney health, but high levels can be a concern for CKD patients, and it does not play a direct role in preventing or treating anemia.