Which symptom is a result of decreased production of renal erythropoietin in chronic renal failure?

In chronic renal failure, decreased production of renal erythropoietin leads to anemia. Erythropoietin is a hormone produced primarily by the kidneys, and its primary role is to stimulate the production of red blood cells (RBCs) in the bone marrow. When the kidneys suffer damage or decline in function, they produce less erythropoietin, which results in reduced red blood cell production. As a consequence, individuals may experience symptoms of anemia, such as fatigue, weakness, and pallor due to insufficient oxygen delivery to tissues.

The other options do not directly relate to the effects of decreased erythropoietin production. Hyperglycemia is related to insulin and glucose metabolism, hypercalcemia is associated with calcium metabolism and parathyroid function, while edema typically results from fluid overload or issues with salt and water balance, often related to other aspects of kidney function rather than erythropoietin levels. Therefore, the primary symptom associated with decreased renal erythropoietin in chronic renal failure is indeed anemia.