Final answer:
The therapeutic effect of epoetin is increased hemoglobin (Hgb) levels in clients with kidney failure. Epoetin stimulates the production of red blood cells in the bone marrow, improving the oxygen-carrying capacity of the blood.
Step-by-step explanation:
The therapeutic effect of epoetin, a medication taken by a client with kidney failure, is increased hemoglobin (Hgb) levels. Epoetin stimulates the production of red blood cells (erythrocytes) in the bone marrow, which leads to an increase in Hgb levels. This helps to improve the oxygen-carrying capacity of the blood and alleviate symptoms associated with kidney failure.