What is the primary purpose of phlebotomy in the treatment of polycythemia vera?

The primary purpose of phlebotomy in the treatment of polycythemia vera is to reduce red blood cell mass. In polycythemia vera, there is an overproduction of red blood cells, leading to increased blood viscosity and a higher risk of thrombotic events. By performing phlebotomy, healthcare providers can effectively lower the volume of red blood cells in circulation. This helps to improve blood flow and reduces the potential complications associated with the condition, such as clots and cardiovascular issues.

Reducing the red blood cell mass directly addresses one of the hallmark features of polycythemia vera, aiming to restore the blood's normal viscosity and maintain optimal blood circulation. This treatment is a crucial part of managing the disease and improving the patient's overall health and quality of life.