In secondary polycythemia, management includes which of the following?

• A. Start Phlebotomy
• B. Treat Underlying Disorder
• C. Steroids
• D. Antibiotics

Answer: (B)

Secondary polycythemia happens when the red cell mass increases in response to a persistent stimulus for erythropoietin, usually chronic hypoxia or ectopic EPO production. Because the excess RBCs are a reaction to an underlying problem, the most effective management is to identify and fix that root cause. For someone with COPD or chronic lung disease, that means improving oxygenation and addressing hypoxemia. If the patient lives at high altitude or has untreated obstructive sleep apnea, adjusting those conditions or providing supplemental oxygen or CPAP can reduce the drive to make more red cells. If an EPO-secreting tumor is present, treating the tumor is the correct step.

Phlebotomy is mainly used for primary polycythemia (where the problem is a clonal red cell overproduction) and is not routinely used in secondary polycythemia because removing blood can worsen oxygen delivery without addressing the underlying stimulus. Steroids and antibiotics do not target the underlying cause of secondary polycythemia and are not standard therapies for this condition.