In polycythemia vera, therapeutic phlebotomies reduce the total red cell mass by removing 350-500 mL over 2-3 days until the hematocrit is maintained at __________ percent.

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Therapeutic phlebotomies in polycythemia vera aim to maintain the hematocrit at 40-45%. Higher hematocrit levels increase the risk of thrombotic events, while lower levels may cause anemia and organ damage. Therefore, maintaining the hematocrit at this level is optimal for patient outcomes.

In Polycythemia Vera, Therapeutic Phlebotomies Reduce the Total Red Cell