Whats the difference between polycythemia and polycythemia vera?
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Correspondingly, is polycythemia and polycythemia vera the same?
Primary polycythemias are due to factors intrinsic to red cell precursors. Polycythemia vera (PCV), polycythemia rubra vera (PRV), or erythremia, occurs when excess red blood cells are produced as a result of an abnormality of the bone marrow. PCV is classified as a myeloproliferative disease.
Beside above, what are the two types of polycythemia? There are two main types of polycythemia: primary and secondary. The first is usually caused by a genetic mutation, whereas the latter is caused by an underlying condition that either prevents oxygen delivery to tissues (for example, a lung or heart condition), or a tumor that affects secretion of erythropoietin.
Considering this, can secondary polycythemia turn into polycythemia vera?
Secondary polycythemia is defined as an absolute increase in red blood cell mass that is caused by enhanced stimulation of red blood cell production. In contrast, polycythemia vera is characterized by bone marrow with an inherent increased proliferative activity.
Is high hemoglobin always polycythemia?
Polycythemia is an increased number of red blood cells in the blood. Hemoglobin levels greater than 16.5 g/dL (grams per deciliter) in women and greater than 18.5 g/dL in men suggest polycythemia. In terms of hematocrit, a value greater than 48 in women and 52 in men is indicative of polycythemia.