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  2. Hematocrit - Wikipedia

    en.wikipedia.org/wiki/Hematocrit

    Lowered hematocrit levels also pose health impacts. These causes and impacts have been reported: A low hematocrit level is a sign of a low red blood cell count. One way to increase the ability of oxygen transport in red blood cells is through blood transfusion, which is carried out typically when the red blood cell count is low.

  3. Polycythemia - Wikipedia

    en.wikipedia.org/wiki/Polycythemia

    Polycythemia is sometimes called erythrocytosis, and there is significant overlap in the two findings, but the terms are not the same: polycythemia describes any increase in hematocrit and/or hemoglobin, while erythrocytosis describes an increase specifically in the number of red blood cells in the blood. [citation needed]

  4. Hemorheology - Wikipedia

    en.wikipedia.org/wiki/Hemorheology

    One unit increase in hematocrit can cause up to a 4% increase in blood viscosity. [2] This relationship becomes increasingly sensitive as hematocrit increases. When the hematocrit rises to 60 or 70%, which it often does in polycythemia , [ 4 ] the blood viscosity can become as great as 10 times that of water, and its flow through blood vessels ...

  5. Polycythemia vera - Wikipedia

    en.wikipedia.org/wiki/Polycythemia_vera

    In oncology, polycythemia vera (PV) is an uncommon myeloproliferative neoplasm in which the bone marrow makes too many red blood cells. [1] The majority of cases [2] are caused by mutations in the JAK2 gene, most commonly resulting in a single amino acid change in its protein product from valine to phenylalanine at position 617.

  6. Drug-induced autoimmune hemolytic anemia - Wikipedia

    en.wikipedia.org/wiki/Drug-induced_autoimmune...

    Drug-induced autoimmune hemolytic anemia causes a significant drop in hemoglobin and hematocrit. Occasionally DIIHA can present with mild leukocytosis. In its earlier stages patients with DIIHA will have low reticulocytes. As HIIHA progresses reticulocytes increase leading to an elevated mean corpuscular volume.

  7. Normocytic anemia - Wikipedia

    en.wikipedia.org/wiki/Normocytic_anemia

    an uncompensated increase in plasma volume (e.g., pregnancy, fluid overload); a B2 deficiency [3] a B6 deficiency [3] or a mixture of conditions producing microcytic and macrocytic anemia. [1] Blood loss, suppressed production of RBCs or hemolysis represent most cases of normocytic anemia.

  8. Reticulocyte production index - Wikipedia

    en.wikipedia.org/wiki/Reticulocyte_production_index

    It should increase within 2–3 days of a major acute hemorrhage, for instance, and reach its peak in 6–10 days. [3] If reticulocyte production is not raised in response to anemia, then the anemia may be due to an acute cause with insufficient time to compensate, or there is a defect with red blood cell production in the bone marrow.

  9. Mean corpuscular volume - Wikipedia

    en.wikipedia.org/wiki/Mean_corpuscular_volume

    The measure is obtained by multiplying a volume of blood by the proportion of blood that is cellular (the hematocrit), and dividing that product by the number of erythrocytes (red blood cells) in that volume. The mean corpuscular volume is a part of a standard complete blood count.

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