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18 Cards in this Set
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amt of blood in avg adult?
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4-6 L
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breakdown of plasma to cellular components?
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55% plasma (Proteins: albumin, globulin, fibrinogen; and electrolytes, nutrients, and waste products)
45% cellular components (RBC, WBC, platelets) |
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terms for overproleferation of WBCs?
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Increase: Leukocytosis, lymphocytosis
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what is a reticulocyte?
high levels of reticulocytes can signal... |
immature RBC.
can signal recent blood loss. |
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primary stimulus to signal increase in RBCs?
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hypoxia
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what are B12 and folic acid essential for?
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DNA synthesis
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foods rich in folic acid
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Folic acid found in leafy green vegetables, fruits, legumes, and beans
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source of B12?
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animal foods. or synthetic.
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who is at risk for decreased RBC synthesis?
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Kidney failure (erythropoietin), gastric resection (lack of intrinsic factor), alcoholics, vegans and vegetarians.
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acg life span of RBC
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120 days
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how are RBCs removed from circulation?
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Removed from circulation by reticuloendothelial cells in liver and spleen
Hgb is recycled; portion breaks down to bilirubin and is secreted in bile Iron is recycled to form new Hgb |
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normal leukocyte count?
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Leukocytes: 5,000 to 10,000/mm3
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what's the definition of neutropenia?
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ANC < 2,000
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definition of leukocytosis
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ANC > 7,000
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describe lifespan of platelets
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Circulate for 10 days and removed by macrophages primarily in the spleen
Macrophages are monocytes (WBC) that have migrated into tissues and matured |
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normal platelet count
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150,000 to 350,000 platelets/mm circulating blood
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what is hematocrit?
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The hematocrit (Ht or HCT) or packed cell volume (PCV) or erythrocyte volume fraction (EVF) is the volume percentage (%) of red blood cells in blood. It is normally about 45% for men and 40% for women.[1]
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purpose of bone marrow bx and aspiration?
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Enables diagnosis by evaluating RBCs, WBCs, and platelets
Can stage cancers Determine different causes of infection Can monitor degree of immunosuppression and effectiveness of chemotherapy (treatments) |
