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17 Cards in this Set
- Front
- Back
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What tests are used to diagnose anemia?
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CBC with cell indices including RBC, Hgb, Hct, RBC indices, WBC count, platelet count, and RDW
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Define anosicytosis and the 3 types.
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-variation in RBC size
-microcytic: MCV < 80 fL -normocytic: MCV 80-100 fL -macrocytic: MCV > 100 fL |
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poikilocytosis
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variations in RBC shape
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Name for spherical RBCs.
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spherocytes
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Name for oval RBCs.
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ovalocytes
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Name for RBCs with slit-like central pallor.
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stomatocytes
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Name for RBCs that are hypochromic with central area of hemoglobin.
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target cells
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Name for RBCs with finger like crystals through membrane.
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Hgb SC crystals
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Name for fragmented RBCs.
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schistocytes
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Name for crenated RBCs.
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echinocytes
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Describe what anemias can be determined from an absolute reticulocyte count.
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-high reticulocyte count anemia indicates shortened RBC lifespan possibly caused by hemolysis or acute blood loss
-low reticulocyte count anemia indicates decreased RBC production possibly caused by iron deficiency, aplastic anemia, or folate deficiency |
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Define IDA. Describe the 3 types.
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iron deficiency anemina
-stage I: storage iron depleted, anemia not apparent ferritin decreases -stage II: transport iron depleted TIBC increases -stage III: iron for HGB decreases, symptoms appear |
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Define TIBC.
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available binding sites of iron in the plasma
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How can lead poisoning cause anemia?
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lead blocks enzymes in the heme synthesis pathways
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Define hemochromatosis. What is a cause?
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-iron overload
-can be caused by iron being absorbed faster than it can be released |
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Describe a blood smear examination affected by folate and B12 deficiency.
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macrocytosis and hypersegmented neutrophils
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What is aplastic anemia? How is it classified by morphology?
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-bone marrow failure, causing one or more blood cell lines to cease production
-can be normocytic and normochromic |
