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Hematologic SystemMedical Surgical Nursing

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What is pancytopenia?
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A disruption/decrease in WBC, RBC and platelets
What are some conditions that can decrease hemoglobin levels?
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Anemia, hemorrhage, fluid volume excess
What are some conditions that can increase hemoglobin levels?
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Dehydration, polycythemia.
What is a hematocrit level?
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It is the separation of RBCs and plasma and then the percentage of RBC compared to total blood volume
When is an elevation in WBCs a concern (what value)?
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Elevations over 11,000
When is a reduction (what value) in WBC a concern?
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Under 4000
What can a high WBC count signify?
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Infection, inflammation, malignancies (lymphoma, leukemia, etc.), or trauma
What can a low WBC (leukopenia) count signify?
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Bone marrow depression, severe or chronic illness, leukemia
What is a shift to the left with respect to WBC?
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The release of banded neutrophils into systemic circulation, a severe infection
What is neutropenia?
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A condition where the bone marrow doesn't produce enough neutrophils. Associated with a high risk for infection
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Erythrocyte Sedimentation Rate (ESR) is useful in identifying...
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Inflammatory disorders, MI, malignancy and ESRD
What test is used to determine a person's Rh status?
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The Coombs test
What blood type is the universal recipient?
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What blood type is the universal donor?
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What is the preferred site for a bone marrow aspiration or biopsy?
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The posterior iliac crest
After a needle aspiration or a biopsy of bone marrow is performed, how is bleeding at the site of extraction controlled?
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A sterile pressure dressing is placed on it and the client is told to lay on the side of the biopsy for 30-60 minutes
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