Microhematocit

19 Questions | Total Attempts: 225

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Microhematocit

Microhematocrit


Questions and Answers
  • 1. 
    Which two hematocrit duplicate results can be used
    • A. 

      32% and 34%

    • B. 

      32% and 35%

    • C. 

      35% and 38%

    • D. 

      29% and 32%

  • 2. 
    Which duplicate hematocrit results can not be used
    • A. 

      32% and 32%

    • B. 

      29% and 31%

    • C. 

      38% and 40%

    • D. 

      32% and 35%

  • 3. 
    If John's hematocrit reading is 27% what should his hemoglobin value be?
    • A. 

      71g/dL

    • B. 

      9g/dL

    • C. 

      54g/dL

    • D. 

      29%

  • 4. 
    If Annie's hemoglobin is 18 g/dL, what should her hematocrit be?
    • A. 

      6%

    • B. 

      6 g/dL

    • C. 

      54 g/dL

    • D. 

      54%

  • 5. 
    Choose all of the following that would lead to an increase in hematocrit values
    • A. 

      Living at higher altitudes

    • B. 

      Severe dehydration

    • C. 

      Anemia

    • D. 

      Polycythemia

    • E. 

      Leukemia

    • F. 

      Bleeding

  • 6. 
    Choose all of the following that would lead to a decrease  in hematocrit values
    • A. 

      Living at higher altitudes

    • B. 

      Severe dehydration

    • C. 

      Anemia

    • D. 

      Polycythemia

    • E. 

      Leukemia

    • F. 

      Bleeding

  • 7. 
    In a spun hematocrit, very cloudy plasma indicates
    • A. 

      High fat level

    • B. 

      High bilirubin level

    • C. 

      Leukocytosis due to infection or leukemia

  • 8. 
    In a spun hematocrit, dark plasma  or plasma that is very yellow indicates
    • A. 

      High fat level

    • B. 

      High bilirubin level

    • C. 

      Leukocytosis due to infection or leukemia

  • 9. 
    In a spun hematocrit, a very prominent buffy coat layer  indicates
    • A. 

      High fat level

    • B. 

      High bilirubin level

    • C. 

      Leukocytosis due to infection or leukemia

  • 10. 
    Select all safety procedures that must be followed when performing a microhematocrit test
    • A. 

      Plastic capillary tubes can be used

    • B. 

      Mylar wrapped capillary tubes can be used

    • C. 

      Self sealing tubes can be used

    • D. 

      The centrifuge interior should be cleaned frequently to prevent the build up of aerosol

    • E. 

      The inner and external lid must be locked in place before operating the instrument

    • F. 

      The rotor must come to a complete stop before the centrifuge is opened

    • G. 

      The regular glass tube with no Mylar wrap is recommended due to its optical clarity

  • 11. 
    Select all quality assesment procedures that must be followed
    • A. 

      The centrifuge is use must be calibrated

    • B. 

      Fill microhematocrit tubes at least three quarter full

    • C. 

      Run each patient sample in duplicates

    • D. 

      The duplicate samples must agree within + or - 2%

    • E. 

      Repeat the test if results do not agree within + or - 2%

    • F. 

      Run hematology controls daily and chart the results

    • G. 

      Mix venous blood specimens adequately before obtaining the two capillary tubes

    • H. 

      Triplicate tubes are required

    • I. 

      Follow the standard operating procedure (SOP) manual when choosing appropriate time and speed

    • J. 

      Collect capillary blood in heparinized tube to prevent clotting

    • K. 

      Avoid air bubbles in the capillary tubes

  • 12. 
    Blood must be inverted  60 times or placed on a mechanical mixer for a minimum of 2 minutes before capillary blood is obtained
    • A. 

      True

    • B. 

      False

  • 13. 
    Blood is drawn into the capillary tubes by capillary action
    • A. 

      True

    • B. 

      False

  • 14. 
    The capillary tubes do not need to the balanced in the microhematocrit centrifuge, since they are very small
    • A. 

      True

    • B. 

      False

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