Microhematocit
Microhematocrit
- 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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