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Hematology Exam 5 Review Questions Flashcards | StudBud
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Hematology Exam 5 Review Questions
Hematology Exam 5 Review Questions
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1
Where are granulocytes located on this WBC histogram?
B
C
Over the rainbow
A
2
Principle of cell counting that is based upon measuring change in voltage as cells pass through an aperture
Impedence
Flow Cytometry
LC-MS
Light Scatter
3
What do you suspect when viewing this histogram?
Electrical Interference
Immature Granulocytes
Bubbles
Microcytes
4
RBC, WBC, and platelet counts are determined by calculation.
False
True
5
NRBC's are counted as WBC's because___________.
of their size.
morph into lymphocytes.
they aren't lysed.
they are a type of granulocyte.
6
The highly elevated granulocyte counts found in CML may cause__________.
RBC count to be falsy decreased.
RBC count to be falsly elevated.
falsly elevated platelet count.
the analyzer to shut down.
7
The MCHC is 38% and the chemistry tech tells you her sample is very lipemic. How can you correct the results?
Don't worry. Report the results.
Perform a plasma replacement.
Add a drop of albumin.
Send the patient home on a low fat diet and to come back in a week.
8
Elements of CBC that are calculated. (Choose all the correct answers.)
Hematocrit
MCH/MCHC
RDW
MCV
9
Your analyzer gives an R3 flag and the following histograms. What type of anemia is present?
Megaloblastic anemia
Microcytic Hypochromic
Normocytic Normochromic
Spherocytosis
10
A falsely elevated RBC count can lead to inaccurate MCV and MCH results.
False
True
11
What WBC flag can indicate atypical lymphs and blasts?
R2
R1
R3
R4
12
What should the MLS do if the analyzer flags a result?
Perform a manual diff.
Perform a plasma replacement.
Cry
Run the CBC off a light blue top specimen.
13
An R3 flag at 160 fL indicates the presence of ____________.
Immature Granulocytes and Eosinophilia
Variant Lymphs
Howell Jolly Bodies, Malaria, or Polychromasia
Giant platelets and NRBC's
14
WBC's are included in the RBC count because________.
cells >36 fL are counted as RBC's
the WBC's are ejected in the waste and subtracted from the count.
WBC numbers do not significantly affect RBC count.
anything between 2-20 fL is counted as an RBC.
15
Type of hemoglobin measured by automated systems.
sulfmethemoglobin
Hemoglobin A2
dexoyhemoglobin
cyanmethemoglobin
16
An R1 flag can be caused by giant platelets and malaria.
False
True
17
Where are NRBC's found on the VCS scatterplot?
7
1, 7, and 9
2
5
18
Elevated glucose causes to falsely increased_________.
RBC Count
MCV
MCH
Hemoglobin
19
What do you conclude from these RBC, WBC, and platelet histograms and results?
Your patient has hypochromic/microcytic anemia.
The patient has an NC/NC anemia.
Your patient needs to be redrawn. All values are off.
CBC is within normal range.
20
Manual methods of cell counting produce fewer artifacts and spurious results compared to automated methods.
True
False
