Page 667 - Clinical Hematology_ Theory _ Procedures ( PDFDrive )

CHAPTER 30 ■ Instrumentation in Hematology 651

REVIEW QUESTIONS (continued)

16. Te RDW and MCV are both quantitative descrip- 24. Te MPV is o en decreased

tors o erythrocyte size. I both are increased, the most A. in sickle cell anemia

probable erythrocytic abnormality would be B. in megaloblastic anemia

A. iron de ciency anemia C. in idiopathic thrombocytopenic purpura

B. acquired aplastic anemia D. a er splenectomy

C. megaloblastic anemia

D. hemoglobinopathy 25. A normal PDW is

A. less than 5%
*17. I the RBC distribution on a histogram demonstrates B. less than 10%

a homogeneous pattern and a small SD, the peripheral C. less than 15%

blood smear would probably exhibit D. less than 20%

A. extreme anisocytosis

B. very little anisocytosis 26. Which o the ollowing can be an application o f ow-

C. a single population o spherocytes cell cytometry?

D. a single population o macrocytes A. Screening erythrocytes or malaria

B. Counting o reticulocytes
18. Te can be determined rom a WBC histogram. C. Quantitation o and B cells

A. percent o lymphocytes D. All o the above

B. absolute number o lymphocytes

C. requency distribution o granulocytes 27. Major systems in a f ow cytometer include all o the

D. all o the above ollowing except

A. fuidics
19 and 20. Te sorting o leukocyte subpopulations in the B. optics

WBC histogram determined by electrical impedance ref ects C. computerized electronics

the (19) , which is primarily related to their (20) .
D. gating

19. *28. T e restriction o data analysis to one cell population
A. overall size is accomplished by

B. relative size A. ampli cation

C. nuclear size

D. chromatin pattern B. gating
C. compensatory monitoring

20. D. data limitation

A. cytoplasmic size
B. nuclear size 29. Which cell sur ace membrane marker is used or enu-

C. concentration o granules meration o HPC enumeration?
D. cytoplasmic color A. CD4

B. CD8

21. T e mononuclear cells in a WBC histogram can include C. CD34

A. blast cells D. CD45

B. promyelocytes

C. monocytes 30. Reticulocytes can be detected by using stain.

D. all o the above A. new methylene blue

B. thiazole orange
*22. A combined scatter histogram measures C. propidium iodide

A. overall size versus nuclear size D. both A and B

B. cytoplasm-to-nucleus ratio

C. cell size and granularity 31. Te newer clinical instruments or measuring blood

D. cell shape and cytoplasmic color clotting are based on

A. clot elasticity
23. Te MPV is B. brin adhesion

A. analogous to the MCHC C. conduction o impedance o an electrical current by

B. a direct measure o the platelet count brin

C. a measurement o the average volume o platelets

D. a comparison o the patient’s value to the normal value D. changes in optical density

(continued)