- When the coagulation of fresh whole blood is prevented through the use of an anticoagulant, the straw-colored fluid that can be separated from the cellular elements is
A. serum
B. plasma
c. whole blood
D. platelets
B. plasma
- Which characteristic is inaccurate with respect to the anticoagulant
Кз EDTA?
A. Removes ionized calcium (Ca?*) from fresh whole blood by the process of chelation
B. Is used for most routine coagulation studies
C. Is the most commonly used anticoagulant in hematology
D. Is conventionally placed in lavender-stoppered evacuated tubes
B. Is used for most routine coagulation studies
- Heparin inhibits the clotting of fresh whole blood by neutralizing the effect of
A. platelets
B. ionized calcium (Ca?*)
C. fibrinogen
D. thrombin
D. thrombin
- The conventional color-coded evacuated tube stopper for EDTA anticoagulant is
A. red
B. lavender
c. blue
D. green
B. lavender
- The conventional color-coded evacuated tube stopper for heparin is
A. red
B. lavender
c. blue
D. green
D. green
- The conventional color-coded evacuated tube stopper for sodium citrate is
A. red
B. lavender
C. blue
D. green
C. blue
- The conventional color-coded stopper when no anticoagulant or additive is present in an evacuated tube is
A. red
B. lavender
C. blue
D. green
A. red
8 through 12. List the following five procedural steps in the performance of a venipuncture in the correct sequence.
A. Select an appropriate site and preparethe site.
B. Identify the patient, check test
requisitions, assemble equipment, washhands, and put on latex gloves.
c. aeropesure use and ane ale.
tubes.
D. Reapply the tourniquet and perform the venipuncture.
E. Introduce yourself and briefly explain the procedure to the patient.
E
B
A
D
C
- The appropriate veins for performing a routine venipuncture are
the
A. cephalic, basilic, and median cubital
B. subclavian, iliac, and femoral
C. brachiocephalic, jugular, and popliteal
D. saphenous, suprarenal, and tibial
A. cephalic, basilic, and median cubital
*14. A blood sample is needed from a patient with IV fluids running in both arms. Which of the following is an acceptable procedure?
A. Any obtainable vein is satisfactory.
B. Obtain sample from above the IV site.
C. Obtain sample from below the IV site with special restrictions.
D. Disconnect the IV line.
E. Do not draw a blood specimen.
C. Obtain sample from below the IV site with special restrictions.
- The bevel of the needle should be held
_ in the performance
of a venipuncture.
A. sideways
B. upward
C. downward
D. in any direction
B. upward
- Ahematoma can form
A. improper pressure is applied to a site after the venipuncture
B. the patient suddenly moves and the needle comes out of the vein
C. the needle punctures both walls of the vein
D. all of the above
D. all of the above
- Phlebotomy problems can include
A. the use of improper anticoagulants
B. misidentification of patients
C. improper angle of the needle or having the needle up against the side of the vessel wall
D. all of the above
D. all of the above
- Which of the following skin puncture areas is acceptable for the collection of capillary blood from an infant?
A. Previous puncture site
B. Posterior curve of the heel
C. The arch
D. Medial or lateral plantar surface
D. Medial or lateral plantar surface
- The proper collection of capillary blood includes
A. wiping away the first drop of blood
B. occasionally wiping the site with a plain gauze pad to avoid the buildup of platelets
C. avoiding the introduction of air bubbles into the column of blood in a capillary collection tube
D. all of the above
D. all of the above
- A peripheral blood smear can be prepared from
A. EDTA-anticoagulated blood within 1 hour of collection
B. free-flowing capillary blood
C. citrated whole blood
D. both A and B
D. both A and B
- Identify the characteristic(s) of a good peripheral blood smear.
A. It progresses from thick at the point of origin to thin.
B. It has a blunt feathered termination.
C. The outer margins do not touch the edges of the slide.
D. All of the above.
D. All of the above
- Poor blood smears can be caused by
A. a delay in preparing the smear once the drop of blood has been placed on the slide
B. a drop of blood that is too large or too small
C. holding the pusher slide at the wrong angle and poor drying conditions
D. all of the above
D. all of the above
- If a blood smear is too long, the problem can be resolved by
A. decreasing the angle of the pusher slide
B. increasing the angle of the pusher slide
C. using a larger drop of blood
D. pushing the slide slower in smearing out the blood
B. increasing the angle of the pusher slide
*24. The examination of bone marrow is useful in
A. diagnosing a bleeding disorder
B. diagnosing some disorders associated with erythrocytes and leukocytes
C. diagnosing acute leukemias
D. both B and C
D. both B and C
*25. Appropriate bone marrow aspiration sites in an adult are
A. the anterior and posterior iliac crest
B. the sternum and posterior iliac crest
C. Tibia and sternum
D. A, B
D. A, B
- A basic staining effect imparts a(n) ____ color to blood cells
A. orange-red color
B. pink-lilac color
C. blue- purple
D. No effect
C. blue- purple
- An acidic staining effect imparts a(n) ____ color to blood cells
A. orange-red color
B. pink-lilac color
C. blue- purple
D. No effect
A. orange-red color
- A neutrophilic staining effect imparts a(n) ____ color to blood cells
A. orange-red color
B. pink-lilac color
C. blue- purple
D. No effect
B. pink-lilac color
