The Quizzes about Principles of Blood Collection

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The Quizzes about Principles of Blood Collection

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Select the ONE answer that is BEST in each case.

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

serum

plasma

whole blood

platelets

Which characteristic is inaccurate with respect to the anticoagulant K3 EDTA?

Removes ionized calcium (Ca2+) from fresh whole blood by the process of chelation

Is used for most routine coagulation studies

Is the most commonly used anticoagulant in hematology

Is conventionally placed in lavender-stoppered evacuated tubes

Heparin inhibits the clotting of fresh whole blood by neutralizing the effect of

platelets

ionized calcium (Ca2+)

fibrinogen

thrombin

The appropriate veins for performing a routine venipuncture are the

cephalic, basilic, and median cubital

subclavian, iliac, and femoral

brachiocephalic, jugular, and popliteal

saphenous, suprarenal, and tibial

A blood sample is needed from a patient with IV fluids running in both arms. Which of the following is an acceptable procedure?

Any obtainable vein is satisfactory.

Obtain sample from above the IV site.

Obtain sample from below the IV site with special restrictions.

Disconnect the IV line.

Do not draw a blood specimen.

The bevel of the needle should be held _____ in the performance of a venipuncture.

sideways

upward

downward

in any direction

A hematoma can form if

improper pressure is applied to a site after the venipuncture

the patient suddenly moves and the needle comes out of the vein

the needle punctures both walls of the vein

all of the above

Phlebotomy problems can include

the use of improper anticoagulants

misidentification of patients

improper angle of the needle or having the needle up against the side of the vessel wall

all of the above

Which of the following skin puncture areas is (are) acceptable for the collection of capillary blood from an infant?

Previous puncture site

Posterior curve of the heel

The arch

Medial or lateral plantar surface

The proper collection of capillary blood includes

wiping away the fi rst drop of blood

occasionally wiping the site with a plain gauze pad to avoid the buildup of platelets

avoiding the introduction of air bubbles into the column of blood in a capillary collection tube

all of the above

A peripheral blood smear can be prepared from

EDTA-anticoagulated blood within 1 hour of collection

free-flowing capillary blood

citrated whole blood

both A and B

Identify the characteristic(s) of a good peripheral blood smear.

It progresses from thick at the point of origin to thin

It has a blunt feathered termination.

The outer margins do not touch the edges of the slide.

All of the above

Poor blood smears can be caused by

a delay in preparing the smear once the drop of blood has been placed on the slide

a drop of blood that is too large or too small

holding the pusher slide at the wrong angle and poor drying conditions

all of the above

If a blood smear is too long, the problem can be resolved by

decreasing the angle of the pusher slide

increasing the angle of the pusher slide

using a larger drop of blood

pushing the slide slower in smearing out the blood

The examination of bone marrow is useful in

diagnosing a bleeding disorder

diagnosing some disorders associated with erythrocytes and leukocytes

diagnosing acute leukemias

both B and C

Appropriate bone marrow aspiration sites in an adult are the

anterior and posterior iliac crest

sternum and posterior iliac crest

tibia and sternum

both A and B

If a blood smear stains too red on microscopic examination of a Wright-stained preparation, possible causes include that

the staining time was too long

the stain was too basic

the buffer was too acidic and the exposure time was too short

the buffer was too basic and the exposure time was too long

MedQuizzes

The Quizzes about Principles of Blood Collection

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Select the ONE answer that is BEST in each case.

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

Which characteristic is inaccurate with respect to the anticoagulant K3 EDTA?

Heparin inhibits the clotting of fresh whole blood by neutralizing the effect of

The appropriate veins for performing a routine venipuncture are the

A blood sample is needed from a patient with IV fluids running in both arms. Which of the following is an acceptable procedure?

The bevel of the needle should be held _____ in the performance of a venipuncture.

A hematoma can form if

Phlebotomy problems can include

Which of the following skin puncture areas is (are) acceptable for the collection of capillary blood from an infant?

The proper collection of capillary blood includes

A peripheral blood smear can be prepared from

Identify the characteristic(s) of a good peripheral blood smear.

Poor blood smears can be caused by

If a blood smear is too long, the problem can be resolved by

The examination of bone marrow is useful in

Appropriate bone marrow aspiration sites in an adult are the

If a blood smear stains too red on microscopic examination of a Wright-stained preparation, possible causes include that

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Ad Blocker Detected

Select the ONE answer that is BEST in each case.

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

Which characteristic is inaccurate with respect to the anticoagulant K3 EDTA?

Heparin inhibits the clotting of fresh whole blood by neutralizing the effect of

The appropriate veins for performing a routine venipuncture are the

A blood sample is needed from a patient with IV fluids running in both arms. Which of the following is an acceptable procedure?

The bevel of the needle should be held _____ in the performance of a venipuncture.

A hematoma can form if

Phlebotomy problems can include

Which of the following skin puncture areas is (are) acceptable for the collection of capillary blood from an infant?

The proper collection of capillary blood includes

A peripheral blood smear can be prepared from

Identify the characteristic(s) of a good peripheral blood smear.

Poor blood smears can be caused by

If a blood smear is too long, the problem can be resolved by

The examination of bone marrow is useful in

Appropriate bone marrow aspiration sites in an adult are the

If a blood smear stains too red on microscopic examination of a Wright-stained preparation, possible causes include that

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