Diagnostic Test Venipuncture

\n Which of the following actions is performed first?

a. Needle is removed from the vein.

b. Pressure is applied to the site.

c. Tourniquet is removed.

d. Needle safety device is activated.

c.Tourniquet is removed.

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Labeling of collection tubes should occur:

a. Before discarding the contaminated needle into a sharps container.

b. At the patient’s side, immediately after drawing the blood.

c. Before entering the patient’s room

d. Only after removing gloves and washing your hands.

b. At the patient’s side, immediately after drawing the blood.

\n Alcohol should be used to cleanse the venipuncture site:

a. After the tourniquet is tied.

b. Before the tourniquet is tied.

c. After the equipment is assembled.

d. Before the question of latex allergies.

a. After the tourniquet is tied.

\n During a venipuncture procedure, a tourniquet should not be left on a patient more

than:

a. 10 seconds

b. 1 minute

c. 2 minutes

d. 3 minutes

b. 1 minute

The following colored tubes with conventional stoppers are to be collected during

routine venipuncture; lavender, red SST, sky blue, yellow (containing SPS).

According to NCCLS guidelines, which tube stopper color should be collected

first?

a. lavender

b. red SST

c. sky blue

d. yellow

c. sky blue

\n The rationale for the sequence of filling tubes for multiple specimen collection

following venipuncture is to prevent:

a. glycolysis

b. hemolysis

c. platelet clumping

d. contamination with anticoagulant

d. contamination with anticoagulant

\n Which is the correct sequence of the following steps when determining the most

appropriate vein with gloved hands in a routine venipuncture procedure:

a. apply alcohol, palpate site, apply tourniquet

b. apply tourniquet, palpate site, release tourniquet

c. palpate site, apply alcohol, release tourniquet

d. palpate site, apply tourniquet, apply alcohol

b. apply tourniquet, palpate site, release tourniquet

\n The maximum number of venipuncture attempts a health professional should

make to secure a specimen is;

a. one

b. two

c. three

d. four

b. two

\n What is the first step in proper patient identification?

a. the health professional asks, “Could you spell your full name?”

b. the nurse identifies the patient by room number.

c. the patient is asked if his name is Mr. Smith

d. the health professional reads the card above the bed.

c. the patient is asked if his name is Mr. Smith

\n What is the correct sequence of the following steps in a routine venipuncture

procedure at the point in which you have entered the appropriate vein?

a. release tourniquet, engage tube, release the anchored vein.

b. release tourniquet, release the anchored vein, engage the tube

c. release the anchored vein, engage tube, release tourniquet

d. release the anchored vein, release tourniquet, engage tube

b. release tourniquet, release the anchored vein, engage the tube

What is the proper arm position for a routine venipuncture?

a. in a downward position with elbow bent to a 90 degree angle

b. straight from shoulder to wrist and in a downward position with the palm up

c. straight from shoulder to wrist with the palm down

d. the position of the arm doesn’t matter

b. straight from shoulder to wrist and in a downward position with the palm up

\n What happens if you advance the tube past the guideline on the holder before

needle insertion?

a. the tube will fail to fill with blood

b. the vacuum will be lost

c. it is necessary to get a new tube

d. all of the above

d. all of the above

Why is it important to remove the evacuated tube from the needle before

withdrawing it from the patient’s arm?

a. to be able to mix the tube as soon as possible

b. to decrease the pain felt by the patient on withdrawal

c. to prevent blood from dripping out of the needle after withdrawal

d. all of the above

c. to prevent blood from dripping out of the needle after withdrawal

\n When must you wash your hands when performing a routine blood draw?

a. only after glove removal

b. before and after the blood draw

c. before approaching the patient

d. washing hands is not necessary if you wear gloves.

b. before and after the blood draw

\n It is important to mix anticoagulant tubes immediately after filling them in order

to:

a. encourage coagulation

b. prevent microclot formation

c. minimize hemolysis

d. all of the above

d. all of the above

\n You are in the middle of drawing a blood specimen using the evacuated tube

method. You realize that you filled the EDTA tube before the green stopper.

What should you do?

a. draw the green one next and hope that there is no carryover

b. draw several milliliters into a plain discard tube; then fill the green one

c. it is acceptable to draw the EDTA before the green stopper

d. skip the green tube and come back later to collect it.

b. draw several milliliters into a plain discard tube; then fill the green one

ALSO CALLED “RED BLOOD CELLS”

erythrocytes

LIQUID COMPONENT OF BLOOD

plasma

ALSO CALLED “WHITE BLOOD CELLS”

leukocytes

LIVES FOR APPROXIMATELY 4 MONTHS

erythrocytes

LIVES FOR 8-9 DAYS

platelets

A PART OF THE IMMUNE SYSTEM

leukocytes

CONSIDERED A “FRAGMENT” OF A CELL

platelets

DEFENDS THE BODY AGAINST DISEASE AND INFECTION

leukocytes

AID IN CLOTTING PROCESS

platelets

THE MOST ABUNDANT CELL IN THE BLOOD

erythrocytes

CONTAIN HEMOGLOBIN

erythrocytes

CAN INGEST DEAD CELLS AND TISSUE DEBRIS

leukocytes

CARRIES OXYGEN THROUGHOUT THE BODY

erythrocytes

WHEN CENTRIFUGED, SEPARATES TO THE TOP

plasma

ARE CONCAVE IN STRUCTURE

erythrocytes

PRODUCTION IS CONTROLLED BY THE HORMONE

“ERYTHROPOEITIN”

erythrocytes

PRODUCED WHEN MEGAKAROCYTES BREAK DOWN

platelets

LARGER THAN RED BLOOD CELLS

leukocytes

“STRAW COLORED”

plasma

TRANSPORTS CARBON DIOXIDE BACK TO THE LUNGS

erythrocytes

CATAGORIZED AS “GRANULOCYTES” OR

“AGRANULOCYTES”

leukocytes

PEOPLE WHO ARE ANEMIC ARE DEFICIENT IN THESE

erythrocytes

ALSO CALLED “THROMBOCYTES”

platelets

THE LARGEST COMPONENT OF BLOOD

plasma

What are the three skills used in phlebotomy when approaching a patient?

clear speaking (social)

respect and take care of your patient (administrative)

draw blood correctly (technical)

2\. List the information that is required on a test request form (requisition).

1. patients name
2. DOB or age
3. identification number
4. date and time sample
5. type of test to be collected
6. accessioning number
7. physicians name
8. location where work is done
9. ICD9 diagnosis codes
10. other specific sample info

List the five minimum identification requirements for a tube of blood.

1. tubes should be labelled after filling before leaving the patient
2. patients full name
3. identification number
4. collection date from person collecting sample and patient

The most commonly used vein in the antecubital area of a patient’s arm is the

median cubital

Why is the basilic vein used with caution?

the nerves are right underneath and arteries

12\. ASAP samples must be collected within ___________hours of an order being issued.

1 hour

Stat samples must be collected within __________hours of an order being issued

20 minutes

The recommended order of draw for blood is:

blood cultures (yellow)

serum tube (light blue)

heparin tube( red)

green

lavendar

grey