MXT 2 EXAM 3

Question 1

A low hemoglobin reading may occur with all of the following except

Answer 1

polycythemia

Question 2

after drawing a blood specimen for an electrolyte profile, the next step is to

Answer 2

allow the blood specimen to stand in an upright position for 30 to 45 minutes

Question 3

all of the following are correct techniques for applying a tourniquet except

Answer 3

leaving the tourniquet on for at least 3 minutes before drawing the specimen

Question 4

all of the following are guidelines tghat should be followed when assembling equipment and supplies for a venipuncture except

Answer 4

label each blood tube with one unique patient identifier

Question 5

all of the following can result in decrease in the red blood cells count except

Answer 5

polycythemia

Question 6

all of the following tubes can be used to collect serum except

Answer 6

lavender- stoppered tube

Question 7

an evacuated tube with a lavender stopper contains

Answer 7

EDTA

Question 8

an evacuated tube with a red stopper contains

Answer 8

nothing

Question 9

an increase in hemoglobin level occurs with

Answer 9

all are correct

Question 10

an individual who collects blood specimens is known as a

Answer 10

phlebotomist

Question 11

during the venipuncture procedure, a sudden swelling occurs in the area around the puncture site, you should

Answer 11

immediately remove the tourniquet and the needle

Question 12

hematocrit is used as a screening measure for the early detection of

Answer 12

anemia

Question 13

hemolysis of a blood specimen results in

Answer 13

inaccurate test results

Question 14

how is serum obtained?

Answer 14

from clotted blood that has been centrifuged

Question 15

how often should a patient on warfarin therapy have a PT/INR test performed?

Answer 15

every 2 to 4 weeks

Question 16

if a fibrin clot forms in the serum layer of a blood specimen, it will

Answer 16

interfere with adequate serum collection

Question 17

if you think a vein selected for venipuncture may collapse, you should

Answer 17

use the butterfly method to perform the venipuncture

Question 18

Mr. Johnson has a hematocrit reading of 60. This is considered to be

Answer 18

increased

Question 19

Mr. Peterson has a hemoglobin reading of 16. This is considered to be

Answer 19

within the reference range

Question 20

Mr. Stoney has a white blood cell count of 8,000. This is considered

Answer 20

within the reference range

Question 21

Mrs. Nelson has a white blood cell count of 14,500. This is considered

Answer 21

above the reference range

Question 22

On Palpation, a scarred vein feels

Answer 22

stiff and hard

Question 23

on standing, a blood specimen to which an anticoagulant has been added separates into

Answer 23

plasma, buffy coat, and blood cells

Question 24

on standing, a blood specimen to which an anticoagulant has NOT been added separates into

Answer 24

serum and blood cells

Question 25

phlebotomy includes which of the following?

Answer 25

all are correct

Question 26

the buffy coat consists of

Answer 26

white blood cells and platelets

Question 27

the purpose of applying a tourniquet when performing venipuncture is to

Answer 27

make the patients veins more visible and easier to palpate

Question 28

the red blood cells indices include all of the following except

Answer 28

RBC

Question 29

the results of a differential white blood cell count indicate that there are 80 neutrophils. This is considered

Answer 29

above normal

Question 30

the size of the evacuated tube you choose to obtain a venous blood specimen depends on the

Answer 30

amount of specimen required for the test

Question 31

the term hematocrit means

Answer 31

to separate blood

Question 32

what color stopper tube is used to collect a blood specimen for a complete blood cell count(CBC)?

Answer 32

lavender

Question 33

what color stopper tube is used to collect blood specimen for a prothrombin time test?

Answer 33

light blue

Question 34

what is the function of warfarin?

Answer 34

to inhibit the formation of blood clots

Question 35

what is the PT/INR result of a healthy individual with a normal clotting ability?

Answer 35

0.8 to 1.2

Question 36

what may occur if a finger puncture is made that is deeper than 3.1 mm?

Answer 36

penetration of the bone

Question 37

what may occur if the angle of less than 15 degrees is used to perform the venipuncture?

Answer 37

the needle may enter the skin above the vein and not puncture it

Question 38

what may occur if an outdated evacuated tube is used to collect the blood specimen?

Answer 38

the tube may no longer have a vacuum

Question 39

what position should be used for a venipuncture if a patient appears nervous or has fainted in the past from a venipuncture?

Answer 39

semi-fowler

Question 40

when collecting a blood specimen using the vacuum tube method of venipuncture, venous reflux is prevented by

Answer 40

keeping the patient's arm in a downward position

Question 41

when collecting a venous blood specimen to be transported to an outside laboratory for testing, which of the following should be consulted for information on collecting and handling requirements?

Answer 41

laboratory directory or website

Question 42

when performing a capillary puncture, the finger should not be squeezed to avoid

Answer 42

diluting the blood sample with tissue fluid

Question 43

when performing a venipuncture, which of the following techniques represents a violation of the OSHA standard?

Answer 43

recapping the needle after performing a venipuncture

Question 44

when using a microhematocrit centrifuge, the hematocrit test results should be read at the

Answer 44

top of the red cell column

Question 45

which of the following antecubital veins is considered the best vein to use for a venipuncture?

Answer 45

median cubital vein

Question 46

which of the following are characteristics of the brachial artery( located in the antecubital space)?

Answer 46

all asre correct

Question 47

which of the following gauge needles is used most often to perform a routine venipuncture using the vacuum tube method?

Answer 47

21G

Question 48

which of the following indicates the correct order of draw for the vacuum tube method of venipuncture?

Answer 48

red, green, lavender, gray

Question 49

which of the following is another name for the butterfly method of venipuncture?

Answer 49

winged infusion method

Question 50

which of the following is found in the serum of blood?

Answer 50

all are correct

Question 51

which of the following is the proper method for identifying a patient before performing a venipuncture?

Answer 51

ask the patient to state his or her name or DOB

Question 52

which of the following may occure if the tourniquet is applied too tightly

Answer 52

all are correct

Question 53

which of the following may result in hemolysis of the blood specimen?

Answer 53

removing the needle before removing the tourniquet

Question 54

which of the following represents an error in technique when selecting a vein for venipuncture

Answer 54

using the thumb to palpate the vein

Question 55

which of the following represents an error in technique when working with evacuated tubes?

Answer 55

shaking the tube containing an anticoagulant after drawing it

Question 56

which of the following results in leukocytosis?

Answer 56

all are correct

Question 57

which of the following results in leukopenia?

Answer 57

chemotherapy

Question 58

which of the following results in patient discomfort during the venipuncture procedure?

Answer 58

moving the needle after it has been inserted into the vein

Question 59

which of the following should be performed if an evacuated tube contains a clot activator?

Answer 59

gently invert the tube five times after drawing it

Question 60

which of the following should not be used as a venipuncture site?

Answer 60

all are correct

Question 61

which of the following sites can be used to make a skin puncture on an adult?

Answer 61

lateral part of the tip of the third finger

Question 62

which of the following techniques can be used to prevent a vein from rolling?

Answer 62

applying firm pressure below and to the side of the vein

Question 63

which of the following tests is not included in a CBC?

Answer 63

prothrombin time

Question 64

which of the following is most likely to collapse when performing a venipuncture?

Answer 64

small veins

Question 65

whole blood is obtained by

Answer 65

using a tube containing an anticoagulant

Question 66

why should the veins of the hands be used as a venipuncture site only as a last resort?

Answer 66

all are correct

Question 67

you are performing a venipuncture and the patient becomes dizzy and is about to faint. Your first priority in this situation should be to

Answer 67

protect patient from injury r