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XT NOTES > MXT 2 EXAM 3 > Flashcards

MXT 2 EXAM 3 Flashcards

1
Q

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

A

polycythemia

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2
Q

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

A

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

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3
Q

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

A

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

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4
Q

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

A

label each blood tube with one unique patient identifier

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5
Q

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

A

polycythemia

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6
Q

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

A

lavender- stoppered tube

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7
Q

an evacuated tube with a lavender stopper contains

A

EDTA

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8
Q

an evacuated tube with a red stopper contains

A

nothing

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9
Q

an increase in hemoglobin level occurs with

A

all are correct

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10
Q

an individual who collects blood specimens is known as a

A

phlebotomist

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11
Q

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

A

immediately remove the tourniquet and the needle

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12
Q

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

A

anemia

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13
Q

hemolysis of a blood specimen results in

A

inaccurate test results

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14
Q

how is serum obtained?

A

from clotted blood that has been centrifuged

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15
Q

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

A

every 2 to 4 weeks

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16
Q

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

A

interfere with adequate serum collection

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17
Q

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

A

use the butterfly method to perform the venipuncture

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18
Q

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

A

increased

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19
Q

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

A

within the reference range

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20
Q

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

A

within the reference range

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21
Q

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

A

above the reference range

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22
Q

On Palpation, a scarred vein feels

A

stiff and hard

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23
Q

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

A

plasma, buffy coat, and blood cells

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24
Q

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

A

serum and blood cells

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25
Q

phlebotomy includes which of the following?

A

all are correct

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26
Q

the buffy coat consists of

A

white blood cells and platelets

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27
Q

the purpose of applying a tourniquet when performing venipuncture is to

A

make the patients veins more visible and easier to palpate

28
Q

the red blood cells indices include all of the following except

A

RBC

29
Q

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

A

above normal

30
Q

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

A

amount of specimen required for the test

31
Q

the term hematocrit means

A

to separate blood

32
Q

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

A

lavender

33
Q

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

A

light blue

34
Q

what is the function of warfarin?

A

to inhibit the formation of blood clots

35
Q

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

A

0.8 to 1.2

36
Q

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

A

penetration of the bone

37
Q

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

A

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

38
Q

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

A

the tube may no longer have a vacuum

39
Q

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

A

semi-fowler

40
Q

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

A

keeping the patient’s arm in a downward position

41
Q

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?

A

laboratory directory or website

42
Q

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

A

diluting the blood sample with tissue fluid

43
Q

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

A

recapping the needle after performing a venipuncture

44
Q

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

A

top of the red cell column

45
Q

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

A

median cubital vein

46
Q

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

A

all asre correct

47
Q

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

A

21G

48
Q

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

A

red, green, lavender, gray

49
Q

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

A

winged infusion method

50
Q

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

A

all are correct

51
Q

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

A

ask the patient to state his or her name or DOB

52
Q

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

A

all are correct

53
Q

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

A

removing the needle before removing the tourniquet

54
Q

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

A

using the thumb to palpate the vein

55
Q

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

A

shaking the tube containing an anticoagulant after drawing it

56
Q

which of the following results in leukocytosis?

A

all are correct

57
Q

which of the following results in leukopenia?

A

chemotherapy

58
Q

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

A

moving the needle after it has been inserted into the vein

59
Q

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

A

gently invert the tube five times after drawing it

60
Q

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

A

all are correct

61
Q

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

A

lateral part of the tip of the third finger

62
Q

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

A

applying firm pressure below and to the side of the vein

63
Q

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

A

prothrombin time

64
Q

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

A

small veins

65
Q

whole blood is obtained by

A

using a tube containing an anticoagulant

66
Q

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

A

all are correct

67
Q

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

A

protect patient from injury r

XT NOTES (24 decks)

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