CH. 40: PHLEBOTOMY Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

why collect blood?

A

phlebotomy used to determine disease and treatment

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

what is the MA’s role in phlebotomy?

A

to collect blood as efficiently as possible for accurate and reliable test results, provide high-quality care, and to perform task critical to patient diagnosis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

where does the blood form?

A

forms in bodies organs and bone marrow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

what is the purpose of blood?

A

blood carries oxygen and nutrients to cells and removes waste products and carbon dioxide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

veins

A

usually carry deoxygenated blood, containing carbon dioxide and other cellular waste

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

what type of walls do veins have?

A

thin-walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

do veins have a pulse?

A

no

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

capillaries

A

connect most arteries and veins

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

arteries

A

usually carry oxygenated blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

what type of walls do arteries have?

A

thick walls

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

do arteries have a pulse?

A

yes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

how much blood does the body contain?

A

6 liters of blood

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

what is the percentage of formed elements that is found in the blood?

A

45%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

erythrocytes

A

red blood cells: oxygen carrying cell in our body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

leukocytes

A

white blood cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

what is the liquid part of the blood called?

A

plasma

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

what is a centrifuge?

A

a machine that separates serum of blood

18
Q

what is an anticoagulant?

A

it prevents blood from clotting to produce plasma specimen

19
Q

what does clotting covert into?

A

fibrinogen

20
Q

what does fibrinogen convert into?

A

fibrin

21
Q

how can you obtain a blood sample?

A

antecubital area, medial cubital area, superficial veins in hand, veins in wrist, veins in feet or legs, and arteries of arms

22
Q

are safety needles required?

A

yes

23
Q

what are the purpose of safety needles?

A

protects patients and health care worker from the job needle stick

24
Q

what is the most common size for a needle gauge?

A

20,21, & 22

25
Q

how are additives, anticoagulants, and gels identified?

A

by the color of the stopper on the tube

26
Q

Different test require what?

A

different types of blood specimens

27
Q

what are the additives, anticoagulants, and gels designed to do?

A

all are designed to preserve blood; other additive improve quality of specimen

28
Q

what is the purpose of a specimen collection tray?

A

to hold all necessary equipment

29
Q

what kind of skills do you need to approach a patient?

A

social skills, technical skills and administrative skills

30
Q

how do you prepare a venipuncture?

A

put patient at ease

31
Q

before you do and punctures, what must you do?

A

ask patient to state full name, check wristband if applicable, label sample tubes before leaving examination room, and check paper work against tubes

32
Q

what is the order of preferred sites for venipuncture?

A

antecubital, back of hand, wrist (difficult), and ankle/foot (needs a doctor’s written approval only)

33
Q

for perform a safe venipuncture, you must do what?

A

palpate vein with tip of finger

34
Q

what happens when you don’t wipe off the alcohol from the site?

A

a wet site will cause hemolysis

35
Q

butterfly collection system

A

combines benefits of syringe and vacuum methods

36
Q

with unsuccessful venipuncture, you should:

A

try another tube, advance further into vein, and pull back a little

37
Q

what factors could affect laboratory results?

A

incorrect specimen handling/storage, patient factors (not fasting), and drawing procedure incorrect (alcohol in specimen, tourniquet on too long, and wrong tube)

38
Q

what is a capillary puncture?

A

method of obtaining one to several drops of blood

39
Q

what kind of tests are obtained by capillary punctures?

A

CBC, RBC, and WBC; hemoglobin and hematocrit; glocose testing; phenylketonuria testing

40
Q

where is the most common capillary sites for adults?

A

finger tips

41
Q

where is the most common capillary sites for infants?

A

the heel