Capillary Puncture Exam (Sem 1 Final) Flashcards

1
Q

Venipuncture

A

method of blood collection from a vein

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2
Q

Veins

A

blood vessels with valves that carry blood toward the heart

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3
Q

How many layers are veins?

A

3 layers

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4
Q

Arteries

A

Blood vessels w/ a pulse that carry blood away from the heart

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5
Q

how many layers are arteries?

A

3 layers

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6
Q

Capillaries

A

network of microscopic blood vessels connecting arterioles and venules that contain a mixture of arterial and venous blood

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7
Q

Requisition

A

Generated by a physician/provider’s order

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8
Q

Ways to verify a patient before performing capillary puncture/venipuncture

A

full name & DOB

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9
Q

Most critical error a phlebotomist could make before collecting a blood specimen

A

the misidentification of a patient

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10
Q

Positions for patients when performing blood collection methods

A

semi-reclining position

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11
Q

Interstitial Fluid

A

all the fluid except blood that is found in the same space between tissues

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12
Q

interstitial fluid is what color?

A

Clear

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13
Q

What is another name for interstitial fluid?

A

Tissue Fluid

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14
Q

Lancet

A

Capillary puncture devices

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15
Q

3 characteristics of Lancets…

A

sterile, disposable, retractable

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16
Q

lancets are __________?

A

color coded

17
Q

what is the depth of a heel stick for an infant?

A

never exceeding 2mm

18
Q

what is the depth of a finger stick for an adult?

19
Q

Types of capillary puncture collection containers

A

microtainers, capillary tube

20
Q

point of care testing…

A

direct contact patient setting

21
Q

microcollection

A

collecting a small amount of blood by capillary puncture of the heel/finger

22
Q

capillary action

A

process by which blood flows freely into a capillary tube in microcollection procedures

23
Q

osteomyelitis means what?

A

bone inflammation

24
Q

what causes osteomyelitis?

A

bacterial infection

25
cyanotic
condition in which the skin/mucous membranes are blue
26
what causes cyanosis?
oxygen deficiency
27
methods to increase blood flow to capillary puncture sites
- heat pack - massage - warm towel
28
what is the time frame for blood collection for newborn screening?
between 24&72 hours after birth
29
what setting is the blood collection generally performed at for newborn screening?
hospital nursery
30
what setting is the blood collection generally performed at for newborn screening?
hospital nursery
31
When should capillary puncture not be used?
- If testing requires a large amount of blood - patient has poor peripheral circulation in the hands and feet - Interstitial fluid from edema could dilute the test causing inaccurate results
32
What if blood flow stops during collection of a capillary blood specimen?
the entire procedure should be repeated at a new site with a new sterile puncture device
33
What if blood flow stops during collection of a capillary blood specimen?
the entire procedure should be repeated at a new site with a new sterile puncture device
34
What conditions are tested for in newborn screening?
- phenylketonuria (PKU) | - hypothyroidism
35
Why are conditions screened in newborns?
looking for a newborn that lacks certain enzymes, proteins, or hormones needed for certain metabolic reactions
36
What could happen if the conditions weren't screened?
abnormalities as severe as mental retardation could develop