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NAVEDTRA 14295B HOSPITAL CORPSMAN > CH 19 LAB > Flashcards

CH 19 LAB Flashcards

1
Q

Lab form?

A

SF 545

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2
Q

Listing of SF forms?

A

P-117

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3
Q

Alcohol pads contain what percent solution?

A

70% isopropyl alcohol

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4
Q

Best finger for stick?

A

Middle or ring (puncture perpendicular to grooves)

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5
Q

Length of lancet puncture depth?

A

No greater than 2mm

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6
Q

What is the preferred source of blood specimen obtained for clinical examination

A

venipuncture

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7
Q

When performing a finger puncture the first drop should be wiped away to avoid?

A

dilution of the specimen with tissue fluid

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8
Q

Tourniquet placement?

A

3–4 inches above the site

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9
Q

Venipuncture is what degree

A

15–30 with the bevel up

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10
Q

At what point in the venipuncture procedure should the tourniquet be removed

A

once blood flows freely into tubes

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11
Q

Max TQ time?

A

1 minute

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12
Q

When should specimens be labeled

A

Never before the sample is collected, but before leaving the patient

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13
Q

which color tube is the best choice for routine chem tests

A

RED TOP

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14
Q

Which color tube is the best choice for a CBC

A

lavender top

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15
Q

Additive in green top?

A

Heparin

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16
Q

The part of the microscope on which the prepared specimen is placed for examination is called the

A

Mechanical stage

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17
Q

What objective should be used for a detailed history of stained bacterial smears

A

oil immersion

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18
Q

Three objective lenses on microscope?

A

10x low power, 40x high power, 100x oil-immersion

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19
Q

Usual magnification of ocular lens?

A

10x (multipy this by the objective lens)

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20
Q

A CBC includes what five tests?

A

 Total red blood cell (RBC) count

 Hemoglobin determination (Hgb)

 Hematocrit calculation (Hct)

 Total white blood cell (WBC) count

 White Blood Cell Differential count

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21
Q

function of hemoglobin in the body

A

Transport oxygen to the tissues

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22
Q

Factors that affect the hgb values

A

age, sex , altitude

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23
Q

a low rbc count may indicate that the patient has what condition

A

anemia

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24
Q

Hemoglobin grams per 100 ml of blood in men/women?

A

MEN: 14–18 WOMAN: 12-16

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25
Q

Manual methods for determining blood hemoglobin?

A

Mixed with cyanomethoglobin and turns brownish color

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26
Q

What is the term for the volume of erythrocytes expressed as a percentage of the volume of whole blood in a sample

A

hematocrit

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27
Q

Hematocrit values?

A

FEMALE: 37–47 MALE: 42-52 PERCENT

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28
Q

Normal WBC count?

A

4,800-10,800 cells per cubic millimeter

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29
Q

Select the term used to describe an abnormally high WBC count

A

Leukocytosis

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30
Q

List conditions that may cause leukopenia

A

radiation, Psittacosis, anaphylactic shock, viral infections

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31
Q

Which study wihtin a CBC often provides the most helpful information in determining the severity and type of inection

A

WBC differential

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32
Q

Five types of white cells circulating in blood?

A

Neutrophil, Eosinophil, Basophil, Lymphocyte, Monocyte

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33
Q

What is the function of leukocytosis

A

To control various disease conditions

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34
Q

The study of the form and structure of organisms?

A

Morphology

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35
Q

Compromises the largest percentages of leukocytes found in the normal blood sample?

A

Neutrophil

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36
Q

Which leukocyte functions by ingesting bacteria

A

Neutrophil

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37
Q

Which leukocyte helps respond to parasitic infections and allergic reactions?

A

eosinophil

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38
Q

When performing a WBC differential, which cell has the large, scattered dark blue granules that are darker than the nucleus

A

basophils

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39
Q

Rise in basophil indicates?

A

Inflammatory disorders and certain leukemias

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40
Q

Which leukocyte fights viral infection

A

lymphocyte

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41
Q

HALO around this clear sky blue cytoplasm?

A

Lymphocyte

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42
Q

what is the term for bacteria that causes disease

A

pathogen

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43
Q

Bluish-gray cytoplasm and largest of white blood cells?

A

Monocyte

44
Q

Disease-producing ability of bacteria is referred to as either?

A

Pathogenic and nonpathogenic

45
Q

Four growth requirements for bacteria?

A

Temp, Oxygen, Nutrition, Moisture

46
Q

What is the term used to define bacteria that are round in shape

A

cocci

47
Q

Rod-shaped?

A

Bacillus

48
Q

Spiral shaped?

A

Spirochetes

49
Q

Gram positive stain what color

A

deep purple or blue

50
Q

Which bacteria causes strep throat

A

streptococcus pyogenes

51
Q

which bacteria casues gonorrhea

A

neisseria gonorrhoae

52
Q

which bacteria causes tetanus

A

Clostridium tetani

53
Q

Blue cock passes?

A

Strep and staph

54
Q

Pink cock passes?

A

Gonorrhea and meningitis

55
Q

Blue bats pass?

A

Diptheria
Gas gangrene
Tetanus
Botulism

56
Q

Pink bats pass?

A

Bubonic plague
Brucellosis
Whooping Cough

57
Q

Bacteria that causes bubonic plague?

A

Yersinia pestis

58
Q

Bacteria that causes Burucellosis?

A

Brucella abortus

59
Q

Foreign to the body, and causes a detectable reaction

A

antigen

60
Q

the RPR is a NON-SPECIFIC test to diagnose syphilis

A

TRUE

61
Q

Positive RPR?

A

Black clumps against white background (nonreactive is light gray)

62
Q

Monospot tests for?

A

Mononucleosis

63
Q

Positive monospot test?

A

Agglutination (clumping)

64
Q

Seen in clustered round buds with thick walls?

A

Fungi

65
Q

Simple method to detect fungi

A

potassium hydroxide (KOH) - add 1 drop of 10 percent KOH to slide

66
Q

best urine specimen for screening is

A

first morning void

67
Q

Fungi on skin or nails appear?

A

Refractile or reflective

68
Q

Fungi on hair appears?

A

Dense clouds around hair stubs

69
Q

What is the desired urine amount for testing

A

at least 12ml (10-15 for children)

70
Q

what urine color is most related with the presence of bile

A

yellow or brown

71
Q

which urine color is most related with a patient being treated Pyridium

A

dark orange

72
Q

a report on urnie clarity is valid regardless of standing time

A

FALSE

73
Q

The specific gravity of of a liquid is the weight of the substance as compared to an equal volume of

A

distilled water

74
Q

normal spec grav of urine is what

A

1.015 – 1.030

75
Q

the addition of one drop of 2 percent acetic acid to urine sediment will disintegrate which cell

A

red blood cells

76
Q

Causes dark orange urine?

A

Pyridium

77
Q

Urine appearance may be reported as?

A 
Clear
hazy
slightly cloudy
cloudy
turbid
78
Q

What cell is not normally found in urine

A

red blood cells

79
Q

What critical result is indicative of uncontrolled diabetes

A

both glucose and ketones present in urine

80
Q

What operational program may be used on some operational platforms to treat critical patients in mass casualty situation when delay of blood products would cause a critical delay

A

WBB (Waling blood bank)

81
Q

What are the two primary methods of collecting blood

A

capillary and venipuncture

82
Q

Capillary is used on

A

pediatric, severely burned or ICU to which venipuncture is not a good idea

83
Q

Do not draw blood from with an IV in it or on the same side of a mastectomy what should you do

A

go to another site or arm

84
Q

condenser of the microscope

A

compact lense system, located below the stage. concentrates and focuses light source on the specimen

85
Q

internal light source of microscope

A

on base of the microscope providing a precise and steady source of light into the microscope

86
Q

iris diaphram

A

located on the condenser to control amount of light and the angle of the light

87
Q

what usually causes leukocytosis

A

systemic or localized infecion

88
Q

toxin

A

generally they are waste products of metabolism in a bacterial cell.

89
Q

endotoxin

A

comprises the bacterial cell wall and is released as the bacteria is destroyed, may affect the patient during course of anitbiotic therapy

90
Q

exotoxin

A

produced by bacteria and found OUTSIDE of the bacteria cell in the surrounding medium. highly poisonous associated with septic shock

91
Q

Psychrophillic

A

cold loving reporduce best at low temps 4C

92
Q

mesophilic

A

reproduce best at body body temp 35C

93
Q

thermophillic

A

reproduce best at high temp 42C

94
Q

Normal urine output for adults

A

600 to 2,000 ml averaging about 1500 ml

95
Q

yellow or brown urine ( turnning green when shaken)

A

caused by presence of bile

96
Q

wbc acute infection count

A

above 50,000

97
Q

what hgb concentration indicates anemia

A

below 7

98
Q

Specific gravity in the morning will be?

A

Higher

99
Q

Specific gravity is measured using?

A

A refractometer

100
Q

Urine reagent strips may take up to how long?

A

2 min

101
Q

Use what microscope magnification to examine urine sample?

A

40X

102
Q

What may indicate disease in urinary tract?

A

More than 3 WBC on high-power field

103
Q

Red cells appear how?

A

Perfectly rounded

104
Q

One drop of 2 percent acetic acid added to urine sediment disintegrates what?

A

RBC

105
Q

Casts in the urine indicate?

A

Kidney disorder - urine will be positive for albumin

106
Q

Reagent strip positive for glucose and ketones may indicate?

A

Diabetes

107
Q

Casts in urine indicate?

A

Albumin

NAVEDTRA 14295B HOSPITAL CORPSMAN (17 decks)

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