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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
Manual methods for determining blood hemoglobin?
Mixed with cyanomethoglobin and turns brownish color
26
What is the term for the volume of erythrocytes expressed as a percentage of the volume of whole blood in a sample
hematocrit
27
Hematocrit values?
FEMALE: 37–47 MALE: 42-52 PERCENT
28
Normal WBC count?
4,800-10,800 cells per cubic millimeter
29
Select the term used to describe an abnormally high WBC count
Leukocytosis
30
List conditions that may cause leukopenia
radiation, Psittacosis, anaphylactic shock, viral infections
31
Which study wihtin a CBC often provides the most helpful information in determining the severity and type of inection
WBC differential
32
Five types of white cells circulating in blood?
Neutrophil, Eosinophil, Basophil, Lymphocyte, Monocyte
33
What is the function of leukocytosis
To control various disease conditions
34
The study of the form and structure of organisms?
Morphology
35
Compromises the largest percentages of leukocytes found in the normal blood sample?
Neutrophil
36
Which leukocyte functions by ingesting bacteria
Neutrophil
37
Which leukocyte helps respond to parasitic infections and allergic reactions?
eosinophil
38
When performing a WBC differential, which cell has the large, scattered dark blue granules that are darker than the nucleus
basophils
39
Rise in basophil indicates?
Inflammatory disorders and certain leukemias
40
Which leukocyte fights viral infection
lymphocyte
41
HALO around this clear sky blue cytoplasm?
Lymphocyte
42
what is the term for bacteria that causes disease
pathogen
43
Bluish-gray cytoplasm and largest of white blood cells?
Monocyte
44
Disease-producing ability of bacteria is referred to as either?
Pathogenic and nonpathogenic
45
Four growth requirements for bacteria?
Temp, Oxygen, Nutrition, Moisture
46
What is the term used to define bacteria that are round in shape
cocci
47
Rod-shaped?
Bacillus
48
Spiral shaped?
Spirochetes
49
Gram positive stain what color
deep purple or blue
50
Which bacteria causes strep throat
streptococcus pyogenes
51
which bacteria casues gonorrhea
neisseria gonorrhoae
52
which bacteria causes tetanus
Clostridium tetani
53
Blue cock passes?
Strep and staph
54
Pink cock passes?
Gonorrhea and meningitis
55
Blue bats pass?
Diptheria Gas gangrene Tetanus Botulism
56
Pink bats pass?
Bubonic plague Brucellosis Whooping Cough
57
Bacteria that causes bubonic plague?
Yersinia pestis
58
Bacteria that causes Burucellosis?
Brucella abortus
59
Foreign to the body, and causes a detectable reaction
antigen
60
the RPR is a NON-SPECIFIC test to diagnose syphilis
TRUE
61
Positive RPR?
Black clumps against white background (nonreactive is light gray)
62
Monospot tests for?
Mononucleosis
63
Positive monospot test?
Agglutination (clumping)
64
Seen in clustered round buds with thick walls?
Fungi
65
Simple method to detect fungi
potassium hydroxide (KOH) - add 1 drop of 10 percent KOH to slide
66
best urine specimen for screening is
first morning void
67
Fungi on skin or nails appear?
Refractile or reflective
68
Fungi on hair appears?
Dense clouds around hair stubs
69
What is the desired urine amount for testing
at least 12ml (10-15 for children)
70
what urine color is most related with the presence of bile
yellow or brown
71
which urine color is most related with a patient being treated Pyridium
dark orange
72
a report on urnie clarity is valid regardless of standing time
FALSE
73
The specific gravity of of a liquid is the weight of the substance as compared to an equal volume of
distilled water
74
normal spec grav of urine is what
1.015 – 1.030
75
the addition of one drop of 2 percent acetic acid to urine sediment will disintegrate which cell
red blood cells
76
Causes dark orange urine?
Pyridium
77
Urine appearance may be reported as?
``` Clear hazy slightly cloudy cloudy turbid ```
78
What cell is not normally found in urine
red blood cells
79
What critical result is indicative of uncontrolled diabetes
both glucose and ketones present in urine
80
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
WBB (Waling blood bank)
81
What are the two primary methods of collecting blood
capillary and venipuncture
82
Capillary is used on
pediatric, severely burned or ICU to which venipuncture is not a good idea
83
Do not draw blood from with an IV in it or on the same side of a mastectomy what should you do
go to another site or arm
84
condenser of the microscope
compact lense system, located below the stage. concentrates and focuses light source on the specimen
85
internal light source of microscope
on base of the microscope providing a precise and steady source of light into the microscope
86
iris diaphram
located on the condenser to control amount of light and the angle of the light
87
what usually causes leukocytosis
systemic or localized infecion
88
toxin
generally they are waste products of metabolism in a bacterial cell.
89
endotoxin
comprises the bacterial cell wall and is released as the bacteria is destroyed, may affect the patient during course of anitbiotic therapy
90
exotoxin
produced by bacteria and found OUTSIDE of the bacteria cell in the surrounding medium. highly poisonous associated with septic shock
91
Psychrophillic
cold loving reporduce best at low temps 4C
92
mesophilic
reproduce best at body body temp 35C
93
thermophillic
reproduce best at high temp 42C
94
Normal urine output for adults
600 to 2,000 ml averaging about 1500 ml
95
yellow or brown urine ( turnning green when shaken)
caused by presence of bile
96
wbc acute infection count
above 50,000
97
what hgb concentration indicates anemia
below 7
98
Specific gravity in the morning will be?
Higher
99
Specific gravity is measured using?
A refractometer
100
Urine reagent strips may take up to how long?
2 min
101
Use what microscope magnification to examine urine sample?
40X
102
What may indicate disease in urinary tract?
More than 3 WBC on high-power field
103
Red cells appear how?
Perfectly rounded
104
One drop of 2 percent acetic acid added to urine sediment disintegrates what?
RBC
105
Casts in the urine indicate?
Kidney disorder - urine will be positive for albumin
106
Reagent strip positive for glucose and ketones may indicate?
Diabetes
107
Casts in urine indicate?
Albumin

NAVEDTRA 14295B HOSPITAL CORPSMAN (17 decks)

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