RLG Flashcards

(42 cards)

1
Q

The most widely employed
technique for the detection of
parasites in the gastrointestinal
tract.

A

fecalysis

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2
Q

fecal score: majority is formed but has poor consistency and viscous

A

G4

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3
Q

fecal score: moist, leaves definite mark

A

G3

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4
Q

fecal score: bullet like, crumbly

A

G1

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5
Q

fecal score: does not hold form, and spreads lightly

A

1/3 -soft

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6
Q

Factors that may affect fecal examination

A
  1. Amount of feces examined
  2. Age of the sample
  3. Sample handling (including
    collection, storage, and transport)
  4. Examination method
  5. Skill of the diagnostician
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7
Q

If the fecal material cannot be
examined immediately, preserve it in:

A

5-10% formalin
refrigerate 3-5C

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8
Q

qualitative fecal exa methods

A
  • Direct/ simple smear
  • Flotation
  • Sedimentation
  • Larval recovery
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9
Q

quantitative fecal exam methods

A
  • Stoll-ova counting technique
  • McMaster egg-counting
    technique
  • Beaver’s direct egg-counting
    technique
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10
Q

Useful also for pseudotapeworms,
acanthocephalan eggs, lungworm
and Strongyloides larva, amoeba,
and ciliates.

A

sedimentation

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11
Q

Useful for isolation and
identification of ovoviviparus
nematodes and strongyles.

A

larval recovery

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12
Q

types of fecal flotation

A

passive and centrifugation
flotation

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13
Q

quantitative methods can reflect parasite burden and degree of infection

A

F

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14
Q

used for dx of abomasal or stomach damage due to trichostrongyles

A

plasma pepsinogen test

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15
Q

vector borne pathogens of cattle

A

babesia
theileria
elaeophora
setaria
trypanosoma
anaplasma

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16
Q

Techniques for the detection of vector-borne
pathogens

A
  • Blood smear examination
  • Serological assays
  • Molecular assays
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17
Q

thin smears are more
concentrated and offer higher
sensitivity than thick smear,

18
Q

is more useful when looking
for Babesia.

A

capillary blood sample

19
Q

where to get capillary blood sample

20
Q

more preferred staining for examination of
protozoan parasites and rickettsiae.

A

Romanowsky stains, such as
Wright stain and Giemsa stain,

21
Q

stain used in knott’s conc method

A

methylene blue

22
Q

Highly motile, swimming
through the blood, No sheath; Body curved
with hooked posterior end

A

Acanthocheilonema spp.

23
Q

Motile but stays in place, no sheath, body curved along whole length

24
Q

Sheathed; Tail is tapered
and with cephalic space.

25
PCR phases
Denaturation annealing extension
26
PCR is repeated for ___ cycles
30-35
27
is critical for thesuccess of PCR.
Primer design
28
Determines the specificity of PCR.
primer
29
Normally, primers are composed of __ bp.
18-30
30
Amplification proceeds through repetition of two types of elongation reactions that occur via the ____
loop regions
31
LAMP utilizes ___ primers
4-6
32
Compared to PCR, it is simpler, more rapid, and less sophisticated.
LAMP
33
meaning of LAMP
loop-mediated isothermal amplification
34
meaning of CFI
color fluorescent indicator
35
combi dyes of CFI
hydroxynaphthol blue gel green
36
LAMP Color change is visible by the naked eye.
true
37
LAMP fluorescence is confirmed in real time by through the machine (___).
FAM filter
38
Low sensitivity in low level of infection * Identification to species level is often challenging
microscopic exam
39
* High sensitivity and specificity * Multiplex PCR can detect coinfection in a single run
molecular technique
40
Readily accessible * Can identify presence of coinfection
microscopic exam
41
* Not readily available * Expensive * PCR may take hours * False negative cases
molecular exam
42