cytology Flashcards

1
Q

diagnose etiology in

A

ear/skin infection, reproduction, fluid evaluation, benign or malignant masses

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2
Q

swabs used when

A

imprints, scrapings, and aspirates cannot be done

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3
Q

areas to swab

A

ears, fistulous tracts, vagial collection

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4
Q

how to take a swab sample

A

moisten sterile cotton or rayon swab with isotonic fluid (0.9% saline)

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5
Q

after swab collection

A

roll swab along flat surface do not rub and damage cells

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6
Q

ear cytology

A

ears may have excessive wax, pass through flame, excessive heat may damage cells

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7
Q

when to perform ear swab

A

clinical signs of otitis externa, head shaking, ear scratching, erythema, pain, foul odor, discharge

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8
Q

causes of otitis externa

A

primary, secondary, predisposing, and perpetuating

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9
Q

primary factors of ear infection

A

cause infections to healthy ears

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10
Q

secondary factors

A

opportunistic bacteria and yeast overgrowth (Malassezia pachydermatis)

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11
Q

predisposing factors

A

pendulous pinnae and stenotic ear canal, envioronment (moist, humid, frequent swimming)

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12
Q

perpetuating factors

A

continue the disease and include opportunist bacteria, yeast over growth, etc

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13
Q

swab ear before

A

any ear cleaner

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14
Q

materials for ear cytology

A

otoscope, cotton tip swabs, micro slide, mineral oil, stain, microscope

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15
Q

reporting ear cytology findings

A

bacteria: rods, cocci, clusters, pairs, chains, tetrads, and quantify (+1, +2, +3)

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16
Q

bacterial C&S ear swab supplies

A

gloves, sterile swabs, Dx lab form

17
Q

materials for vaginal swab

A

cotton tipped swab, microslides, methanol or fixative spray, staining solution

18
Q

objective of vaginal swab

A

obtain sample of epithelial cells from vagina and avoid vestibule

19
Q

steps to perform vaginal swab

A

part lips and gently insert swab at steep angle, when swab is fully inserted, rotate 2-3 times to get cells, gently remove

20
Q

staining vaginal swab

A

once slide is prepped, dip 5-10 in methanol to fix (Dif quik), after rinsing, slide is ready to examine

21
Q

PISA

A

parabasal, intermediate, superficial, anuclear

22
Q

parabasal cells

A

smallest epithelial cell, round shaped, high nuclear to cytoplasmic ratio, prevalent during diestrus or anestrus, absent during estrus

23
Q

intermediate cells

A

wider in diameter, 2-3 times larger than parabasal, prominent nucleus, seen during all stages except estrus

24
Q

superficial cells

A

largest cells in vaginal smears, polygonal shape and flat, nuclei are either absent or pyknotic, seen during estrus

25
Q

erythrocytes

A

observed in large numbers during proestrus, early diestrus

26
Q

neutrophils

A

abundant in smears during diestrus

27
Q

foam cells

A

nondescript epithelial cells containing vacuoles during anestrus