cytology Flashcards
diagnose etiology in
ear/skin infection, reproduction, fluid evaluation, benign or malignant masses
swabs used when
imprints, scrapings, and aspirates cannot be done
areas to swab
ears, fistulous tracts, vagial collection
how to take a swab sample
moisten sterile cotton or rayon swab with isotonic fluid (0.9% saline)
after swab collection
roll swab along flat surface do not rub and damage cells
ear cytology
ears may have excessive wax, pass through flame, excessive heat may damage cells
when to perform ear swab
clinical signs of otitis externa, head shaking, ear scratching, erythema, pain, foul odor, discharge
causes of otitis externa
primary, secondary, predisposing, and perpetuating
primary factors of ear infection
cause infections to healthy ears
secondary factors
opportunistic bacteria and yeast overgrowth (Malassezia pachydermatis)
predisposing factors
pendulous pinnae and stenotic ear canal, envioronment (moist, humid, frequent swimming)
perpetuating factors
continue the disease and include opportunist bacteria, yeast over growth, etc
swab ear before
any ear cleaner
materials for ear cytology
otoscope, cotton tip swabs, micro slide, mineral oil, stain, microscope
reporting ear cytology findings
bacteria: rods, cocci, clusters, pairs, chains, tetrads, and quantify (+1, +2, +3)
bacterial C&S ear swab supplies
gloves, sterile swabs, Dx lab form
materials for vaginal swab
cotton tipped swab, microslides, methanol or fixative spray, staining solution
objective of vaginal swab
obtain sample of epithelial cells from vagina and avoid vestibule
steps to perform vaginal swab
part lips and gently insert swab at steep angle, when swab is fully inserted, rotate 2-3 times to get cells, gently remove
staining vaginal swab
once slide is prepped, dip 5-10 in methanol to fix (Dif quik), after rinsing, slide is ready to examine
PISA
parabasal, intermediate, superficial, anuclear
parabasal cells
smallest epithelial cell, round shaped, high nuclear to cytoplasmic ratio, prevalent during diestrus or anestrus, absent during estrus
intermediate cells
wider in diameter, 2-3 times larger than parabasal, prominent nucleus, seen during all stages except estrus
superficial cells
largest cells in vaginal smears, polygonal shape and flat, nuclei are either absent or pyknotic, seen during estrus