bacteria exam 4

Question 1

what are the defense mechanisms of the skin

Answer 1

physical parameters, hair, SC, desquamation, secretions, resident microflora

Question 2

what are the most common transient bacti of the skin

Answer 2

s. pseud, s. aureus, E. coli, p. aeruginosa

Question 3

90% of canine pyoderma cases involve

Answer 3

S. pseudintermedius

Question 4

3 types of surface pyoderma

Answer 4

pyotraumatic dermatitis, interigo, mucocutaneous pyoderma

Question 5

2 types of superficial pyoderma

Answer 5

impetigo and superficial bacterial follicultits

Question 6

in deep pyoderma what are the common secondary infections

Answer 6

e. coli, proteus, p. aeruginosa

Question 7

cause of bumble foot?

Answer 7

s. aureus

Question 8

what causes greasy pig?

Answer 8

s. hyicus.

Question 9

pustules on a pigs abdomen?

Answer 9

streptococcus

Question 10

diamond skin lesions? source?

Answer 10

erisipelothrix ruseopathiae. tonsil carriers or the environment

Question 11

rain scald? source?

Answer 11

dermatophylous congolensis. carriers or fomites

Question 12

foot rot in sheep. source?

Answer 12

dichelobacter nodosus, and fusarium necrophorum. carrier animals and environment

Question 13

digital dermatitis in cattle? source?

Answer 13

environment and feces

Question 14

what cells are seen in granulomatous inflammation

Answer 14

central necrosis with lymphs and macrophages. often w a thick fibrous capsule.

Question 15

classical granulomatous lesions are caused by

Answer 15

mycobacterium

Question 16

describe mycobacterium

Answer 16

G+ rod, lipid rich cellular membrane. acid fast. stain with ziehl nielsen. multiply intracellularly in macrophages. obligate parasites

Question 17

two common mycobacterium diseases

Answer 17

feline leprosy syndrome and panniculitis syndromes

Question 18

tx for canine leproid granuloma syndrome

Answer 18

nothing. most resolve after ulceration

Question 19

tx for feline leprosy syn

Answer 19

sx, appropriate antimycobacterium

Question 20

transmission of panniculitis in cats and dogs

Answer 20

trauma penetrates fat and innoculates the bacti in the fatty tissue.

Question 21

what does fat provide for the mycobacterium in the panniculitis syndrome

Answer 21

triglycerides for growth

Question 22

diagnosing surface vs superficial pyoderma

Answer 22

surface can be done with tape or swab.
superficial is often presumptive but can be done through sampling intact pustules

Question 23

how do you sample deep pyoderma

Answer 23

punch biopsy

Question 24

sampling cutaneous nodules?

Answer 24

FNA

Question 25

what stain for feline panniculitis

Answer 25

acid fast bc mycobacterium

Question 26

what types of infections do you c/s test

Answer 26

superficial pyoderma if not responding to imperical therapies and deep pyodermas.

Question 27

when do you treat pyoderma wiht systemic antibiotics

Answer 27

severe superficial pyoderma and always deep pyoderma. treat for a long time bc intracellular

Question 28

brown dog tick

Answer 28

Rhipicephalus sanguineus

Question 29

vector for rickettsia rickettsii

Answer 29

dermacentor variabilis

Question 30

anterior anal groove

Answer 30

ixodes. all ixodes

Question 31

borrelia burgdorferi vector

Answer 31

ixodes scapularis

Question 32

cytauxzoon felis vector

Answer 32

ambylomma americanum

Question 33

transmits hepatozoon americanum

Answer 33

amblyomma maculatum

Question 34

how do dogs get hepatozoon americanum

Answer 34

ingestion of the tick

Question 35

long mouth parts and not ornate

Answer 35

ixodes scapularis

Question 36

only tick we know with a hexagonal basis capituli

Answer 36

Rhipicephalus sanguineus

Question 37

what two ticks feed on many species

Answer 37

amblyomma americanum and haemaphysalis longicornis

Question 38

tick that asexually reproduces

Answer 38

haemaphysalis longicornis

Question 39

transmits theileria orientalis

Answer 39

Haemaphysalis longicornis

Question 40

tick with the rectangular basis capitulum but has large palps

Answer 40

haemaphysalis longicornis

Question 41

four drug classes that can be used for ticks

Answer 41

isoxazolines, pyrethroids, phenylpyrazole (fipronil), macrocyclic lactones

Question 42

only drug that works to repel ticks

Answer 42

pyrethroids/pyrethrins