Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DWT test 2 > bacteriology 7 > Flashcards

bacteriology 7 Flashcards

1
Q

gram positive cocci that form chains

A

streptococci
facultative anaerobic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

where are streptococci

A

widely distributed in nature
most commonly found on animal and humans
mucus membranes of URT, lower genitourinary tract and GIT
also on skin
may live in the environment as saprophytes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

part of normal flora

A

strep zooepidemicus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

carrier animals

A

strep equi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

streptococci virulence factors

A

avoiding phagocytosis
killing phagocytes and causing inflammation
but species causing disease in animals do not have intracelluar survival

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

avoid phagocytosis

A

m protein-major virulence for strep
anti-phagocytic properties-PMN and macrophages
induces antibody production (currently used in vaccines)
capsules-only on some strains and species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

killing phagocytes

A

wide range of different exotoxin
hemolysin-cytotoxic for RBC, WBC and platelets
beta-clear and kill RBC-horses,cattle, dog
alpha-green-cattle, human and dog
gamma-no hemolysis-non-pathogenic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

streptococcal disease tend to be

A

acute (Short duration)-cleared with production of protective antibodies

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

type of hypersensitivity reaction

A

type III observed in streptococcal disease

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

strangles

A

strep equi equi
cervical lymphadenitis
contagious disease of horses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

mastitis

A

cow
strep agalactiae-contagious in a carrier state
strep dysgalactiae
strep uberis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

pneumonia

A

lower respiratory tract infections
normal flora of URT causes these infection
strep zooepidemicus-dog and pig (horse)
strep canis-dogs and cats
streph equisimilis-pig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

neonatal septicemia

A

observed in range of species including foals, piglets, puppies and kittens
localization in many other body sites can occur

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

endometritis in mares

A

strep equi ss zooepidemicus
most common cause of endometritis which is a major disease in broad mared

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

necrotising fasciitis

A

grp g (strep canis) dogs and cats
grp a (strep pyogenes) human

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

treatment

A

ancillary therapy
antibiotic

17
Q

ancillary therapy

A

drainage (thickened walled abscesses)
nursing care

18
Q

antibiotics

A

beta-hemolytic strep are predictably sensitive to penicillin
but antimicrobial therapy may or may not be indicated
strep are frequently resistant to fluoroquinolones, aminoglycosides and tetracyclines
alpha-hemolytic and enterocci commonly have broader resistance to antibiotics including penicillin

19
Q

gram positive, club shaped rods, facultative anaerobes

A

trueperella pyogenes
corynebacterium
c pseudotuberculosis
c renale

20
Q

trueperella pyogenes

A

normal flora on mucus membranes and skin of ruminants and pigs

21
Q

c pseudotuberculosis

A

nf skin and mucous membranes and git
environment (8 months)
lesions of infected animals-act as reservoirs

22
Q

c renales

A

present in the genital tract of carrier cows and bulls

23
Q

virulence factors

A

exotoxin-pyolsyin and phospholipase
trueperella pyogenes and c pseudotb
pili and urease production-c renale and t pyogenes
facultative intracelluar bacteria-c pseudotuberculosis

24
Q

trueperella pyogenes

A

most common cause of pyogenic infections in cattle and pigs
lesions
initiated by trauma/viral infection
lesions may be localised, regional or metastatic

25
Q

caseous lymphadentis (CLA) cheesy gland

A

corynebacterium pseudotuberculosis
economically important in sheep and goats
infection of superficial lymph nodes
requires break in skin
may disseminate (thin ewe)

26
Q

pigeon breast/pigeon fever

A

corynebacterium pseudotuberculosis
disease of horses
thick walled abscesses

27
Q

ulcerative lymphangitis

A

corynebacterium pseudotuberculosis
horse and cattle
hind limbs
spread via lymphatic with ulcerating lesions

28
Q

infectious pyelonephritis

A

corynebacterium renale
disease in cows
ascending infection
hemorrhagic cystitis, ureteritis, pyelonephritis

29
Q

pizzle rot (balanoposthitis)

A

corynebacterium renale
sheep-ram and whethers
increase protein in feed leads to increase urea in urine
produces urease with breaks down urea to ammonia which cause irritation of skin of preputial opening and which bacteria can invade

30
Q

signalment(Species, history and clinical signs)

A

c renale
c pseudotuberculosis

31
Q

obtain sample from lesion if in sterile site

A

pus, effusion (trueperella as for staph and strep)

32
Q

perform a gram stain/diff quik

A

would see short rods (Streps)

33
Q

culture

A

definitive diagnosis

34
Q

surgical debridement/excision/drainage

A

important aspect of therapy

35
Q

antibiotics

A

not effective in chronic cases as bacteria are inside abscess with a thick capsules which means poor penetration
if ruminants are involved, they may not be worth the cost of prolonged therapy

DWT test 2 (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions