BACTE LEC - Strep Flashcards Preview

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Flashcards in BACTE LEC - Strep Deck (54):
1

morphology of strep

cocci in chains or pairs

2

metabolism of strep

lactic acid fermentation

3

normal habitat of strep

throat, upper RT

4

catalase rxn

-

5

growth of strep more pronounced on which agar

enriched agar [blood agar]

6

appearance of colonies

pinpoint, transparent colonies

7

strep requires increased ___for growth

CO2

8

pigment of serrati

prodigiosin [red]

9

pigment of aeruginosa

thiocyanin [blue green]

10

classif based on physiologic characteristics
pus producing

pyogenic

11

type of hemolysis of pyogenic strep

beta

12

type of hemolysis of viridans

alpha or non

13

type of hemolysis of lactic acid --

non-hemolytic/gamma

14

classif based on physiologic characteristics
elevation of wbc

pyogenic

15

classif based on physiologic characteristics
opportunistic patho

viridans

16

not part of lancefield group

viridans

17

classif based on physiologic characteristics
non hemolytic, dairy products, Lancefield group N

Lactic acid

18

classif based on physiologic characteristics
flora of intestine
resistant to vancomycin

enterococci

19

strep Grp A susceptible to

Bacitracin

20

group a and group b RESISTANT TO

Sulfomethoxazole and Trimethoprim (SXT)

21

for accuracy of group a identification

Sulfomethoxazole and Trimethoprim (SXT)

22

resistant to bacitracin and sxt

s agalactiae

23

group a strep classified accdg to

cell wall structure

24

pathogenic determinants of group a strep

M protein
Antiphagocytic substance/enzyme
adherence to mucosal cells

25

two hemolysin

SLO and SLS

26

prevents phagocytosis, adheres to cell wall

M protein

27

type of hemolysin
oxygen labile

slo

28

type of hemolysin
active on reduced form [anaerobic]
-highly antigenic

slo

29

type of hemolysin
-oxygen stable

SLS

30

type of hemolysin
-hemolysis around colony [aerobic]
-non-antigenic

SLS

31

type of hemolysin
-lyses leukocytes

SLS

32

causes scarlet fever/rash

erythrogenic toxin

33

spreading factor

hyaluronidase

34

redness of skin

erythema

35

fibrinolytic
utilized as treatment for blood clot

streptokinase

36

clinical infections
also called strep throat
abrupt onset

bacterial pharyngitis and tonsilitis

37

clinical infections
ast very predictable

bacterial pharyngitis and tonsilitis

38

clinical infections
s/s: sore throat, malaise, fever, headache, nausea, vomiting, abdominal pain

bacterial pharyngitis and tonsilitis

39

clinical infections
s/s: tonsils and pharynx inflamed

bacterial pharyngitis and tonsilitis

40

clinical infections
s/s: cervival lymph nodes: swollen and tender

bacterial pharyngitis and tonsilitis

41

clinical infections
s/s: weeping lesions

pyodermal infection/impetigo

42

onset of pyodermal infection

2-5 years

43

onset of bacterial pharyngitis and tonsilitis

abrupt

44

easily treated infection

pyodermal infection/impetigo

45

MOT for bacterial pharyngitis and tonsilitis

droplets and close contact

46

caused by erythrogenic toxin

scarlet fever

47

s/s: desquamation, strawberry tongue, tongue yellow white w/ red

scarlet fever

48

susceptibility test for scarlet fever

dick's test

49

test: erythrogenic toxin is injected

dick's

50

+ test for dick's t

redness and swelling

51

implication of + test in dick's test

susceptible to scarlet fever, no Ab yet

52

diagnostic test for scarlet fever

schultz-charlton reaction

53

test:antierythrogenic toxin is injected

schultz-charlton reaction

54

result of schultz-charlton reaction

rash will blanch then fade

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