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bactérias > enterobacteriaceas > Flashcards

enterobacteriaceas Flashcards

1
Q

são

A

bacilos Gram- ubíquos

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2
Q

todas as entero

A

fermentam glucose, reduzem nitratos a nitritos e são oxidase-

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3
Q

entero imóveis

A

shigella
klebsiella
yersinia

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4
Q

entero fermentadoras da lactose

A

e. coli
klebsiella
serratia
enterobacter

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5
Q

sempre associadas a doença

A

yersinia pestis
shigella
salmonella typhi

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6
Q

LPS é formado por

A

polissacárido core
polissacárido O
lípido A = endotoxina

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7
Q

classificação de Kauffman-White

A

O > oligossacárido LPS
K > capsular
H > flagelar

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8
Q

outros fatores de patogenicidade

A

cápsula > antifagocítica
variação antigénica de fase expressão K e H
beta-lactamases, carbapenemases
sideróforos

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9
Q

resistentes a sais biliares

A

salmonella

shigella

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10
Q

meios de cultura de rotina

A

gelose-sangue
MacConkey (seletivo e diferenciador)
SS
selenito

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11
Q

meio CIN

A

yersinia, 30º 48h

colónias com centro vermelho

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12
Q

meio MacConkey sorbitol

A

EHEC é -

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13
Q

estudo bioquímico

A

catalase +
oxidase -
Api 20 E
MALDI-TOF

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14
Q

enterobac com aspeto mucoide

A

Klebsiella

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15
Q

urease+

A

proteus

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16
Q

H2S

A

salmonella (typhi +/-, restantes +)

proteus

17
Q

reação de Widal

A

diferencia febre tifoide de brucelose
salmonella aglutina com Ag O e H, brucella só com O

3-5ª semanas e repetir passado 14 dias para verificar subida de título ou seroconversão

18
Q

definição do SHU

A

lesão renal aguda + trombocitopenia + anemia hemolítica

19
Q

causas de SHU

A

Shigella e EHEC

20
Q

mobilidade em swarming

A

proteus

21
Q

o exame direto faz-se com fezes?

A

não porque lol ia ser impossível diferenciar

22
Q

no teste de Widal a aglutinação do O e do H

A

O > granular

H > flocular

bactérias (30 decks)

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