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GI--Wk 4 > Lower GI Micro > Flashcards

Lower GI Micro Flashcards

1
Q

S. aureus food poisoning

timeline

A

1-7 hr after, diarrhea for 1-3 days

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2
Q

Bacillus cereus

where is it found

A

cooked rice

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3
Q

Bacillus cereus

types and etiologies

A

emetic: cereulide enterotoxin forms pores
diarrheal: excessive fluid secretion

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4
Q

Clostirium boulinum

infection routes

A

foodborne (ingesting toxin)–canned foods
wound (toxin generated in wound)
infant (ingestion of spores)–honey

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5
Q

Botulinum neurotoxin effect

A

zinc-dependent proteolysis of SNARE proteins

muscle weakness and paralysis

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6
Q 
Bacteria
Gram +
Large bacilli
Endospore-forming
Facultative anaerobe
Mostly motile
β-hemolytic
A

Bacillus cereus

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7
Q 
Bacteria
Gram +
Bacilli
Spore-forming
Obligate anaerobe
Motile
A

Clostridium botulinum

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8
Q 
Bacteria
Gram +
bacilli
spore-forming
obligate anaerobe
non-motile
A

C. perfringes

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9
Q 
Bacteria
Gram -
bacilli (spirilli)
microaerophilic
motile
cold-sensitive
A

Campylobacter jejuni

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10
Q 
Bacteria
Gram -
bacilli
non-spore forming
H2S + and lactose -
motile, flagellated
A

Salmonella enterica

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11
Q

Clostridium perfringes

Sx

A

diarrhea w/o fever or vomitting for

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12
Q

Campylobacter jejuni

Sx

A

diarrhea, fever

possibly vomitting, bloody diarrhea

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13
Q

Complication of Campylobacter

A

Guillain-Barré

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14
Q

Karmali agar

A

Campylobacter jejuni

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15
Q

Campylobacter jejuni

harbored in

A

poultry

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16
Q

Clostridium perfringes

harbored in

A

cafeteria

17
Q

Salmonella enterica

Sx

A

diarrhea, fever

18
Q

Complication of Salmonella

A

reactive arthritis

19
Q

Reservoirs for Salmonella

A

dairy, eggs, veggies

20
Q 
Bacteria
Gram -
vibrio (curved rod)
factultative anerobes
flagellated, mobile
oxidase +
vibrio ssp
A

Vibrio spp

21
Q 
Bacteria
Gram +
bacillus
non-fastidious*
flagellated
non-spore forming
oxidase -
A

Listeria monocytogenes

22
Q 
Bacteria
Gram -
bacillus
facultative anaerobe
non-motile
non-spore forming
mainly lactose -, H2S -
A

Shigella spp

23
Q 
Bacteria
Gram -
bacillus
facultative anaerobe
motile
non-spore forming
mainly lactose +
A

E. coli

24
Q

Stain for vibrio

A

Kovacs oxidase reagent

turns purple

25
Q

Sx of vibrio

A

mild bloody diarrhea
fever
nausea, vomiting

26
Q

Vibrio reservoirs

A

fish

27
Q

Listeria Sx

A

fever, mild GI, muscle ache or stiff neck

28
Q

Shigella Sx

A

bloody diarrhea

fever

29
Q

What causes bacterial dysentery

A

shigella

30
Q

Complications of shigella

A 
HUS (hemolytic uremic syndrome)
reactive arthritis (flexnori)
31
Q

Cholera toxin

A

Vibrio cholerae

activate adenylate cyclase –> Cl- and water

32
Q

Typhoid fever Sx

A

high fever
weakness and headache
diarrhea or constipation

GI--Wk 4 (11 decks)

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