The enterics Flashcards by Rishi Sharma

shiga-like toxin

i. bacteria
ii. mechanism
iii. symptoms

i. EHEC (138)
ii. ADP ribosylation of 60s ribosome
iii. blood diarrhea, abdominal cramping
m74

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traveler’s diarrhea

ETEC

138

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Two toxins released by ETEC?

symptoms?

heat labile (cAMP)
heat stable (cGMP)
watery diarrhea; traveler’s diarrhea
138

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anemia, thrombocytopenia, renal failure, caused by infected hamburger meat; bloody diarrhea

E coli O157:H7
EHEC
138, m74

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invasive bacteria causing blood diarrhea, fever; similar to shigellosis

EIEC

138

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gram neg, comma / s shaped, oxidase positive, grows at 42 C
blood diarrhea in children
i. bacteria
ii. how does it spread
iii. resevoir

campylobacter jejuni
ii. fecal-oral transmission
iii. ingestion of meat, unpasteurized milk
138, m 80

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gram neg, comma / s shaped, oxidase positive, grows in alkaline media
endemic to developing countries
rice water diarrhea
i. bacteria
ii. mechanism of diarrhea

i. vibrio cholerae
ii. cholera toxin which activates Gs permanantly (increases cAMP)
139, 124, m 80

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poor sewage in developing countries causing watery diarrhea

i. bacteria
ii. toxin produced

i. vibrio cholerae
ii. cholera toxin
139, 124, m 80

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MCC of duodenal ulcers

i. bacteria
ii. also cause other findings

i. H. pylori

ii. second leading cause of gastric ulcers, behind ASA

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H pylori

i. stain and shape
ii. other characteristics

i. g neg rod
ii. catalase, oxidase, urease +
140, m81

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aspiration PNA - lobar - in alcoholic or diabetic

klebsiella pneumonia

138, m75

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red currant jelly

klebsiella

138

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gram neg rod, fast lactose fermenter, nosocomial UTI in urinary cath

e. coli and klebsiella

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nosocomial UTI with bright red pigment

Gram neg, oxidase+, slow lactose fermenter

serratia

174, m76

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gram neg rod, non lactose fermenter, produces H2S
can cause typhus fever
i. bacteria
ii. important virulence factor

salmonella typhi
ii. Vi antigen
139, m76

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Salmonella contraction

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eating chicken and uncooked eggs

1-3 weeks after expsure: fever, headache, abdominal pain, diarrhea, rose spots on abdomen
i. bacteria

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Salmonella typhi

fever, headache, abdominal pain, rose spots on abdomen

i. bacteria
ii. where can this bacteria colonize?

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Salmonella typhi
ii. gallbladder (carrier state)
139, 78

sickle cell anemia with bone pain, elevated ERS, radiograph showing bone swelling

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Salmonella osteomyelitis

173

what infections are more common in asplenic patients

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SHiNE SKiS

122

gram neg rod, non lactose fermenter, oxidase neg
blood diarrhea
i. bacteria if has flagella
ii. bacteria if does not have flagella

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i. salmonella
ii. shigella
139

struvite stones, nosocomial UTI with urinary catheter, urease positive, swarming on agar plate
i. bacteria

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Proteus mirabilis
gram neg 135
stones 544
UTI 174, 178

fever, abdominal pain, diarrhea with flecks of bright red blood and pus
gram neg, lactose non fermenter, does not grow H2S on agar
i. bacteria
ii. toxin

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i. shigella
ii. shiga toxin - inactivates 60s ribosome
this bacteria invades cells
124, 139, m 76