Flashcards in GI Inf: Perspective Deck (13)
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1
What pathogens cause NONinflammatory diarrhea?
ETC
viruses
parasites (except amebiasis)
v. cholera
others all inflammatory
2
When should viral diarrhea be suspected?
vomiting prominent
incubation period >14h
lasts <3 days
3
When clinical findings make viral diarrhea less likely?
fever
tenesmus
dysentery
4
What is the main syndrome caused by E. histolytica?
dysentery w paucity of fecal leukocytes
5
What is one risk factor for traveler's diarrhea?
PPI therapy
6
What are common causes of CDAD?
amoxicillin variants most common
clinda and cephalosporins
7
How does CDAD present?
watery diarrhea, fever, leukocytes
8
What are the specifics of the toxin released by c. dif?
AB toxin
A = enterotoxin
B = cytotoxin
9
How can yersinia dysentery be recognized?
RLQ pain
few if any leukocytes in stool
can mimic appendicitis and cause bacteremia
10
What pathogens is stool routinely cultured for?
salmonella, shigella, campylobacter, yersinia
11
What diagnostic modalities can confirm the clinical diagnosis of diarrhea?
routine stool culture, special stool culture, stool ova and parasites, toxin assay for c. dificile, immunoassay for rotavirus
12
What is the workup for AIDS-related diarrhea?
H/P, CD4, routine labs
3 sets of stool for O/P, culture, and c. dif
if above fails, flex sig or colonoscopy (CMV)
if above fails, EGD
13
