Flashcards in GI Inf: Perspective Deck (13)
What pathogens cause NONinflammatory diarrhea?
parasites (except amebiasis)
others all inflammatory
When should viral diarrhea be suspected?
incubation period >14h
lasts <3 days
When clinical findings make viral diarrhea less likely?
What is the main syndrome caused by E. histolytica?
dysentery w paucity of fecal leukocytes
What is one risk factor for traveler's diarrhea?
What are common causes of CDAD?
amoxicillin variants most common
clinda and cephalosporins
How does CDAD present?
watery diarrhea, fever, leukocytes
What are the specifics of the toxin released by c. dif?
A = enterotoxin
B = cytotoxin
How can yersinia dysentery be recognized?
few if any leukocytes in stool
can mimic appendicitis and cause bacteremia
What pathogens is stool routinely cultured for?
salmonella, shigella, campylobacter, yersinia
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
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