GI Infections Flashcards
Foodborne illness causing bacteria due to preformed toxin
Staph aureus (poultry)
C. Perfringens (beef)
B cereus (rice)
Diarrheal illness from exposure to cantaloupes?
Listeria
Diarrheal illness with meningismus?
Listeria. Infection worse in pregnancy and immunocompromised patients
Diarrhea from raspberries or leafy greens (basil)? Treatment?
Cyclospora (tx with bactrim)
How to treat ascaris infection?
Roundworm that can grow long. Treat with albendazole or pyrantel pamoate in pregnancy
How do hookworms (necator americanus or ancylostoma) infect humans? Treatment?
By getting in through feet! Tx with albendazole
What worm causes serpigenous rash in back and buttox, nausea/vomiting, diarrhea, colitis, and eosinophilia?
Strongyloides
How to treat strongyloides
Ivermectin
How to diagnose strongyloides
Serum testing is most sensitive
How to treat tapeworm (Taenia, diphillobothrium)?
Praziquantel
What bacteria causes post-infectious arthritis and possibly GBS?
Campylobacter, tx with azithro
Limitations of C.diff PCR, possible solution?
Tests only for presence of toxin B gene, so can be positive for carriers. Proposed better test: EIA for GDH followed by EIA for toxin B, with or without gene PCR
Severe vs fulminant C.diff and tx?
Fulminant C.diff is severe CDI with hypotension, shock, ileus, megacolin
Severe treated with oral vanc 125mg QID, fulminant treated with oral vanc 500 QID, IV flagyl 500mg q8h. Consider vanc enemas in those with ileus.
Infection that causes rectal prolapse?
Whipworm (Trichuris)
What is scombroid?
Allergic histamine reaction in decomposing fish
