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Step III
Step III - GI 5
| Question | Answer |
|---|---|
| Surgery is curative under what circumstances for Crohn’s dz | Stricture OR obstruction |
| Stress ulcer prophylaxis is used under what circumstances using what drug(s) | head trauma/mechanical intubation/coagulopathy + steroid use combo/burns; H2 (-)/PPI/sucralfate |
| What is the most important feature of diarrhea that directs you to infectious type | BLOOD = invasive |
| What is the MCC of food poisoning | Campylobacter |
| Campylobacter is also a/w with what other dz | Reactive arthritis/Guillain Barre |
| Where is salmonella typically found | Eggs and chicken |
| Seafood is a/w what infectious diarrhea bug | Vibrio parahemolyticus |
| Which E. coli type is a/w HUS | E. coli 0157:H7 |
| Undercooked beef is a/w what bug | E. coli 0157:H7 |
| Pt has liver dz, skin lesions, ate clams/oysters, and now has bloody diarrhea. Dx | Vibrio vulnificus |
| Beside campylobacter what other bug is a/w reative arthritis | Shigella |
| Rodents, infected vegetable/meat/milk w/ urine/feces of rodent. Bug | Yersinia |
| If case does not mention blood in diarrhea what test can you order that will allow you to link dx with infectious diarrhea bugs | Fecal leukocytes |
| Best initial test for bloody diarrhea | Fecal leukocytes |
| Most accurate test for bloody diarrhea | Fecal cx |
| Tx for mild bloody diarrhea | IVF |
| Best initial Tx for severe bloody diarrhea | Fluoroquinolone eg cipro |
| What is defined as severe diarrhea | Fever/blood/ab pain/HYPOtension/tachy |
| What are the bugs that more likely present w/ bloody diarrhea (but can also be non-bloody, shitballz!) | campylobacter, salmonella, vibrio para, e. coli, yersinia, amebia, shigella, vibrio vulnificus |
| Which bugs NEVER produce bloody diarrhea | rotavirus/norwalk/giardia/scombroid/b. cereus/s. aureus/cryptosporidiosis |
| Pt w/ non-bloody diarrhea + vomiting. Bug | S. aureus |
| Pt w/ non-bloody diarrhea + camping/hiking OR men having sex w/ men + c/o flatus/bloating/steatorrhea. Bug | Giardia |
| Most accurate test for Giardia | ELISA Ag >>>> 3 stool ova parasite test |
| Tx for Giardia | metro |
| Pt w/ non-bloody diarrhea + HIV w/ CD< 100. Bug | Cryptosporidiosis |
| Pt w/ non-bloody diarrhea onset 10 minutes of eating tuna/mahi mahi/mackerel + wheezing, coughing, flushing/vomiting. Bug | Scombroid (histamine fish poisoning) |
| Tx for scombroid | Benadryl |
| Dx for cryptosporidiosis is made by | Modified acid fast stain |
| Pt w/ bloody diarrhea + hx antibx days/weeks ago + fecal luekocytes. Bug | C. dif |
| Best initial test for C. dif | Stool TOXIN assay |
| Best initial tx for c. dif | Metro |
| If metro fails for tx of C. dif then next tx | PO vanc (NOT IV) |
| Pt has C. dif and tx w/ metro. Resolves only to come back again. Tx | Metro again (not vanc) |
| Flushing, wheezing, chr diarrhea + episodes HYPOtension | Carcinoid syndrome |
| Diagnose Carcinoid syndrome with | Urinary 5-HIAA level |
| Tx for Carcinoid syndrome | Octreotide (somatostatin analogue) |