Gastroenteritis Flashcards Preview

STEP II > Gastroenteritis > Flashcards

Flashcards in Gastroenteritis Deck (26):
1

What is the best test to confirm a Dx of Giardiasis?

stool Ag

2

Wat is the best Tx for Giardia?

metronidazole

3

What is the Tx for Cryptosporidium?

paromomycin

4

What is the Tx for Isospora?

TMP-SMX

5

What is the Tx for B.cereus or staphylococcal gastroeneteritis? Why?

no Tx; mediated by toxins and resolve spontaneously

6

Which organisms cause gastroenteritis w/ RBCs and WBCs in the stool?

Salm, Shig, Campylobacter, Yersinia, E. coli, Vibrio parahemolyticus

7

What is the Tx for mild gastroenteritis caused by Salmonella, Shigella, Campylobacter, E. coli, Vibrio parahemolyticus, or Yersinia?

nothing!

8

What is the Tx for gastroenteritis caused by salm, Shig, Yersinia, Campylobacter, E. coli, or Vibrio parahemolytica that is severe (accompanied by pain, fever, blood, abd. tenderness)?

ciprofloxacin

9

What don't you give in the case of HUS?

Don't give Abx and plts!!

10

Why don't you give Abx in HUS?

cell lysis --> release of Shiga-like toxin

11

Why don't you give plts in HUS?

worsens clotting

12

Which people are more prone to infection w/ Vibrio vulnificus?

w/ liver disease

13

What can be seen on PE in liver disease pts w/ V. vulnificus infection?

bullous skin lesions

14

What are the most likely causes (3) for bloody diarrhea and a fever 1 hour after eating contaminated food?

Salm, Shig, Camp

15

What are 3 ways in which IBS differs from other forms of chronic diarrhea?

1. alternates w/ constipation
2. predominantly PAIN
3. no Sx @ night

16

What drug is used to treat Diarrhea-predominant IBS?

Alosetron

17

What is the mech of alosetron?

5-HT (serotoin) antagonist

18

What drug is used to treat constipatrion predominant IBS?

Tegaserod

19

What is the mech of action of Tegaserod?

5-HT agonist

20

What should be used to treat all IBS pts?

fiber and bulking agents

21

What kind of drugs are hyosayamine and dicyclomine, also used to tx IBS?

anti-spasmodics

22

What kind of anti-depressants are used to tx IBS?

TCAs

23

Intermittent diarrhea, flushing, wheezing, and/or cardiac problems (tricuspid insufficiency, pulmonic stenosis).

Carcinoid

24

What do the neurotransmitters do to the right heart that causes tricuspid regurg and pulm stenosis?

fibrosis

25

What is the test for carcinoid syndrome?

5-HIAA level in urine

26

What is the Tx for carcinoid syndrome?

octreotide