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STEP II > Gastroenteritis > Flashcards

Gastroenteritis Flashcards

1
Q

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

A

stool Ag

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2
Q

Wat is the best Tx for Giardia?

A

metronidazole

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3
Q

What is the Tx for Cryptosporidium?

A

paromomycin

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4
Q

What is the Tx for Isospora?

A

TMP-SMX

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5
Q

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

A

no Tx; mediated by toxins and resolve spontaneously

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6
Q

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

A

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

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7
Q

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

A

nothing!

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8
Q

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)?

A

ciprofloxacin

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9
Q

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

A

Don’t give Abx and plts!!

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10
Q

Why don’t you give Abx in HUS?

A

cell lysis –> release of Shiga-like toxin

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11
Q

Why don’t you give plts in HUS?

A

worsens clotting

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12
Q

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

A

w/ liver disease

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13
Q

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

A

bullous skin lesions

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14
Q

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

A

Salm, Shig, Camp

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15
Q

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

A
  1. alternates w/ constipation
  2. predominantly PAIN
  3. no Sx @ night
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16
Q

What drug is used to treat Diarrhea-predominant IBS?

A

Alosetron

17
Q

What is the mech of alosetron?

A

5-HT (serotoin) antagonist

18
Q

What drug is used to treat constipatrion predominant IBS?

A

Tegaserod

19
Q

What is the mech of action of Tegaserod?

A

5-HT agonist

20
Q

What should be used to treat all IBS pts?

A

fiber and bulking agents

21
Q

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

A

anti-spasmodics

22
Q

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

A

TCAs

23
Q

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

A

Carcinoid

24
Q

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

A

fibrosis

25
Q

What is the test for carcinoid syndrome?

A

5-HIAA level in urine

26
Q

What is the Tx for carcinoid syndrome?

A

octreotide

STEP II (79 decks)

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