Gastroenteritis

Question 1

What are the incubation periods of different causes of gastorenteritis?

Answer 1

1-6 hours - staph aureus and bacillus cerus
12-48 hours - salmonella and E.coli
48-72 hours- shigella and campylobacter
>7 days - giardiasis and amoebiasis

Question 2

What are the toxin-producing causes of gastroenteritis?

Answer 2

Staph Aureus
C.perfringens
Bacillus Cerus
E.Coli 0157

Question 3

What is the most common cause of gastroenteritis?

Answer 3

Campylobacter

Question 4

Which 2 causes of gastroenteritis can cause large outbreaks?

Answer 4

E.coli and salmonella

Question 5

Which cause of gastroenteritis is the most common in children under 3 years of age?

Answer 5

Rotavirus

Question 6

Which cause of gastroenteritis can cause explosive vomiting?

Answer 6

Norovirus

Question 7

Which cause of gastroenteritis should be suspected in patients who have been travelling?

Answer 7

E.coli

Question 8

Which causes of gastroenteritis can cause bloody diarrhoea?

Answer 8

Campylobacter
Shigella
E.coli 0157

Question 9

How can campylobacter be picked up?

Answer 9

Poultry
Raw milk
Poor food prep

Question 10

How can salmonella be picked up?

Answer 10

Raw egg
Poultry
Meat
Reptiles

Question 11

How can E.coli be picked up?

Answer 11

Beef
Raw milk
Water

Question 12

How can bacillus cerus be picked up?

Answer 12

Starchy foods e.g rice

Question 13

How is infection with C.Diff managed in terms of non-severe, severe and life threatening stages?

Answer 13

Non severe - oral metronidazole
Severe - oral vancomycin
Life threatening - Oral vancomycin and IV metronidazole

Question 14

Which causes of gastroenteritis can cause the complication of haemorrhage colitis?

Answer 14

C.diff and E.coli

Question 15

Which cause of gastroenteritis can involve HUS as a complication?

Answer 15

E.coli

Question 16

Which cause of gastroenteritis can cause bacteraemia in the immunosuppressed?

Answer 16

Salmonella

Campylobacter

Question 17

Which causative organisms of gastroenteritis do routine lab tests on faeces look for?

Answer 17

Salmonella 
Shigella 
Campylobacter 
Cryptosporidium 
E.coli 
C.diff

Question 18

Which cause of gastroenteritis would need a blood culture for diagnosis?

Answer 18

Typhoid

Question 19

Which cause of gastroenteritis could stool PCR diagnose?

Answer 19

Norovirus

Question 20

Which causes of gastroenteritis could stool microscopy diagnose?

Answer 20

Giardia, amoeba, parasites

Question 21

Which causes of gastroenteritis could stool toxins diagnose?

Answer 21

Clostridium difficile and E.coli