Gastroenteritis and Food Poisoning Flashcards Preview

JL Gastrointestinal > Gastroenteritis and Food Poisoning > Flashcards

Flashcards in Gastroenteritis and Food Poisoning Deck (138)
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1

What condition causes GI symptoms, diarrhoea, vomiting, abdominal pain and relates to invasion of tissue +/- toxin production?

Food poisoning

2

What is the commonest cause of food poisoning?

Campylobacter

3

What cause of food poisoning is rare, but can lead to morbidity and outbreaks?

E coli O157

4

What two organisms have a short incubation period of 1-6 hours?

Staph aureus and Bacillus cereus

5

What two organisms have a medium incubation period of 12-48 hours and there is invasion/toxin in gut which can often cause blood diarrhoea?

Salmonella
CI perfringens

6

What 2 organisms have a long incubation period of 2-14 days and can cause bloody diarrhoea?

Campylobacter and E coli O157

7

How long does it take for labarotory confirmation of bacteria?

48 hours for culture result

8

What two food products can campylobacter come from?

Raw milk
Poultry

9

Which organism rarely causes outbreaks, occurs in small numbers and results in pain, blood and a fever?

Campylobacter

10

What is the treatment for campylobacter?

Ciprofloxacin/erythromycin

11

What 3 food products can salmonella enteritidis come from?

Poultry, meat, raw egg

12

Where is salmonella occuring?

In animal gut

13

What is the treatment for salmonella enteritidis, which causes diarrhoea, vomiting, blood and fever?

Ciprofloxacin

14

What are the three most common groups of salmonellae?

B, C and D

15

What king of diarrhoea does E coli O157 cause?

Bloody

16

Is the infectious dose low or high for E coli O157?

Low

17

What two food products can E coli O157 come from?

Beef and raw milk/water

18

How can E coli O157 be transmitted?

Person to person

19

What toxin does E coli O157 produce?

Verotoxin (VTEC)

20

What organism can cause bloody diarrhoea nad haemorrhagic colitis?

E coli O157 VTEC

21

What syndrome can Haemolytic Uraemic Syndrome (HUS)?

E coli O157

22

`What three things does verotoxin do?

1. Binds to receptors found on renal cells, RBC and others
2. Inhibits protein synthesis
3. Causes cell death

23

What is this a presentation of: abdominal pain, fever, pallor, petechiae, blood diarrhoea and oliguria?

HUS

24

What patients are commonly infected by HUS?

Under 16 years old

25

In HUS what are the white cells like, platelets, Hb, LDH?

High WWC
Low platelets
Low Hb
LDH > 1.5 x normal

26

How is HUS investigated?

Send stool culture samples for all bloody diarrhoea samples

27

Other than U&S, FBC, film, LFT, clotting what else would you send for?

Urine (dipstick/micro)
Lactate dehydrogenase

28

What are three complications of HUS?

1. Acute renal failure
2. Thrombocytopaenia
3. Haemolytic anaemia

29

What 3 drug types are NOT given in HUS?

1. Antibiotics
2. Anti-motility agents
3. NSAIDS

30

What kind of diagnosis are these factors involved in: selective culture, sorbitol non fermenter, E coli isolated, check for O157 antigen?

Microbiological diagnosis