23 - Gastroenteritis Flashcards Preview

Clinical Pathology > 23 - Gastroenteritis > Flashcards

Flashcards in 23 - Gastroenteritis Deck (16):
1

Gastroenteritis - PC

acute onset
Vomiting
Diarrhoea
Abdominal pain
Systemic effects - fever

2

Gastroenteritis - complications

Dehydration
Renal failure
HUS
Toxic Megacolon
GBS - guillian-barre syndrome
Salmonella

3

Gastroenteritis - investigations

Bloods - FBC, U&E, CRP, blood cultures
AXR - if severe
Stool

4

Viral Gastroenteritis - norovirus

Norwalk-like virus
SRSV (small round structured virus)

5

Gastroenteritis - aerosols

Projectile vomiting + diarrhoea
Lasts 24-48 hours
Letting illness take its course + drink lots of water

6

Parasitic Gastroenteritis - names of causative agents

Cryptosporidium
Giardia
Entamoeba

7

Cryptosporidium infection

Waterbourne disease - pools, drinking water, animals
Oocyst resistance to chlorine disinfectants

8

EHEC/VTEC

Enterohaemorrhagic

Colitis/HUS

9

ETEC

Enterotoxigenic

Traveller's diarrhoea

10

EAggEC

Enteroaggregative

Travellers' diarrhoea

11

EIEC

Enteroinvasive dysentery like

12

EPEC

Enteropathogenic

Childhood diarrhoea

13

E.Coli facts

Shiga toxin virulence factor
Cattle major source
10-15% develop haemolytic uraemic syndrome (HUS)

14

Gastroenteritis - treatments

Avoid antibiotics except in young and very old. Campylobacter - prolonged or severe symptoms

15

Antibiotics and high risk of CDI

Cephalosporins
Clindamycin

16

CDI therapy

Relapse in >20% of patients
3-5 days until resolution of diarrhoea
Both affect gut flora
Vancomycin and metronidazole use is a risk factor
Potential for emergence of resistance to vancomycin / metronidazole in C diff

Decks in Clinical Pathology Class (65):