GI infections Flashcards
Most common cause of travellers diarrhoea?
E Coli (incubation 12-48hours)
How do you test for C diff?
PCR for toxin A and B
How do you test for a bacterial infection?
Culture and sensivity.
How do you test for norovirus/rotavirus?
PCR.
Presentation of norovirus and management?
Winter vomiting bug.
Sudden onset of diarrhoea in adults, vomiting in children.
Self limiting.
If in hospital need to be in a side room, infection control measures and cohort nursing.
Is norovirus contagious?
Yes highlight contagious droplets from person to person.
Who gets rotavirus?
Children and immunocmpromised.
It is the most common cause of diarrhoea in children < 3.
What type of infection should be considered in a person who has had diarrhoea for longer than 7 days?
Parasitic and protozoal.
How does giardiasis present?
Prolonged, non bloody diarrhoea in travellers.
Foul smelling and explosive
Ix = stool microscopy.
How does cryptosporidium present?
Chronic diarrhoea in someone who is HIV +ve,
Often found in private wells / swimming pools.
How does amebiasis present?
Bloody diarrhoea for weeks with abdominal pain.
The diarrhoea is of a gradual onset.
Incubation period of campylobacter and source?
48-72 hours and usually comes from raw chicken.
Usually supportive but can give a macrolide (erythromycin or clarithromycin)
Complication of campylobacter infection?
Guillain barre syndrome
What are 2 short incubation infections?
Staph aureus (unrefrigerated meat) (severe vomiting)
Bacillcus cereus (rice) (vomiting)
Salmonella incubation period?
Usually around 12-48 hours after ingestion of a raw meats, eggs or milk.
