Gastroenteritis Flashcards
What is gastroenteritis?
Food poisioning - Caused by eating food contaminated with micro-organisms, toxins, parasites etc.
Symptoms of Gastroenteritis?
Diarrhoea
Abdominal Pain
Vomiting
Organisms with a short incubation period (1-6 hours)
Staph Aureus
Organisms with a moderate incubation period (12-48 hours)
Salmonella
Clostridium Perfringens
Organisms with a longer incubation period (2-14 days)
E.coli
Campylobacter
What is the incubation period of Campylobacter?
Usually 2-5 days
How is Campylobacter passed?
Carried in food
Describe the symptoms of Campylobacter
It is very invasive and presents as colitic syndrome
- RIF pain
- Bloody Diarrhoea
- Abdominal Pain
- Mimics Appendicits
What is the treatment for Campylobacter?
Supportive
Clarithromycin or Ciprofloxacin(Very ill, co-morbidities)
Complications of Campylobacter?
Guillan Barre Syndrome
Describe Guillan Barre Syndrome?
This starts out as tingling of peripheries
Progresses to paralysis
Describe what is seen on imaging Campylobacter infection?
Thumb Print Sign (as this is a colitic disease)
Describe Typhoid
This is always imported from areas such as Inidan, SE Asia, Africa
How is Typhoid contracted?
From food, water (Eg: Poorly washed salad)
Symptoms of Typhoid?
Fever
Systemically Unwell
Abdominal Pain
Constipation
Diagnosis of Typhoid?
Blood cultures are essential
Treatment of Typhoid?
Ciprofloxacin
Typical case of Typhoid?
Medical student goes on elective to India
Comes back systemically unwell and constipated
Incubation period of Typhoid?
3-21 days
Salmonella incubation period?
12-48 hours
Salmonella symptoms?
Diarrhoea
Vomiting
Abdominal Pain
Fever
Treatment of Salmonella?
Ciprofloxacin
E.Coli 0157 Incubation period?
12-72 hours
Symptoms of E.coli?
Colitis like
Bloody Diarrhoea
Vomiting
How is E.coli 0157 transferred?
In meat, raw milk, beef etc
Complications of E.coli 0157?
HUS
What is HUS?
Haemolytic Ureamic Syndrome
Causes abdominal pain, fever
High WCC low Hb
Who/when does Rotavirus present?
Common in children below two and during winter
Symptoms of Rotavirus?
Fever
Diarrhoea (Not bloody)
Vomiting
Treatment for Rotavirus?
Supportive
Describe Noroviurs?
Winter Vomiting Bug but presents all year round
Who does Norovirus affect?
All ages and is very infectious
How is Norovirus spread?
Faecal Oral/Person to Person/ Droplet
Describe the infectious does of Norovirus?
Very Low
Describe Norovirus Symptoms
D+V (EXPLOSIVE)
Describe incubation period for norovirus?
Very short
What does Stool Microscopy detect?
Parasites
What does Stool Culture detect?
Salmonella, Campylobacter, Shigella
What does Stool Toxins detect?
C.diff and E.coli 0157
What do blood cultures detect?
Typhoid and Salmonella
What does PCR detect?
Norovirus
What is treated with Ciprofloxacin?
Campylobacter, Typhoid, Salmonella
What is treated with supportive only?
E.Coli, Rotavirus, Noravirus
How do you treat C.diff?
Oral Metronidazole
Oral Vancomycin