Lower GI infections Flashcards
Stomach normal flora
lactobacilli
streptococci
yeasts
Small bowel normal flora
lactobacilli
streptococci
yeasts
clostridia
enterobactericeae
enterococci
Large bowel normal flora
lactobacilli
streptococci
yeasts
clostridia
enterobacteriaceae
enterococci
protozoa
Define dysentery
severe diarrhoea with blood or mucus
Define gastroenteritis
inflammation of stomach and intestinal mucosa
Causative organisms of most cases of viral gastroenteritis
norovirus
rotavirus
Symptoms of GI infections
diarrhoea
vomiting
abdo pain
blood in stools
systemic symptoms:
- fever
- spread to other organs/spaces
- jaundice
- renal failure
What neurological symptoms can botulism cause?
visual disturbances
descending paralysis
What neurological condition can campylobacter jejuni cause?
Guillain-Barre syndrome
Which microbial organisms carry enterotoxins to cause secretory diarrhoea?
Staphylococcus aureus
E Coli
What infection can be caught from backpacking and drinking from mountain streams?
giardiasis
What GI pathogens can cause reactive arthritis?
salmonella
shigella
campylobacter
What type of bacteria is C diff?
gram positive
spore-forming anaerobe
toxigenic + non-toxigenic
Diagnosis of C diff
detection of glutamate dehydrogenase (GDH)
PCR to detect toxins A and B genes
Helicobacter pylori diagnosis
urea breath test
stool antigen test
