gastroenteritis Flashcards
when is it likely to be viral or bacterial
viral in children, bacterial in adults
possible mechanisms bacterial
mucosal adherence, mucosal invasion, toxin production- enterotoxin,cytotoxin
mechanism in watery diarrhoea
enterotoxins, adherence
mechanism in dysentery
mucosal invasion and damage
what organisms can cause watery diarrhoea
bacillus aureus, staph aureus, vibrio cholera, E coli, salmonella, camp jejuni, C dif
what organisms can cause dysentery
shigella, salmonella, e coli, c dif, Yersinia enterocolitica
what does salmonella affect
small and large bowel
symptoms salmonella
nausea, cramping, diarrhoea, fever. can lead to bacteraemia
what does shigella affect
damage to the intestinal mucosa.
symptoms shigella
freq small vol stools- blood and mucus
shigella associations
poor hygeine
salmonella associations
poultry, eggs
campylobacter associations
poultry, cattle
what type of diarrhoea does camp jej produce
profuse and watery. nausea, diarrhoea, cramps
how does staph aureus cause gastro
produces enterotoxin B causing massive secretion fluid into intestinal lumen
