+
Cards In This Set
| Front | Back |
|
Gastroenteritis: most common symtpoms? (4)
|
Diarrhea****
Nausea Vomiting Abdominal pain |
|
Main ways to get gastro?
|
Ingesting contaminated food or drink...or swimming/bathing in contaminated water
|
|
What pathogens can cause gastro?
|
Bacteria, viruses, and protozoans
|
|
Most commonly encountered viral pathogens?
|
Norovirus, rotavirus, astrovrius, and enteric adenovirus
|
|
Imp pediatric cause of gastro?
|
Rotavirus
|
|
Which virus is responsible for most adult gastro?
|
Norovirus
|
|
Mechanism of norovirus?
|
Directly infect cells of the small intestine, resulting in alteration of the mucosa architecture (notably shortening or loss of the microvilli), causing diarrhea on teh basis of malabsportion. short-lived illness (24-48 hrs)
|
|
Most commonly find protozoan infections in which people?
|
Travelers and people who may bed exposed to untreated water (eg: hikers)
|
|
2 most common protozoan pathogens?
|
Entamoeba histolytica and giardia lamblia
|
|
Entamoeba histolytica invades where? Causes what?
|
Invades colon. Causes bloody diarrhea
|
|
Giardia lamblia invades wehre?
|
Invades small intestine. causes a malabsoprtive syndrome and an osmotic diarrhea.
|
|
Major bacterial pathogens in U.S.? (3)
|
Salmonella adn Campylobacter jejuni and Shigella
|
|
Most common bacterial diarrhea amongst travelers?
|
Enterotoxigenic E. coli
|
|
Mechs that bacteria can --> gastro?
|
*direct invasion of the mucsoa with tissue destrcution adn inflammation
*growth of bacteria within the bowel lmen with toxin prdouction and release *adherence (but not invasion) of the bacteria to the mucosal surface with interference of the normal absoprtive process without tissue destruction *production of a toxin during bacterial growth in food or water, which is then ingested preformed |
|
Food hx to ask about?
|
All foods in last 48 hrs + changes in dietary habits, like earitn at resutaurants or picnics
|
