APP Liu GI Infections Flashcards
What percent of Traveler’s diarrhea do intestinal viruses account for?
0-15% (most are bacterial)
What are top causes of bacteria Traveler’s diarrhea?
E. coli
Camplyobacter jejuni
Shigella
Salmonella
Most common protozoa that causes Traveler’s diarrhea:
Giardia lamblia
Most likely time of onset for Traveler’s diarrhea by Entamoeba histolytica?
7-10 days
How to tell if its osmotic diarrhea or secretory diarrhea?
Osmotic diarrhea has a high osmotic gap
Secretory low osmotic gap
How to determine osmotic gap?
290- 2(K+ + Na+) compared to the blood plasma osmolarity
What E. coli strain causes secretory diarrhea?
ETEC
What E. coli strain causes kidney failure?
EHEC
What is gram negative spirilla?
Campylobacter
What do cytotoxins cause?
Inflammatory diarrhea
What do non-bacteria cause?
Osmotic diarrhea
What do enterotoxins cause?
Secretory diarrhea
What occurs in carbohydrate malabsorption?
Bacteria break it down into organic acids causing osmotic diarrhea
Why are diverticulum (dead end pouches) prone to infection?
Decreased peristalsis
Symptom difference in food poisoning and food associated illness?
Poisoning: vomiting
Associated: diarrhea
What worm can be found in sputum when coughing?
Ascaris
Strongyloides
What worm can cause anemia and is in clay?
Necator americanus (hookworm)
What parasite can cause hepatic cysts?
Entamoeba histolytica
Low risk countries:
U.S. Canada Australia New Zealand Japan Northern/Western Europe
Intermediate risk countries:
Eastern Europe
South Africa
Caribbean Islands
High risk countries:
Asia Middle East Africa Mexico Central/South America
What population must avoid use of BBS?
Aspirin allergy Renal insufficiency Gout Anticoagulants Probencid Methotrexate
