Flashcards in Gastrointestinal Infections Part II Deck (29)
What virus causes the most severe diarrheal illnesses requiring hospitalization of infants and young children?
What do rotaviruses cause?
Inadequate capacity to absorb fluid
Inadequate secretion of digestive enzymes
Are rotaviruses enveloped?
No they wouldn't survive the bile
How can rotavirus be diagnosed?
Viral RNA and Ag can be detected in feces
What do Norwalk viruses include?
What is more infectious: vomiting or diarrhea?
Astrovirdiae are similar to what?
What can entamoeba histolytica cause?
Ulcers due to pore-forming cytotoxins
Liver and lung abscesses
Where does entamoeba histolytica infect?
What does entamoeba histolytica form?
Treatment of amoebiasis?
Microscopic examination of stool for cysts
Giardia intestinalis produces what?
Foul smelling stool with excessive gas
What are nematodes?
What do ascaris worms do?
Move around the body
What can ascaris cause?
Urticaria (hives) and eosinophilia (increased eosinophils): Loeffler's syndrome
When can strongyloidiasis be fatal?
When it disseminates in immunosuppressed patients causing spongyloidiasis
What are cestodes?
What are cysticercus?
A tapeworm larva
Where are Taenia saginata cysticercus found?
What do damaged hepatocytes spill?
Aminotransferases (ALT, AST)
What is important in diagnosing viral infections?
Hepatitis A is a member of what family?
Picornaviridae with positive sense ssRNA
What is the diagnosis of Hepatitis A?
Why is anti-HAV IgM more diagnostic than IgG?
IgM is only elevated during times of infection so if it is elevated then there was a recent infection or ongoing infection
What family does Hepatitis E belong to?
Diagnosis for Hepatitis E?
Antibodies or RNA
Hepatitis B is the member of what family?