Flashcards in GI Parasites Deck (39)
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1
A parasite that lives on the external surface of another living organism
ectoparasite
2
Organism in which the adult or sexually mature parasite live
Definitive host
3
Organism in which the parasite only lives during a period of its development
Intermediate host
4
Causes giardiasis from infected water
Giardia lamblia
5
Diagnostic: cysts in stool
Giardia lamblia
6
Opportunistic cryptosporidiosis from contaminated water
Cryptosporidium parvum
7
Obligate intracellular parasite
Cryptosporidium parvum
8
40% of cases have a recurrence of symptoms after initial resolution, then become chronic
Cryptosporidium parvum
9
Seen using a modified acid-fast stain
Cryptosporidium parvum
10
Person-to-person transmission because oocysts are immature
Chryptosporidium parvum
11
Parasitizes the small intestinal mucosa causing diarrhea for several weeks
Cyclospora cayetanensis
12
Most common from eating contaminated foods
Cyclospora cayetanensis
13
Seen using a modified acid-fast stain, larger than C parvum
Cyclospora cayetanensis
14
Causes a flask shaped ulcer
Entamoeba histolytica
15
Can cause liver abscess
Entamoeba histolytica
16
Frequent tenesmus and amoebic dysentery
Entamoeba histolytica
17
High worm burden causes eosinophilia
Ascaris lumbricoides
18
Progresses in the lungs and moves to intestine
Ascaris lumbricoides
19
Includes pulmonary systems
Ascaris lumbricoides
20
Prevalent in cold and temperate climates
Enterobius vermicularis
21
Most common helminth infection in the US
Enterobius vermicularis
22
Mature very fast, 4-6 hours
Enterobius vermicularis
23
Major cause of anemia in the tropics
Hookworm
24
3 species of hookworm
Necator americanus, Acyclostoma duodenale and celanicum
25
Nematode infection of the immunosuppressed
Strongyloides stercoralis
26
Burrows into intestinal wall or perianal skin
Strongyloides stercoralis
27
Extremely high infection rate in southeastern US
Trichuris trichiura
28
Can cause a prolapse of the rectum
Trichuris trichiura
29
Cestode found in pork
Taenia solium
30
