Micro GI parasites Flashcards
forms cysts of up to 4 nuclei
entaboeba histolytica or giardia
entamoeba histolytica causes
amoebic dysentary
sx of emobic dystentary
mucoid bloody diarrhea. Lower GI pain w nausea
flask-like lesion
entaboeba histolytica
can form extra-intestinal abcesses
entaboeba histolytica
most common site of entaboeba histolytica abcesses
liver
resivoir of entaboeba histolytica
asymptomatic carrier people
dx of entaboeba histolytica
hx of contact with potentially contaminated food/water
ID of cysts or thophozites in stool
sigmoidoscopy
treatment of entaboeba histolytica
metronidazole
how to avoid protazoa while travelling
no fresh fruit/veg and bottled water
enterobious causes
pinworm
how pinworms enter the body
ingestion of the fertilzed ovum
pinworms hatch in the…
SI
location of pinworm eggs
perianal folds
mode of autoinfection of pinworm
ova hatch in perianal folds and travel back into rectum and colon
most common helminth infection in US
pinworm
spread of pinworm
contact with ova-laden fomites or person to person contact
sx of pinworm
itchi anus
cranky, tired kids
risk of pinworm infection
scratching may lead to bacterial infection
vagina granulomas
bowel penetration and granulomas
dx of pinworm
hx and contact with infected people
scotch tape test
treatment of pinworm
pyrentel pamoate (all close contacts need to be treated) serious cleaning and hygeine
how ascaris gets into the person
injestion of fertilized ovum - usually unwashed veg
where ascarias goes once hatched
penetrate mucosal gut, get into circulation, go to lungs, coughed up into pharynx, swollowed - travel to SI and mature. mate and eggs are deposited with stool
common areas of ascaris
southern US
can cause pneumonitis, and asthma-like sx in heavy infection
ascaris
can cause bile blockage, gut perforation, and possible intestinal blockage
ascaris
dx of ascaris
ova in stool
DOC for ascaris
-azoles
causes whipworm
tricuris tricuria
how whipworm enters the body
ingestion of ova
burrows into mucosa and leaves posterior exposed into lumen
whipworm
lower abdominal pain, bloddy diarrhea,eosinophilia, possible recal prolapse
whipworm
can cause rectal prolapse
whipworm
can cause anemia in heavy infections
whipworm
football shaped ova in stool
whipworm
how hookwrom enters the body
larvae in soil enters feet
travel of hookworm
larvae enter feet, migrate to lung, coughed up to trachea and swallowed - developed into maturity in SI
necatror americanus
hookworm
transmission from “night soil”
hookworm
itchy feet, possible lung issues, GI issues, and anemia
hookworm
can cause an asthma attack in repeated infections
hookworm
can cause chronic anemia, emaciation, heart problems and possibly lethal
hookworm
dx of hookworm
ID of ova in stool
tear droped protozoa with flagella
giardia
attaches to SI wall with suckers
giardia
resiovoir of giardia
beaver and muskrat
can be transmitted in day care centers
giardia
mild to severe GI upset with fatty diarrhea
giardia
zoonisis spread by animal resivirs in drinking eater
crypto
problem in immunocompromised
crypto
stains positive with acid fast stain
crypto
strongylodies stercoralis causes
threadworm
can enter the infect via direct development, autoinfection or free living
threadworm
worm simiar to hookworm that is id’d by larvea in stool
threadworm
infectino aquired by ingestion of undercooked fish
broadfish tapeworm
diphyllobothrium latum
broadfish tapeworm
larval stage mediated by free-floating crustatean
broadfish tapeworm
resivoir for broadfish tapeworm
fish eating mammals
can consume B12, leading to pernicous anemia
broadfish tapewrm
doc for tapeworm
praziquantel
animals that can transmitt tapeworm to humans by eating
fish, pork, beef
taenia solium
cysticerosis
can form cysts in muscle, brain, eye and lung
cysticoerosis
way cysticoerosis is transmitted
eating infected raw fish
sx occur greatest upon death of parasite
cysticoerosis
