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15 Cards in this Set
- Front
- Back
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morphology of ascaris lumbricoides
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white or pink worm
10-35 cm long as thick as a pencil |
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Life cycle of ascaris lumbricoides
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eggs in soil infective at 21 days
eaten by man larvae in intestine enter circulation --> R heart --> lungs --> breaks out of capillaries --> coughed up --> swallowed --> matures in small int |
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when is oviposition stage reached in ascaris lumbricoides?
how long do they live? |
8 weeks
18 months |
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sx of ascaris lumbricoides
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larval transit through lungs --> eosinophilic pneumonitis (loeffler's)
vague abdominal pain some protein malnutrition mechanical intestinal obstruction obstructive appendicitis migration |
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where cna ascaris lumbricoides migrate
why do they migrate? |
liver
peritoneum retrograde through mouth, nose, anus migrate during fever, pregnancy, noxious drugs |
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dx of ascaris lumbricoides
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stool exam or Xray
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tx of ascaris lumbricoides
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mebendazole 100 bid x 5 days
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Latin name for Whipworm
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Trichuris Trichiura
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Morphology of whipworm
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whip shaped worm, 30-50 mm
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life cycle of whipworm
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egg in soil, infective in 1 month, eaten by man --> larvae emerge in small intestines
penetrates into intestinal villi 3-10 days --> returns to lumen and migrates to cecum |
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when does whipworm mature into ovipositing adult?
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30-90 days after ingestion
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dx of whipworm
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egg in stool
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sx of whipworm
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usually asymptomatic, may mimic chronic appendicitis
if heavily infected, may have anemia, blood streaked diarrhea abdominal pain, N/V weight loss and rectal prolapse |
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tx of whipworm
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mebendazole 100 bid x 3 dyas
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types of hookworm
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necator americanus
ancylostoma duodenale |
