• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/22

Click to flip

22 Cards in this Set

  • Front
  • Back
What is the definition of a Nematode?
Unsegmented worms with elongated rounded body pointed at both ends
Are Nematodes free living or parasitic?
both
What unique anatomic structures does the Nematode possess?
A mouth, gut, and anus
What is the most common helminth in the world that is also a Nematode?
Ascariasis
What is the most common helminth in the US that is also a Nematode?
pinworm
What are the 4 intestinal Nematodes?
Strongyloidiasis, Ascariasis, Hookworm, Enterobiases
What are the names of the Cutaneous larvae migrans?
Toxocariasis and Trichinosis
What are Cutaneous larvae migrans considered to be?
Extraintestinal nematodes
What is the most common strongyloidaisis species worldwide?
Strongyloides stercoralis
Where does S. Stercralis exist?
in tropical, subtropical, and temperate areas including the Southern US (more frequently in rural areas)
In what other settings is Strongyloidiasis found?
In instituional settings and in lower socio-economic groups
How are humans infected?
Larvae invades bare feet from the soil, and travels via blood to lungs or trachea, then is swallowed. It attaches to intestinal wall, where it matures and lays eggs
How do humans autoinfect themselves?
Fecal - oral (some turn into larvae and infect the colon, where they leave the colon, headed for the lungs to re-start the same cycle)
Are all patients symptomatic?
1/3 are not
What is the name of the the syndrome associated with pulmonary migration?
Loeffler's syndrome
When is Eosinophilia present?
During the acute and chronic phases; absent with dissemination
Are there any other sxs present besides the common ones associated with a bowel infection?
Yes; Dermatologic, there is an urticarial rash associated
How is Strongyloids diagnosed?
Microscopic Identification of larvae from stool or duodenal aspirated fluid.
Do you dismiss the diagnosis if no larvae is identified the 1st time?
No, serial samples may be required
What is the recommended diagnostic test?
Enzyme immunoassay
What is the recommended treatment?
Ivermectin; and Albendazole
Catch phrases in case study
1. Worm found in diaper, 2. fever, irratibility, and loss of appetite, 3. vacation in Costa Rica