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13 Cards in this Set
- Front
- Back
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Strongyloides |
Itchy Cough Eosinophil aggregation Lifetime: 1. Infect through skin 2. Lymph to lung to throat to sm intestine 3. Larvae pass in stool |
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Hookworm |
Causes profound anemia and malnutrition Super itchy when first infected Tropical and hot areas Lifecycle: 1. Enters bare skin (foot) 2. Lymphatic to lungs to throat to sm intestine 3. Adult worms lay eggs, which pass into stool |
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Ascaris (Roundworm) |
Block organs/vessels Tropical Really big Lifecycle: 1. Eggs are orally ingested 2. Larva invades intestinal wall, then lung to throat to sm intest 3. Eggs get into stool 4. Fertilizers contaminate plants and animals |
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Pinworm |
Very itchy (anal area) Larvae visible on anal area Lifecycle: 1. Ingest eggs 2. Adult worm lives in cecum of human 3. At night, worms travel to anus to lay eggs, then crawl back in |
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Trichinella |
Undercooked meat! Very ill (fever, aches, puffy eyelids) High eosinophil L: 1. Organism lives in muscle and gets ingested 2. Larva migrates to tissues - you feel sick 3. Larva deposits in muscle and stays as cyst |
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Intestinal Nematodes |
(PHATS) Trichinosis Pinworm Ascaris Hookworm Strongylides |
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Intestinal Nematode drugs |
Mebendazole Albendazole |
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Filariasis |
Elaphantiasis - lymph node scarring Get a blood sample at night L: 1. Mosquito bites and injects microfilaria 2. Microfilaria go to lymph nodes 3. Lay eggs, grow into adults 4. Adults get into bloodstream |
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Onchocera |
"River blindness" - scarring of cornea Breed in rapid water in Africa and Latin America
L: 1. Black fly bite and larvae penetrate 2. Adult worm develops in skin 3. Produce microfilaria that travels to eyes and other connective tissue |
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Schistosomiasis |
Liver scarring - disdended abdomen Swimmer's itch (happens to birds as well) L: (requires snails and fresh water) 1. Cercariae invade intact human skin 2. Goes to portal system (liver and intest) 3. Lay eggs, which pass into exretia |
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Liver flukes |
Obstruction of biliary tree Look at stool to try and see eggs L: 1. Undercooked fish ingested (cysts) 2. Maturation inside, migration to biliary duct 3. Eggs pass in feces 4. Must mature in snails and fish |
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Taenia Beef and Pork Tapeworms |
Latin America Cysts in body, incl. brain (neurocysticercosis) Usually asymptomatic until worm dies Can be extremely long L: 1. Ingest contaminated pork or beef 2. Cyst released and become tapeworm 3. Eggs released in feces OR 4. Humans consume pork tapeworm egg 5. Larva travels to brain |
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Echinococcus |
Liver cysts (hydatid cysts) L: 1. Worm lives in dogs and sheep 2. If humans interact with either, the can digest the worm 3. Worm travels to liver |
