MICR 2533 Nematodes - Nematodes Name Enterobius...

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Nematodes Intestinal Roundworms (If the question asks where it is found in the body, this classification will narrow it down for you) Name Common Name Disease form and location Human infection Disease manifestation Enterobius Vermicularis Pinworm Adult worms in Large Intestine Infective eggs are discharged by the pregnant female on the perianal skin; eggs are transferred from hand to mouth after itching Perianal itching caused by local irritation from scratching Trichuris Trichiura Whipworm Adult worms in Large Intestine Ingestion of eggs containing mature larvae from infected soil or food Light infection-asymptomatic Heave infection- enteritis, diarrhea, rectal prolapse Trichinela Spiralis Trichina worm Adults in small intestine larvae encyst in striated muscle Ingestion of encysted larva in undercooked meat ( pork or bear) Gastric distress; fever, eye edema, acute muscle pain, eosinophilia DX: encysted larvae in muscle biopsy Ascaris Lumbricoides Adult worms in Large Intestine Ingestion of eggs containing mature larvae from infected soil or food Light infection is asymptomatic Heavy infection—pneumonia, diarrhea and bowel or appendix obstruction Most common nematode infection in the world Necator Americanus New World Hookworm Ground Itch Larval migration; Adults in small intestine Eggs shed in feces, mature in soil, larvae hatch and mature Infective (filariform) larvae penetrate host skin , esp. feet Repeated infection results in larval dermatitis with later pulmonary symptoms Microcytic hypochromic anemia from chronic blood loss if heavy infection and poor diet Most common nematode infection in the US Ancylostoma duodenale Old World Hookworm Small Intestine (duodenum) As Above As Above Ancylostoma Caninum Dog Hookworm Creeping Eruption infection of humans is from penetration of the skin by filariform larvae Allergic response to the migration of larvae under the skin, Red, itchy tracts, usually on legs It never enters the circulatory system, just wanders around between the dermis and epidermis Ancylostoma Braziliense Dog and Cat As Above As Above As Above Strongyloides Stercoralis Threadworm Larval migration; pulmonary signs Adult in small intestine Immature (rhabditiform) larvae are shed in feces, develop in soil Infective (filariform) larvae (third stage) penetrate host skin , especially feet
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This note was uploaded on 11/22/2011 for the course MICR 2533 taught by Professor Shahlaabghari during the Winter '11 term at Life Chiropractic College West.

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MICR 2533 Nematodes - Nematodes Name Enterobius...

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