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Parasitology - Helminths (Nematodes) | MICB - Microbiology, Quizzes of Microbiology

Class: MICB - Microbiology; Subject: Microbiology; University: Edward Via Virginia College of Osteopathic Medicine; Term: Forever 1989;

Typology: Quizzes

2010/2011

Uploaded on 10/01/2011

kdoerr4054
kdoerr4054 🇺🇸

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TERM 1
Enterobius
vermicularis
DEFINITION 1
pinworm
adults in the cecum, appendix, colon
self-infection/auto-infection may occ ur
pruritus and anal irritation, especially a t night
diagnosis: observation of eggs or adults ; "scotch tape test"
clean house to remove eggs, heat b edclothes in hot dryer
treatment: Pyrantel, Albendazole or Mebendazole (treat whole
family)
TERM 2
Ascaris lumbricoides
DEFINITION 2
roundworm
small intestinal parasites
hepatotracheal migration
eggs deposited by females and passed in feces
larva migrates to liver and then to lung - coughed up,
swallowed, and matures
diagnosis: detection of eggs in feces
treatment: albendazole, mebendazole or pyrantel
TERM 3
Baylisascaris
procyonis
DEFINITION 3
larva found in tissue of brain
diagnostic: prominent lateral alae and excretory columns (in
brain)
raccoon deposits feces with eggs wh ich are ingested by
another animal (humans) - raccoon roundworm
accidental ingestion by humans
disease migrates to CNS, eyes and ot her organs
nausea, lethargy, hepatomegaly, com a, blindness
hunters, trappers, taxidermists at gre atest risk
no current treatment
TERM 4
Toxocara canis, T. cati
DEFINITION 4
animal ascarid that infects humans
eggs ingested by people
larvae migrate to tissues such as viscera or eye
Ocular Larva Migrans (OLM)
Visceral Larva Migrans (VLM)
diagnosis: serology
treatment: antihelmintics and anti-inflammatory agents
TERM 5
Trichuris trichiura
DEFINITION 5
whipworm
in cecum and lower intestines; no extraintestinal
migration
eggs passed in feces
asymptomatic if low worm burden
chronic diarrhea, anemia, growth retardation
diagnosis: football-shaped eggs with bipolar plugs
treatment: mebendazole, albendazole
pf3

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Enterobius

vermicularis

pinworm adults in the cecum, appendix, colon self-infection/auto-infection may occur pruritus and anal irritation, especially at night diagnosis: observation of eggs or adults; "scotch tape test" clean house to remove eggs, heat bedclothes in hot dryer treatment: Pyrantel, Albendazole or Mebendazole (treat whole family) TERM 2

Ascaris lumbricoides

DEFINITION 2 roundworm small intestinal parasites hepatotracheal migration eggs deposited by females and passed in feces larva migrates to liver and then to lung - coughed up, swallowed, and matures diagnosis: detection of eggs in feces treatment: albendazole, mebendazole or pyrantel TERM 3

Baylisascaris

procyonis

DEFINITION 3 larva found in tissue of brain diagnostic: prominent lateral alae and excretory columns (in brain) raccoon deposits feces with eggs which are ingested by another animal (humans) - raccoon roundworm accidental ingestion by humans disease migrates to CNS, eyes and other organs nausea, lethargy, hepatomegaly, coma, blindness hunters, trappers, taxidermists at greatest risk no current treatment TERM 4

Toxocara canis, T. cati

DEFINITION 4 animal ascarid that infects humans eggs ingested by people larvae migrate to tissues such as viscera or eye Ocular Larva Migrans (OLM) Visceral Larva Migrans (VLM) diagnosis: serology treatment: antihelmintics and anti-inflammatory agents TERM 5

Trichuris trichiura

DEFINITION 5 whipworm in cecum and lower intestines; no extraintestinal migration eggs passed in feces asymptomatic if low worm burden chronic diarrhea, anemia, growth retardation diagnosis: football-shaped eggs with bipolar plugs treatment: mebendazole, albendazole

Necator americanus Ancylostoma

duodenale

hookworms 4 cutting "teeth", 2 on each side larvae penetrates through skin diarrhea, abdominal pain "Ground itch" diagnosis: fecal exam for eggs treatment: mebendazole, pyrantel, albendazole TERM 7

Strongyloides stercoralis

DEFINITION 7 tiny worm in small intestine skin penetration, development of females in small intestine, production of eggs that hatch in intestinal tract autoinfection possible - larvae in gut penetrate mucosa and migrate to lungs to be coughed up and swallowed - leads to chronic infections hyperinfection occurs in immunosuppressed host light infections asymptomatic diagnosis: detection of larvae in feces treatment: ivermectin TERM 8

Trichinella spiralis

DEFINITION 8 trichinosis - larvae encyst in muscles of humans ingesting larvae in undercooked meat (pork) treatment: mebendazole to kill adult worms TERM 9

Brugia malayi and Wuchereria bancrofti

DEFINITION 9 filariasis mosquito vector adult worm lives in lymphatic system local inflammation, fibrosis, obstruction of lymph node offspring called microfilarie filarial fever and elephantiasis diagnosis: microfilaria in blood drawn at night TERM 10

Loa

Loa

DEFINITION 10 adults found in subcutaneous tissues as well as conjunctiva of the eye vector is fly of the genus Chrysops Calabar swelling results from adult worms