Parasitology 1 Flashcards
Rx for Enterobius vermicularis?
2 doses pyrantel pamoate, 2 wk apart
this is pinworm: the itchy bumhole bug
Lifecycle of Enterobius vermicularis?
eggs are eatin, hatch into larvae in small intestine, mature in cecum.
female migrates out to perianal area at night to lay eggs. it’s itchy, we scratch it and get eggs under fingernails and spread it
Soil transmitted helminths?
HAT
hookworm (Necator americanas)
ascaris lumbricoides
Trichuriasis (whipworm)
Rx for Trichuris trichiura?
Albendazole or mebendazole
Difference in worldwide distribution of Necator americanus vs. Ancylostoma duodenale?
(both are hookworms… feet -> lung -> swallow and into gut)
Necator “americanus” is located in new world americas, Africa, southern asia, australia
Ancylostoma is located in “old world”: Mediterranean, north Asia
Rx for hookworms?
Mebendazole
(Necator americanus, Ancylostoma duodenale)
(life cycle: feet -> lungs -> cough up and swallow -> intestines -> shit out)
Parasite that is important cause of iron deficiency anemia?
hookworm
(Necator americanus and Ancylostoma duodenale. Rx: mebendazole. life cycle: feet -> lungs -> cough up and swallow -> shit out)
Rx for Strongyloides?
ivermectin or albendazole
Name the bug that causes elephantiasis?
Wuchereria bancrofti
Rx for Wuchereria bancrofti infection?
Diethylcarbamazine
Wuchereria causes elephantiasis
What is an intermediate host?
host in which development occurs, possibly asexual reproduction, but not sexual reproduction
Worm that causes pancreatitis?
ascaris lumcricoides
Worm that causes bowel ischemia and bowl perforation?
ascaris lumbricoides
Organism that causes visceral larva migrans?
Toxocari canis and t. cati (humans are accidental host)
Most common presentation of Toxocara?
a child presents to a pediatrician and has eosinophilia -> referred to specialist on suspicion of neoplasm.
(this is the presentation and bug causing visceral larva migrans)
