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Micro Exam III > Parasitic Infections of GI II > Flashcards

Parasitic Infections of GI II Flashcards

1
Q

Nematodes - roundworms

A

non-segmented bodies
separate sexes
complete digestive system

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2
Q

Cestodes - tapeworms

A

segmented bodies
hermaphroditic
absorb nutrients

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3
Q

Trematodes-flukes

A

non-segmented (leaf like)
hermaphroditic
primitive gut

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4
Q

What are the most common parasitic helminths

A

nematodes

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5
Q

Who are most likely to develop symptomatic nematodes infections

A

children

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6
Q

Where are hematode infections more common in the US

A

SE

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7
Q

What is the life cycle of nematodes

A

egg, multiple larval, adult stages

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8
Q

What is enterobius vermicularis

A

pinworm

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9
Q

How is enterobius vermicularis spread

A

fecal oral - ingestion of eggs
reinfection common within families
only transmitted human to human

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10
Q

Symptomatic enterobius vermiculuaris

A

perianal itching, secondary bacterial infection

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11
Q

How do you diagnosis enterobius vermicularis

A

identify eggs in perianal region - scotch tape test

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12
Q

How do you treat enterobius vermicularis

A

anti-helminthic compounds - mebendazole, pyrantel pamoaste

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13
Q

What is trichuris trichiura

A

whipworm

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14
Q

Trichuris trichiura transmission

A

fecal oral, contaminated soil

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15
Q

What is the definition of symptomatic trichuris trichiura infection

A

> 200 adult worms

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16
Q

Symptoms of trichuris trichiura

A

rectal prolapse in children - bloody mucus containing diarrhea

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17
Q

How do you diagnosis trichuris trichiura

A

identify eggs in stool

18
Q

Ascaris lumbircoides

A

largest of intestinal roundworms

19
Q

Transmission of ascaris lumbircoides

A

fecal-oral, contaminated soil

eggs need to develop in soil

20
Q

What is the resevoir for ascaris lumbricoides

A

humans

21
Q

Pulmonary ascaris lumbricoides

A

mild cough, pneumonitis

parasite antigens may be highly allergenic

22
Q

How do you diagnosis ascaris lumbricoides

A

eggs in stool, larvae or esoinophils in sputum

23
Q

2 types of hookworm

A

nacator amicanus

ancylostoma duodenale

24
Q

Hookworm is the major cause of ______ in _____ and _______

A

anemia
children
pregnant women

25
Q

Transmission of hookworm

A

larvae from fecal contaminated soil penetrate intact skin

26
Q

What happens if you come in contact with dog or cat hookworm

A

cutaneous larval migrans

27
Q

Symptoms of hookwork

A

iron deficiency anemia

fatigue, external dyspnea, koilonychias, pale sclera, heart murmurs

28
Q

What type of hookworm is more pathogenic

A

ancylostoma

29
Q

How do you prevent hookworm

A

sanitation, wear shoes

30
Q

What is unique about stronglyoides sterocoralis repro

A

doesn’t need to reproduce in humans

31
Q

Stronglyoides sterocoralis

A

smallest of intestinal nemotodes

32
Q

How is strongyloides stercoralis transmitted

A

penetration of skin by infectious larvae

33
Q

non-specific symptoms of strongyloiodes sterocoalis

A

epigastric pain & tenderness, bloating, heartburn

34
Q

Hyperinfection of strongyloides stercoralis

A

worsening of diarrhea and pulmonary symptoms

35
Q

Disseminated infection of strongyloidess stercoralis

A

goes into CNS, peritoneum, liver, and kidney

36
Q

Who gets disseminated strongyloidiasis

A

people undergoing immunosuppressive therapy

37
Q

How do you prevent stronglyoidiasis

A

sanitation, hygiene

wear shoes

38
Q

Enterobius eggs

A

flat on one side

39
Q

Trichuris eggs

A

lemon/barrel shaped

40
Q

Ascaris lumbriocoides eggs

A

lumpy bumpy

41
Q

Hookworm eggs

A

boring/plain

Micro Exam III (9 decks)

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