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Board Review - B - Microbiology > Parasitology I > Flashcards

Parasitology I Flashcards

1
Q

camper, bloating, flatulence, foul smelling, fatty diarrhea

A

giardia lamblia

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2
Q

transmission of giardia

A

cysts in water

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3
Q

tx of giardia

A

metrondiazole

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4
Q

anchovy paste exudate

A

entamoeba histolytica

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5
Q

bloody diarrhea, liver abscess, RUQ pain, flask shaped ulcer

A

entamoeba histolytica

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6
Q

entamoeba histolytica diagnosis

A

serology

trophozoites or cysts in stool

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7
Q

diagnosis giardia

A

cysts in stool

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8
Q

tx entamoeba histolytica

A

metrondiazole

iodoquinol - asymptomatic cyst passer

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9
Q

severe diarrhea in AIDS

A

cryptosporidium

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10
Q

oocysts on acid fast stain

A

diagnosis of cryptosporidium

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11
Q

tx of cryptosporidium in immunocompromised

A

nitazoxanide

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12
Q

triad of chorioretinitis, hydrocephalus, intracranial calcifications

A

congenital toxoplasma gondii

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13
Q

transmission of toxoplasma gondii

A

cysts in meat - MC

oocyst cat feces
cross placenta - pregnant women avoid cats

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14
Q

tx toxoplasma gondii

A

sulfadiazine + pyrimethamine

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15
Q

toxoplasma gondii reactivation in AIDS

A

ring enhancing lesion on CT/MRI

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16
Q

meningoencephalitis after swimming in freshwater lake

A

naegleria fowleri - rapidly fatal

enters via cribriform plate

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17
Q

diagnosis of naegleria fowleri

A

amoeba in spinal fluid

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18
Q

tx naegleri fowleri

A

amphotericin B

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19
Q

african sleeping sickness

A

trypanosoma brucei

enlarged lymph nodes, recurring fever (Ag variation), somnolence, coma

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20
Q

tansmission of trapansoma brucei

A

tsetse fly - painful bite

african sleeping sickness

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21
Q

tx of trypanosoma brucei

A

suramin - blood disease

melarsoprol - CNS disease

22
Q

72 hour cycle malaria

A

plasmodium malariae

23
Q

48 hour cycle malaria

-fever first and third day

A

plasmodium vivax/ovale

24
Q

irregular fever pattern, severe malaria

A

plasmodium falciprum

25
Q

transmission of malaria

A

anopheles mosquito

26
Q

schuffer stippling

A

red granules in RBC cytoplasm

-with plasmodium vivax/ovale

27
Q

diagnosis malaria

A

blood smear - trophozoite ring form in RBC

28
Q

tx malaria

A

chloroquine
-blocks plasmodium heme polymerase

resistant - use mefloquin or atovaquone/proguanil

29
Q

tx life threatening malaria

A

IV quinidine or artesunate (test for G6PD deficient)

30
Q

tx plasmodium vivax/ovale

A

add primaquine for hypnozoite (test for G6PD deficient)

31
Q

fever, hemolytic anemia, northeast US, ixodes tick

A

babesiosis

32
Q

coinfection with lyme disease

A

babesiosis
-same vector as borrelia burdorferi (lyme)

ixodes tick

33
Q

tx babesiosis

A

atovaquone and azithromycin

34
Q

chagas disease

A

trypanosoma cruzi

dilated cardiomyopathy with apical atrophy, megacolon, megaesophagus

predom in south america

35
Q

acute stage of chagas disease

A

unilateral periorbital swelling - romana sign

36
Q

transmission of trypanosoma cruzi

A

reduviid bug - kissing bug
-feces

painless bite

37
Q

tx of chagas

A

benznidazole

nifurtimox

38
Q

leishmania donovani

A

kala-azar

spiking fever
hepatosplenomegaly
pancytopenia

39
Q

leshmaniasis transmission

40
Q

tx of leisymaniasis

A

amphotericin B

sodium stibogluconate

41
Q

trichomonas vaginalis

A

vaginitis
-foul-smelling, green discharge, itch burning

motile trophozoite on wet mount
-strawberry cervix

42
Q

strawberry cervix

A

trichomonas vaginalis

43
Q

tx for trichomonas vaginalis

A

metrondiazole for pt and partner

44
Q

pinworm

A

enterobius vermicularis

anal pruritis

45
Q

diagnosis of pinworm

A

scotch tape test

46
Q

tx pinworm

A

bendazoles

47
Q

giant roundworm

A

ascaris lumbricoides
-fecal oral

eggs visible on fecal microscopy

48
Q

possible obstruction of ileocecal valve

A

with ascaris lumbricoides

-giant roundworm

49
Q

tx of giant roundworm

A

bendazoles

50
Q

intestinal infection - vomiting, diarrhea, epigastric pain - like peptic ulcer

A

stronyloides stercoralis

larvae in soil penetrate skin

51
Q

tx of strongyloides stercoralis

A

ivermectin

bendazoles

Board Review - B - Microbiology (16 decks)

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