Parasitology I

Question 1

camper, bloating, flatulence, foul smelling, fatty diarrhea

Answer 1

giardia lamblia

Question 2

transmission of giardia

Answer 2

cysts in water

Question 3

tx of giardia

Answer 3

metrondiazole

Question 4

anchovy paste exudate

Answer 4

entamoeba histolytica

Question 5

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

Answer 5

entamoeba histolytica

Question 6

entamoeba histolytica diagnosis

Answer 6

serology

trophozoites or cysts in stool

Question 7

diagnosis giardia

Answer 7

cysts in stool

Question 8

tx entamoeba histolytica

Answer 8

metrondiazole

iodoquinol - asymptomatic cyst passer

Question 9

severe diarrhea in AIDS

Answer 9

cryptosporidium

Question 10

oocysts on acid fast stain

Answer 10

diagnosis of cryptosporidium

Question 11

tx of cryptosporidium in immunocompromised

Answer 11

nitazoxanide

Question 12

triad of chorioretinitis, hydrocephalus, intracranial calcifications

Answer 12

congenital toxoplasma gondii

Question 13

transmission of toxoplasma gondii

Answer 13

cysts in meat - MC

oocyst cat feces
cross placenta - pregnant women avoid cats

Question 14

tx toxoplasma gondii

Answer 14

sulfadiazine + pyrimethamine

Question 15

toxoplasma gondii reactivation in AIDS

Answer 15

ring enhancing lesion on CT/MRI

Question 16

meningoencephalitis after swimming in freshwater lake

Answer 16

naegleria fowleri - rapidly fatal

enters via cribriform plate

Question 17

diagnosis of naegleria fowleri

Answer 17

amoeba in spinal fluid

Question 18

tx naegleri fowleri

Answer 18

amphotericin B

Question 19

african sleeping sickness

Answer 19

trypanosoma brucei

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

Question 20

tansmission of trapansoma brucei

Answer 20

tsetse fly - painful bite

african sleeping sickness

Question 21

tx of trypanosoma brucei

Answer 21

suramin - blood disease

melarsoprol - CNS disease

Question 22

72 hour cycle malaria

Answer 22

plasmodium malariae

Question 23

48 hour cycle malaria

-fever first and third day

Answer 23

plasmodium vivax/ovale

Question 24

irregular fever pattern, severe malaria

Answer 24

plasmodium falciprum

Question 25

transmission of malaria

Answer 25

anopheles mosquito

Question 26

schuffer stippling

Answer 26

red granules in RBC cytoplasm | -with plasmodium vivax/ovale

Question 27

diagnosis malaria

Answer 27

blood smear - trophozoite ring form in RBC

Question 28

tx malaria

Answer 28

chloroquine -blocks plasmodium heme polymerase resistant - use mefloquin or atovaquone/proguanil

Question 29

tx life threatening malaria

Answer 29

IV quinidine or artesunate (test for G6PD deficient)

Question 30

tx plasmodium vivax/ovale

Answer 30

add primaquine for hypnozoite (test for G6PD deficient)

Question 31

fever, hemolytic anemia, northeast US, ixodes tick

Answer 31

babesiosis

Question 32

coinfection with lyme disease

Answer 32

babesiosis -same vector as borrelia burdorferi (lyme) ixodes tick

Question 33

tx babesiosis

Answer 33

atovaquone and azithromycin

Question 34

chagas disease

Answer 34

trypanosoma cruzi dilated cardiomyopathy with apical atrophy, megacolon, megaesophagus predom in south america

Question 35

acute stage of chagas disease

Answer 35

unilateral periorbital swelling - romana sign

Question 36

transmission of trypanosoma cruzi

Answer 36

reduviid bug - kissing bug -feces painless bite

Question 37

tx of chagas

Answer 37

benznidazole | nifurtimox

Question 38

leishmania donovani

Answer 38

kala-azar spiking fever hepatosplenomegaly pancytopenia

Question 39

leshmaniasis transmission

Answer 39

sandfly

Question 40

tx of leisymaniasis

Answer 40

amphotericin B | sodium stibogluconate

Question 41

trichomonas vaginalis

Answer 41

vaginitis -foul-smelling, green discharge, itch burning motile trophozoite on wet mount -strawberry cervix

Question 42

strawberry cervix

Answer 42

trichomonas vaginalis

Question 43

tx for trichomonas vaginalis

Answer 43

metrondiazole for pt and partner

Question 44

pinworm

Answer 44

enterobius vermicularis anal pruritis

Question 45

diagnosis of pinworm

Answer 45

scotch tape test

Question 46

tx pinworm

Answer 46

bendazoles

Question 47

giant roundworm

Answer 47

ascaris lumbricoides -fecal oral eggs visible on fecal microscopy

Question 48

possible obstruction of ileocecal valve

Answer 48

with ascaris lumbricoides | -giant roundworm

Question 49

tx of giant roundworm

Answer 49

bendazoles

Question 50

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

Answer 50

stronyloides stercoralis larvae in soil penetrate skin

Question 51

tx of strongyloides stercoralis

Answer 51

ivermectin | bendazoles