ID: Protozoal & Helminth Infections Flashcards Preview

Unit 6: Pathology > ID: Protozoal & Helminth Infections > Flashcards

Flashcards in ID: Protozoal & Helminth Infections Deck (30):
1

what causes the recurrent paroxysm fever/chlils seen in malaria

rupture of infected RBCs cause the release of pyogenes

2

what type of malaria causes the most severe disease

P. falciparum

3

what is the most important virulence of p. falciparum

organism alters flow characteristics and adhesive properties of infected RBCs which adhere to endothelial cells of small blood vessels, obstruct blood vessels and cause tissue ischemia

4

what organism

found in cat liter because cats are the final host

toxoplasmosis


(another reason to never have a cat)

5

what protozoa

produces flask/bottle neck ulcers

entamoeba histolytica

6

what protozoa

can produce liver abscesses

entamoeba histolytica

7

what transmits American trypanosemiasis

triatominae bug=reduvid bug=kissing bug

8

what transmits african trypanosomiasis (sleeping sickness)

tsetse fly

9

what african trypanosomiasis:

infection will be chronic lasting longer than 1 year

T. bruci gambienae

10

what african trypanosomiasis:

infection rapidly progresses and will kill you in 3-6 months

T. brucei rhodesiense

11

what is the most destructive helminthic infection? why?

shistosomiasis because of the granulomatous response it causes

12

what does W. bancrofti, B. Malayi and B. timori cause (all the same disease)

elephantiasis
(lymphatic filariasis)

13

what is the causative agent in river blindness

onchocerca volvulus

14

what transmits onchocerciasis (river blindness) to humans

the black fly

15

what is the most common helminth infection in humans

ascaroasus

16

which of the intestinal nematodes can you see autoinfection with

strongyloidiasis (threadworm)

17

which of the schistosomas cause the bladder infection (which can lead to cancer)

S. haematobium

18

which of the schistosomas cause the liver infection ("piprestream") fibrosis seen in liver)


can see portal HTN

S. mansoni
S. japonicum

19

what disease does Chinese liver fluke cause? what is a consequence of this disease?

clonorchus

biliary obstruction

20

what tapeworm (cestode) can cause b12 deficiency

Diphyllobethrium latum
fish tape worm

21

what is the classic triad seen in toxoplasmosis

1. chorioretinitis
2. hydrocephalus
3. intracranial calcifications

22

how long is the fever cycle in P. vivax and P. ovale

48 hours

23

how long is the fever cycle in P. malariae

72 hours

24

what protozoa


transmitted by same tick as lyme (ixodes tick) and causes fever and hemolytic anemia

babesia

25

what is romana sign and when is it seen?

unilateral periorbial swelling indicating an acute infection with chagas disease

26

what are the 3 presenting signs of visceral leishmaniasis (kala azar)

spiking fevers
hepatosplenomegaly
pancytopenia

27

what protozoa

foul smelling greenish discharge; itchy and burning that was acquired from bumping uglies last weekend

trichomonas vaginalis

28

what parasite can cause brain cysts and seizure

"adult onset epilepsy"

T. solium (pork tapeworm)

29

what parasite causes myalgias and periorbital edema

trichinella spiralis

30

what parasite

"perianal pruitis"

enterobius