Ubc Hdi Parasitology

Front 1

What are the 3 classes of worms

Back 1

cestodes (flatworms/tapeworms)
nematodes (roundworms)
trematodes (flukes)

Front 2

What are 4 classes of protozoa

Back 2

amoeba
ciliates
flagellates
sporozoans

Front 3

What are the motility mechanisms for the 4 types of protozoa

Back 3

amoeba- pseudopods
ciliates- cilia
flagellates- flagella
sporozoans- no motion

Front 4

Describe the shape of nematodes

Back 4

round, unsegmented bilateral symmetry

female bigger than male

Front 5

Describe the shape of cestodes

Back 5

tapeworms, flat

scolex for attachement, segments (proglottids), hermaphroditic segments

Front 6

Describe the shape of trematodes

Back 6

flukes, dosoventrally flattened
hermaphroditic (females live within males)

Front 7

What form of malaria do mosquitos ingest? inject?

Back 7

ingest gametocytes

inject sporozoites

Front 8

which malaria types have a dormant stage in the liver.

what are these dormant particles called

Back 8

vivax/ovale

hypnozoites

Front 9

what are the malaria forms that mature in RBCs called?

in liver cells?

in mosquitos?

Back 9

liver- sporozoites -->schizonts

RBC- trophozoites--->shizont

mosquito- gametocytes-->oocyst-->sporozoites

Front 10

What are the fever cycles of

vivax/ovale
malaria
falciparum

Back 10

vivax/ovale : 2 days
malaria : 72 hours
falciparum: continuous

Front 11

what special treatments do you need for vivax/ovale

Back 11

primaquine for hypnozoites

Front 12

What is host part the life cycle of ascaris?

Back 12

intestinal nematode:

ingest --> gut -->lungs

Front 13

what form of giardia is usually ingested? where can it survive?

Back 13

usually cyst form, very hardy

Front 14

what normally causes acute travellers diarrhea?

Chronic?

Back 14

acute- bacterial and viral

chronic- entamoeba, giardia

Front 15

What % of diarrhea is caused by helminths

Back 15

0%!

Front 16

Traveller's fever:

how can you differentiate between typhoid, malaria, hep and dengue

Back 16

typhoid- long term, usually with gi symptoms

malaria- cyclic fever

hep- do serology testing

dengue- maculopapular rash

Front 17

in terms of types of RBCs infected, plasmodium species affect...

Back 17

vivax/ovale -young RBC
falciparum- all RBC (severe)
malriae- old RBC

Front 18

which malaria can cause cerebral malaria? And how does it do this?

Back 18

falciparum, RBCs stick to each other

Front 19

infection with which malaria is a medical emergency

Back 19

falciparum

Front 20

Which of the parasites we know are sporozoites?

Back 20

plasmodium
toxo
cryptosporidium

Front 21

Which of the parasites we know are flagellates

Back 21

giardia

Front 22

which of the parasites we know are amoeba

Back 22

entamoeba

Front 23

How is toxoplasa transmitted

Back 23

cat feces (cysts)
meat (dormant invasive form)

Front 24

What are the symptoms of toxo in immunocompetent host

Back 24

asymptomatic -> mono like symptoms. Lies dormant in tissues

Front 25

What are symptoms in congenital toxo

Back 25

only if acute infection in mother (pregnant ladies should not change cat litter).

Chorioretinitis, blindness, seizures, mental problems

Front 26

What are symptoms of toxo in immunocompromised hosts

Back 26

dormant cysts rupture -->CNS lesions, pneumonia, chorioretinitis

most common cause of encephalitis in HIV patients

Front 27

What are the clinical syndromes associated with entamoeba histolytica

Back 27

usually carrier, asymptomatic

diarrhea (bloody, dysentary) in some (intestinal amoebiasis)
amoebic abscess in liver (invasive amoebiasis)

Front 28

What kind of diarrhea do you get from cryptosporidium parvum? in AIDS?

Back 28

watery, self limited

main cause of watery diarrhea in AIDS

Front 29

What is the only cestode we have learned?

How do you get it?

What diseases does it cause?

Back 29

Taenia solium (cisticercosis)

Eat cysts (fecal contamination) -->tissue infection (blindness, neurological)

eat meat (larvae) intestinal infection, malnutrition, discomfort

Front 30

What medication do we use to treat all worm infections

Back 30

albendazole (medentazole)

Front 31

How is hookworm transmitted

Back 31

necator americanus (but not in US!)
larva penetrate skin (barefoot walking), to gut, to lungs

Front 32

What are the clinical syndromes of necator americanus

Back 32

anemia, itching at site of infection, cough with bloody sputum, diarrhea, abdominal pain, weight loss

Front 33

What are the clinical syndromes of ascaris, and their relative frequencies

Back 33

1. asymptomatic in most
2. pneumonia
3. malnutrition (children)

Front 34

Where can strongyloides be found (other than tropics and subtropics)

Back 34

SE USA

Front 35

What is ivermectin used to treat

Back 35

nematodes: strongyloides *autoinfection

Front 36

What is praziquantel usd to treat

Back 36

cestodes nematodes

Front 37

What can metronidazole treat

Back 37

entamoeba histo, giardia, C diff

Front 38

What medication is used for P vivax and ovale

Back 38

primaquine

Front 39

which worm can autoinfect

Back 39

strongyloides

Front 40

which worms do you get from penetration of unbroken skin

Back 40

strongyloides, necator

Front 41

which worms do you get from f/o contamination

Back 41

ascaris

Front 42

necator is also known as...

Back 42

hookworm

Front 43

taenia solium is also known as...

Back 43

pork tapeworm

Front 44

what is praziquantel used for

Back 44

cestodes (taenia solium)

Front 45

what is ivermectin used for

Back 45

ascaris, strongyloides (Tissue infections)

Front 46

what is metronidazole used for

Back 46

giardia, entamoeba, diff

Front 47

what are the main clinical presentations of ascaris

Back 47

asymptomatic (most)
pneumonia (some)
malnutrition (children)