Internal Parasites: Nematodes

Question 1

Nematodes are also known as what?

Answer 1

roundworms

Question 2

Where will nematode eggs/larvae be found if adults live in the lungs or intestines?

Answer 2

feces

Question 3

Where will nematode eggs/larvae be found if adults live in the kidneys or bladder?

Answer 3

urine

Question 4

All ascarids are round worms but …

Answer 4

not all roundworms are ascarids

Question 5

What nematode is this?

1. Toxocara canis; cati,
2. Toxascaris leonina

Answer 5

Ascarids

Question 6

What type of ascarids are transmitted…

1. Environment
2. In utero
3. Transmammary

Answer 6

Toxascaris leonine

Toxocara canis/cati

Question 7

What parasite is this?

- Pregnancy hormones stimulate encysted roundworms to migrate from mother’s tissue to fetus

Answer 7

ascarids

Question 8

What parasite is treated this way?

- Deworm all puppies and kittens 2 weeks postpartum, then every 2-3 weeks for 3-4 treatments

Answer 8

ascarids

Question 9

What nematode can cause these clinical signs?

1. vomiting
2. diarrhea
3. coughing
4. gassy
5. distended abdomens
6. seizures (CNS)

Answer 9

ascarids

Question 10

What are the human forms of ascarids? (2)

Answer 10

1. ocular larval migrans

2. visceral larval migrans

Question 11

What type of human ascarid is this?

1. Larva travels to eye
2. May have to remove eye

Answer 11

Ocular larval migrans

Question 12

What type of human ascarid is this?

1. Larva travels to various organs
2. May cause organ failure

Answer 12

Visceral larval migrans

Question 13

What type of nematode are these?

1. Unicaria stenocephala
2. Ancylostoma caninum

Answer 13

hookworms

Question 14

What type of nematode are contracted through…

1. Ingestion from the environment
2. Transmammary
3. Cutaneous larval migrans

Answer 14

hookworms

Question 15

What hookworm only effects dogs?

Answer 15

Ancylostoma caninum

Question 16

What hookworm can effect dogs and cats?

Answer 16

Unicaria stenocephala

Question 17

What type of hookworm is this?

1. Larva penetrates through skin, can encyst
2. Humans can be infected/infested
3. Causes skin irritation
4. Creeping eruptions

Answer 17

Cutaneous Larval Migrans

Question 18

What type of nematode causes these clinical signs?

1. Listless
2. bloody diarrhea
3. anemia

Answer 18

hookworms

Question 19

What type of nematode is this?

- Trichuris vulpis

Answer 19

whipworm

Question 20

What nematode is contracted through ingestion from environment?

Answer 20

whipworm

Trichuris vulpis

Question 21

What nematode looks like this?

1. Football shape egg
2. double operculum
3. fecal jewel

Answer 21

whipworm

Trichuris vulpis

Question 22

What nematode is a sporadic egg shedder?

Answer 22

whipworm

Trichuris vulpis

Question 23

These are the clinical signs for what nematode?

1. Blood/mucus in stool
2. more frequent bowel movements

Answer 23

whipworm

Trichuris vulpis

Question 24

What nematodes is these?

1. Heartworm
2. Mosquito vector

Answer 24

dirofilaria immitus

Question 25

How is dirofilaria immitus diagnosed?

Answer 25

blood

Question 26

How is Strongyloides stercoralis and Aelurostrongylus abstrusus diagnosed? (2)

Answer 26

1. larvae not eggs

2. Baerrmann Technique

Question 27

What nematode is this?

1. Thread worm (dogs and cats)
2. Ingested larvae, not eggs
3. Passes as larvae in feces

Answer 27

Strongyloides stercoralis

Question 28

What nematode is this?

1. Lungworm (cats)
2. Larvae with kink in tail
3. Treat with Panacur or Ivermectin

Answer 28

Aelurostrongylus abstrusus