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DMP 718 - Veterinary Parasitology > GI presentations - Ancylostoma and Strongyloides > Flashcards

GI presentations - Ancylostoma and Strongyloides Flashcards

1
Q

Hookworms

A

Ancylostoma caninum
Ancylostoma tubaeforme
Ancylostoma braziliense
Uncinaria stenocephala

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2
Q

Hookworm - Hosts and Distribution

A

Dogs or cats
Worldwide
Tropical and warm temperate areas

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3
Q

Hookworm - Taxonomy

A

Class: Nematoda
Superfamily: Strongyloidea

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4
Q

Hookworm - Morphology

A

Large buccal capsule

Males: well-developed bursa

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5
Q

Hookworm - Diagnostic stage

A

Eggs

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6
Q

Hookworm - Infective stage

A

L3

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7
Q

Ancylostoma caninum - Morphology

A

Gray or reddish worms

3 pairs of teeth

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8
Q

Ancylostoma caninum - Life cycle

A 
Eggs in feces
Infective larvae in environment
1. Penetrates skin (tracheal migration)
2. Larvae ingested (mucosal migration)
3. Larvae ingested (somatic migration)
Adults in small intestine
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9
Q

Ancylostoma caninum - Routes of infection

A
  1. Ingestion of infective L3
  2. Percutaneous
  3. Transmammary
  4. Leak back
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10
Q

Ancylostoma caninum - PPP

A

2 weeks

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11
Q

Ancylostoma tubaeforme - Routes of infection

A
  1. Oral route

2. Skin penetration

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12
Q

Ancylostoma tubaeforme - PPP

A

3 weeks

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13
Q

Uncinaria stenocephala - Host

A

Dogs

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14
Q

Hookworms - Pathology

A

Hemorrhagic enteritis

Protein loss from blood loss

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15
Q

Uncinaria stenocephala - Pathology

A

Mild to non-pathogenic

Blunting and thickening of villi

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16
Q

Hookworms - Clinical signs

A 
Diarrhea and bloody feces
Anemia
General weakness
Emaciation
Death
17
Q

Ancylostoma braziliense - Host and distribution

A

Cats and dogs
SE United States
Tropics and subtropics

18
Q

Hookworms - Diagnosis

A

Eggs in feces
Decrease in PCV
Eosinophilia

19
Q

Hookworms - Treatment

A 
Fenbenzaole (dogs)
Ivermetcin (cats)
Milbemycin oxime (both)
Moxodectin (both)
Pyrantel pamoate (both)
Selamectin (cats)
20
Q

Hookworms - Reduction of transmammary or transplacental transmission

A

Fenbendazole

Ivermectin

21
Q

Hookworms - Control

A

Keep pens dry
Remove feces
Sodium borate
1% bleach

22
Q

Hookworms - Public health

A

A. caninum and A. braziliense L3 can penetrate human skin

Cutaneous larva migrans

23
Q

Strongyloidiasis

A

Strongyloides steroralis

24
Q

Strongyloides stercoralis - Common name

A

Intestinal threadworm

25
Q

Strongyloides stercoralis - Hosts

A

Dogs

Cats (rarely)

26
Q

Strongyloides stercoralis - Geographic distribution

A

Worldwide

Temperate and tropical

27
Q

Strongyloides stercoralis - Taxonomy

A

Class: Nematoda
Suerfamily: Rhabditoidea

28
Q

Strongyloides stercoralis - Life cycle

A 
L1 in feces
L3 penetrate skin
Migrate to lungs
Swallowed
Adults in small intestine
29
Q

Strongyloides stercoralis - Pathology

A

Depends on number of worms
Light: Catarrhal enteritis
Heavy: Erosion of epithelium
Inflammation and necrosis of small intestine

30
Q

Strongyloides stercoralis - Clinical signs

A 
Young animals
Anorexia
Coughing
Purulent conjunctivitis
Pneumonia
Severe diarrhea
Pruritus and dermatitis
31
Q

Strongyloides stercoralis - Diagnosis

A

L1 in feces
BAERMANN EXAM
FRESH FECES

32
Q

Strongyloides stercoralis - Morphology

A

Genital primordium

33
Q

Strongyloides stercoralis - Treatment

A

Fenbendazole

Ivermectin

34
Q

Strongyloides stercoralis - Public health

A

Minimal risk

But can be chronic or severe, even lethal in immunocompromised persons

DMP 718 - Veterinary Parasitology (8 decks)

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