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TERM 4 > Mice/Rats Dz > Flashcards

Mice/Rats Dz Flashcards

1
Q

Cause of mouse pox?

A

Ectromelia virus

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2
Q

mouse pox transmission?

A

direct contact

skin abrasions

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3
Q

mouse pox c/s?

A

Acute? death

Chronic? Dermal rash and conjunctivitis

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4
Q

Colony of mice die acutely. You see, upon histopath, intracytoplasmic eosinophilic inclusion bodies along with hepatocellular necrosis. What’s on the top of your list and how do you treat?

A

mouse pox

depopulation! disinfection!

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5
Q

This disease is common in pet and wild populations. Mice and rats serve as the 1* host. The causative agent has been implicated with the following associated clinical signs: suppurative rhinitis, chattering, chronic pneumonia and dyspnea. What’s the mode of transmission for this disease?

A

transplancental
direct
aerosol

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6
Q

This disease is common in pet and wild populations. Mice and rats serve as the 1* host. The causative agent has been implicated with the following associated clinical signs: suppurative rhinitis, chattering, chronic pneumonia and dyspnea. What’s the dz?

A

M. pulmonis

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7
Q

how do you treat M. pulmonis?

A

with Tetracyclines but they don’t eliminate infection!

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8
Q

Pinworms are a big deal in mice and rats. what are the main 2 we need to know?

A
  • Syphacia obvelata

- Aspicularis tetraptera

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9
Q

Which of the 2 pinworms are the most common in mice?

A

Syphacia obvelata

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10
Q

What is the direct life cycle of S. obvelata?

A

11-15 days

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11
Q

What are the NEED to knows about S. obvelata?

A

Deposited on perianal region
• Infective in 6 hours
• Airborne dissemination

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12
Q

C/S for S obvelata usually asymptomatic. But if there WERE To be signs due to heavy infestation, what would they be?

A
  • Rectal prolapse
  • Intussusception
  • Enteritis
  • Fecal impaction
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13
Q

How do you diagnose S obvelata?

A

with scotch tape like horses!

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14
Q

What’s the life cycle for Aspiculara tetraptera?

A

23-25 days

longer than the other pinworm!

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15
Q

Noteworthy things about Aspiculara tetraptera?

A

Deposited @ night & excreted in a mucous layer covering the feces AND the eggs become infected in 6-7 days!! vs 6 hours in the other pinworm.

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16
Q

How to diagnose Aspiculara tetraptera??

A

fecal flotation vs the other pin worm where you use tape!!

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17
Q

What are the 2 mites we need to know?

A

a. Myocoptes musculinus

b. Myobia musculi

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18
Q

Which mite is more common?

A

Myocoptes musculinus

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19
Q

What’s the life cycle of musculinus and where are you likely to find it on the body?

A

8-14 days

• Predilection for the inguinal region, abdominal skin, and dorsum

20
Q

What’s the lifecycle for musculi and does it feed on blood? Also, where does it live?

A

23 days
it doesn’t feed on blood
It likes to hang out on the hair shafts and will live on dead hosts for a few days.
Affects C57BL mice!!!

21
Q

how to differentiate between the two mites?

A

Myobia musculi has a single empodial claw (on the second pair of legs)

22
Q

Ulcerative dermatitis is common is what type of mouse??

A

C57BL/6 & C57BL/10

23
Q

what are the two contributing factors to ulcerative dermatitis?

A

environmental and diet

24
Q

c/s for ulcerative dermatitis?

A

alopecia/ulceration/scarring and disfigurement/pruritis

25
Q

Mammary tumors cause?

A

viral
chemical
hormonal

26
Q

Mammary tumors prognosis and treatment?

A

poor
surgical removal
usually invasive

27
Q

Is barbering a thing with these rodents?

A

Yes! and remember it’s a behavioral thing

28
Q

Is malocclusion a thing with mice?

A

definitely is

29
Q

Is M. pulmonis a thing in rats?

A

YES!
primarily targets CRD. You’ll see Chromodacryorrhea from all the Porphyrin secretion.
clinical signs may take longer to manifest than in mice.

30
Q

what’s the pathology like for M. pulmonis?

A

pulmonary lesions will progress…and you’ll have pinpoint gray lesions/abscesses. CRAN VENTRAL

31
Q

Streptobacillus moniliformes—how is it transmitted/

A

Bites, close contact, ingestion of rat feces

32
Q

Streptobacillus moniliformes —what’s the most important thing about this disease?

A

it’s ZOONOTIC—rat bite fever. Will notice • Maculopapular and pustular rash, fever, headache, polyarthritis

33
Q

Hantavirus—what’s the most important thing about this disease?

A

it’s zoonotic!! 2 conditions:

a. Hemorrhagic Fever and Renal Syndrome (HFRS)
b. Hantavirus Pulmonary Syndrome (HPS)

34
Q

Hantavirus—Hemorrhagic Fever and Renal Syndrome (HFRS)

A

Rattus norvegicus is the natural host for Seoul Hantavirus
• Fever, thrombocytopenia, capillary leakage • Myalgia, headache, petechiae
• Retroperitoneal and renal hemorrhage

35
Q

Hantavirus Pulmonary Syndrome (HPS)

A
  • Fever and capillary leakage in lungs

* Death from shock and cardiac complications

36
Q

How is hantavirus transmitted between rats vs zoonotic transmission?

A

direct/aerosol
vs
rodents/urine

37
Q

3 types of ectoparasites that rats get

A
  • Lice
  • Fleas
  • Mites
38
Q

list of endoparasites

A
  • Cryptosporidiosis
  • Trypanosoma lewisi
  • Giardia muris, Spironucleus muris • Pinworms
  • Trichosomoides crassicauda
  • Tapeworms
39
Q

Chronic Progressive Nephropathy is considered what kind of dz?

A

age related

40
Q

Chronic Progressive Nephropathy is considered what kind of dz?

A

age related

other names:
• Progressive glomerulosclerosis
• Old rat nephropathy
• Glomerulosclerosis

41
Q

Contributing factors to Chronic Progressive Nephropathy?

A

Older than 12 months
MALES

seen with high protein diet just like hamsters

42
Q

Chronic Progressive Nephropathy—pathology

A
  • Kidney enlargement w/ intermittent pallor
  • Pitted renal cortices
  • Linear streaks in the cortex & medulla
43
Q

How to manage Chronic Progressive Nephropathy?

A

reduce caloric intake by 25-30%

44
Q

What do you need to control in order to prevent ring tail in suckling rats?

A

humidity 30-70% as well as dehydration

45
Q

You see a colony of suckling mice under your bed. You think they’re so adorable until you notice dry gangrene on their toes and their tail looks constricted and just awful. what’s the culprit?

A

ring tail

46
Q

Mammary Fibroadenoma rats

A

cut it off

47
Q

Zymbal’s Gland Tumor rats

A

sebaceous adenocarcinoma—adjacent to the auditory canal and base of the external ear

TERM 4 (9 decks)

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