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Flashcards in Rodents Deck (36)
1

Do ferrets need to be fasted before surgery?

Yes
4-6 hours

2

Which opioid reverses fentanyl sedation?

Buprenorphine

3

Which opioids can you use with rodents and ferrets?

Buprenorphine
Pethidine, methadone, morphine

4

What is the most common pre-med for rodents and ferrets?

Midazolam and buprenorphine

5

Why should you swab out the mouth of rodents prior to surgery?

May have food stored in mouth
Risk of aspiration pneumonia

6

Give some cons of using face masks to maintain anaesthesia

Potentially increased dead space
Leakage of volatile agent
Breath-holding
Tongue can block pharynx if incorrectly positioned
Volatile agents may cause nasal oedema and mucus production
No protection against upper or lower airway obstruction or aspiration

7

What can you give as a pre-med for ferrets?

Midazolam and buprenorphine
Triple (ketamine, medetomidine, buprenorphine - cat dose)
Hypnorm (fentanyl and fluanisone)

8

Which iv induction agents can you use in ferrets?

Alfaxalone
Propofol

9

What flow rate of anaesthesia should you use in ferrets?

1.5 - 2.5 l/min

10

Why should you raise the thorax when performing surgery on a ferret?

To prevent abdominal contents putting pressure on the diaphragm

11

Why should you avoid touching the guts when doing surgery on a rodent?

More prone to adhesions forming -> gut stasis

12

Give the clinical signs of insulinoma

Hypoglycaemia
Weakness
Hypersalivation

13

Give some risks associated with insulinoma surgery

Intra-operative insulin release
Pancreatitis post-operatively
(Can give intra-operative glucose and dexamethasone to counteract)

14

What are rodents more susceptible to compared to other pets when considering anaesthetic?

Hypoglycaemia
Hypothermia
(High metabolic rate, rapid drug metabolism)

15

Where can you take blood from in rodents?

Lateral saphenous, lateral tail vein (mice and rats), femoral vein, jugular vein, cranial vena cava in guinea pigs, degus and chinchillas

16

Do herbivorous species have acidic or alkaline urine?

Alkaline

17

The urine of which rodents is usually proteinuric?

Rats and mice

18

Why is anorexia considered an emergency in rabbits?

Can lead to gut stasis which can be fatal

19

Why is clipping of rabbit incisors unacceptable?
Why is rasping also unacceptable?

Clipping: results in tooth fracture
Rasping: can damage the periodontal ligament

20

What is the recommended treatment for tooth root abscesses in rabbits?

Surgical tooth removal and marsupialisation or closure after placement of an AB-impregnated implant (eg PMMA bead)

21

Give some causes of gastric stasis in rabbits

Mechanical obstruction (eg dehydrated ingesta secondary to dehydration, FB)
Abnormalities in neuronal/gastric smooth muscle contractility
Low fibre, high carbohydrate diet
Stress

22

Give some clinical signs of gut stasis in rabbits

Gradual decrease in appetite -> anorexia
Decreased size and amount of faecal pellets
Depression
Dehydration
Death

23

How would a rabbit's stomach feel if it had gastric stasis?

Firm, dough-like

24

How do you treat gut stasis in rabbits?

Fluids (oral and iv; maintenance= 100ml/kg/day)
Analgesia (buprenorphine at first, then NSAIDs once rehydrated)
Prokinetics (eg Ranitidine)

25

What causes 'walking dandruff'?

Cheyletiella (rabbit fur mite; non-burrowing)

26

How do you treat 'walking dandruff'?

Ivermectin

27

What is the rabbit ear mite?

Psoroptes cuniculi

28

How do you treat rabbit ear mites?

Ivermectin or selamectin

29

What causes ulcers and scabs on the nose and/or perineum of rabbits?

Treponema cuniculi ('rabbit syphilis')

30

How do you treat Treponema cuniculi ('rabbit syphilis')?

Usually self-limiting
Can give injectable penicillin once every 7 days for 3 doses

31

How is E.cuniculi shed in rabbits?

In urine

32

Give some clinical signs of E cuniculi in rabbits

Head tilt, torticolis, HL paresis, paralysis, tremors, convulsions, urinary incontinence, cataracts, lens-induced uveitis and death

33

How do you diagnose E.cuniculi in rabbits?

IgG and IgM antibody assays (indicate exposure)
PCR (detects spores in urine or faeces)
PM: gross changes to kidneys (pitting and scarring of renal cortex)

34

How do you treat E.cuniculi in rabbits?

Chronic cases: tx not usually successful
Acute cases: fenbendazole may alleviate clinical signs

35

Why should glucocorticoids be used with caution in rabbits?

Very immunosuppressive and can induce liver disease

36

What is licensed for fleas in rabbits?
What should never be used?

Imidacloprid is licensed
Fipronil is toxic to rabbits so should never be used