L14: Rabbit Analgesia And Anesthesia (Heard)

Question 1

• V-gel forms seal at glottis

- use V-gel w/ capnograph

Answer 1

:)

Question 2

Differences in small patients/rabbits**

Answer 2

• rapidly hypothermic (or hyperthermic)
• faster metabolism of drugs
• ventilation rate increases
• circulation time decreases
• faster to mask down with inhalant, and faster to recover
• large surface area to volume ratio
• move air rapidly over nasal turbinates which may interfere w/ auscultation
• resp. Dz. issues common
• can fx lumbar vertebrae easily when kick
• don’t need to NPO pre-op

Question 3

• 20% blood volume loss significant
• total blood volume ~ 10% of body weight
• fixed dilated pupil bad

Answer 3

:)

Question 4

Capnographs

Answer 4

• side stream capnograph can exceed minute ventilation of rabbits
• in stream can have a lot of dead space
• EMMA can be hard to read

Question 5

Catheter placement

Answer 5

• cephalic v. Preferred
• ear, jugular vein, saphenous v.
• IO catheters on tibia, femur, trochanteric fossa, proximal humerus

Question 6

Ketamine injected peripherally can cause phlebitis/vasculitis

Answer 6

:)

Question 7

Opioid use in rabbits

Answer 7

• buprenorphine lasts longer than morphine or hydro, but less analgesia (can give intranasal)
• bup variable effect transmucosal
• more likely to sympathetic response with opioids in rabbits

Question 8

Atropine and Glycopyrrolate use in rabbits

Answer 8

• some can metabolize atropine rapidly and others can’t
• can induce atropine toxicity if rabbit doesn’t have atropinase
• avoid antimuscarinics, but rec. to give glycopyrrolate if needed and only use atropine in an emergency
• atropine can also cause ileus

Question 9

Can do epidurals in rabbits (use same technique as in cats)

Answer 9

Morphine used primarily

Question 10

Acepromazine in rabbits

Answer 10

• can use low dose ace
• not for aggressive animals necessarily
• degree of tranquilization dependent on env. Animal in
• give IM, then wait 45-60 mins. Pre-op

Question 11

Induction of rabbits

Answer 11

• IM or IV injection
• Mask (not rec. w/o sedation)
• induction chamber

Sedation:

• midazolam + ketamine
• midazolam + bup or hydro

Question 12

Telazol in rabbits

Answer 12

• don’t use

- can wipe out kidneys, and doesn’t render rabbits immobile

Question 13

Propofol in rabbits

Answer 13

Can use if can directly intubate animal quickly

Question 14

• Rabbits obligate nasal breathers
• obstruction = common cause of morbidity/mortality
• use #1 laryngoscope
• use 3mm internal diameter tube for medium sized 3kg rabbit
• rabbits rarely regurge

Answer 14

:)