Rabbit Medicine Flashcards
Digestive system characteristics of rabbits
- monogastric, hindgut-fermenting, herbivores
- stomach should never be empty
- should not be able to vomit (well-developed cardiac sphincter)
Cecum function
ferments fibers and starches
Colon function
sorts excretia
Rabbits quickly eliminate ________
(different from other herbivores)
fiber
Contents of cecum (microbes)
- Gram positive and negative anaerobes
- Bacteroides most common
- large ciliated protozoa
- yeast
Size of cecum
10x the capacity of the stomach
What % of intestinal contents may be in the cecum?
40%
What is the end of the cecum called?
veriform appendix
Other names for ileus
gut stasis, GI hypomotility, gastric stasis syndrome, gastrointestinal syndrome
Prognosis for ileus depends on what?
- cause
- how long it has been going on
Causes of ileus
Pain
- dental, visceral, musculoskeletal, post-op
Stress
- pain, husbandry
Diet
- low indigestible fiber, high protein, high carbohydrate, abrupt diet change
Other
- obesity, dehydration, anesthesia, toxins, GI
other GI conditions besides ileus
foreign bodies, obstructions, trichobezoars
Ileus can result in:
- gastric dilation/impaction
- trichobezoar
- gastric ulcer
- dehydration
- dysbiosis
- pain
- death
Clinical signs of ileus
- can be acute or chronic
- anorexia
- decreased feces
- abnormal feces
- weight loss
- lethargy
- pain (hunched, not moving, stretching, dull eyes/eyes partially closed, bruxism, vocalization)
Physical exam findings that may indicte ileus
doughy abdomen, palpation of a foreign body, painful abdominal palpation, dehydration
Chemistry findings consistent with ileus
severe azotemia, ketoacidosis, hepatic lipidosis(due to anorexia)
Radiographic findings-ileus
reduced stomach fill and large gas pockets
Radiographic findings of obstruction
distended stomach-air, fluid
How do trichobezoars appear radiographically?
striated appearance surrounded by gas
Supportive care considerations for ileus
- warmth
- fluids (100-150 ml/kg/day)
- nutrition
- analgesics (buprenorphine +/-
- prokinetics (Cisapride) if not obstructed
- exercise (obesity)
Pathogenesis of dysbiosis
overgrowth of gram negative and Clostridium spp.->enterotoxemia->diarrhea & dehydration->death
Causes of dysbiosis
- secondary to ileus
- secondary to poor diet
- antibiotics
- oral “cillins”, lincosamides, cephalosporins, macrolides–DO NOT GIVE
- Tyzzer’s disease
Three causes of Tyzzer’s disease
- hepatic necrosis
- degenerative myocarditis
- necrotizing ileotyphlitis
How do rabbit teeth grow?
open rooted=grow continuously
Where to points develop on teeth in rabbits?
lower lingual, upper buccal