Reptiles Flashcards
RM01-05
start of RM01
name 4 reasons parasite infections are common in reptiles
- heavy parasite burdens can build up quickly
- same environment for their lifetime
- messy feeders
- invertebrates can contaminate themselves
name 2 deworming products that are toxic to reptiles
- Fenbendazole
- Ivermectin
name the toxic deworming product (reptiles)
radiomimetic lesions with ulcerated, myelosuppression
Fenbendazole
name the toxic deworming product (reptiles)
fatal flaccif paralysis in chelonians - do NOT use!
Ivermectin
name 5 common parasites found in faecal samples of reptiles
- coccidia
- roundworms
- pinworms
- commensal ciliates
- cryptosporidium
what is the treatment for coccidia in reptiles
toltrazuril or TMPS
what is the treatment for roundworms (ascarids) in reptiles
Fenbendazole
what is the treatment for pinworms (oxyurids) in reptiles
Fenbendazole
name 3 commensal ciliates that can be found in reptile faeces;
high levels secondary to other disease
- Balantidium spp
- Nyctotherus spp
- candida
name the reptile parasite
direct lifecycle in lizards and snakes;
regurgitation, anorexia, stomach swelling in snakes;
emaciation due to SI disease in leopard geckos;
cold ZN stain, biopsy, or PCR to diagnose;
resistant to most disinfectants, treatment unrewarding
Cryptosporidium
what type of blood tubes should be used for reptile samples?
heparin
how much blood can be removed from reptiles at a time?
0.5% BW
(0.5mL per 100g)
name 4 locations for blood sampling in tortoises
- jugular vein
- carotid arteries
- dorsal coccygeal vein
- subcarapacial sinus
(R side usually more prominent)
name the location for blood sampling tortoises
formed by external jugular veins and intercostal vessels;
lymph dilution possible;
trauma possible
subcarapacial sinus
name 2 location options for blood sampling snakes
- ventral tail vein
- cardiac
name 4 locations for blood sampling lizards
- venral tail vein
- jugular vein
- ventral abdominal vein
- cardiac (if desperate!)
what is the lifespan of erythrocytes in reptiles
800 days
what are the majority of reptile infections (up to 50%) caused by?
anaerobes
(often multi-resistant gram neg anaerobes)
name the 3 standard radiograph views for chelonians
- dorso-ventral vertical beam
- horizontal lateral beam
- cranial caudal lateral beam
what is the transit time for barium contrast through the GIT of reptiles
21 days
(or up to 28d)
start RM02
what 2 types of bacteria will most reptiles (esp fresh water species) be shedding?
- Salmonella
- Campylobacter
what temperature should a collapsed reptile be kept at?
28°C
name the reptile syndrome
preservation of serum electrolyte balance at times of malnutrition;
feeding results in intracellular uptake along with glucose;
fatal hypophosphataemia and hypokalaemia
refeeding syndrome
what is the maintenance fluid rate for reptiles
15-30 mL/kg/day
what is the max amount of fluids that should be given to a reptile per day?
up to 4% BW per day
(1% BW per bolus)
this will indicate the reptile has rehydrated itself
passing of urates
this is an easy single handed technique for giving fluids to chelonians;
brachiocephalic fossa;
absorb from vascular network around the pericardium
epicoelomic
what percent of its total BW can a tortoise’s bladder be?
up to 25%
what is the approx pH of tortoise urine
7.5
what is the normal specific gravity (SG) of tortoise urine
1.003-1.012
(>1.034 if dehydrated)
name 4 risks of stomach tube feeding reptiles
- regurgitation
- trauma/perforation
- aspiration
- access
name 5 benefits of oesophagostomy tubes for tortoises
- decr handling and stress
- other oral meds may be delivered
- larger volume feeds
- can eat around it
- easily done at home
name 3 risks of oesophagostomy tubes for tortoises
- requires heavy sedation or light GA to place
- laceration of jugular or carotid
- may be pulled out
describe the 9 steps of placing an oesophagostomy tube in a reptile
- heavy sedation or light GA
- long handled curved forceps down oesophagus and reflect tissues laterally
- incise with scalpel over the tip
- advance forceps
- grab distal aspect of premeasured feeding tube
- pull out of mouth
- reinsert tube down oesophagus
- pull distal end of tube to straighten
- suture in place
start of RM03
name 5 reasons why correct light is so important in reptiles
- promote synthesis of vitamins
- activates metabolism
- regulating body temp
- maintaining bone health
- stimulate appetite
name the 2 main causes of metabolic bone disease in reptiles
- deficient Ca intake
- deficient vit D activation
what 2 things are required for synthesis of vitamin D in skin for reptiles
- UVB light
- heat
what are the calcium and phosphate levels like in a reptile with metabolic bone disease?
hpocalcaemia with hyperphosphataemia
name 5 reasons for deficient Ca intake in reptiles leading to metabolic bone disease
- unsupplemented diet
- imbalance in dietary Calcium and Phosphorous ratio
- wrong supplementation
- dusted prey left too long
- sequestration in Folliculogenesis/parasites
name 4 reasons for deficient vit D activation in reptiles leading to metabolic bone disease
- no UVB light
- UV bulb old, too far away, behind glass
- light not on long enough
- vit A, C, K
name 6 signs of metabolic bone disease in reptiles
- anorexia, weight loss
- muscle tremors, lameness
- POOS (follicular stasis), dystokia
- scoliosis, kyphosis
- angular limb deformities
- rubber jaw
name 3 ways to diagnose metabolic bone disease in reptiles
- clinical exam
- radiography
- biochemistry
what is the dosing for parenteral calcium to treat reptiles with metabolic bone disease
Calcium gluconate
100mg/kg q6h IV/SC/IO
name 2 phosphate binders that can be used to address elevated phosphorous in reptiles with metabolic bone disease
- aluminum
- magnesium hydroxide
what is the ideal calcium:phosphate ratio for reptiles
Ca:P = 1.5-2.1
name 4 signs of metabolic bone disease in Chelonia
- shell pyramiding/deformity
- anorexia, weight loss
- POOS, dystokia
- pseudoarthritis
what is the most common ectoparasite of snakes and lizards?
Ophyonissus natricis
(mite)
name 4 signs of mites (Ophyonissus natricis) in reptiles, esp snakes and lizards
- Dysecdysis (abnormal shedding)
- increased bathing
- self trauma
- anaemia
name 2 treatment options for mites (Ophyonissus natricis) in reptiles
- Ivermectin (fatal in Chelonia!!)
- Fripronil (for environment NOT animal!)
what is the Ivermectin dosing for reptiles (NOT chelonia!) to treat mites (Ophyonissus natricis) in snakes and lizards
0.2mg/kg PO/SC/IM,
repeat in 7-14d