2- Local anaesthesia blocks in farm animals Flashcards
What are the 3 LA options for flank surgery in large animals?
Line block
Inverted L block
Paravertebral anaesthesia
Describe in basic terms how a paravertebral anaesthesia is carried out
Blocks the nerves close to their outflow at the spine - deep to the transverse process
Hit the transverse process & walk of the front to inject
T13, L1 & L2
Can palpate tip of L1
Why do you place a small drop of local anaesthesia in the hub before injecting?
Check that its not to far in, if its gets sucked in likely to deep and in the abdomen
What are the 2 local anaesthetic techniques used in foot surgery in large animals?
Ring block
Intravenous regional anaesthesia
Why is paravertebral used more than ‘line’ block or ‘inverted L’ block
Less needle sticks so is the preferred method
Name 2 local anaesthetic techniques used in eye surgery in large animals
Ring block/local infiltration
Retrobulbar block
Petersons block
Auriculopalperal block
Why would you use a Petersons block over a retrobulbar block?
Retrobulbar is quite destructive and Petersons preserves structures
A paravertebral anaesthesia block also provides local to what structures?
Cranial 2 teats - fore udder
A epidural will provide local to what structures
Caudal 2 teats- rear udder
Name the licensed local anaesthetic used in cattle
Procaine
Name the licensed local anaesthetic used in horses
Lignocaine
What is generally combined with procaine in commercial vet preps
Adrenaline
Procaine is contraindicated for what use?
Epidural or IV use
Lignocaine is contraindicated for what use?
IV use
